Bulletin: 3050IM9102
January 15, 1992
Instruction Bulletin


ProductInterfacefor
LIFE-GARD Model-85A
TemperatureControllers
Class 3050 Type PIF-85
Bulletin No. 3050IM9102
January 15, 1991
TableofContents
Chapter 1 – Introduction
About this Manual ------------------------------------------------------------1-1
Notational Conventions ----------------------------------------------------1-1
Receiving -----------------------------------------------------------------------1-1
What is the Product Interface? ----------------------------------------------1-2
Chapter 2 – Specifications
Product Interface Hardware--------------------------------------------------2-1
Product Interface Specifications --------------------------------------------2-2
Chapter 3 – Installation
Mounting the Product Interface ---------------------------------------------3-1
Connecting the Product Interface to a Model 85A -----------------------3-2
Connecting to the PowerLogic Communications Link ------------------3-3
Biasing the Communications Link ---------------------------------------3-5
Terminating the Communications Link ----------------------------------3-7
Connecting Control Power ---------------------------------------------------3-9
Grounding the Product Interface Chasis -----------------------------------3-9
Chapter 4 – Setup and Operation
Resetting the Product Interface ----------------------------------------------4-1
Setting the Baud Rate ---------------------------------------------------------4-2
Setting the Communications Address --------------------------------------4-3
Setting the Transformer Type ------------------------------------------------4-4
Initial Startup ------------------------------------------------------------------4-5
Assigning a Label and Nameplate ------------------------------------------4-5
Chapter 5 – Maintenance and Troubleshooting
Maintenance -------------------------------------------------------------------5-1
Troubleshooting ---------------------------------------------------------------5-1
Appendix A – Register Listing -------------------------------------------A-1
Appendix B – Maximum Distances for Communications ------------B-1
Appendix C – Cable Pinouts ----------------------------------------------C-1
Figures and Tables
Table 1-1 Available Data -------------------------------------------------1-2
Figure 1-1 PIF85 and Other PowerLogic Devices Connected
Directly to a Personal Computer ----------------------------1-2
Figure 1-2 PIF85 and Other PowerLogic Devices Connected
to a PNIM for Access to the SY/NET Network -----------1-3
Figure 2-1 Product Interface Front View --------------------------------2-1
Figure 2-2 Product Interface Dimensions -------------------------------2-3
Figure 3-1 Panel Preparation ----------------------------------------------3-1
Figure 3-2 Connecting the Product Interface to a Model 85A --------3-2
…Continued On Next Page
 1991 Square D. All Rights Reserved
Page i
Table of Contents
Page ii
Figure
Figure
Figure
Figure
3-3
3-4
3-5
3-6
Figure
Figure
Figure
Figure
Table
Figure
Table
Table
Table
3-7
3-8
3-9
4-1
4-1
4-2
5-1
A-1
B-1
Multiple PowerLogic Device Types on a Comm Link ---3-3
RS-485 Communication Terminals -------------------------3-4
RS-485 Communication Wiring -----------------------------3-4
Connecting the Product Interface as the First Device
on a PowerLogic Communications Link ------------------3-5
RS-485 Terminator Placement -------------------------------3-7
Terminating the Product Interface---------------------------3-8
Control Power Connections ----------------------------------3-9
Product Interface Switches -----------------------------------4-1
Baud Rate Settings --------------------------------------------4-2
XFMR Type Switch Settings --------------------------------4-4
Troubleshooting Table ----------------------------------------5-2
Product Interface Register Listing --------------------------A-1
Maximum Distances for PowerLogic Communications -B-1
 1991 Square D All Rights Reserved
Listed 4L57
Ind. Cont. Eq.
COPYRIGHT NOTICE
TRADEMARK NOTICE
PLEASE NOTE:
FCC NOTICE
1992 by Square D Company All rights reserved. This Bulletin may not be copied in whole or in
part, or transferred to any other media, without the written permission of Square D Company.
SY/MAX, SY/NET, SY/LINK, MICROLOGIC, POWER-CAST and PowerLogic are registered
trademarks of Square D Company.
Electrical equipment should be serviced only by qualified electrical maintenance personnel, and this
Instruction Bulletin should not be viewed as sufficient instruction for those who are not otherwise
qualified to operate, service, or maintain the equipment discussed. Although reasonable care has
been taken to provide accurate and authoritative information in this bulletin, no responsibility is
assumed by Square D for any consequences arising out of the use of this material.
This equipment complies with the requirements in Part 15 of FCC rules for a Class
A computing device. Operation of this equipment in a residential area may cause
unacceptable interference to radio and TV reception requiring the operator to take
whatever steps are necessary to correct the interference.
Chapter 1
Introduction
Bulletin No. 3050IM9102
January 15, 1992
Chapter1–Introduction
ABOUT THIS MANUAL
Notational Conventions
RECEIVING
This manual provides the information necessary to install, setup, and operate the
PowerLogic Product Interface for Life-Gard Model 85A Transformer Temperature Controllers (PIF-85). The document is organized into five chapters, and three
appendices. The person(s) responsible for installing, applying, or operating the
Product Interface should read all of this document. To find information on a specific
topic, refer to the table of contents, or use the table below.
To
See
Read a general description of the Product Interface
Read about specifications and typical applications
Learn how to install the Product Interface
Learn how to setup the Product Interface
Learn how to troubleshoot problems
See a detailed listing of registers
Read about maximum distances for communications
See communication cable pinouts
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Appendix A
Appendix B
Appendix C
This document uses the following notational conventions:
•
Bulleted Lists. Bulleted lists, such as this one, provide information but not
procedural steps.
•
Numbered lists. Numbered lists show a sequence of steps describing a
specific task.
•
Cross References. Cross references to other sections in the document
appear in boldface and a different type face like this—See Chapter 3
Installation for more information.
If the Product Interface is shipped via UPS or air freight, inspect the shipping carton
for damage. If the Product Interface is to be installed soon, unpack and inspect it
for damage. If damage is evident, notify the carrier to initiate a claim. You can
obtain replacement equipment through your Square D distributor. For additional
assistance, contact PowerLogic Customer Service at (615) 459-8591.
 1991 Square D. All Rights Reserved
Page 1-1
Bulletin No. 3050IM9102
January 15, 1992
WHAT IS THE PRODUCT
INTERFACE?
Chapter 1
Introduction
The PowerLogic Product Interface for Life-gard Model 85A Temperature
Controllers brings remote transformer temperature monitoring to the PowerLogic
system. Any Square D PowerCast or conventional dry type transformer, equipped
with a Life-gard Model 85A Temperature Controller, can be monitored for
temperature and status. Table 1-1 lists the available data.
The Product Interface connects to the Model 85A Temperature Controller using
standard RS-422 communications. The Product Interface can be located up to 4,000
feet from the Model 85A.
Table 1-1 Available Data
Instantaneous Readings
• Temperature, Coil A
• Temperature, Coil B
The Product Interface provides standard RS-485 communications for connection
to a PowerLogic communications link. Multiple Product Interfaces and other
PowerLogic devices can be daisy-chained to a remote personal computer, as
illustrated by Figure 1-1, or to a PowerLogic Network Interface Module (PNIM)
for connection to a high speed network, as illustrated in Figure 1-2.
• Temperature, Coil C
• Temperature, Hottest Coil
Status
• Fan Mode (Auto/Manual)
• Fan Relay (On/Off)
• High Temp Alarm Relay
(Normal/Setpoint Exceeded)
• Emergency Shutdown Relay
(Normal/Setpoint Exceeded)
PIF3
PIF85
PIF85
CM
• Transformer Type
CB
Setpoints
• Fans On
CB
M85A
M85A
• Fans Off
• Alarm On
CB
• Alarm Off
• Shutdown
Page 1-2
Figure 1-1 PIF85 and other PowerLogic Devices Connected Directly to a
Personal Computer
 1991 Square D. All Rights Reserved
Chapter 1
Introduction
Bulletin No. 3050IM9102
January 15, 1992
System Display
for Micrologic CBs
PNIM
0
1
PIF3
PIF3
PIF85
CM
CB
CB
CB
CB
CB
CB
M85A
Figure 1-2 PIF85 and other PowerLogic Devices Connected to a PNIM for access to the SY/NET Network
 1991 Square D. All Rights Reserved
Page 1-3
Chapter 2
Specifications
Bulletin No. 3050IM9102
January 15, 1992
Chapter2–Specifications
PRODUCT INTERFACE
HARDWARE
The Product Interface is housed in a steel case designed to be mounted in power
equipment. The compact Product Interface mounts in low-voltage switchboards
and other small spaces. Figure 2-2 shows the overall dimensions.
The wiring connections for communications cables and control power are made to
removable terminal plugs on the front of the Product Interface. (See Figure 2-1). A
removable 5-position terminal plug is used to connect the Product Interface to a
PowerLogic communications link. A second removable 5-position terminal plug
provides an RS-422 connection to the Model 85A (only two terminal positions are
used). A removable 10-position plug is used to connect the Product Interface to 120
VAC control power (only three terminal positions are used) .
Three green LEDs are visible on the front of the Product Interface. One LED,
labeled DC OK, is lit when the Product Interface is receiving adequate control
power. A second LED, labeled RS-422 COMMS, flashes when communication
signals are flowing between the Model 85A Temperature Controller and the
Product Interface. The third LED, labeled RS-485 COMMS, flashes when communication signals are flowing on the PowerLogic communications link.
ADDRESS
Address Switches
0
8
RS-422 Terminals
for Connection
To Model 85
RS-422
TO M85
+
-
10
9
0
4
8
0
4
8
2
6
6
0
RS-485 Terminals for
Connection to PowerLogic
Communications Link
RS-485
DATA
COMMS
5
IN-
4
OUT+
3
OUT-
2
SHIELD
1
2
6
BAUD
4
8
IN+
11
2
6
8
7
2
6
4
XFMR
TYPE
12
Baud Rate Switch
13
Transformer Type Switch
14
Reset Switch
15
16
L
17
RESET
18
N
120 VAC
CONTROL
POWER
Control Power Connections
19
DC OK
20
GND
RS-422 COMMS
RS-485 COMMS
Indicating LEDs
Figure 2-1 Product Interface Front View
 1991 Square D. All Rights Reserved
Page 2-1
Bulletin No. 3050IM9102
January 15, 1992
Chapter 2
Specifications
Four ten-position rotary switches and one pushbutton switch are located on the
front of the Product Interface. Two ten position switches, labeled ADDRESS, are
used to set the Product Interface communications address. One ten-position switch,
labeled BAUD, is used to set the Product Interface’s RS-485 baud rate. One tenposition switch, labeled XFMR TYPE, is used to specify the type of transformer the
Model 85A Temperature Controller is monitoring. A push button switch, labeled
RESET, is used to activate a hardware reset.
Two mounting flanges, on the back of the Product Interface, are used to mount the
Product Interface to a flat surface. The right mounting flange has a ground terminal
used to connect the Product Interface chasis to a “true earth” ground.
PRODUCT INTERFACE
SPECIFICATIONS
Page 2-2
Communications ...............One RS-485 (PowerLogic), One RS-422 (Model 85A)
Clock/Calendar ......................................Accuracy +/- 1.5 sec in 24 hours at 25° C
Electrical
Control Power Input:
Nominal Voltage ...........................................................................120VAC
Operating Range .....................................................................90-132 VAC
Burden ..............................................................1A @ 120 VAC (132 VA)
Frequency .....................................................................................50/60 Hz
Isolation...............................................................................1500 V, 1 min.
Ride Through on Power loss ..........................................................................20 ms
Surge Suppression .....................................................................................35 Joules
DC OK LED .......................................................when lit, indicates DC Power OK
RS-422 COMMS LED ....................................flashes when RS-422 comms active
RS-485 COMMS LED ....................................flashes when RS-485 comms active
Environmental
Operating Temperature .....................................................................0 to 70° C
Storage Temperature ...................................................................-40 to +85° C
Humidity Rating ................................................95% RH max non-condensing
Weight ....................................................................................Approximately 3 lbs.
Dimensions .......................................................................................See Figure 2-2
 1991 Square D. All Rights Reserved
Chapter 2
Specifications
Bulletin No. 3050IM9102
January 15, 1992
5.66
143.8
4.25
108.0
ADDRESS
0
8
RS-422
TO M85
+
-
10
9
4
0
8
RS-485
DATA
COMMS
5
IN-
4
OUT+
3
OUT-
2
SHIELD
1
13
2
6
0
BAUD
4
2
6
12
4
8
IN+
11
2
6
6
4.63
117.6
0
8
8
7
2
6
4
XFMR
TYPE
14
15
16
L
17
RESET
18
N
120 VAC
CONTROL
POWER
19
DC OK
20
GND
RS-422 COMMS
RS-485 COMMS
Front View
Side View
Dimensions in Inches
Millimeters
Figure 2-2 Product Interface Dimensions
 1991 Square D. All Rights Reserved
Page 2-3
Chapter 3
Installation
Bulletin No. 3050IM9102
January 15, 1992
Chapter3–Installation
MOUNTING THE
PRODUCT INTERFACE
The Product Interface is designed to be mounted in power equipment. When
choosing a mounting location, consider the following points:
•
Mount the Product Interface no more than 4,000 feet from the Model 85A
Temperature Controller.
•
Mount the Product Interface in a location that allows access to the switches
and terminals on its front. See Figure 2-2 for Product Interface Dimensions.
•
Mount the Product Interface to allow for adequate heat dissipation. If
environmental conditions produce temperatures higher than the operating
range, (0° C to +70° C), make provisions to bring the ambient temperature
to 70° C or less.
The Product Interface enclosure is equipped with slotted mounting brackets that
accept four #8 round head mounting screws (not included). To mount the Product
Interface, complete the following steps:
1) To prepare the panel, drill four holes for #8 screws. Figure 3-1 shows the
drilling pattern.
2) Insert four #8 round head screws into the holes and torque to within 3/16"
of the panel.
3) Align the Product Interface’s mounting slots over the screw heads, then set
the Product Interface on the screws.
4) Torque the mounting screws until the Product Interface is secure.
Diameter 0.166
4.2
3.28
83.3
5.06
128.5
Dimensions in Inches/Millimeters
Figure 3-1 Panel Preparation
 1991 Square D. All Rights Reserved
Page 3-1
Bulletin No. 3050IM9102
January 15, 1992
Chapter 3
Installation
CONNECTING THE
PRODUT INTERFACE
TO A MODEL 85A
The Product Interface is connected to the Model 85A Temperature Controller using
a two wire communications cable, Belden 9408 or equivalent. Refer to Figure
3-2 when completing the following steps:
To connect the Product Interface to the Model 85A, complete the following steps:
1. Cut a piece of communications cable (Belden 9408 or equivalent) that is
long enough to reach from the Product Interface to the Model 85A (4,000
feet maximum).
2. Strip back the cable sheath 2 inches on both ends of the cable. Then strip
back the insulation for each wire 1/4 inch. Inspect the stripped ends for
stray wires to minimize the possibility of shorts across terminals.
3. Locate the ten position terminal strip on the rear of the Model 85A.
Terminals 1 and 2 are labeled REMOTE TEMP CONTROL.
4. Locate terminals 9 (-) and 10 (+), labeled RS-422 TO M85, on the front of
the Product Interface.
5. Connect terminal 1 on the rear of the Model 85A to terminal 9 (-) on the
Product Interface.
6. Connect terminal 2 on the rear of the Model 85A to terminal 10 (+) on the
Product Interface.
Belden 9408 or Equivalent
Back of Model 85A
ES RELAY
ALARM RELAY
Product Interface
+6V DC
N
N C
O O
M C
REMOTE
TEMP.
CONTROL
ADDRESS
10 9 8 7 6 5 4 3 2 1
Connect #2 to #10
0
8
N
N C
O O
M C
FAN RELAY
Connect #1 to #9
RS-422
TO M85
+
-
10
9
0
4
8
0
0
RS-485
DATA
COMMS
3
2
1
5
IN-
4
OUT+
3
OUT-
2
SHIELD
1
2
6
BAUD
4
8
IN+
13
2
6
12
4
8
6
11
2
6
8
7
2
6
4
XFMR
TYPE
14
15
16
RESET
18
20
RS-422 COMMS
Figure 3-2 Connecting the Product Interface to a Model 85A Temperature Controller
 1991 Square D. All Rights Reserved
N
120 VAC
CONTROL
POWER
19
DC OK
RS-485 COMMS
Page 3-2
L
17
GND
Chapter 3
Installation
CONNECTING TO THE
POWERLOGIC
COMMUNICATIONS LINK
Bulletin No. 3050IM9102
January 15, 1992
As in all other PowerLogic devices, the Product Interface uses an industry standard
RS-485 (RS-422 compatible) electrical interface for data communications. Multiple Product Interfaces, Circuit Monitors, and other PowerLogic devices can be
daisy-chained together on a single PowerLogic communications link. Figure
3-3 shows multiple device types on a communications link.
All PowerLogic devices have RS-485 communications terminals for connection to
a PowerLogic communications link. The Product Interface uses a removable, fiveposition terminal plug labeled “RS485 DATA COMMS” for this purpose. (See
Figure 3-4).
As in all other PowerLogic devices, the Product Interface requires a communication cable containing two shielded twisted pairs (Belden 8723 or equivalent).
Communication cables are daisy-chained from the Product Interface’s RS-485
communications terminals to the matching RS-485 communications terminals of
the next device. That is, SHLD is wired to SHLD, OUT- to OUT-, OUT+ to OUT+,
IN- to IN-, and IN+ to IN+.
If the Product Interface is the last device on the communications link, it must be
terminated using a Multipoint Communications Terminator (MCT-485). See
Terminating the Communications Link below for termination instructions. If the
Product Interface is the first device on the link, it must be connected to a
communications port using a Multipoint Communications Adapter (MCA-485).
See Biasing the Communications Link below for biasing instructions.
System Display
for Micrologic CBs
PNIM
0
1
CIM3F
PIF3
PIF3
PIF85
CB
CB
M85
CB
CB
CB
CB
CM
Figure 3-3 Multiple PowerLogic Device Types on a Communications Link
 1991 Square D. All Rights Reserved
Page 3-3
Bulletin No. 3050IM9102
January 15, 1992
Chapter 3
Installation
If the Product Interface is between the first and the last device on the PowerLogic
communications link, complete the following steps:
1. Strip back the cable sheath 2 inches on both ends of the communications
cable. Then strip back the insulation for each conductor 1/4 inch.
2. Inspect the stripped ends for stray wires to minimize the possibility of
shorts across terminals.
3. Connect one wire to the IN+ terminal on the Product Interface’s RS-485
5-position terminal block. Connect the other end of the same wire to the
IN+ terminal of the next device.
4. Repeat step 3, connecting the IN- terminal on the Product Interface to the
IN- terminal on the next device, the OUT+ terminal on the Product
Interface to the OUT+ terminal on the next device, and so on.
For example, to wire a Product Interface to a Circuit Monitor, connect the SHLD
terminal on the Product Interface to the SHLD terminal on the Circuit Monitor,
connect the OUT- terminal on the Product Interface to the OUT- terminal on the
Circuit Monitor, connect the OUT+ terminal on the Product Interface to the OUT+
terminal on the Circuit Monitor, and so on. Figure 3-5 illustrates this example.
ADDRESS
0
8
RS-422
TO M85
9
0
4
8
0
0
RS-485 Terminals for
Connection to PowerLogic
Communications Link
RS-485
DATA
COMMS
5
IN-
4
OUT+
3
OUT-
2
SHIELD
1
2
6
BAUD
4
8
IN+
13
2
6
12
4
8
6
11
2
6
8
7
2
6
10
+
-
4
XFMR
TYPE
14
15
16
L
17
RESET
18
N
120 VAC
CONTROL
POWER
19
DC OK
20
GND
Figure 3-4 RS-485 Communication Terminals
Belden 8723
or Equivalent
To Comms
Terminals of Next
Device
IN+
IN+
IN-
IN-
OUT+
OUT+
OUT-
OUT-
SHLD
SHLD
PIF-85 RS-485
Terminals
CM RS-485
Terminals
Figure 3-5 RS-485 Communication Wiring
Page 3-4
 1991 Square D. All Rights Reserved
To Comms
Terminals of Next
Device
Chapter 3
Installation
Bulletin No. 3050IM9102
January 15, 1992
Biasing the Communications To ensure reliable communications, the PowerLogic communications link must be
Link
biased. This is done using a biasing device called a Multipoint Communications
Adapter (MCA-485). The adapter is placed between the first device on the link and
the communications port of the PNIM or SY/LINK card. Figure 3-6 illustrates the
placement of the adapter when the first device on the link is a Product Interface. If
the first device on the link is not a Product Interface, refer to the first device’s
instruction bulletin for biasing instructions.
To connect the Product Interface as the first device on the PowerLogic communications link, you will need the following items:
•
One PowerLogic Multipoint Communications Adapter (3090 MCA-485).
(This is not included with the Product Interface and must be purchased
separately).
•
One PowerLogic cable 3090 CAB-107. (This is not included with the
Product Interface and must be purchased separately).
•
A five position terminal block—1 provided with each Product Interface.
•
Belden 8723 or equivalent cable. (Not included).
Figure 3-6 illustrates the wiring connections. Refer to this figure when completing
the steps listed below.
PRODUCT INTERFACE
Belden 8723
IN+
INOUT+
OUTSHLD
Terminal
Block
20
IN+
21
IN-
22
OUT+
23
OUT-
24
SHLD
CAB-107
MCA-485
To Comm port of PNIM
or SY/LINK Card
PIF-85 RS-485
Terminals
Figure 3-6 Connecting the Product Interface as the First Device on a PowerLogic Communications Link
To connect the Product Interface as the first device on the PowerLogic communications link, complete the following steps:
1. Install the terminal block in a convenient location.
The CAB-107 is a ten foot cable. If the terminal block must be located
farther than ten feet from the PNIM or PC, a custom cable must be built.
To build a custom cable, use Belden 8723 cable and a male DB9 connector.
Appendix C shows the required pinout for the CAB-107 cable.
 1991 Square D. All Rights Reserved
Page 3-5
Bulletin No. 3050IM9102
January 15, 1992
Chapter 3
Installation
2. Plug the Male end of the Multipoint Communications Adapter (MCA-485)
into the communications port of the PNIM or SY/LINK board.
NOTE: When connecting to a PNIM, connect the Product Interface to the
top RS-422 port, labeled port 0. This port must be configured for PowerLogic
mode.
3. Mark the flying leads on the CAB-107 as indicated in the table below. For
example, mark the white wire, labeled 20, as “IN+”; mark the green wire,
labeled 21, as “IN-”; and so on.
Existing Label
Wire Color
Mark As
20
Green
IN+
21
White
IN-
22
Red
OUT+
23
Black
OUT-
24
Silver
SHLD
4. Attach the Male DB-9 connector on the CAB-107 to the Multipoint
Communications Adapter.
5. Connect the CAB-107 spade connectors to the terminal block.
6. Cut a length of Belden 8723 (or equivalent) cable that is long enough to
reach from the terminal block to the Product Interface. Strip the cable
sheath from both ends and expose 1/4" of each conductor.
7. Connect one end of the Belden 8723 (or equivalent) cable to the terminal
block.
8. Connect the other end of the Belden 8723 (or equivalent) cable to the
removable 5-position terminal plug, labeled RS-485 Data Comms, on the
Product Interface. Be sure to connect the terminal accepting the IN- wire
on the CAB-107 to the IN- terminal on the Product Interface, the terminal
accepting the IN+ wire on the CAB-107 to the IN+ terminal on the Product
Interface, and so on.
NOTE
An alternative to using a terminal block and a CAB-107 is to build a
custom cable using Belden 8723 cable (or equivalent) and a male
DB-9 connector. When building the cable, follow the CAB-107
pinout shown in Appendix C.
Page 3-6
 1991 Square D. All Rights Reserved
Chapter 3
Installation
Bulletin No. 3050IM9102
January 15, 1992
Terminating the
Communications Link
To ensure reliable communications, the last device on a PowerLogic communications link must be terminated. Figure 3-7 illustrates terminator placement when the
last device on the link is a Product Interface for Model 85A Temperature Controllers. If the last device is not a Product Interface, refer to the last device’s instruction
bulletin for termination instructions.
NOTE
If a communications link contains only a single device, it must be
terminated. If a link contains multiple devices, as in Figure 3-8, only
the last device must be terminated.
To connect the Product Interface as the last device on the PowerLogic communications link, you’ll need the following items:
•
One PowerLogic RS-485 Multipoint Communications Terminator (3090
MCT-485). (This is not included with the Product Interface and must be
purchased separately).
•
A five position terminal block—1 provided with each Product Interface.
•
Belden 8723 or equivalent cable. (Not included).
Figure 3-8 illustrates proper termination. Refer to this figure when completing the
steps listed below.
System Display
for Micrologic CBs
PNIM
The Communications Link Must
Be Terminated at the Last Device
0
1
PIF85
PIF3
PIF3
CM
M85A
CB
CB
CB
CB
CB
CB
Figure 3-7 RS-485 Terminator Placement
 1991 Square D. All Rights Reserved
Page 3-7
Bulletin No. 3050IM9102
January 15, 1992
Chapter 3
Installation
To connect the Product Interface as the last device on the PowerLogic communications link, complete the following steps:
1. Install the terminal block in a convenient location.
2. Cut a length of cable long enough to reach from the Product Interface to the
terminal block.
3. Strip the cable sheath from both cable ends and expose 1/4" of each
conductor.
4. Connect one end of the cable to the IN+, IN-, OUT+, OUT-, and SHLD
terminals on the Product Interface.
5. Trace the conductor color codes and mark the cable conductors at the other
end of the cable as IN+, IN-, OUT+, OUT-, and SHLD, corresponding to
the RS485 COMMS terminals on the Product Interface.
6. Connect the marked conductors to the terminal block.
7. Connect the four spade connectors on the Multipoint Communications
Terminator to the OUT-, OUT+, IN-, and IN+ positions on the terminal
block.
Product Interface
(Last Device on Link)
Terminator
Terminal
Block
Belden 8723 Cable
IN+
IN-
OUT+
OUTSHLD
RS-485
Terminals
IN+
INOUT+
OUTSHLD
Figure 3-8 Connecting the RS-485 Terminator to a Product Interface
Page 3-8
 1991 Square D. All Rights Reserved
Chapter 3
Installation
CONNECTING CONTROL
POWER
Bulletin No. 3050IM9102
January 15, 1992
IMPORTANT: In all wiring installations, wire the Product Interface according to
all applicable electrical codes.
The Product Interface requires 90-132 VAC control power at 50/60 Hz. Control
power connections are made to terminal positions 16, 18, and 20 on the front of the
Product Interface. (See Figure 3-9). Connect the power cable to the Line (L),
Neutral (N), and Ground (G) terminals as marked on the Product Interface. Use a
properly sized disconnect switch as a means to remove control power from the
Product Interface.
GROUNDING THE
PRODUCT INTERFACE
CHASSIS
The chassis ground terminal is located on the right mounting flange of the Product
Interface. Connect the chassis ground terminal to a building column or grounding
electrode determined to be a “true earth” ground. Ground wire should be #14 gauge
minimum.
ADDRESS
0
8
RS-422
TO M85
+
-
10
9
0
4
8
0
0
RS-485
DATA
COMMS
5
IN-
4
OUT+
3
OUT-
2
SHIELD
1
2
6
BAUD
4
8
IN+
13
2
6
12
4
8
6
11
2
6
8
7
2
6
4
XFMR
TYPE
Control Power
Disconnect
14
15
16
L
17
RESET
18
N
120 VAC
CONTROL
POWER
L
N
120 VAC
19
DC OK
20
GND
G
RS-422 COMMS
RS-485 COMMS
Figure 3-9 Control Power Connections
 1991 Square D. All Rights Reserved
Page 3-9
Chapter 4
Setup and Operation
Bulletin No. 3050IM9102
January 15, 1992
Chapter4–SetupandOperation
The Product Interface has five switches on its faceplate. These switches are used
to set its baud rate, set its communications address, specify the transformer type,
and reset the Product Interface. Figure 4-1 shows the switch locations. This chapter
describes the purpose and use of each switch. A label on the side of the Product
Interface also shows the switch locations and their functions.
RESETTING THE
PRODUCT INTERFACE
The Product Interface must be reset each time a change is made to the address, baud
rate, or transformer type switch settings. There are two ways to reset the Product
Interface: Hardware Reset, and Software (remote) Reset.
To perform a hardware reset, press the Reset button located on the front of the
Product Interface. (See Figure 4-1). For instructions on performing a software reset
using PowerLogic software, refer to the instruction bulletin accompanying the
software.
NOTE
Reset the Product Interface after changing a switch setting. If you
change a switch setting and do not press the Reset button, the
Product Interface will not use the new switch setting.
ADDRESS
Address Switches
0
8
RS-422
TO M85
+
-
10
9
0
4
8
0
4
8
2
6
6
0
RS-485
DATA
COMMS
5
IN-
4
OUT+
3
OUT-
2
SHIELD
1
2
6
BAUD
4
8
IN+
11
2
6
8
7
2
6
4
XFMR
TYPE
12
Baud Rate Switch
13
Transformer Type Switch
14
Reset Switch
15
16
L
17
RESET
18
N
120 VAC
CONTROL
POWER
19
DC OK
20
GND
RS-422 COMMS
RS-485 COMMS
Figure 4-1 Product Interface Switches
 1991 Square D. All Rights Reserved
Page 4-1
Bulletin No. 3050IM9102
January 15, 1992
SETTING THE
BAUD RATE
Chapter 4
Setup and Operation
The Product Interface baud rate must be set to match the baud rate of the other
device(s) on the PowerLogic communications link. All devices on the PowerLogic
communications link must be set to the same baud rate. For example, if two Circuit
Monitors and one Product Interface are daisy-chained to a PNIM, both Circuit
Monitors, the Product Interface, and the PNIM port must be set to the same baud
rate.
The baud rate switch is located on the front of the Product Interface. (See Figure
4-1). The baud rate switch settings are clearly identified on a label on the side of
the Product Interface. Table 4-1 repeats the baud rate switch settings.
To set the baud rate, complete the following steps:
1. Insert a miniature, flat-bladed screwdriver into the arrow in the center of
the baud rate switch.
2. Rotate the switch until the arrow points to the number that corresponds to
the desired baud rate. For example, to select 19200 baud, rotate the arrow
to switch position 5.
3. Press the Reset button. This forces the Product Interface to use the new
baud rate setting.
NOTE: The Product Interface can also be reset by issuing a reset command
using PowerLogic application software. For instructions on performing a
software reset using PowerLogic software, refer to the instruction bulletin
accompanying the software.
Position
Baud Rate
1
1200
2
2400
3
4800
4
9600
5
19200
6-0
Reserved
Table 4-1 Baud Rate Settings
Page 4-2
 1991 Square D. All Rights Reserved
Chapter 4
Setup and Operation
SETTING THE
COMMUNICATIONS
ADDRESS
Bulletin No. 3050IM9102
January 15, 1992
Any single PowerLogic communications link can support up to 32 individual
device addresses. For example, a single PowerLogic communications link could
have 30 Circuit Monitors and 2 Product Interfaces. Because multiple devices can
share a single communications link, each device on the communications link must
be assigned a unique communications address. The communications address is
used by PowerLogic software and hardware products to locate a specific device on
the link.
Each Product Interface on a communications link must be assigned a communications address in the range 1-32. When choosing an address for a Product Interface,
consider the following points:
•
Each device on the communications link must be assigned a unique
address. For example, a Circuit Monitor and a Product Interface must not
be assigned the same address.
•
Each PowerLogic communications link must have one device whose
address is “01.”
-
If a communications link contains several daisy-chained Product
Interfaces (and no other PowerLogic devices), one Product Interface must be assigned the address “01.”
-
If a communications link contains only one PowerLogic device, a
Product Interface, its address must be “01.”
The Product Interface’s communications address is set using two ten position
rotary switches located on the front of the Product Interface. (See Figure 4-1). The
lower address switch sets the ones digit. The higher address switch sets the tens
digit. To set the address, complete the following steps:
1. Insert a miniature, flat-bladed screwdriver into the arrow in the center of
the ones switch.
2. Rotate the switch until the arrow points to the desired number.
3. Insert a miniature, flat-bladed screwdriver into the arrow in the center of
the tens switch.
4. Rotate the tens switch until the arrow points to the desired number.
5. Press the Reset button. This forces the Product Interface to use the new
address switch setting.
NOTE: The Product Interface can also be reset by issuing a reset command
using PowerLogic application software. For instructions on performing a
software reset using PowerLogic software, refer to the instruction bulletin
accompanying the software.
 1991 Square D. All Rights Reserved
Page 4-3
Bulletin No. 3050IM9102
January 15, 1992
SETTING THE
TRANSFORMER TYPE
Chapter 4
Setup and Operation
The XFMR TYPE switch, located on the front of the Product Interface, is used to
specify the type of transformer being monitored. A label on the side of the Product
Interface shows the switch position that corresponds to each transformer type.
Table 4-2 repeats this information.
To set the transformer type switch, complete the following steps:
1. Insert a miniature, flat-bladed screwdriver into the arrow in the center of
the XFMR TYPE switch.
2. Rotate the switch until the arrow points to the number that corresponds to
the correct transformer type. (See Table 4-2).
3. Press the Reset button. This forces the Product Interface to recognize the
new switch setting.
Note: The Product Interface can also be reset by issuing a reset command
using PowerLogic application software. For instructions on performing a
software reset using PowerLogic software, refer to the instruction bulletin
accompanying the software.
NOTE
Double-check the XFMR Type switch setting. The switch must be
set to match the type of transformer being monitored, for the
Product Interface to operate properly.
SWITCH
POSITION
XFMR TYPE
TEMP RISE
(C)
0
Dry-Type
80
1
Dry-Type
115
2
3
Dry-Type
Power-Cast
150
80
4
5-9
Power-Cast
Reserved
115
N/A
Table 4-2 XFMR Type Switch Settings
Page 4-4
 1991 Square D. All Rights Reserved
Chapter 4
Setup and Operation
INITIAL START-UP
Bulletin No. 3050IM9102
January 15, 1992
Before starting the Product Interface, review Chapter 3 and Chapter 4. Verify that
all external wiring is connected according to color codes. Inspect for stray wires and
short conditions. Check the baud rate and address settings. Be sure that the Product
Interface baud rate matches the baud rate of all other devices on the PowerLogic
communications link. Verify that the address of the Product Interface is unique.
Verify that the XFMR TYPE switch is in the correct position.
After verifying proper installation and setup, apply control power to the Product
Interface. The “DC OK” LED on the front of the enclosure should light indicating
that the Product Interface is receiving adequate power. If the green LED does not
light, re-check the control power wiring. Be sure that the Product Interface is
receiving 120 VAC power. Refer to Chapter 5 - Maintenance and Troubleshooting for troubleshooting tips.
ASSIGNING A LABEL
AND NAMEPLATE
The Product Interface provides two user-definable parameters called the label and
nameplate. The label is a four character alpha-numeric string. The PowerLogic
Product Communications Software and other PowerLogic products display the
label to help identify the device being viewed. The default label is “XFMR.”
The nameplate is a 16 character alpha-numeric string. The PowerLogic Product
Communications Software and other PowerLogic products display the nameplate
to help identify the device being viewed. For example, a typical nameplate might
be “USS1 XMFR TEMP” indicating that the data being viewed is from the
transformer in Unit Substation 1. The default nameplate is “Transformer Temp.”
The label and nameplate are set using PowerLogic application software. Refer to
the software instruction bulletin for instructions on setting these values.
 1991 Square D. All Rights Reserved
Page 4-5
Chapter 5
Maintenance and Troubleshooting
Chapter5–MaintenanceandT
roubleshooting
!
Bulletin No. 3050IM9102
January 15, 1992
WARNING
HAZARD OF ELECTRICAL SHOCK.
All maintenance must be performed by qualified service personnel.
Disconnect control power before attempting to service the device.
Failure to observe this precaution could result
in severe personal injury or death!
MAINTENANCE
TROUBLESHOOTING
The Product Interface is designed for maximum reliability in industrial environments and should require no maintenance when installed and used properly. If a
problem arises, refer to the troubleshooting table below. If the problem persists,
contact a qualified Square D service representative. Do not attempt to disassemble
the Product Interface. Only qualified service personnel should be allowed to
service the Product Interface.
Most problems occur due to improper installation or setup. It may be helpful to
review Chapters 3 and 4 before starting troubleshooting. Table 5-1 offers a list of
potential problems and their likely causes, along with checks and/or solutions for
each. If after completing the Troubleshooting checks in Table 5-1, the problem has
not been solved, contact your local Square D distributor, or contact PowerLogic
customer service at (615) 459-8591.
 1991 Square D. All Rights Reserved
Page 5-1
Bulletin No. 3050IM9102
January 15, 1992
Chapter 5
Maintenance and Troubleshooting
Table 5-1 Troubleshooting Table
Problem
Possible Cause(s)
Check or Cure
Control power is applied, but DC OK
LED on front of the Product
Interface does not light.
Control power connection faulty.
Check control power circuit and connections.
Can't communicate to the Product
Interface at all.
Product Interface is addressed
incorrectly.
Verify that the address switches are set to a
unique address. Check for address duplication
on the communications link. See “Setting the
Communications Address” in Chapter 4 for
instructions on addressing.
Product Interface Baud Rate is
set wrong.
Reset the Product Interface to the correct baud
rate. See “Setting the Baud Rate” in Chapter 4
for instructions.
Last device on the
communications link is not
terminated using the Multipoint
Communications Terminator.
Check the last device on the link for proper
termination. See “Terminating the
Communications Link” in Chapter 3 for
instructions.
Communications link is not
biased using the Multipoint
Communications Adapter.
Check to see that the Multipoint
Communications Adapter is used and properly
placed. See “Biasing the Communications Link”
in Chapter 3.
Break in RS-485 communications
link.
Check all wiring connections on RS-485 link.
Custom cable built incorrectly.
If a custom cable was built, verify that the proper
pinouts were used.
Last device on the
communications link is not
terminated using the Multipoint
Communications Terminator.
Check the last device on the link for proper
termination. See “Terminating the
Communications Link” in Chapter 3 for
instructions.
Communications link is not
biased using the Multipoint
Communications Adapter.
Check to see that the Multipoint
Communications Adapter is used and properly
placed. See “Biasing the Communications Link”
in Chapter 3.
Can communicate to the Product
Interface some of the time, but not
all of the time.
Page 5-2
 1991 Square D. All Rights Reserved
Appendix A
Register Listing
Bulletin No. 3050IM9102
January 15, 1992
Appendix A –RegisterListing
PIF Reg
PIF Reg
CM Reg
R/W
Each Product Interface has an identical set of storage registers. Table A-1 provides
a listing
of the registers. The table has three column
headings: PIF Reg, R/W, and
R/W
Save
Description
Description
Description. The column headings are described below.
COLUMN HEADINGS
PIF Reg -
This column shows the Product Interface register number.
R/W -
An R is shown in this column if the register can only be read, but
not written. If the register can be read and written, R/W is shown
in this column.
Description - This column provides a description of the register contents.
IMPORTANT NOTES
•
None of the R/W registers are saved when power to the Product Interface is lost.
•
All non-supported registers return a value of zero when read. A write to these
registers does nothing.
•
Product Interface register 237 is a command register that allows the user to reset
the Product Interface by writing to the register with bit 5 set to 1. (This is
equivalent to writing a decimal 16). This performs the same function as
pressing the Reset button on the front of the Product Interface.
Table A-1 Product Interface Register Listing
PIF Reg
PIF Reg
CM Reg
R/W
87
R
R/W
Description
Save
Description
Product Interface Address Switch Position. This register returns the Product Interface
Address switch position (as a decimal value). Any time the positions of the Address
switches are changed, the Product Interface must be reset. If the address switches were
changed but the PIF were not reset, this register would return the new switch settings, but
the PIF would still respond to the old address.
Product Interface Communications Statistics (Registers 133-141):
133
R
Number of messages received by the addressed Product Interface.
134
R
Number of messages sent by the addressed Product Interface to other devices.
135
R
Number of messages received by the addressed Product Interface with invalid addresses.
136
R
Number of messages received by the addressed Product Interface with bad checksums.
137
R
Number of messages received by the addressed Product Interface with unclassified
errors.
138
R
Number of messages received by the addressed Product Interface with illegal opcodes.
139
R
Number of messages received by the addressed Product Interface with illegal registers.
140
R
Number of messages received by the addressed Product Interface with illegal counts.
141
R
Number of messages received by the addressed Product Interface with frame errors.
 1991 Square D. All Rights Reserved
Page A-1
Bulletin No. 3050IM9102
January 15, 1992
Appendix A
Register Listing
Table A-1 Product Interface Register Listing (Continued)
PIF Reg
PIF Reg
CM Reg
R/W
143
R
218 - 219
R/W
User defined label. This is a user-defined, four-character alphanumeric string that helps
identify the transformer whose data is being viewed. The default label is “XFMR”.
220 - 227
R/W
User defined nameplate. This is a user-defined, sixteen-character alphanumeric string
that helps identify the transformer whose data is being viewed. For example, the transformer on Unit Substation 1 might be assigned the label “XFMR USS1”. The default
nameplate is “Transformer Temp”.
228 - 230
R/W
Set Date/Time. User defined. Writing to these registers sets the Product Interface date
and time. From that point on, the Product Interface advances the date and time based on
its internal clock. Upon initial power up, the date is set to 1-1-1900 and the time to
00:00:00. Writing to registers 228-230 causes the date/time to be automatically mapped
into registers 784-789. Likewise, writing to registers 784-789 will cause the date/time to
be automatically written to registers 228-230.
The date/time is stored in the following format:
228
Month (byte 1)
Range = 1 - 12
Day (byte 2)
Range = 1 - 31
229
Year (byte 1)
Range = 1 - 199
Hour (byte 2)
Range = 0 - 23
230
Minutes (byte 1)
Range = 0 - 59
Seconds (byte 2)
Range = 0 - 59
(Year is zeroed on 1900. e.g. 1989 is represented as 89. 2009 is represented as 109).
231
R
Revision Level of Product Interface Software. This register stores the firmware release
and revision numbers.
Bits 1 - 4 represent the communications processor revision number.
Bits 5 - 8 represent the communications processor release number.
Bits 9 - 16 are reserved.
237
R/W
Page A-2
R/W
Description
Save
Description
Product Interface Microprocessor Status
Bit 1 = 1 - At least one other bit is set to “1”
Bit 2 = 1 - Reserved
Bit 3 = 1 - Reserved
Bit 4 = 1 - On Board RAM error occured during self test
Bit 5 = 1 - Off Board RAM error occured during self test
Bit 6 = 1 - Reserved
Bit 7 = 1 - EPROM checksum error was detected during self test
Bit 8 = 1 - Interrupt error during self test
Bit 9 = 1 - Excessive communication errors (reg# 133 - 141)
Bits 10 - 16 are reserved.
Command Register (Reset Function). Writing to this register with bit 5 set to 1 (this is
equivalent to writing a decimal 16) resets the Product Interface. This performs the same
function as pressing the Reset button on the front of the Product Interface. A read from
this register returns zero.
Bits 1 - 4 are reserved.
Bit 5 = 1 - Software restart.
Bits 6 - 16 are reserved.
 1991 Square D. All Rights Reserved
Appendix A
Register Listing
Bulletin No. 3050IM9102
January 15, 1992
Table A-1 Product Interface Register Listing (Continued)
PIF Reg
PIF Reg
CM Reg
R/W
242
R
243-255
R/W
Description
Save
Description
Square D Company Product ID Number. This register stores the number that identifies
the device as a Product Interface for Model 85 Temperature Controllers. A read from this
register returns the ID number 474.
Utility Registers for User Assignment: These registers are provided for the benefit of
the user. They can be used to develop customized operations within the software.
784-789
R/W
8172 - 8192
R
Set Date/Time: By writing to these three registers together, the date and time are set in
the Product Interface. From that point on, the Product Interface advances the date and
time based on its internal clock. Upon initial power up, the date is set to 1-1-1900 and the
time to 00:00:00. The date and time are mapped from registers 228-230. Writing to
registers 228-230 will cause the date/time to be automatically mapped into registers 784789. Likewise, writing to registers 784-789 will cause the date/time to be automatically
written to registers 228-230. The date and time are stored in the following format:
784
Seconds
Range = 0 - 59
785
Minutes
Range = 0 - 59
786
Hours
Range = 0- 23
787
Days
Range = 1 - 31
788
Month
Range = 1 - 12
789
Year
Range = 0 - 199
(Year is zeroed on 1900. e.g. 1989 is represented as 89, and 2009 is represented as 09).
SY/MAX compatibility registers. Used to support the Product Interface functions
necessary to maintain SY/MAX compatibility. These Registers are read only, but some
may be altered as a result of system operation. NOTE: Register 8188 reports “474” to
identify the Product Interface for MICROLOGIC Circuit Breakers.
NOTE: Registers 7000 - 7008 are used to provide PIF-85 register assignments for data unique to the
Model 85 Temperature Controller.
7000
R
Hottest Present Coil Temperature. Highest present value among registers 7001, 7002,
and 7003.
7001
R
Present temperature, Coil 1.
7002
R
Present temperature, Coil 2.
7003
R
Present temperature, Coil 3.
 1991 Square D. All Rights Reserved
Page A-3
Bulletin No. 3050IM9102
January 15, 1992
Appendix A
Register Listing
Table A-1 Product Interface Register Listing (Continued)
PIF Reg
PIF Reg
CM Reg
R/W
7004
R
R/W
Description
Save
Description
Present Switch Status in the Model 85 Temperature Control unit. This register shows
the status of the switches on the Model 85 Temperature Controller. (The Product Interface switch status is stored in register 7005). Bit map follows:
Bit 1 - Fan Switch Status: 0 = off, 1 = Cooling Fan(s) Running.
Bit 2 - Alarm Silence Switch: 0 = off, 1 = pushed. In the Model 85, the the alarm is
silenced by pushing this switch.
Bit 3 - Clear Interval Max Switch: 0 = off, 1 = pushed: When the READ/RESET and
the READ MEMORY buttons on the Model 85 are pushed simultaneously, the
memory storing the highest temperature since the last reset is cleared. (The
interval is the lapsed time since the last reset).
Bit 4 - Fan Mode: 0 = auto, 1 = manual: On the Model 85 Temperature Controller, the
Fan Mode switch toggles between manual and automatic modes.
Bits 5 through 15 are reserved.
7005
R
Product Interface XFMR Type Select Switch Position. This register stores the position
of the XFMR Type select switch. Any time the position of the XFMR Type switch is
changed, the Product Interface must be reset. If the XFMR Type switch were changed,
but the Product Interface were not reset, this register would return the new switch position, but the Product Interface would still think it was in the old switch position. The table
below shows the values that correspond to each transformer type.
Switch Position
0
1
2
Decimal Value Returned
By This Register
0
1
2
XFMR Type
Dry-Type 80' C-Rise
Dry-Type 115' C-Rise
Dry-Type 150' C-Rise
3
4
4
8
Power-Cast 80' C-Rise
Power-Cast 115' C-Rise
NOTE: Registers 7006 - 7010 reflect the Model 85A program setpoints based on the XFMR Type. If the
XFMR Type switch on the Product Interface is set to the wrong position, these values will not match the
actual setpoint values used by the Model 85A.
7006
R
System Transformer Temperature Set Point, Fans On
7007
R
System Transformer Temperature Set Point, Fans Off
7008
R
System Transformer Temperature Set Point, Alarm On
7009
R
System Transformer Temperature Set Point, Alarm Off
7010
R
System Transformer Temperature Set Point, Shutdown
Page A-4
 1991 Square D. All Rights Reserved
Appendix A
Register Listing
Bulletin No. 3050IM9102
January 15, 1992
Table A-1 Product Interface Register Listing (Continued)
PIF Reg
PIF Reg
CM Reg
R/W
7011
R
Present Status, Model 85 Temperature Controller. Bit map follows:
Bit 1 = 1 - Fan on, Fan Mode Switch pushed to manual
Bit 2 = 1 - Fan on, Temperature Set Point exceeded
Bit 3 = 1 - Alarm on, Temperature Set Point exceeded
Bit 4 = 1 - Emergency Shutdown Temperature exceeded
Bit 5 = 1 - Open probe, coil 1
Bit 6 = 1 - Open probe, coil 2
Bit 7 = 1 - Open probe, coil 3
Bit 8 = 1 - Shorted probe, coi1 l
Bit 9 = 1 - Shorted probe, coil 2
Bit 10 = 1 - Shorted probe, coil 3
Bits 11 through 16 are reserved
7012
R
Self Test Result Register This register contains self test results of serial communications. It is formatted the same as register 143 with the addition of the DUART (Dual
Universal Asymmetrical Receive/Transmit) local loopback test, performed after power up
7013
R
Model 85 Communications Status. This register stores the time (in seconds) since the
Product Interface last received good data from the Model 85. In other words, a non-zero
value indicates that communications to the addressed trip unit are currently bad. A value
of 0 indicates that communications are good.
7014-7016
7017
R/W
Description
Save
Description
Reserved
R
Baud Rate Switch Position. This register returns the Product Interface’s baud rate
switch position. Any time the position of the baud rate switch is changed, the Product
Interface must be reset. If the baud rate switch were changed but the PIF were not reset,
this register would return the new switch position, but the PIF would still operate at the old
baud rate. If an invalid or reserved switch setting is chosen, the Product Interface defaults
to 9600 baud. The table below shows the switch positions and their corresponding baud
rates.
Switch Position
Decimal Value Returned
By This Register
Baud Rate
1
1
1200
2
2
2400
3
3
4800
4
5
4
5
9600
19200
 1991 Square D. All Rights Reserved
Page A-5
Appendix B
Maximum Distances
AppendixB–MaximumDistancesforComms
Bulletin No. 3050IM9102
January 15, 1992
All PowerLogic devices are equipped with RS-485 communications. This RS-485
standard allows up to 32 devices to be daisy-chained to a single communications
port. For example, up to 32 Circuit Monitors can be connected to the top RS-422
communications port of a PowerLogic Network Interface Module (PNIM). When
1 to 16 PowerLogic devices are connected to a single communications port, the
maximum length of the communications link, that is the distance from the
communications port to the last PowerLogic device on the chain, is 10,000 feet.
When more than 16 PowerLogic devices are connected to a single communications
port, the maximum length of the communications link changes in relation to the
baud rate. This is necessary to insure accurate communications at high rates of
speed (up to 19,200 baud). The table below shows the maximum distances
recommended at varying baud rates.
Table B-1 Maximum Distances for PowerLogic Communications
Maximum Distances in Feet
Number of Devices
Baud Rate
16
17-32
1200
10,000'
10,000'
2400
10,000'
5,000'
4800
10,000'
5,000'
9600
10,000'
4,000'
19200
10,000'
2,500'
 1991 Square D. All Rights Reserved
Page B-1
Appendix C
Communication Cable Pinouts
AppendixC–CommunicationCablePinouts
Bulletin No. 3050IM9102
January 15, 1992
CAB-107
Product Interface
Terminal
IN(#4)
White
IN+ (#5)
Green
OUT- (#2)
Black
OUT+ (#3)
Red
(#1)
Shield
 1991 Square D. All Rights Reserved
1
2
3
4
5
6
7
8
9
Page C-1