Product/Technical
Issue Date
MS4PMUHVT
09/30/02
MS4PMUHVT Multi-Stage Electronic
Temperature Control with Relay Pack
The MS4PMUHVT Multi-Stage Electronic Temperature
Control is intended for multi-stage temperature control
applications. The MS4PMUHVT control is specifically
designed for the control of applications with up to
four stages in the following configurations:
•
four cooling stages with common setpoint
•
four heating stages with common setpoint
•
four stages with deadband (two heating stages
and two cooling stages with common setpoint)
•
two independent sets of two dependent stages
(two heating stages and two cooling stages with
independent setpoints)
Figure 1: MS4PMUHVT Multi-Stage Electronic
Temperature Control with Relay Pack
Features and Benefits
❑ Single Package
Provides the functionality of multiple control
components at a cost-effective price.
❑ Easily Readable Display
Displays main sensor or evaporator sensor
temperatures; Helps troubleshoot control,
Provides alarm codes.
❑ Accurate, Interchangeable
Provides accurate control performance with
up to 300 feet (91 m) of sensor wiring. (An
offset is provided for longer wiring.)
Temperature Sensor
❑ Nonvolatile Memory
Retains user-programmed settings in event of
power loss
❑ Heavy-Duty Relays
Allow direct control of equipment; Reduce
installation time.
© 2002 Johnson Controls, Inc.
Part No. 24-8782-5, Rev. C
Code No. LIT-125195
1
www.johnsoncontrols.com
FCC Compliance Statement
This equipment has been tested and found to
comply with the limits for a Class A digital device
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when the equipment is
operated in a commercial environment. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area is
likely to cause harmful interference, in which case
the user will be required to correct the interference
at his/her own expense.
Canadian Compliance Statement
Operation
Mode Selection
Mode Selection allows selection of one of several
modes:
•
Direct mode for cooling applications
•
Reverse mode for heating applications
•
Deadband mode for applications requiring cooling
and heating with a common setpoint and a
deadband
•
Independent Setpoint mode for applications
requiring cooling and heating with one setpoint for
heating and a second (independent) setpoint for
cooling
This digital apparatus does not exceed the Class A
limits for radio noise emissions from digital
apparatus set out in the Radio Interference
Regulations of the Canadian Department of
Communications.
Stage Control
Several settings define the control functions for the
stages:
•
Setpoints and Differentials setting establish the
temperature-control ranges.
Application
•
Cycle Delays establish a set time interval between
heating or cooling cycle restarts to avoid excessive
cycling.
•
Soft Start controls the rate at which temperature
approaches the Setpoint on power-up or when
Binary Input Option 3 is selected. This feature is
useful when starting equipment where merchandise
in the controlled space needs to be slowly brought to
the desired temperature (Setpoint). If this feature is
used, the control activates up to four stages in
succession to slowly bring the sensed temperature
to the desired temperature (Setpoint) at the
user-selected rate.
IMPORTANT: The MS4PMUHVT Multi-Stage
Temperature Control is intended to control
equipment under normal operating conditions.
Where failure or malfunction of the MS4PMUHVT
control could lead to an abnormal operating
condition that could cause personal injury or
damage to the equipment or other property, other
devices (limit or safety controls) or systems (alarm
or supervisory systems) intended to warn of, or
protect against, failure or malfunction of the
MS4PMUHVT control must be incorporated into
and maintained as part of the control system.
The MS4PMUHVT control provides direct control in
many applications:
Alarm Management
Several settings define the control functions for alarms:
•
cooling tower pump and/or fan control
•
•
rooftop heating or cooling units
•
High and Low Temperature Alarms provide
notification of temperatures that exceed
user-designated high and low limits.
boiler or pump control
•
•
space temperature control
Alarm Time Delay keeps short-duration
temperature changes from triggering an alarm.
•
compressor or chiller staging
•
Alarm Differential keeps the alarm from cycling
rapidly on and off due to minor temperature
fluctuations.
•
Alarm Codes assist in troubleshooting.
The MS4PMUHVT control has four heavy-duty
relays. See electrical ratings in Table 6 for more
information.
2
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
Binary Input Response
Binary Input Function allows the user to select how
the control responds to a binary input (switch) if the
binary input contacts are open for a time (minutes)
longer than the Binary Input Time Delay.
Installation
See Mounting and Wiring for installation information.
Dimensions
1-3/4
(44)
Additional Features
The MS4PMUHVT control uses several other
settings to control specific features:
•
1-5/8
(42)
Keyboard Locking disables/enables change of
the setpoint and other functions, reducing
accidental or unauthorized changes of the
control settings.
•
Self-test Procedure initiates a cycle of all
outputs and tests all LEDs. See Initiating a
Manual Self-Test.
•
Dual Sensor Temperature Reset resets the
setpoint based on the difference between the
Auxiliary Temperature Sensor (ATS) and the
Setpoint to provide energy savings. See
Temperature Reset.
For additional information about control functions
and how to program them, see Programming the
Control and Control Functions.
7-15/16
(202)
3
(76)
3-5/8
(92)
2-3/8
(61)
Figure 3: Relay Pack with Mounting Bracket
Dimensions, in. (mm)
2-3/4
(70)
Control Module Front Panel
The control module has an LED display and buttons
for entering programming information and activating
various features.
2-5/16
(58)
The display has three LED digits and a minus
indicator. It displays a temperature range from
-40 to 176°F (-40 to 80°C) in increments of 1F° or
C°. The display also features three relay status
LEDs.
•
LED 1 indicates that the Stage 1 Relay is
energized.
•
LED 2 indicates that the Stage 2 Relay is
energized.
•
LED 3 indicates that the Stage 3 Relay is
energized.
6
(152)
3
(75)
2-11/16
(68)
1-1/8
(28)
1-3/8
(35)
Figure 4: Control Module Dimensions, in. (mm)
1/4
(6)
2
(50)
78-3/4
(2000)
Relay Status LEDs
Up
Button
Enter
Button
Figure 5: A99BB-200C Sensor Dimensions, in. (mm)
Down
Button
Figure 2: Control Module Front Panel and
Display
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
3
Mounting
The MS4PMUHVT control is not position-sensitive
but should be mounted for convenient wiring and
adjustment. The MS4PMUHVT control may be
mounted as a single unit or the control module and
relay pack may be separated and mounted
individually.
Mounting the MS4PMUHVT Control as a
Single Unit
Before mounting the relay pack, ensure that there is
sufficient space. Follow these steps to mount the
relay pack:
1. Hold the MS4PMUHVT control against the
surface and use it as a template to trace the
mounting slots.
2. Drill holes for mounting screws in the holes
indicated.
3. Use three screws (No. 8 or No. 10 size) to
mount the MS4PMUHVT control.
Mounting the Control Module and Relay Pack
Separately
Mount the relay pack and the control module within
18 in. (46 cm) of each other.
2. Drill holes for mounting screws in the slots indicated.
3. Use three screws (No. 8 or No. 10 size) to mount the
relay pack.
Mounting the Control Module
Before mounting the control module, ensure that there is
sufficient free space [at least 2-3/4 inches (70 mm)]
behind the mounting surface. Follow these steps to
mount the control module:
1. Cut a hole 1-3/16 x 2-13/16 inches (29 x 71 mm).
2. Remove the mounting clip from the control module.
3. Insert the control module into the hole.
4. Install the retaining clip and slide forward to adjust
for tightness.
5. Reconnect the wires on the terminals in the relay
pack to the corresponding terminals on the control
module. See Figures 7-9.
Control
Module
Mounting
Clip
Removing the Control Module from the
Relay Pack
Follow these steps to separate the control module
and the relay pack. See Figures 6-7.
1. Locate the mounting clip that holds the control
module to the mounting bracket on the relay
pack.
Figure 6: Removing the Mounting Clip and
Control Module
V2
2. Squeeze the forward portion of the mounting clip
together and slide the mounting clip back to
remove the mounting clip from the back of the
control module.
V1
3. Pull the control module out of the mounting
bracket on the relay pack.
4. Disconnect the wiring from the control module
and the relay pack terminals V1, V2, O1, and
O2. See Figures 7-9.
Mounting the Relay Pack
Before mounting the relay pack, ensure that there is
sufficient space. Follow these steps to mount the
relay pack:
4
D3
D4
1. Hold the relay pack with mounting bracket
against the surface and use as a template to
trace the mounting slots.
O1 O2
Figure 7: Relay Pack Terminal Positions on the
Circuit Board
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
Wiring
!
Table 1: Sensor Wire Size and Length
Wire Size and Length
18 AWG
20 AWG
22 AWG
WARNING: Risk of Electric Shock.
To avoid electric shock or damage to equipment,
disconnect all power supplies before wiring any
connections. More than one disconnect may be
necessary to completely de-energize equipment.
Wiring Sensors and Binary Inputs
Wire the sensors and binary input (if used) as shown
in Figures 8-9. The Sensor (S1 or S2) and Sensor
Common (SC) wires are interchangeable when
using the A99B temperature sensors. The binary
input shares a common terminal with the sensors.
12VAC
V1 V2
D
BLK
WHT
RED
GRN
O1 O2
V1
V2 O1
O2
Binary
Input
(Switch)
S2 SC S1
Sensor
Common
Auxiliary
Temperature
Sensor
Main
Temperature
Sensor
300-599 ft
190-374 ft
120-239 ft
1 F°
600-899 ft
375-564 ft
240-349 ft
2 F°
900+ ft
565+ ft
350+ ft
3 F°
165-329 m
105-204 m
65-129 m
1 C°
330-495 m
205-310 m
130-195 m
2 C°
Wiring the Relay Pack
!
Note: Black boxes indicate unused terminals.
Internal to Control
Offset
WARNING: Risk of Electric Shock.
To avoid electric shock or damage to equipment,
disconnect all power supplies before wiring any
connections. More than one disconnect may be
necessary to completely de-energize equipment.
See Figure 10 for arrangement of terminals on the
terminal block in the relay pack. See Figures 11-12 for
sample wiring diagrams. Follow these wiring guidelines:
•
All wiring must conform to the National Electrical
Code and local regulations.
Figure 8: Wiring the Control Module MS
•
Use 14 AWG copper wire for motor loads up to 12 FLA
and non-inductive loads up to 15 A.
Loosen screw to open terminal;
tighten screw to secure wiring.
•
Use 12 AWG copper wire with an insulation rating of
75°C (minimum) for motor loads up to 16 FLA and
non-inductive loads up to 20 A.
•
Use wire no longer than 50 feet (15 m).
•
All circuits must have a common disconnect and be
connected to the same pole of the disconnect.
V1 V2 O1 O2
D S2 SC S1
V1 V2 O1 O2
D S2 SC S1
Relay
Pack
Terminal
Block
Insert wiring here.
Note: Black boxes indicate unused terminals.
Figure 9: Rear View of the Control Module
Use Temperature Sensor Offset to compensate for
sensor leads longer than 300 ft (if °F is used) or
165 m (if °C is used). See Table 1 and Temperature
Management Functions: Temperature Sensor Offset.
Terminal
Labels
on
Circuit
Board
NO1 CM1
L2
120
(Not
NO2 CM2 NO4
Used)
NO3 NC1 CM3 NC3 240 NC2 CM4 NC4
Figure 10: Relay Pack Terminal Block
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
5
Note: All circuits must have a common disconnect and be connected to the same pole of the disconnect.
L1
L2
Internal to Relay Pack
Control Relay 1
240
120
NO1 CM1
NC1
Load 1
Control Relay 2
NO2
CM2
NC2
Load 2
Control Relay 3
NO3
CM3
NC3
Load 3
Control Relay 4
NO4
CM4
NC4
Load 4
Figure 11: Typical 240 VAC Relay Pack Wiring Connections
120 VAC
Neutral
Note: All circuits must have a common disconnect and be connected to the same pole of the disconnect.
Internal to Relay Pack
Control Relay 1
240
120
NO1 CM1
Load 1
NC1
Control Relay 2
NO2
Load 2
CM2
NC2
Control Relay 3
NO3
Load 3
CM3
NC3
Control Relay 4
NO4
CM4
NC4
Load 4
Figure 12: Typical 120 VAC Relay Pack Wiring Connections
6
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
Modes of Operation
The MS4PMUHVT control performs temperature
management for multi-stage applications. It can
automatically adjust the setpoint to save energy,
based on readings from the auxiliary temperature
sensor and the function settings.
Temperature
Interstage
Time
Delay
The illustrations on the following pages show the
modes of operation available on the MS4PMUHVT
control.
Interstage
Time
Delay
In Reverse Mode (heating applications), when Setpoint
is reached on a temperature rise the N.O. relay
contacts open, ending the On cycle of Stage 1.
Differential is the operational range of Stage 1.
Setpoint 2 is the offset from Setpoint that activates
Stage 2.
Differential 2 is the operational range of Stage 2.
Setpoint 3 is the offset from Setpoint that activates
Stage 3.
Differential 3 is the operational range of Stage 3.
Setpoint 4 is the offset from Setpoint that activates
Stage 4.
Interstage Time Delay is the minimum amount of time
between two successive stages when multiple stages
are called for in rapid sequence.
Off
Stage
2
Differential 2
Off
On
Stage
1
Differential
Off
Differential 4
Off
Stage
3
Differential 3
On
Setpoint is the desired temperature.
In Direct Mode (cooling applications), when Setpoint is
reached on a temperature drop, the Normally Open
(N.O.) relay contacts open, ending the On cycle of
Stage 1.
On
Interstage
Time
Delay
Direct Mode (Cooling) and Reverse Mode (Heating)
Direct mode is used for cooling applications. (See
Figure 13.) Reverse mode is used for heating
applications. (See Figure 14.) Where desirable, stages
may overlap or have space between them.
Stage
4
Setpoint 2
(Offset from
Setpoint)
Setpoint 4
(Offset from
Setpoint)
Setpoint 3
(Offset from
Setpoint)
Setpoint
Time
Figure 13: Direct Mode (Cooling)
Temperature
Off
Setpoint
Setpoint 2
Stage Differential (Offset from
1
Setpoint)
Setpoint 3
Off
(Offset from
On
Setpoint)
Stage Differential 2
Setpoint 4
2
(Offset from
Setpoint)
On
Off
Interstage
Time
Delay
Stage
Differential 3
3
Off
On
Stage Differential 4
4
Interstage
Time
Delay
On
Interstage
Time
Delay
Time
Figure 14: Reverse Mode (Heating)
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
7
Deadband Mode
Deadband mode is used for applications requiring
cooling and heating. Where desirable, stages may
overlap or have space between them. See Figure 15.
Differential is the operational range of Stage 1.
Setpoint is the desired temperature.
Setpoint 3 is the offset from the low end of the
deadband that activates Stage 3.
Setpoint 2 is width of the deadband, which is centered
on Setpoint.
Differential 3 is the operational range of Stage 3.
Differential 2 is the operational range of Stage 2.
Setpoint 4 is the offset from the high end of the
deadband that activates Stage 4.
In Direct Mode (cooling applications), the N.O. relay
contacts open, ending the On cycle when
Setpoint + (1/2 Setpoint 2) is reached on a
temperature drop.
Differential 4 is the operational range of Stage 4.
In Reverse Mode (heating applications), the N.O. relay
contacts open, ending the On cycle when Setpoint (1/2 Setpoint 2) is reached on a temperature rise.
Interstage Time Delay is the minimum amount of time
between two successive stages when multiple stages
are called for in rapid sequence.
Temperature
Interstage
Time Delay
On
Cooling
Stage 4
Differential 4
On
Off
Differential 2
Stage 2
Setpoint 4
(Offset from Stage 2)
Off
Setpoint + (1/2 Setpoint 2)
Setpoint 2 (Deadband)
(Centered on Setpoint)
Setpoint
Setpoint - (1/2 Setpoint 2)
Off
Setpoint 3
(Offset from Stage 1)
Differential
Stage 1
Off
On
Differential 3
Stage 3
Heating
On
Interstage
Time Delay
Time
Figure 15: Deadband Mode
8
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
Independent Setpoint Mode
Independent Setpoint mode is used for applications
requiring cooling and heating. Where desirable, stages
may overlap or have space between them. See
Figure 16.
Setpoint is the desired heating temperature. It is the
basis for the reverse stages.
In Reverse mode (heating applications), when Setpoint
is reached on a temperature rise, the N.O. relay
contacts open, ending the On cycle.
Setpoint cannot be set higher than Setpoint 2, nor can
Setpoint 2 be set lower than Setpoint. If overlapping
adjustment is attempted, the setting that is not being
adjusted will adopt the value of the setting that is being
adjusted.
Differential is the operational range of Stage 1.
Setpoint 2 the desired cooling temperature
programmed by the user. It is the basis for the direct
stages.
In Direct mode (cooling applications), when Setpoint is
reached on a temperature drop, the N.O. relay
contacts open, ending the On cycle.
Differential 2 is the operational range of Stage 2.
Setpoint 3 is the offset from Setpoint that activates
Stage 3.
Differential 3 is the operational range of Stage 3.
Setpoint 4 is the offset from Setpoint 2 that activates
Stage 4.
Differential 4 is the operational range of Stage 4.
Interstage Time Delay is the minimum amount of time
between two successive stages when multiple stages
are called for in rapid sequence.
Temperature
Interstage
Time Delay
Cooling
Stage 4
Stage 2
Differential 4
Setpoint 4
Differential 2
Setpoint
Stage 1
Differential
Setpoint 3
Stage 3
Differential 3
Heating
Interstage
Time Delay
Time
Figure 16: Independent Setpoint Mode
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
9
Programming the Control
Use this section to program the control module. After
programming, the control module retains its
programmed settings, even in the event of a power
failure or power-down.
Using the Control Module
During normal operation, the display shows the main
sensor temperature. See Figure 2.
•
Press Up or Down repeatedly to display the main
sensor temperature, auxiliary sensor temperature
and the binary input status.
•
Press Enter to display the Setpoint value.
After 15 seconds of inactivity, the display returns to
main sensor temperature.
Unlocking or Locking Access to Programming
1.
2.
3.
In sequence, press and hold Enter, Up,
and Down.
Hold these buttons until “- - -” displays.
Continue holding until the main sensor
temperature displays (approximately
10 seconds).
Selecting the Mode of Operation
1.
At the same time, press and hold
Enter and Down for approximately
three seconds.
2.
Press Up or Down until the display
code for the desired mode displays:
4d = Direct mode (cooling)
4r = Reverse mode (heating)
4b = Deadband mode (both)
4i = Independent Setpoint mode (both)
Press Enter to save the new setting.
3.
Changing the Setpoint in Independent Setpoint
Mode and Changing Other Function Settings in
All Modes
1.
2.
3.
Press and hold Enter for about 10
seconds. The display changes to HY.
(The display shows S1 if in Mode 4i.)
Press Up or Down until the desired
function displays. See Table 4 and
Control Functions.
Press Enter. The function’s existing
value displays.
4.
Press Up or Down until the desired
setting value displays.
5.
Press Enter to save the new value.
After 10 seconds of inactivity, the
display returns to normal operation.
Note: If Enter is not pressed, the new value is not
saved, and the control reverts to the previous saved
value.
Initiating a Manual Self-Test
IMPORTANT:
Disconnect controlled loads
before running the self-test procedure. Reconnect
controlled loads and cycle power to resume normal
operation.
1.
2.
In sequence, press and hold Up and
then Down.
Hold for five seconds.
Note: If Enter is not pressed, the new mode of
operation is not saved, and the control reverts to the
previous mode of operation.
Changing the Setpoint in Direct, Reverse, and
Deadband Modes
1.
2.
3.
4.
Press and hold Enter for
approximately three seconds.
Release Enter when the new Setpoint
value displays.
Press Up or Down to display the new
Setpoint value.
Press Enter to save the new setting.
Note: If Enter is not pressed, the new Setpoint
value is not saved, and the control reverts to the
previous Setpoint value.
10
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
Control Functions
Temperature Management Functions
SI (Displays in Mode 4i only) Setpoint is the primary
temperature setting (°F or °C) programmed by the
user. For information on function in each mode, see
Modes of Operation.
Temperature
Setpoint
Sensed
Temperature
30oF
S2, S3, S4 Setpoint 2, Setpoint 3, Setpoint 4 depend
on the mode used. For information on function in each
mode, see Modes of Operation.
HI, H2, H3, H4 Differentials are the difference (F° or
C°) between the value at which an output is switched
Off and the value at which an output is switched On
(relay contacts closing and opening, initiating or
ending an On cycle). For information on function in
each mode, see Modes of Operation.
HL, LL High and Low Setpoint Stops are
temperature values (°F or °C) that define how high or
low the primary Setpoint may be adjusted. Setpoint
stops deter unauthorized or accidental overadjustment
of Setpoint.
On
Load Demand
Off
On
Output Status
Off
Cycle Delay
Time
Figure 17: Cycle Delay
Cc Cycle Delay, Cooling establishes the minimum
time in minutes between two subsequent On cycles of
cooling (direct) stages. See Figure 17.
CH Cycle Delay, Heating establishes the minimum
time in minutes between two subsequent On cycles of
heating (reverse) stages. See Figure 17.
iS Interstage Time Delay is the minimum amount of
time between two successive stages when multiple
stages are called for in rapid sequence.
rt Soft Start controls the rate at which the controlled
temperature is allowed to approach Setpoint on power
up, both initially and when the binary input is
configured as remote shutoff. The setting is
minutes/temperature units, such as minutes/F°. See
Figure 18.
Output Status
(up to four stages)
20oF
On
Off
Time (Minutes)
2
4
6
8 10 12 14 16 18 20
Figure 18: Soft Start
Soft Start Example:
Temperature =
20°
Setpoint = 30°
Soft start = 2 minutes
Rate of Increase =
Soft start x (setpoint – sensor reading)
Controlled temperature increases by 1° every
two minutes, until the setpoint temperature is
reached. To go from 20° to 30° takes 20 minutes.
So Temperature Sensor Offset allows compensation
for temperature differences between actual and
displayed temperature, such as when using long
sensor leads. See Table 1 to determine the
temperature value to compensate for long sensor lead
extensions.
Un Temperature Units Used allows selection of
Fahrenheit or Celsius temperature scale.
PU Display Refresh Rate establishes the time delay
(seconds) between updates of the temperature
display.
Lc, Uc Heating Reset and Cooling Reset are
automatic shifts of the setpoint, based on the
temperature at the Auxiliary Temperature Sensor
(ATS). See Temperature Reset for more information.
NC Non-compensated Band establishes the
temperature range (F° or C°) over which reset does
not take place.
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
11
Alarm Management Functions
AH High Temperature Alarm establishes the
temperature relative to Setpoint (F° or C°) at which the
control goes into a high temperature alarm condition.
(The temperature value is added to the Setpoint.)
AL Low Temperature Alarm establishes the
temperature relative to Setpoint (F° or C°) at which the
control goes into a low temperature alarm condition.
(The temperature value is subtracted from the
Setpoint.)
AH, AL High and Low Temperature Alarms are
disabled during defrost and for 20 minutes after the
defrost cycle. These alarms are also disabled for
20 minutes after startup.
Ad Alarm Differential establishes the difference (F°
or C°) between the alarm activation temperature and
the alarm deactivation temperature.
Alarm Differential Example - Cooling Applications:
Setpoint = 40°F
High Temperature Alarm = 15F°
Alarm Differential = 2F°
When the room temperature exceeds 55°F
(40+15=55°F) for a time greater than the alarm
time delay setting, the alarm message is
displayed; however, it will reset after the
temperature drops below 53°F (40+15-2=53°F).
At Alarm Time Delay establishes the time delay
(minutes) between reaching a high or low temperature
alarm condition and displaying an alarm message on
the display. This function reduces alarm oscillation and
nuisance alarms caused by temperatures that
temporarily exceed alarm setpoint temperatures.
12
Binary Input Functions
iF Binary Input Mode allows selection of how the
Normally Closed (N.C.) binary input activates the
stage control contacts.
Binary Input Mode can be disabled or can provide one
of three predetermined responses to the binary input.
(If a set of stage control contacts are used to control
an external alarm, this function should be disabled.)
•
Shutoff and Alarm Signaling - If the binary input
contact is open for a time longer than that set
through the Binary Input Time Delay, the stage
control contacts are switched Off, and an alarm
message (A1) is displayed.
•
Setback - If the binary input contact is open for a
time longer than that set through the Binary Input
Time Delay, the setpoints are shifted by Setback.
Reverse setpoints (heating) decrease. Direct
setpoints (cooling) increase.
•
Remote Shutoff of the outputs. - If the binary
input contact is open for a time longer than that set
through the Binary Input Time Delay, the stage
control contacts are switched Off.
id Binary Input Time Delay establishes the time
delay (minutes) between the binary input signal
reaching the control and activation of the response
selected by Binary Input Mode.
Sb Setback determines the value of the Setpoint shift
when the binary input is open and Setback is the
response selected by Binary Input Mode.
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
Temperature Reset
The control module uses non-compensated band
and heating reset or cooling reset to automatically
adjust the setpoint. These functions appear only when
the Auxiliary Temperature Sensor (ATS) is connected.
If the ATS is connected after the control module is
powered up, the control module must be powered
down and then powered up for these functions to
appear.
Non-Compensated Band
Non-Compensated Band (NCB) is a temperature
differential from setpoint. Within the range of this
differential, variations in the ATS temperature do not
cause a temperature reset. See Heating Reset and
Cooling Reset for more information.
Note: When Deadband mode or Independent
Setpoint mode are used, NCB is the same for heating
stages and cooling stages.
Heating Reset
When (Setpoint – ATS Temperature) > NCB, the
control adjusts the heating setpoint by the following
amount:
[ATS Temp. – (Setpoint – NCB)] / Heating Reset
Heating reset only affects the setpoint for heating
stages.
Cooling Reset
When (ATS Temperature - Setpoint) > NCB, the
control adjusts the cooling setpoint by the following
amount:
[ATS – (Setpoint + NCB)] / Cooling Reset
Cooling reset only affects the setpoint for cooling
stages.
Cooling Setpoint = 70°F
Reset
ATS Temperature= 92°F
Example NCB = 10F°
Cooling Reset = 2F°
Step 1
ATS Temperature – (setpoint + NCB) / cooling
reset = [92 – (70 + 10)] / 2 = 6
Step 2
setpoint + reset
70 + 6 = 76
Setpoint is reset to 76°F to save energy. See
Figure 20.
Process
Temperature
Sensor
76°
70°
Setpoint
NonCompensated
Band
NCB = 10°
70°
Heating
Reset
Example
Setpoint = 70°F
ATS Temperature = 42°F
NCB = 20F°
Heating Reset = 2F°
Step 1
[ATS Temperature – (setpoint–NCB)] / heating
reset = [42 – (70 – 20)]/2 = -4
Step 2
setpoint + reset
70 + (-4) = 66
1°
Cooling
Reset
80°
92°
Auxiliary Temperature Sensor (ATS)
Figure 20: Cooling Reset
Setpoint is reset to 66°F to save energy. See
Figure 19.
1°
Heating
Reset
Process
Temperature
Sensor
Setpoint
70°
66°
NonCompensated
Band
NCB = 20°
42°
50°
70°
Auxiliary Temperature Sensor (ATS)
Figure 19: Heating Reset
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
13
Table 2: Function Settings in Order of Programming in Control Module
Display Code
Function
Useable Setting Range and Unit Value
Factory-Set
Values
4d = Direct
4r = Reverse
4b = Deadband
4i = Independent
setpoints
Modes of Operation
4d = Direct
4r = Reverse
4b = Deadband
4i = Independent setpoints
4d
SI (Mode 4i only)
Setpoint
4d, 4r, 4b = -40 to 99°F (-40 to 80°C)
4i = Low Setpoint Stop to High Setpoint Stop
—
HI
Differential 1
1 to 9F° (1 to 9C°)
5 (F°)
S2
∆ Setpoint 2
4d, 4r = 1 to 40F° (1 to 40C°)
4b = 2 to 40F° (2 to 40C°)
4i = Low Setpoint Stop to High Setpoint Stop
5 (F°)
H2
Differential 2
1 to 9F° (1 to 9C°)
5 (F°)
S3
∆ Setpoint 3
1 to 40F° (1 to 40C°)
5 (F°)
H3
Differential 3
1 to 9F° (1 to 9C°)
5 (F°)
S4
∆ Setpoint 4
1 to 40F° (1 to 40C°)
5 (F°)
H4
Differential 4
1 to 9F° (1 to 9C°)
5 (F°)
LL
Low Setpoint Stop
-40°F (-40°C) to High Setpoint Stop
32 (°F)
HL
High Setpoint Stop
Low Setpoint Stop to 99°F (80°C)
90 (°F)
Cc
Cycle Delay, Cooling
0 to 9 minutes
2 (minutes)
CH
Cycle Delay, Heating
0 to 9 minutes
0 (minutes)
rt
Soft Start
0 to 99 minutes/degrees
10
AH
High Temperature Alarm
0 to 50F° (0 to 50C°)
15 (F°)
AL
Low Temperature Alarm
-50 to 0F° (-50 to 0C°)
-15 (F°)
Ad
Alarm Differential
1 to 9F° (1 to 9C°)
5 (F°)
At
Alarm Time Delay
0 to 99 minutes
15 (minutes)
So
Temperature Sensor Offset
-20 to 20F° (-20 to 20C°)
0 (F°)
Un
Temperature Units Used
0 = °C
1 = °F
1 (°F)
PU
Display Refresh Rate
1 to 99 seconds
1 (second)
iF
Binary Input Mode
0 = No Response to Binary Input
1 = Shutoff and Alarm Signaling
2 = Setback Mode
3 = Remote Shutoff
0 (no response)
Sb
Setback
-20 to 20F° (-20 to 20C°)
10 (F°)
id
Binary Input Time Delay
0 to 99 minutes
0 (minutes)
iS
Interstage Time Delay
3 to 90 seconds
3 (seconds)
Lc
Heating Reset
0 to 6°/ °
4
Uc
Cooling Reset
0 to 6°/ °
4
NC
Non-Compensated Band
0 to 20F° (0 to 20C°)
8
Note:
Temperature Reset Functions (Heating Reset, Cooling Reset, Non-compensated Band) are only enabled after the
auxiliary sensor is installed and power is cycled.
14
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
Alarm and Fault Display Codes
These alarm and fault codes flash on the LED display
when the control detects the following faults:
Table 3: Alarm Display Codes (Flashing)
Display
Code
Meaning
System Status
F1
Indicates an open or shorted main temperature
sensor.
Alarm message displays. Correct problem and cycle
power to reset control.
A1
Binary input is open for longer than the Binary Input
Time Delay and Binary Input Mode Option 1 is
selected.
Control output is switched off; alarm message displays.
Correct the condition to reset.
OF
Binary input is open and Binary Input Mode
Option 3 selected.
Control output is switched off. Close the digital input to
reset.
HI
Main sensor temperature has reached or exceeded
the High Temperature Alarm value.
Alarm message displays. Correct the condition to reset.
LO
Main sensor temperature has reached or fallen
below the Low Temperature Alarm value.
Alarm message displays. Correct the condition to reset.
EE
Program failure
Alarm message displays, other outputs off. Replace
control.
Table 4: Status Codes (Steady)
Status Code
Indicates:
On
Auxiliary temperature sensor (S2) is not connected or, if it is connected, the sensor (or binary input) is
open or shorted.
OF
Binary input is closed.
Ordering Information
Table 5: Ordering Information
Item Code
Description
Shipping weight
MS4PMUHVT-11C
Relay pack temperature control with two A99B sensors
2.9 lb (1320 g)
MS4PM12C-11C
Replacement control module for use in relay pack only
1.6 lb (726 g)
RP4MSUHV-1C
Relay pack without control module
2.3 lb (1060 g)
A99BB-200C
Sensor, cable length: 6-1/2 ft (2 m)
0.13 lb (60 g)
Repair and Replacement
Relay Electrical Ratings
Field repair of the control should not be made. In case
of a defective or improperly functioning control, please
check with your nearest Johnson Controls/PENN
representative.
Relay Ratings in Table 6 are for ambient temperatures
in the range -40 to 111°F (-40 to 44°C). Derate
electrical ratings 3.45% per 1F° in the range
111 to 140°F. Derate electrical ratings 6.25% per 1C°
in the range 44 to 60°C.
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
15
Table 6: SPDT Relay Electrical Ratings
24 VAC
Single-Phase Ratings
120 VAC
208 VAC
240 VAC
Horsepower Rating
—
AC Full Load Amperes
—
7.2
7.6
8
AC Locked Rotor Amperes
—
43.2
45.6
48
1/3
3/4
1
Non-Inductive Amperes
—
8
8
8
Pilot Duty (VA)
50
325
625
750
Technical Specifications
Product
Electrical Ratings
Frequency
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack
See Table 6.
60 Hz
Power Requirements
120/240 VAC ±10%
Power Consumption
10 VA @ 120/240 VAC
Accuracy
±1.8F° (±1C°)
Sensor Input Range
-40 to 158°F (-40 to +70°C)
A99B Sensor Cable
6-1/2 ft (2 m)
Ambient Operating
Conditions
MS4PMUHVT-11C:
+14 to +140°F (-10 to +60°C); 0 to 95 % RH (noncondensing)
MS4PM12C-11C:
+14 to +140°F (-10 to +60°C); 0 to 95 % RH (noncondensing)
RP4MSUHV-1C:
-40 to +140°F (-10 to +60°C); 0 to 95 % RH (noncondensing)
Ambient Storage
Conditions
Dimensions (H x W x D)
Agency Listings
Emissions Compliance
Shipping Weight
MS4PMUHVT-11C:
-22 to +176°F (-30 to +80°C); 0 to 95 % RH (noncondensing)
MS4PM12C-11C:
-22 to +176°F (-30 to +80°C); 0 to 95 % RH (noncondensing)
RP4MSUHV-1C:
-40 to +185°F (-40 to +85°C); 0 to 95 % RH (noncondensing)
See Figures 3-5.
UL Listed (US), File SA516, CCN SDFY
UL Listed (Canada), File SA516, CCN SDFY7
FCC (US)
DOC (Canada)
See Table 5.
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult Johnson Controls/Penn Application Engineering at 1-800-275-5676. Johnson Controls, Inc. shall not be liable for
damages resulting from misapplication or misuse of its products.
Controls Group
507 E. Michigan Street
P.O. Box 423
Milwaukee, WI 53201
16
Published in U.S.A.
www.johnsoncontrols.com
MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin