Model 2435 Intelesite
Cell Site Environment
Control System
Version 1.0
Instruction Manual
Sierra Monitor Corporation
1991 Tarob Court, Milpitas, CA 95035
(408) 262-6611
(800) 727-4377
(408) 262-9042 - Fax
E-mail: [email protected]
Web Site: www.sierramonitor.com
APPLICABILITY & EFFECTIVITY
Effective for all Model 2435 Intelesite systems manufactured after January, 2005.
T10023
Rev. A
Instruction Manual
THIS PAGE INTENTIONALLY LEFT BLANK
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Instruction Manual
Table of Contents
1
Product Description................................................................................................... 1
1.1
General ............................................................................................................................ 1
1.2
Control System Configuration......................................................................................... 2
1.2.1
Central Control Module (CCM) .............................................................................. 3
1.2.2
Remote HVAC Control Module (HCM) ................................................................. 4
1.2.3
Fan Control Module (FCM) .................................................................................... 4
2
Operation.................................................................................................................... 7
2.1
Introduction ..................................................................................................................... 7
2.2
Heat Management............................................................................................................ 7
2.2.1
Forced Air Primary Cooling .................................................................................... 7
2.2.2
HVAC Cooling........................................................................................................ 8
2.2.3
Site on Generator Power.......................................................................................... 9
2.2.4
Emergency Shutdown.............................................................................................. 9
2.3
DC Plant Management .................................................................................................... 9
2.3.1
Emergency Shutdown – High Temperature, External Command ......................... 10
2.4
Power Monitoring.......................................................................................................... 10
2.5
Front Panel Display and Keypad ................................................................................... 10
2.5.1
Set Points Keys...................................................................................................... 12
2.5.2
Alarms Keys .......................................................................................................... 14
2.5.3
Controls Keys ........................................................................................................ 16
2.5.4
Plus and Minus Keys ............................................................................................. 18
2.5.5
Enter Key............................................................................................................... 18
2.5.6
Security PIN Codes ............................................................................................... 21
3
Sequence of Operation ............................................................................................ 23
3.1
4
Description .................................................................................................................... 23
Maintenance, Calibration and Service .................................................................. 31
4.1
Periodic Maintenance .................................................................................................... 31
4.2
Sensor Calibration ......................................................................................................... 31
4.3
Voltage Calibration ....................................................................................................... 31
4.4
Service ........................................................................................................................... 31
4.4.1
Alarm Diagnostics ................................................................................................. 32
4.4.2
System Management Functions – Diagnostics ...................................................... 33
4.4.3
Field Replacement Parts ........................................................................................ 33
5
6
7
Product Specifications............................................................................................. 33
Warranty .................................................................................................................. 34
Appendix A............................................................................................................... 36
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Instruction Manual
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Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Instruction Manual
1
1.1
Product Description
General
The Model 2435 Intelesite Cell Site Environment Control System is designed to maximize
EBTS (Enhanced Base Transceiver Station) site availability, reliability and energy
efficiency through electronic, microprocessor based monitoring and management of the
following functions and components:
Forced Air Primary Cooling
HVAC Systems
DC Power Plant
Generators
Specialized software is used to collect data from sensor inputs and make continuous, real
time, control and alarm logic decisions. The results of the logic are used to operate control
outputs, send alarms to the EAS (Environmental Alarm System) and display status and
alarm conditions in the front panel display of the controller.
The Model 2435 Central Control Module replaces the conventional lead/lag controller for
HVAC controls and augments the Rectifier Controller and iDEN Cell Site Controller to
efficiently manage the DC Plant to maximize site availability during adverse conditions of
high internal temperature or loss of commercial AC power.
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 1 of 40
Instruction Manual
1.2
Control System Configuration
The Sequence of Operation that describes the executable logic to affect management of cell
site functions and components is described in Section 3 of this manual. Major components
are described here and are illustrated in Figure 1-1 System Block Diagram.
Utility VAC
Generator VAC
Socket – Ethernet 1
TEMP
RH
ATS Position
CCM
Socket – Ethernet 2
Socket – RS-232
2 X 20
IO BUS
Outside Temperature
Optional ESD
Optional 48VDC Smoke
Discrete Alarms
To EAS
Load Shed 1
Load Shed 2
Existing Conduit
DCM
Load Shed 3
DC Shunt Output 1
DC Shunt Output 2
HCM
HCM
HCM
AC-1
AC-2
AC-3
VDC Sense
System VDC
Fan VDC
48 VDC
Power Plant
FCM
Intake
Assembly
Fan
Assembly
CCM
HCM
FCM
DCM
Legend
Central Control Module
HVAC Control Module
Fan Control Module
DC Control Module
Figure 1-1 System Block Diagram
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 2 of 40
Instruction Manual
1.2.1
Central Control Module (CCM)
The control system provides continuous, automatic control of environmental conditions
within the building. It manages the DC power plant under conditions of loss of commercial
power or high temperature. It monitors fixed
and portable generators and manages building
HVAC systems accordingly.
All structure environment and power
management controls are managed by the
CCM firmware and distributed between
functional modules via the serial Intelesite I/O
Bus.
Direct connections to the CCM (Figure 1-2)
include:
• Intelesite I/O Bus
• Primary
Internal
Temperature
Sensor
Figure 1-2 Model 2435 – CCM
• Primary Internal Relative Humidity
Central Control Module
Sensor
• Outside Temperature Probe (OTP)
• Site Occupied Status
• AC Power Monitoring Inputs
• DC Power Plant Monitoring and Controls Connections (To DCM)
• EBTS EAS Connections
• Three ProtoCessor Sockets for Serial or Ethernet Interface Options
• Smoke Alarm/Emergency Shutdown (Optional)
The CCM is equipped with a backlit LCD display and keypad. The LCD display has two
rows of twenty alphanumeric characters. All set point and configuration parameters may be
viewed and changed through the front panel display and keypad. PIN code security is a
user selectable option.
Three sockets are provided for ProtoCessor Communications Modules. These sockets
allow Ethernet, RS-232 or RS-485 ProtoCessors to be installed.
These modules will allow the optional additional of the following features:
• WebServer interface with DHCP server for operator interface
• RS-232 craft port for menu operator interface
• SNMP Traps to enable alarming through to the NOC, including store-andforward
• Downloading of log files and event histories
• Connection with intelligent generators for status monitoring
• Connection with fire alarm systems
• Connection with intelligent transfer switches (ATS)
• Modem Connections
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 3 of 40
Instruction Manual
1.2.1.1
DC Load Shed Control Module (DCM)
In large EBTS sites which may or may not be equipped with generators, the DC plant is
managed by the control system under conditions of loss of commercial AC power or high
internal temperature. The DCM is contained within the CCM and monitors DC plant
voltage. It contains three normally open control relays to manage external DC contactors.
The relays close sequentially when voltage or temperature based load shedding is called for
by the CCM. Total loss of power to the control system or control system failure causes the
control relays to open.
The DCM also contains two normally open, control relays used by others to shunt-trip the
main DC power feed to the site in the Shutdown on High Temperature or External
Shutdown Command sequence.
1.2.2
Remote HVAC Control Module (HCM)
A powerful feature of the system is that physical
HVAC control relays are now located in remote
HVAC control modules which are installed adjacent
to each air conditioner. Connection between the
HCM (Figure 1-3) and the CCM is via the Intelesite
I/O Bus. The controller firmware is designed to
manage up to three HVAC systems.
An HCM is located at each HVAC unit. All control
wiring connections are made at this module and the
Figure 1-3 Model 2435 – HCM
module is powered by the HVAC 24 VAC supply.
HVAC Control Module
Temperature control set points made at the CCM are
automatically updated to the HCM. Each HCM is also equipped with a temperature sensor.
In the event of CCM failure, control is automatically switched to the HCM’s, thus
affording double redundant HVAC control.
1.2.3
Fan Control Module (FCM)
The FCM (Figure 1-4) is installed at the DC Exhaust Fan
location and contains the fan control relay and processor to
communicate with the CCM. The FCM also provides a fan
status input which is a digital feedback signal directly from
the DC motor. Failure of the status input to prove when the
DC Exhaust Fan is called will cause the controller to
generate a fan failure alarm.
1.2.3.1
DC Exhaust Fan System
The DC Exhaust Fan System is comprised of an intake
Figure 1-4 Model 2435 – FCM
assembly and an exhaust assembly. The intake assembly
Fan Control Module
includes a weather hood with screen mounted on the
exterior wall, intake louvers, and intake filter and frame assembly. The exhaust assembly
includes the 48 VDC fan assembly, exhaust louvers and externally mounted weather hood
with screen. The design is modularized to the largest extent possible to minimize
installation time.
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 4 of 40
Instruction Manual
Figure 1-5 depicts a typical installation with a building wall thickness of 6”. The design,
however, will accommodate various wall thicknesses in both concrete and lightweight
buildings.
Figure 1-5 DC Exhaust Fan System
Typical Installation
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
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Instruction Manual
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Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 6 of 40
Instruction Manual
2
Operation
2.1
Introduction
The Model 2435 Intelesite Cell Site Environment Control System provides continuous,
automatic control of environmental conditions within the building; manages the DC power
plant under conditions of high internal temperature or loss of commercial AC power, and
monitors fixed and portable generators and manages building HVAC accordingly.
2.2
Heat Management
Forced air primary cooling is the principal method of cooling the building. If either the
qualifying criteria for forced air cooling are not met or the internal temperature rises to the
HVAC set point, air conditioning logic is implemented.
2.2.1
Forced Air Primary Cooling
Forced air primary cooling is accomplished using a DC exhaust fan system. Economizer
algorithm criteria for forced air primary cooling are minimum internal temperature,
maximum internal relative humidity and maximum external temperature, all of which are
user adjustable. The internal temperature and relative humidity sensors are integral to the
CCM. The external temperature sensor is installed outside of the building and wired to the
CCM. Forced air primary cooling reduces energy consumption by minimizing HVAC
usage and also enables cooling when on battery power. If the building is in a very dirty or
dusty environment, forced air primary cooling may be disabled and air conditioning will be
used.
The DC exhaust fan system is comprised of an intake assembly and an exhaust assembly.
Figure 2-1 illustrates the intake assembly. The opening in the wall of the building measures
37” H x 15.5” W. This assures the required intake air to move air through the building and
expel it through the 17.5” H x 17.5” W exhaust at a rate of 1,600 CFM.
Air Flow
Figure 2-1 Intake Assembly
The louver and hood assemblies are affixed to the exterior wall. The intake filter and frame
assembly are affixed to the interior wall. The filter is a 30 ppi foam filter, UL 94 HF-1
certified for telecommunications equipment. The filter is supported in an aluminum frame
with aluminum mesh on the exhaust side for strength. The filter does not require regular
replacement; it may be easily removed, cleaned and reused.
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 7 of 40
Instruction Manual
Figure 2-2 illustrates the exhaust assembly. The opening in the wall of the building
measures 17” H x 14” W. The exhaust fan, exhaust louvers and frame are a single module
designed to be mounted from the outside of the building inward with the outer frame being
bolted to the outside of the building. The exhaust hood is mounted over the exhaust hole
and fan assembly on the outside of the building.
Air Flow
Figure 2-2 Exhaust Assembly
The fan motor is a high reliability, brushless, 48 VDC, 7 Amp motor with a capacity of
2,100 CFM at 0.0” W.C. The motor is controlled by a control relay in the FCM with
control logic provided by the CCM over the Intelesite I/O Bus. When the motor is called to
operate, it provides a digital feedback signal indicating proper operation to the fan status
input on the FCM. Failure of the status input to prove will cause the CCM to generate an
FCM Error alarm.
In addition to implementing forced air primary cooling, the DC exhaust fan is turned on
under the following special conditions:
• When commercial or generator power are not present for two minutes
• When the internal temperature exceeds the DC Fan High Temperature set point
2.2.2
HVAC Cooling
If the economizer algorithm criteria for forced air primary cooling are not met or the
internal temperature rises to the HVAC set point or forced air primary cooling is disabled,
HVAC logic is implemented. Lead/lag/backup and demand logic control two or three
HVAC units for cooling and heating. Lead HVAC cycle period, lead, lag and backup set
points are all fully adjustable.
Lead, lag and backup set points are adjustable for Manned and Unmanned modes. The
building is considered manned when the Intrusion input to the CCM is turned on or upon
keypad activity at the CCM. . Cooling set points changed automatically for personnel
comfort. Manned mode will time out 2 hours after initiation or after a 2 hour period with
no keypad activity.
An HCM is installed adjacent to each HVAC unit and contains the control relays for
switching 24 VAC control voltage to the compressor, blower and heater contactors in the
HVAC units. The 24 VAC is sourced from the HVAC’s 220/24 VAC transformer and also
serves as the power supply for the HCM. Therefore, all power and control wiring
connections are made at the HCM. The only connection to the CCM is the Intelesite I/O
Bus.
Each HCM is equipped with a temperature sensor. Each HCM is also updated
automatically with set point data established at the CCM. In the event of CCM failure, and
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 8 of 40
Instruction Manual
loss of the primary internal temperature sensor, control is automatically switched to the
HCM’s. Therefore, the system affords double (triple with backup HVAC) redundant
HVAC control.
2.2.3
Site on Generator Power
When the site is on generator power, there may be restrictions placed upon the use of
HVAC units. The user may select at the CCM the maximum number of HVAC units that
may operate simultaneously (0, 1, 2 or 3). If a single HVAC unit is selected for operation,
the unit selected is user configurable at the CCM (1, 2, or 3). If zero is selected, this is
indicative to the CCM that the generator is less than 12 KW in capacity.
2.2.4
Emergency Shutdown
The emergency shutdown sequences on high temperature, external command and detection
of smoke require that the DC exhaust fan and all HVAC compressors, blowers and heaters
be turned off immediately.
2.3
DC Plant Management
The rectifier controller is the primary manager of the DC plant. However, under conditions
of a drop in DC bus voltage or excessive internal temperature, the Model 2435 CCM and
DCM assume control of the DC plant. DC plant management logic is contained in the
CCM and three normally open relays to manage external DC contactors are contained in
the DCM. For purposes of managing heat generation and maximizing site run time, the DC
electrical supply to RF racks is shed as a function of either voltage or temperature as
follows:
Load Shed Level
Base Radios Shed
Set Point - Voltage
1
2
3
Expansion
B Bus
A Bus
46 VDC
45 VDC
44 VDC
Set Point Temperature
93 F
96 F
99 F
Table 2-1 Voltage or Temperature
If load has been shed as a function of voltage, reconnect will commence only when the
controller senses the presence of AC power, either commercial or generator. If commercial
power, load is reconnected sequentially, Levels 3, 2 and 1 when the voltage rises to the
shed level plus a 2V hysteresis, with a minimum 30 second delay between levels. If
generator power, load is reconnected sequentially, Levels 3, 2 and 1 when the voltage rises
to the shed level plus a 2V hysteresis, with delays as follow:
Level 3: Generator on line after 1 minute delay
Level 2: Generator on line after 2 minute delay
Level 1: Generator >12 KW on line after 3 minute delay
If any level of load has been shed as a function of temperature, reconnect will commence
only after expiration of the reconnect delay or if the CCM is manually restarted. Load is
reconnected sequentially, Levels 3, 2 and 1 when the internal temperature drops to the
respective shed level temperature less a 5° F hysteresis, with a minimum 30 second delay
between levels.
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
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Instruction Manual
2.3.1
Emergency Shutdown – High Temperature, External Command
The emergency shutdown sequence on either high temperature or external command
requires that the main DC power feed to the site be shunt-tripped. The DCM contains two
normally open control relays to manage this function at the appropriate time in the
sequence on command from the CCM.
2.4
Power Monitoring
The CCM is equipped with 3 digital inputs to monitor AC power to the site. Normally
closed contacts from an automatic transfer switch will open to indicate the following
conditions:
1. Utility power is lost
2. Emergency (generator) power is detected
3. Transfer switch set to receive power from the emergency bus
The control system uses this data to implement proper management of the following
functions:
1. AC Power Fail alarm
2. HVAC utilization when on generator power
3. DC plant load reconnect
Details of the specific uses of this data in the executable logic are contained in Section 3,
Sequence of Operation.
2.5
Front Panel Display and Keypad
The front panel display (Figure 2-3) is a backlit LCD, 2 rows x 20 characters. The keypad
contains 6 tactile feedback pushbutton keys. Home display data are:
Inside Temp: Building internal temperature in degrees Fahrenheit.
AUTO: Indicates that control logic is being implemented automatically by the
controller in Unmanned mode.
MANNED: Indicates that control logic is being implemented automatically by
the controller in Manned mode.
MANUAL: Indicates that manual controls have been selected via the front panel
keypad and On/Off status of controls is selected manually.
SHED: DC Plant Load Shedding sequence is in progress.
Alarms #: Indicates the number of currently active alarms.
Figure 2-3 Model 2435 – CCM
Front Panel Display Keypad
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
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Instruction Manual
Figure 2-4 illustrates in flow diagram form the Primary Menu and keypad entries to access
desired data and functions. Pressing a key will cause requested data to be displayed and
changes to variables may be made using the ( + ), ( - ) and ENTER keys. Following a
change, the display will return to home data. Also, during keypad activity, if there is a
period of inactivity of 45 seconds, the display will return to home data. Home data may
also be returned immediately by pressing the CONTROLS key.
Intelesite – Primary Menu
Inside Temp
77.9F
AUTO Alarms 0
S
+
Set Points
sub menu
A
Outside Temp
-21.9%
Inside RH
39%
E
System Management
sub menu
+
Alarms
sub menu
C
ATS Position
Utility
+
Controls
sub menu
Site Voltage
51.2V
+
Figure 2-4 Intelesite Primary Menu
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
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Instruction Manual
2.5.1
Set Points Keys
Following are descriptions of the set points that may be displayed and changed. All
temperatures are in degrees Fahrenheit. Also shown are factory default set points. Figure 25 illustrates the Set Points Sub-Menu in flow diagram form.
Set Point Name
Unmanned
HVAC
Manned HVAC
DC Fan Cooling
DC Fan Hi Tmp
Heating
Description
Default
Set point temperature at which the controller will turn on the lead air conditioner when the
building is unoccupied. The lag air conditioner will be turned on at a set point which is a
fixed temperature delta above the lead set point. The backup air conditioner will be turned
on at a set point which is the same temperature delta above the lag set point. The default
temperature delta is 3 °F and may be modified in System Management Functions: System
SP Modify.
Set point temperature at which the controller will turn on the lead air conditioner when the
building is occupied. The lag air conditioner will be turned on at a set point which is a fixed
temperature delta above the lead set point. The backup air conditioner will be turned on at a
set point which is the same temperature delta above the lag set point. The default
temperature delta is 3 °F and may be modified in System Management Functions: System
SP Modify.
Minimum building internal temperature at which the controller will implement forced air
primary cooling. This is one of three conditions which must be satisfied to implement this
cooling mode. The other two are maximum external temperature and maximum internal
relative humidity.
Set point temperature at which forced air cooling is initiated regardless of economizer
algorithm criteria or HVAC status.
77 oF
72 oF
69 oF
85 °F
63 °F
Hi Tmp Alm
Set point temperature at which the controller will turn on the lead heater. The lag heater will
be turned on at a set point which is a fixed temperature delta below the lead set point. The
backup heater will be turned on at a set point which is the same temperature delta below the
lag set point. The default temperature delta is 3 °F and may be modified in System
Management Functions: System SP Modify.
Maximum building internal relative humidity at which the controller will implement forced
air primary cooling.
Maximum external (outside air) temperature at which the controller will implement forced
air primary cooling.
Set point temperature at which the controller will generate a high temperature alarm.
Low Tmp Alm
Set point temperature at which the controller will generate a low temperature alarm.
45 oF
Hi Tmp Shtdn
Set point temperature at which the controller will initiate the Emergency Shutdown on High
Temperature sequence.
110 oF
Hi Humid Alm
Load Shed T1
Set point relative humidity at which the controller will generate a high humidity alarm.
DC bus voltage at which the controller will shed Level 1 BR’s.
DC bus voltage at which the controller will shed Level 2 BR’s.
DC bus voltage at which the controller will shed Level 3 BR’s.
Internal temperature at which the controller will shed Level 1 BR’s.
Load Shed T2
Internal temperature at which the controller will shed Level 2 BR’s.
96 oF
Load Shed T3
Internal temperature at which the controller will shed Level 3 BR’s.
99 oF
Low DC Alarm:
DC bus voltage at or below which the controller issues a DC Power Fail alarm.
-43.2
VDC
RH Max:
Ext Tmp Max:
Load Shed V1
Load Shed V2
Load Shed V3
60%
65 oF
90 oF
70%
-46 VDC
-45 VDC
-44 VDC
93 oF
Table 2-2 Set Points Descriptions
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 12 of 40
Instruction Manual
Intelesite – Set Points Sub-Menu
Inside Temp
77.9F
AUTO Alarms 0
Set Point
Auto 5 seconds
Change Setpoint
Unmanned HVAC
-
Manned HVAC
DC Fan Hi Tmp
75F
69F
85F
+
Heating
-
63F
+
RH Max
-
60%
+
Ext Tmp Max
-
65F
+
Hi Tmp Alm
-
90F
+
Lo Tmp Alm
-
45F
+
Hi Tmp Shtdn
-
110F
Same as Unmanned HVAC
Example above.
+
Hi Humid Alm
-
70%
+
Load Shed V1
-
-46.0V
+
Ld Shed V2
-
-45.0V
+
Ld Shed V3
-44.0V
+
Load Shed T1
93F
+
Load Shed T2
96F
+
Load Shed T3
-
Setpoint Stored
Unmanned HVAC
+
-
-
+/E
72F
DC Fan Cooling
-
77F
+
-
-
E
+
-
+
77F
Modify Setpoint
Unmanned HVAC
99F
+
Low DC Alarm
-43.2V
Figure 2-5 Intelesite Set Points Sub-Menu
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
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Instruction Manual
2.5.2
Alarms Keys
Following are descriptions of the alarms that may be displayed. Next to the description of
the alarm is the status: On or Off. Figure 2-6 illustrates the Alarms Sub-Menu in flow
diagram form.
Alarm Name
High Temp
Low Temp
Intrusion
Smoke
DC Pwr Fail
HVAC1 Fail
HVAC2 Fail
HVAC3 Fail
Description
Building internal temperature is greater than the High Temperature Alarm Set Point.
Building internal temperature is less than the Low Temperature Alarm Set Point.
The door of the structure has been opened and intrusion has not been acknowledged.
Smoke alarm. Initiate the Emergency Shutdown on Detection of Smoke sequence. All
HVAC equipment and DC exhaust fan are turned off.
DC bus voltage has fallen below the Low DC Plant Voltage Alarm Set Point.
Air conditioner 1 has failed. Air conditioners 2 and 3 only are used for cooling.
Air conditioner 2 has failed. Air conditioners 1 and 3 only are used for cooling.
Air conditioner 3 has failed. Air conditioners 1 and 2 only are used for cooling. If all 3 air
conditioners have failed, Blowers 1, 2 and 3 and the DC exhaust fan are turned on.
DC Fan Fail
The DC exhaust fan has been called and the motor status input to the FCM has failed to
prove.
High Humid
Building internal relative humidity is greater than the High Humidity Alarm Set Point.
Signal output from the outside air temperature probe has fallen below a failure threshold
level.
Temp Probe Fail
Int Temp Sens Fail
Discovery Error
AC Pwr Fail
Emer Pwr Detect
Either internal temperature or internal relative humidity reading is outside permissible
limits:
Temperature > 200° F or < -50 °F
Relative Humidity > 100% or < 0%
The Discovery function has been completed and no HCM’s have been discovered on the
Intelesite Bus.
Commercial AC power is lost.
Emergency power has been detected of the correct voltage and frequency.
Temp Shutdown
Building internal temperature has reached the High Temperature Shutdown Set Point or
Emergency Shutdown has been manually initiated through the external shutdown switch.
The controller initiates the Emergency Shutdown on High Temperature or External
Command sequence.
Emer Shutdown
Emergency/High Temperature Shutdown Imminent alarm issued at 0.25 second intervals
for a period of 5 seconds, following which Emergency Shutdown is initiated.
FCM Comms Fail
A communications failure has occurred between the CCM and the FCM.
DCM Comms Fail
DC Fan Fail
A communications failure has occurred between the CCM and the DCM.
The DC exhaust fan has been called and the motor status input to the FCM has failed to
prove.
HCM Comms Fail
A communications failure has occurred between the CCM and the HCM.
Table 2-3 Alarm Name Descriptions
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
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Instruction Manual
Intelesite – Alarms Sub-Menu
Inside Temp
77.9F
AUTO Alarms 0
Auto
45 secs
Alarms
Alarm status
High Temp
Controls
(typical)
Off
+
Low Temp
-
Off
+
Intrusion
Off
+
Smoke
Off
+
-
DC Pwr Fail
Off
+
HVAC1 Fail
Off
+
HVAC2 Fail
-
Off
+
HVAC3 Fail
-
Off
+
High Humid
-
+
Temp Probe Fail
Off
On
+
-
IntTemp Sens Fail Off
-
+
Discovery Error
Off
+
-
AC Pwr Fail
Off
+
-
Emer Pwer Detect Off
+
-
Temp Shutdown
-
Off
+
Emer Shutdown
Off
+
FCM
Comms Fail
DCM
Comms Fail
-
Off
+
-
Off
+
DC Fan Fail
Off
+
HCM
Comms Fail
Off
Figure 2-6 Intelesite Alarms Sub-Menu
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 15 of 40
Instruction Manual
2.5.3
Controls Keys
Following are descriptions of the controls whose On/Off status may be viewed when in
AUTO (Automatic) mode, or viewed and changed when in MANUAL mode. Figure 2-7
illustrates the Controls Sub-Menu in flow diagram form.
Control
Description
DC Exhaust Fan
DC Exhaust Fan
Shunt Trip
Close two control relays to shunt-trip main DC power feed
HVAC1 Compressor
Air Conditioner 1 Compressor
HVAC2 Compressor
Air Conditioner 2 Compressor
HVAC3 Compressor
Air Conditioner 3 Compressor
HVAC1 Blower
Blower 1
HVAC2 Blower
Blower 2
HVAC3 Blower
Blower 3
HVAC1 Heater
Heater 1
HVAC2 Heater
Heater 2
HVAC3 Heater
Heater 3
DC Load Shed 1
Close Load Shed Level 1 control relay
DC Load Shed 2
Close Load Shed Level 2 control relay
DC Load Shed 3
Close Load Shed Level 3 control relay
Table 2-4 Controls Descriptions
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 16 of 40
Instruction Manual
Intelesite – Controls Sub-Menu
Inside Temp
77.9F
AUTO Alarms 0
Controls
Control Mode
Mode
AUTO
-
Sel Control Mode
Auto Control State
+
Control Status
DC Exhaust Fan
-
Off
+
Shunt Trip
-
E
E
Sel Control Mode
Manual Control State
?
+
HVAC1 Compressor ?
-
+
HVAC2 Compressor ?
-
+
HVAC3 Compressor ?
-
+
HVAC1 Blower
-
HVAC2 Blower
-
?
+
DC Load Shed 2
-
?
+
DC Load Shed 1
-
?
+
HVAC3 Heater
-
?
+
HVAC2 Heater
-
?
If AUTO Mode, View Only
If MANUAL Mode press Enter and Toggle
using “+” or “-“
If ? The device is not communicating
+
HVAC1 Heater
-
?
+
HVAC3 Blower
+
?
+
?
+
DC Load Shed 3
?
Figure 2-7 Intelesite Controls Sub-Menu
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 17 of 40
Instruction Manual
2.5.4
Plus and Minus Keys
The (+) and (-) keys are used to scroll through set points, alarms, controls and system
management functions and to increase/decrease values for changes.
2.5.5
Enter Key
The ENTER key is used to execute changes. It is also used to access System Management
Functions. These are largely configuration functions which are set when initially
commissioning the controller for operation. Following are descriptions of those functions.
Figure 2-8 illustrates the System Management Sub-Menu in flow diagram form.
2.5.5.1
System Management Functions
Function
Description
Default
Select HVAC Lead
Select HVAC unit 1, 2 or 3 as the lead.
Lead Xchg Period
Selects the lead exchange period, in days, from 0 to 30, during which the
selected HVAC unit, 1, 2 or 3, will be called as the lead. At the expiration of
the period, the next sequentially numbered HVAC unit will be called as the
lead. If 0 is selected, lead exchange is disabled and the selected HVAC unit
1, 2 or 3, is the lead constantly.
7 Days
MANUAL Timeout
Selects the MANUAL mode timeout period, in hours, from 1 to 24. If
MANUAL mode is selected, when this period of time expires, the controller
will revert to AUTO mode. This is a safeguard against controlled devices
being turned on manually and inadvertently left to run indefinitely.
8 Hours
Short Cycle Delay
Selects the short cycle delay, in minutes, from 1 to 5. When an air
conditioner is turned off, this delay period commences. The air conditioner
will not be called again until the expiration of the delay period to prevent
compressor short cycling.
This function is used to indicate to the controller the presence or absence of
an automatic transfer switch at the site. 0 indicates present (Pres), 1
indicates absent (Abs). If present, the controller will monitor the normally
closed contacts of the ATS for utility power, emergency power and ATS
position.
5 Minutes
ATS Switch
1
0
Enable Ext Tmp Probe
If the external (outside air) temperature probe is used, this function is
enabled. If not, the function is disabled.
Enable
Enable Int RH
If the relative humidity sensor is used, this function is enabled. If not, the
function is disabled.
Enable
Sensor Calibration
Enables calibration of the local (CCM) internal temperature sensor, external
temperature probe, internal relative humidity sensor and the temperature
sensors in each of the HCM’s. An offset is applied to match the reading of
the sensor being calibrated to that of an independent, calibrated
measurement device.
Set User PIN
Enables entry of a factory programmed Master PIN, which in turn enables
entry of a User PIN if password security is desired for making set point,
AUTO/MANUAL and configuration changes. Security is discussed in
Section 2.4 below.
0000
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Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
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Instruction Manual
Function
Description
Version V####
Indicates the version of firmware and logic programmed into the controller.
This is factory programmed firmware, not subject to change by the operator.
Restore Deflt SP
When this function is executed, all set points and configuration parameters
are restored to factory default values.
Voltage Calibration
Enables two point (factory) calibration and single point (site) calibration of
DC plant voltage analog input.
Restart CCM is an execute function. Following an Emergency Shutdown on
High Temperature or External Command, restart is required to resume
normal operation. Following load shedding with temperature, restart may be
executed to terminate the Reconnect Delay and allow the Reconnect
sequence to begin. After pressing the ENTER key to execute the function, a
30 second countdown is initiated prior to resumption of normal operation.
Display or change clock setting, 24 hour, hours, minutes, seconds.
Restart CCM
Time
Volt Load Shed
Default
Disabled
Temp Load Shed
This function enables or disables load shedding as a function of DC plant
bus voltage.
This function enables or disables load shedding as a function of temperature.
Diagnostics
Reserved for Sierra factory and service representative use only.
HVAC/Gen Config
This function enables selection of zero, 1, 2 or 3 HVAC units to run when on
generator power. If 1 is chosen, it enables selection of the specific unit to be
run. If zero is chosen, it indicates that the generator is < 12 KW.
Discovery
Displays currently active HVAC units. Executes the Discovery function for
a period of 30 seconds.
Set Point Summary
Displays summaries of manned and unmanned air conditioning set points
and heating set points.
Set Load Shed Min
Selects the minimum level of load shedding (none, 1, 2 or 3) to enforce
when on generator power
Selects forced air primary cooling or HVAC as the preferred method of
cooling
Fan/HVAC Preference
Disabled
1
1
Fan Preferred
Bin Input Deflt
Configures input relays to be normally open or normally closed.
NC
Reed Switch NO/NC
Configures output relays to be normally open or normally closed.
NO
Table 2-5 System Management Functions Descriptions
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 19 of 40
Instruction Manual
Figure 2-8 Intelesite System Management Sub-Menu
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 20 of 40
Instruction Manual
2.5.6
Security PIN Codes
The Intelesite system is factory configured for open access to all functions. The user has
the option to enforce PIN code security to prevent unauthorized set point,
AUTO/MANUAL status or configuration changes. To implement PIN code security:
1. Enter System Management Functions and scroll to Set User PIN.
2. Press the ENTER key and use the ( + ), ( - ) and ENTER keys to enter the Master PIN:
1 2 3 4. The Master PIN is factory programmed and cannot be changed.
3. Following entry of the Master PIN, a prompt is displayed to enter a User PIN. Enter a 4digit User PIN. The factory default User PIN is 0 0 0 0, which disables security
protection. Entry of any other 4-digit PIN will automatically enforce security.
When security is enforced, initial keypad activity to make a set point change,
AUTO/MANUAL status change or configuration change in system management functions
will prompt a User PIN entry. When a valid PIN has been entered, it will remain in force
until such time that there is no keypad activity for a period of 15 minutes. Thereafter, the
PIN will have to be re-entered.
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
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Instruction Manual
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Instruction Manual
3
3.1
Sequence of Operation
Description
The following tables describe the automatic sequence of operation of the Intelesite Model
2435 Cell Site Environment Control System. To operate to this sequence, the controller
must be in AUTO mode of operation.
HVAC COOLING – MANNED MODE: Automatic control of 2 or 3 air
conditioners using lead/lag/backup and demand logic when the building is
occupied.
HVAC COOLING – UNMANNED MODE: Automatic control of 2 or 3 air
conditioners using lead/lag/backup and demand logic when the building is not
occupied.
HEATING: Automatic control of 2 or 3 heaters using lead/lag/backup and
demand logic.
FORCED AIR PRIMARY COOLING: Automatic control of the DC exhaust
fan for primary cooling under set point conditions of internal temperature,
maximum external temperature and maximum internal relative humidity.
FORCED AIR COOLING – HIGH TEMPERATURE: Automatic control of
the DC exhaust fan under conditions of building high temperature without the set
point constraints of primary cooling.
EMERGENCY SHUTDOWN ON HIGH TEMPERATURE OR
EXTERNAL COMMAND: Shutdown of all HVAC units and DC exhaust fan
and shunt-trip main DC power feed. Controller Restart is required to resume
normal operation.
EMERGENCY SHUTDOWN ON DETECTION OF SMOKE: Immediate
shutdown of all HVAC units and DC exhaust fan.
DC PLANT LOAD SHEDDING – VOLTAGE: Automatic shedding of DC
load as a function of decrease in DC bus voltage.
DC PLANT LOAD SHEDDING – TEMPERATURE: Automatic shedding of
DC load as a function of building internal temperature.
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Instruction Manual
Control
Description
Note: The site is considered manned when the system is triggered by the site
occupied switch and/or keypad activity, with a 2 hour timeout.
Calls Lead Compressor and Blower when internal temperature exceeds the
Manned HVAC Set Point.
Lead Compressor On
Lead Blower On
Calls Lag Compressor and Blower if Lead Compressor is on and internal
temperature increases by the Temperature Delta.
Lag Compressor On
Lag Blower On
Backup Compressor On
Backup Blower On
Calls Backup Compressor and Blower if Lead and Lag Compressors are on and
internal temperature increases by the Temperature Delta.
Note: In the sequence above, lead/lag/backup logic determines which air
conditioner, 1, 2 or 3 is turned on first.
Compressors and blowers are turned off:
1. When internal temperature drops below the Manned HVAC Set Point
minus the Temperature Hysteresis.
2. In Emergency Shutdown on detection of smoke.
3. In Emergency Shutdown on high temperature or external command.
4. If Commercial Power Loss input is true, emergency power is detected
and ATS is on emergency power (Shut down none, 1, 2 or 3 units, user
configurable).
Compressors Off
Blowers Off
Table 3-1 HVAC Cooling – Manned Mode
Control
Description
Calls Lead Compressor and Blower when internal temperature exceeds the
Unmanned HVAC Set Point.
Lead Compressor On
Lead Blower On
Calls Lag Compressor and Blower if Lead Compressor is on and internal
temperature increases by the Temperature Delta.
Lag Compressor On
Lag Blower On
Backup Compressor On
Backup Blower On
Calls Backup Compressor and Blower if Lead and Lag Compressors are on and
internal temperature increases by the Temperature Delta.
Note: In the sequence above, lead/lag/backup logic determines which air
conditioner, 1, 2 or 3 is turned on first.
Compressors Off
Blowers Off
Compressors and blowers are turned off:
1. When internal temperature drops below the Unmanned HVAC Set Point
minus the Temperature Hysteresis.
2. In Emergency Shutdown on detection of smoke.
3. In Emergency Shutdown on high temperature or external command.
4. If Commercial Power Loss input is true, emergency power is detected
and ATS is on emergency power (Shut down none, 1, 2 or 3 units, user
configurable).
Table 3-2 HVAC Cooling – Unmanned Mode
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
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Instruction Manual
Control
Lead Heater On
Lead Blower On
Lag Heater On
Lag Blower On
Backup Heater On
Backup Blower On
Description
Calls Lead Heater and Blower when internal temperature drops below Heating
Set Point.
Calls Lag Heater and Blower if Lead Heater is on and internal temperature
decreases by the Temperature Delta.
Calls Backup Heater and Blower if Lead and Lag Heaters are on and internal
temperature decreases by the Temperature Delta.
Note: In the sequence above, lead/lag/backup logic determines which heater, 1, 2
or 3 is turned on first.
Heaters Off
Blowers Off
Heaters and Blowers are turned off:
1. When internal temperature rises above the Heating Set Point plus the
Temperature Hysteresis.
2. In Emergency Shutdown on detection of smoke.
3. In Emergency Shutdown on high temperature or external command.
4. If Commercial Power Loss input is true, emergency power is detected
and ATS is on emergency power (Shut down none, 1, 2 or 3 units, user
configurable).
Table 3-3 Heating
Control
DC Exhaust Fan On
DC Exhaust Fan Off
Description
The DC Exhaust Fan is turned on when commercial or generator power are not
present for 2 minutes or the following conditions exist:
Internal Temperature >= DC Fan Cooling Set Point.
External Temperature <=External Temperature Maximum Set Point.
Internal Humidity <= RH Maximum Set Point.
The DC Exhaust Fan is turned off when commercial or generator power is
restored and :
1. When internal temperature drops below DC Fan Cooling Set Point
minus the Temperature Hysteresis.
2. If the external temperature rises above the External Temperature
Maximum Set Point.
3. If the internal humidity rises above the RH Maximum Set Point.
4. If the internal temperature reaches the Manned or Unmanned Set Point,
as appropriate.
5. In Emergency Shutdown on detection of smoke.
6. In Emergency Shutdown on high temperature or external command.
Table 3-4 Forced Air Primary Cooling
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Instruction Manual
Control
Description
DC Exhaust Fan On
The DC Exhaust Fan is turned on when the internal temperature exceeds the DC
Fan High Temperature Set Point.
DC Exhaust Fan Off
The DC Exhaust Fan is turned off:
1. When the internal temperature drops below the DC Fan High
Temperature Set Point minus the Temperature Hysteresis.
2. In Emergency Shutdown on detection of smoke.
3. In Emergency Shutdown on high temperature or external command.
Table 3-5 Forced Air Cooling – High Temperature
Control
Description
Blowers, Compressors,
Heaters Off
1.
DC Exhaust Fan Off
2.
Main DC Power Off
3.
4.
5.
Emergency Shutdown has been requested by external shutdown switch
or internal temperature has exceeded the High Temperature Shutdown
Set Point.
Issue Emergency/High Temperature Shutdown Imminent Alarm at 0.25
second intervals for 5 seconds.
Immediately turn off all HVAC Blowers, Compressors, Heaters.
Immediately turn off DC Exhaust Fan.
After 5 seconds, close 2 control relays to shunt-trip main DC power
feed.
Note: Following Emergency Shutdown, Controller restart is necessary to resume
normal operation.
Table 3-6 Emergency Shutdown on High Temperature or External Command
Control
Blowers, Compressors,
Heaters Off
Description
1.
2.
3.
Emergency Shutdown has been activated by smoke detector alarm.
Immediately turn off all HVAC Blowers, Compressors, Heaters.
Immediately turn off DC Exhaust Fan.
DC Exhaust Fan Off
Table 3-7 Emergency Shutdown on Detection of Smoke
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
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Instruction Manual
Control
Description
This sequence is enabled under all conditions of site power: Commercial AC,
Generator or Battery. It is not dependent upon the state of the Commercial
Power Loss Input.
DC Load Shed Level 1 On
Close control relay to shed DC load two (2) minutes (DC Load Shed Delay) after
DC Plant voltage drops to and remains below Load Shed V1 Set Point.
DC Load Shed Level 2 On
Close control relay to shed DC load two (2) minutes (DC Load Shed Delay) after
DC Plant voltage drops to and remains below Load Shed V2 Set Point.
DC Load Shed Level 3 On
Close control relay to shed DC load two (2) minutes (DC Load Shed Delay) after
DC Plant voltage drops to and remains below Load Shed V3 Set Point.
DC Load Shed Level 3 Off
1.
2.
DC Load Shed Level 2 Off
1.
2.
DC Load Shed Level 1 Off
1.
2.
Note:
1.
If commercial power on, open control relay to reconnect load when DC
Plant voltage rises above Load Shed V3 Set Point plus Load Shed
Hysteresis (V).
If generator power on, after 1 minute delay, open control relay to
reconnect load when DC Plant voltage rises above Load Shed V3 Set
Point plus Load Shed Hysteresis (V).
If commercial power on, open control relay to reconnect load when DC
Plant voltage rises above Load Shed V2 Set Point plus Load Shed
Hysteresis (V).
If generator power on, after 2 minute delay, open control relay to
reconnect load when DC Plant voltage rises above Load Shed V2 Set
Point plus Load Shed Hysteresis (V).
If commercial power on, open control relay to reconnect load when DC
Plant voltage rises above Load Shed V1 Set Point plus Load Shed
Hysteresis (V).
If generator power > 12 KW on, after 3 minute delay, open control relay
to reconnect load when DC Plant voltage rises above Load Shed V1 Set
Point plus Load Shed Hysteresis (V).
If commercial power on, load is reconnected sequentially, Levels 3, 2
and 1, with a 30 second delay between levels.
Table 3-8 DC Plant Load Shedding - Voltage
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Instruction Manual
Control
Description
DC Load Shed Level 1 On
DC Load Shed Level 2 On
DC Load Shed Level 3 On
DC Load Shed Level 3 Off
1.
Close control relay to shed DC load two (2) minutes (DC Load Shed
Delay) after Internal Temperature exceeds and remains above Load
Shed T1 Set Point.
2. Initiate Reconnect Delay timer.
1. Close control relay to shed DC load two (2) minutes (DC Load Shed
Delay) after Internal Temperature exceeds and remains above Load
Shed T2 Set Point.
2. Reset and initiate Reconnect Delay timer.
1. Close control relay to shed DC load two (2) minutes (DC Load Shed
Delay) after Internal Temperature exceeds and remains above Load
Shed T3 Set Point.
2. Reset and initiate Reconnect Delay timer.
Open control relay to reconnect load when Internal Temperature drops below
Load Shed T3 Set Point minus Load Shed Hysteresis (T).
DC Load Shed Level 2 Off
Open control relay to reconnect load when Internal Temperature drops below
Load Shed T2 Set Point minus Load Shed Hysteresis (T).
DC Load Shed Level 1 Off
Open control relay to reconnect load when Internal Temperature drops below
Load Shed T1 Set Point minus Load Shed Hysteresis (T).
Notes:
1.
2.
Reconnect sequence begins only after expiration of Reconnect Delay or
Controller Restart.
Load is reconnected sequentially, Levels 3, 2 and 1, with a 30 second
delay between levels.
Table 3-9 DC Plant Load Shedding – Temperature
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
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Instruction Manual
Alarm Condition
Description
High Temperature
Building internal temperature is greater than the High Temperature Alarm Set
Point.
Low Temperature
Building internal temperature is less than the Low Temperature Alarm Set Point.
Intrusion
The door of the structure has been opened and intrusion has not been
acknowledged.
Smoke
DC Power Fail
HVAC 1 Fail
HVAC 2 Fail
Smoke alarm. Initiate the Emergency Shutdown on Detection of Smoke
sequence. All HVAC equipment and DC exhaust fan are turned off.
DC bus voltage has fallen below the Low DC Plant Voltage Alarm Set Point.
Air conditioner 1 has failed. Air conditioners 2 and 3 only are used for cooling.
Air conditioner 2 has failed. Air conditioners 1 and 3 only are used for cooling.
HVAC 3 Fail
Air conditioner 3 has failed. Air conditioners 1 and 2 only are used for cooling. If
all 3 air conditioners have failed, Blowers 1, 2 and 3 and the DC exhaust fan are
turned on.
High Humidity
Building internal relative humidity is greater than the High Humidity Alarm Set
Point.
Temperature Probe Fail
Signal output from the outside air temperature probe has fallen below a failure
threshold level.
Internal Temperature
Sensor Fail
Discovery Error
AC Power Fail
Emergency Power
Detected
The temperature sensor chip on the CCM failed.
No HCM’s are connected to the CCM
Commercial AC power is lost.
Emergency power has been detected of the correct voltage and frequency.
Temperature Shutdown
Building internal temperature has reached the High Temperature Shutdown Set
Point or Emergency Shutdown has been manually initiated through the external
shutdown switch. The controller initiates the Emergency Shutdown on High
Temperature or External Command sequence.
Emergency/High
Temperature Shutdown
Imminent
Emergency/High Temperature Shutdown Imminent alarm is issued at 0.25
second intervals for a period of 5 seconds, following which Emergency
Shutdown is initiated.
FCM Comms Fail
DCM Comms Fail
HCM Comms Fail
Summary Alarm
Control System Failure
Communication failure between FCM and CCM.
Communication failure between DCM and CCM.
Communication failure between HCM and CCM.
Common alarm to EAS indicating one or more system alarms are present.
Control system has failed and automatically reverted to Fail-Safe state.
Table 3-10 Alarms
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Instruction Manual
4
4.1
Maintenance, Calibration and Service
Periodic Maintenance
The only periodic maintenance required of the Intelesite system is regular inspection of the
CCM and HCM’s for dust or dirt build-up. The cover and base of the CCM enclosure and
the cover of the HCM have vent slots to enable internal circulation of ambient air past the
internal temperature and relative humidity sensors. The vent slots are located on vertical
surfaces to minimize ingress of dust and dirt. When the HVAC system is shut down for
service, it is recommended that power also be removed from the CCM. The front covers of
the CCM and HCM’s should be removed to inspect for dust or dirt. Any build-up should be
removed with a dry instrument such as compressed air or a small, dry paint brush.
4.2
Sensor Calibration
The system temperature and relative humidity sensors should be checked annually. This
can be done by comparing their readings with those of an independent, calibrated
measurement device. Agreement should be within +/- 1° F and +/- 2% RH. If calibration is
required, the following procedure is used.
1. Enter System Management Functions and scroll to Sensor Calibration.
2. Press the ENTER key and scroll to the appropriate entry:
Int Sens Calib
Ext Temp Site Calib
Int RH Calib
HCM Temp Calib 1
HCM Temp Calib 2
HCM Temp Calib 3
3. Press the ENTER key to display the current reading. Use the ( + ) key to apply
positive offset to increase the reading to match that of the calibrated device. Increments
are 1 °F and 1% RH. Use the ( - ) key to apply negative offset.
4. Press the ENTER key to store the data.
4.3
Voltage Calibration
The analog input circuitry measuring DC plant voltage should be checked annually. This
can be done by comparing this reading with that of an independent, calibrated
measurement device such as a digital volt meter. Agreement should be within +/- 0.1 VDC.
If calibration is required, the following procedure is used.
1. Enter System Management Functions and scroll to Voltage Calibration.
2. Press the ENTER key and scroll to Site Calibration.
3. Press the ENTER key to display measured DC plant voltage. Use the ( + ) key to
apply positive offset to increase the reading to match that of the calibrated device.
Use the ( - ) key to apply negative offset.
4. Press the ENTER key to store the data.
4.4
Service
The Intelesite system is fully modularized. Each module, CCM, FCM, DCM and HCM
contains one printed circuit assembly (PCA). All PCA components are soldered. Therefore,
field repairs are at the PCA level. To determine the nature and extent of any required
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Instruction Manual
repairs, two levels of diagnostics are available, Alarm Diagnostics and Diagnostics in
System Management Functions.
4.4.1
Alarm Diagnostics
The following table describes system alarms which are automatically generated by the
CCM’s self-diagnostics program. The table also describes appropriate diagnostic and
corrective actions.
Alarm Name
DC Fan Fail
Temp Probe Fail
Int Tmp Sens Fail
Discovery Error
FCM Comms Fail
DCM Comms Fail
HCM Comms Fail
Diagnostic/Corrective Action
The DC exhaust fan has been called and the motor status input to the FCM has failed to prove.
1. If the motor is running, check continuity of the motor status input to the FCM.
2. Check that the motor status input is wired correctly to P4 on the FCM.
3. If the alarm continues to exist, consult Sierra Factory Service.
Signal output from the outside air temperature probe has fallen below a failure threshold level.
1. Check that the wiring connection to TB 1 on the CCM is secure. See Figure A-1 in
Appendix.
2. Check that the jumpers J65 and J66are in the 1 and 2 positions, respectively, on the
CCM.
3. If alarm continues to exist, replace the Assembly, Temperature Sensor, Cable,
Adapter
Either internal temperature or internal relative humidity reading is outside permissible limits:
Temperature > 200° F or < -50 °F
Relative Humidity > 100% or < 0%
Replace Model SPK22122, Assembly, PCA, 2435-CCM
The Discovery function has been completed and no HCM’s have been discovered on the
Intelesite Bus.
1. Check that the RS-485 connections between the CCM and HCM’s are secure. See
Figures A-1 and A-3 in the Appendix.
2. Check power to the HCM’s and that the Run LED’s on the HCM’s are flashing. If
not, replace Model SPK22124, Assembly, PCA, 2435-HCM as necessary.
3. Repeat the Discovery function.
4. If the alarm continues to exist, consult Sierra Factory Service.
A communications failure has occurred between the CCM and the FCM.
1. Check that the RS-485 connections between the CCM and FCM are secure. See
Figures A-1 and A-4 in the Appendix.
2. Check power to the FCM and that the Run LED on the FCM is flashing. If not,
replace Model SPK22125 Assembly, PCA, Model 2435-FCM.
3. If the alarm continues to exist, consult Sierra Factory Service.
A communications failure has occurred between the CCM and the DCM.
1. Check that the RS-485 connections between the CCM and DCM are secure.
Figures A-1 and A-2 in the Appendix.
2. Check power to the DCM and that the Run LED on the DCM is flashing. If
replace Model SPK22123 Assembly, PCA, Model 2435-DCM.
3. If the alarm continues to exist, consult Sierra Factory Service.
A communications failure has occurred between the CCM and the HCM.
4. Check that the RS-485 connections between the CCM and HCM are secure.
Figures A-1 and A-3 in the Appendix.
5. Check power to the HCM and that the Run LED on the HCM is flashing. If
replace Model SPK22124 Assembly, PCA, Model 2435-HCM.
If the alarm continues to exist, consult Sierra Factory Service.
Table 4-1 Alarm Diagnostics
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 32 of 40
See
not,
See
not,
Instruction Manual
4.4.2
System Management Functions – Diagnostics
Corrective actions resulting from Alarm Diagnostics will generally return the system to full
functionality. If, however, more comprehensive diagnostics are required, Diagnostics in
System Management Functions must be used. This is a PIN code protected function. The
PIN code is fixed and is independent of either the Master or User PIN codes optionally
enforced for set point or configuration changes. This function is intended for use only by a
Sierra Service Representative or by the user under the direction of a Sierra Service
Representative.
4.4.3
Field Replacement Parts
The following parts may be replaced by the user in the field.
Sierra Part Number
2435-HCM
2435-OTP
2435-TSD
SPI22122
SPI22123
SPI22125
SPI49221
SPI49222
SPI69199
Description
PCA HVAC Control 2435
Outside Temperature Probe
Smoke Detector
PCA Central Control Mod 2435
PCA DC Load Shed Mod 2435
PCA DC Fan Control Mod 2435
Fuse 1A Class G
Fuse 10A Class G
Filter for 2435-FAS
Table 4-2 List of Intelesite Spare Parts
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 33 of 40
Instruction Manual
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Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 34 of 40
Instruction Manual
5
Product Specifications
2435-CCM Central Control Module
36 – 60 VDC, 30 mA at 48 VDC
Environmental:
Temperature:
Operating Range: 4° to 120° F (-20° to 50° C)
Storage Range: -22° F to 122° F (-30° to 50° C)
Humidity:
0 to 95% Non-Condensing
Front Panel:
Serial, Ethernet Interface (Optional)
Up to 3 Ethernet, RS232 or RS485 ProtoCessors
Integral Inputs
Enclosure
Sheet Metal Plated, Painted
Surface Mount
Dimensions 10.1” x 8.4” x 3.1” (HWD)
2435-DCM DC Control Module
36 – 60 VDC, 25 mA at 48 VDC
Analog Inputs:..1
DC Plant Voltage
Control Outputs: 5
Load Shed, N.O; 2A, 60 VDC (3)
Main DC Shunt Trip, N.O; 2A, 60 VDC (2)
Enclosure
Temperature
Relative Humidity
Installed in 2435-CCM Enclosure
2435-TSD Smoke Detector
11
Power:
External Alarm Inputs
Smoke Alarm
Intrusion
Generator Power
ATS Position
Utility Power
Spare (6)
5 – 8 VDC (supplied by 2435-CCM)
Detectors:
Smoke - photoelectric
Temperature Rate of Rise - Resistive
Alarm Output:
One SPST dry contact (2 amp @ 30 VDC)
Audible Alarm:
Analog Input
Outside Temperature (connect 2435-OTP)
Alarms:
68 db at 2900 Hz
Mounting
Double gang box
4 Firmware Configurable
1 Watchdog
Enclosure Dimension
Diameter 6.125”, Height 2”
Enclosure
Sheet Metal Plated, Painted
Surface Mount
Dimensions 14.6” x 14.1” x 3.0” (HWD)
2435-HCM HVAC Control Module
Power:
2435-OTP Outside Temperature Probe
Connection:
Terminate on CCM
Type:
Current - two terminal IC temperature transducer
Temperature Range:
24 VAC, 25 mA
-55° F to 150° F
Integral Input:
Mounting
Temperature
Digital Inputs:
Fan Motor
Spare (2)
Power:
Display:
LCD Alphanumeric (2 Rows x 20 Characters)
Front Panel Keypad
6 keys for Set Points, Alarms, Controls
Digital Inputs:
Spare
Control Outputs: 3
Power:
Wiring pull box type XX with ½” M-NPT
2
Enclosure
HVAC 1 Fail
Spare (1)
Injection molded, white weather shield, Diameter 6”,
Height 2”
Analog Input
Connection for optional Proving Air Temperature Sensor
Control Outputs: 4
Fan Assembly:
Cut-Out Dimension: 17.5” X 17.5”
Rain Hood Dimension: 18” X 22” W x H
Fan Motor: 48 VDC
Fan Capacity: 1,600 CFM
Compressor
Blower
Heater
Spare
Supply Air Assembly:
Enclosure
Face plate mounted for installation on double gang box
2435-FCM Fan Control Module
Power:
36 – 60 VDC, 24 mA at 48 VDC
Digital Inputs: 2
2435-FAS Forced Air System
Cut-Out Dimension: 15.5” X 37”
Rain Hood Dimension: 20” X 41” W x H
Filter Dimension: 15” X 37”
Filter Type: Permanent, Cleanable filter media, Meets
HF-1 of UL 94
Meant Time to Replace (MTTR): 5 minutes
Fan Motor Status
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 33 of 40
Instruction Manual
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Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 33 of 40
Instruction Manual
6
Warranty
SIERRA MONITOR CORPORATION warrants its environment controller products to be
free from defects in workmanship or material under normal use and service for two years
after date of shipment. SMC will repair or replace, without charge, any equipment found
to be defective during the warranty period. Final determination of the nature and
responsibility for defective or damaged equipment will be made by SMC personnel.
All warranties thereunder are contingent upon proper use in the application for which the
product was intended and do not cover products which have been modified or repaired
without SMC approval or which have been subjected to accident, improper maintenance,
installation or application, or on which original identification marks have been removed or
altered. This Limited Warranty also will not apply to interconnecting cables or wires,
consumables (i.e. calibration gases, batteries), nor to any damage resulting from battery
leakage.
In all cases SMC's responsibility and liability under this warranty shall be limited to the
cost of the equipment. The purchaser must obtain shipping instructions for the prepaid
return of any item under this warranty provision and compliance with such instruction shall
be a condition of this warranty.
Except for the express warranty stated above, SMC disclaims all warranties with regard to
the products sold hereunder including all implied warranties of merchantability and fitness
and the express warranties stated herein are in lieu of all obligations or liabilities on the
part of SMC for damages including but not limited to consequential damages arising out
of/or in connection with the use or performance of the product.
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 34 of 40
Instruction Manual
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Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 35 of 40
Instruction Manual
7
Appendix A
Figure 7-1 CCM Wiring Diagram
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 36 of 40
Instruction Manual
Figure 7-2 FCM Wiring Diagram
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 37 of 40
Instruction Manual
Figure 7-3 HCM Wiring Diagram
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 38 of 40
Instruction Manual
Figure 7-4 OTP Wiring Diagram
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 39 of 40
Instruction Manual
Figure 7-5 TSD Wiring Diagram
Sierra Monitor Corporation Π1991 Tarob Court ΠMilpitas, CA 95035
Phone: (408) 262 Р6611 ΠFax: (408) 262 Р9042
www.sierramonitor.com
Page 40 of 40