Eaton PM3 Manual

Contents
Description Page
1. Installation and Specifications ..............................................................................................................2
2. Indicators ..............................................................................................................................................9
3. Modbus RTU Communications ......................................................................................................... 10
4. Configuration and Input ...................................................................................................................... 11
5. Modbus Registers .............................................................................................................................. 12
Appendix A ......................................................................................................................................... 17
Effective March 2013
Instruction Leaflet IL012002EN
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors

2
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
1. Installation and Specifications
CAUTION
DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON
EQUIPMENT WHILE IT IS ENERGIZED. DEATH OR SEVERE PERSONAL
INJURY CAN RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT.
ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING.
Figure 1. Attaching the Endcap.
Table 1. End Cap Kits.
Breaker Frame End Cap Kit Cat # End Cap Kit Style #
FD KPEKM1 6606C63G04
FD KPEK1 67B9101G03
JG FJ3RTWK 68C2837G09
JG FJ3RTDK 68C2837G07
KD KPEKM3 5102A14G02
KD KPEK3 5102A14G01
LG L3RTWK 66A4562G05
1. Attach endcap.
Figure 2. Inserting the Unit into the Breaker.
Figure 3. Locking the Unit in Place.
2. Insert unit into breaker.
Breaker must be in OFF or TRIPPED position for assembly.
3. Push down.

3
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 4. Inserting the Screws into the Retainers.
Figure 5. Torquing the Mounting Screws.
4. Insert screws in retainers.
Torque Chart for Connecting PM3 to Breaker
Breaker Frame Head Size Torque
FD Slotted screw 34-38 in-lb
4-4.4 N•m
JG Hex .236" 120-144 in-lb
14-16 N•m
KD Hex .236" 120-144 in-lb
14-16 N•m
LG Hex .315" 275 in-lb
31 N•m
5. Tighten mounting screws to provided torque specifications.

4
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Table 2. FD, JG, KD, LG Terminal Information.
Frame Type Wire Type
Wire Size
Terminal
Materials Catalog Number
Torque
AWG mm2Lb.In. Nm
LG-Frame Cu/Al 500-750(1) 240-380(1) Aluminum TA631L*2 550 62
LG-Frame Cu/Al 2-500(2) 35-240(2) Aluminum TA632L*1*2 375 42
LG-Frame Cu/Al 2-500(1) 35-240(1) Aluminum TA350L 375 42
KD-Frame*3 Cu/Al 2-500(2) 35-240(2) Aluminum TA632L*1*2 375 42
KD-Frame*3 Cu/Al 2-500(1) 35-240(1) Aluminum TA350L 375 42
JG-Frame Cu/Al #4-350(1) 25-185 Aluminum TA250FJ 250 28.2
FD-Frame Cu/Al 4-40 25-95 Aluminum 3TA225FD 120 13.5
*1 Standard collars mounted on line and load end.
*2 Terminal Shield required.
*3 When using PM3 on KD breakers, LG terminals are required on load end of PM3.
CAUTION
TERMINAL SHIELDS MUST BE USED AS PER ORIGINAL CIRCUIT BREAKER
INSTALLATION INSTRUCTIONS.
Figure 6. Layout of LG 3 Pole with PM3.
q
q
12.135
308.23
2.740
69.60
5.480
139.19
8.438
214.33
13.823
351.10
10.125
257.18
5.577
141.66
4.733
120.22
1.719
43.66 .860
21.84
3.984
101.19
4.062
103.17
5.430
137.92
3.984
101.19
4.062
103.17
4.307
109.40
13.823
351.10
5.577
141.66
2.740
69.60
5.480
139.19
8.438
214.33
12.135
308.23
4.733
120.22
1.719
43.66
.860
21.84

5
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 7. Layout of KD 3 Pole with PM3.
Figure 8. Layout of JG with PM3.
4X .125-20 UNC
8.438
214.33
12.137
308.28
10.125
257.18
13.825
351.16
4.922
125.02
.860
21.84
1.719
43.66
5.766
146.46
3.813
96.85
4.062
103.17
4.313
109.55
3.984
101.19
4.89
124.21
5.490
139.45
2.745
69.72 4.062
103.17
2.745
69.72
5.490
139.45
5.766
146.46
13.823
351.10
4.922
125.02
.860
21.84
1.719
43.66
8.438
214.33
12.137
308.28
LOAD END
LINE
END
qHANDLE
LINE END
LOAD END
q
HANDLE
2X M5 x 0.8
C
L
3.952
100.38
11.983
304.37
1.375
34.93
17.48
.688
.781
19.84
3.171
80.54
5.500
139.70
10.500
266.70
2.063
52.40
4.125
104.78
C
LC
L
HANDLE
3.568
90.63
3.438
87.33
3.342
87.17
3.952
100.38
3.344
84.94
3.422
86.92
4.409
111.99
1.375
34.93
17.48
.688
304.80
12.000
10.500
266.70
5.500
139.70 177.8
7.000
100.34
3.952
3.171
80.52

6
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 9. Layout of FD with PM3.
C
LC
LC
L
1.375
34.93
17.45
.687
2.875
73.03
4.500
114.30
9.531
242.09
3.625
92.08
6.000
152.40
11.000
279.40
3.501
88.93
3.385
85.98
3.188
80.98
3.625
92.08
3.625
92.08
11.000
279.40
3.344
84.94
3.422
86.92
3.945
100.20
4.125
104.78
1.375
34.93
.687
17.45
.750
19.05
2.875
73.03
4.500
114.30
9.531
242.09
2.063
52.40

7
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Table 3. PM3 Power Monitoring and Communications Module
Specifications.
Current Input
Pick up current 0.3A rms
Max reported current
FD / JG 250A rms
KD / LD 630A rms
Accuracy 0.5% of reading
Voltage Inputs
Range
Line-to-neutral 30 - 366 Vac
Line-to-line 52 - 635 Vac
Supported Systems 3 element wye, 3 element wye + neutral
2 element delta, 4-wire delta systems
Input Impedance 996 kilo ohm/phase
Burden per phase 0.36 VA/phase max. at 600 V;
0.014 VA at 120 Volts"
Phase Voltage Connections Internal via screw terminal to busbar
Neutral Connection For wye system, a Neutral is required to be connected
to the PM3 on the right Phoenix connector.
If Neutral is not available, the meter will calculate
a virtual Neutral based on the phase to phase RMS
voltage. The system voltage must be balanced for this
to be accurate.
Frequency
Frequency 50 / 60 Hz
Accuracy ± 0.1 Hz
Resolution 0.1 Hz
Power and Energy
Accuracy 1% of reading (ANSI C12.1)
Isolation
All inputs and outputs are galvanically isolated to 2500 volts.
Environmental Ratings
Operating temperature -20º to +50°C (-4 to 122°F)
Storage temperature -20º to +50°C (-4 to 122°F)
Operating humidity To 95% RH non-condensing
Sensing Method
Voltage, current True RMS
Sampling Rate 13.02 K samples per second
Update Rate
Watts, Var and VA 1.03 sec at 60 Hz
All other parameters 1.07 second at 60 Hz
Power Supply
DC voltage 18 – 30 Vdc
Max Current 30.0 mA @ 24 Vdc
Burden 0.72 Watts
Standard Communication Format
Connection type 3 Wire RS-485
(A,B,Common)
Com port baud rate 9600 or 19,200 bauds Default: 19,200
Modbus address range 01 – 247
Data format Selectable (8,N,1 | 8,N,2
| 8,Even,1 | 8,Odd, 1) Default: 8,N,2
Protocols Modbus RTU
Internal Termination Resistor
selectable On or Off Via DIP switch Default: Enabled
Dimensions and Shipping
Weight (lbs) FD 1.26 (0.57 kg)
JG 1.6 (0.73 kg)
KD / LG 2.25 (1.02 kg)
Basic unit (in) FD 4.13 W X 5.00 L X 3.39 H
(104.90 x 127.00 x 86.11 mm)
JG 4.13 W X 5.00 L X 3.39 H
(104.90 x 127.00 x 86.11 mm)
KD / LG 5.48 W X 3.70 L X 4.062 H
(139.19 x 93.98 x 103.17 mm)
Shipping container
dimensions (in) FD/JG 8.0 X 5.13 x 5.5 (203.20 x 130.30 x 139.70 mm)
KD/LG 6.25 X 8.25 X 7.00
(158.75 x 209.55 x 177.80 mm)
Compliance
UL489, Annex J
IEC 61000-4-2 - ESD
IEC 61000-4-4 - EFT
IEC 61000-4-5 - SURGE
IEC 61000-4-6 - EMC
ANSI C12.1 (1% accuracy)
UL®/cUL®/CE

8
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
Figure 10. PM3 Breaker Status Wiring Diagram (KD/LG PM3).
Breaker Status:
Breaker status is brought to the unit through a 5-pin Phoenix
RA-series connector, part number 1844249. Figure 10 shows the pin
assignments for this connector.
CAUTION
FOR WYE SYSTEM, A NEUTRAL IS REQUIRED TO BE CONNECTED TO THE
PM3 ON THE RIGHT PHOENIX CONNECTOR. IF NEUTRAL IS NOT AVAIL-
ABLE, THE METER WILL CALCULATE A VIRTUAL NEUTRAL BASED ON THE
PHASE-TO-PHASE RMS VOLTAGE. THE SYSTEM MUST BE BALANCED FOR
THIS TO BE ACCURATE.
Combination
Auxiliary/alarm
Switch Kit
Red
Bell
Alarm
Black
Blue
Aux
Alarm
Black
Red
Bell
Alarm
No Connect
V
Neutral
Earth
Ground
+24
VDC DC Common
Com BA

9
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
2. Indicators
Figure 11. Status Indicators (KD/LG PM3).
2.1. Status Indicator
A single green LED is used to indicate the status of the
Measurement Board. The indicator has three states:
1. OFF
No light emission indicates internal DC power is not available, or the
Measurement Board has malfunctioned.
2. ON
Continuous light emission indicates power is applied, but the
Measurement Board is executing a power-on self test.
3. Slow Flash
Repetitive one second on, one second off indicates the
Measurement Board is operating normally.
Fast Flash
0.5 second on, 0.5 second off indicates one of three failures:
• Unit not calibrated;
• Unit has not been assembled properly; or
• Unit memory has been damaged.
Status
RX Led
TX Led
A
B
Com
DC Common
+24
VDC
Earth
Ground
Settings Network Address
V
Neutral
Red Bell Alarm
Common
Blue Aux Alarm
No Connect
2.2. Modbus Status Indicator
Modbus Rx Indicator
When illuminated, this green LED indicates the Communications
Board is receiving messages on the Modbus network.
ote:N This LED will typically be a solid green. That is, it will not flash as the
transmit LED does.
Modbus Tx Indicator
When illuminated, this green LED indicates the Communications
Board is transmitting a message on the Modbus network.
ote:N This LED typically flashes as the Communications Board transmits
messages over the Modbus network.

10
Instruction Leaflet IL012002EN
Effective March 2013
Instruction Leaflet for Modbus Power Monitoring/
Metering Module (PM3) for FD, JG, and KD/LG
Circuit Breakers and Motor Circuit Protectors
EATON CORPORATION www.eaton.com
3. Modbus RTU Communications
Modbus is a popular application-layer messaging protocol. The
protocol takes place at the data link layer of the Open Systems
Interconnection (OSI) model. Modbus serial line (Modbus RTU) is a
Master-Slave protocol. A Modbus transaction consists of two mes-
sages: a request from the master, and a reply from the slave.
The Modbus Add-on Module is a Modbus slave. The Modbus physi-
cal layer transmitter and receiver conforms to the RS485 standard.
A Modbus serial line message frame, or Protocol Data Unit, con-
tains:
• An Address Field;
• A Function Code;
• Data; and
• CRC.
Valid addresses are 1 – 247 decimal.
The function code indicates what kind of action to perform.
Examples are:
• 01 – Read Coils;
• 04 – Read Input Registers;
• 06 – Write Single Register;
Messages consist of 11-bit characters. Characters consist of:
• 1 Start Bit;
• 8 Data Bits (least significant bit first);
• 1 Parity Bit (even parity is the default; other modes may be sup-
ported); or
• 1 Stop Bit (2 stop bits if no parity is used).
The least significant bit is transmitted first (see Table 4).
• Modbus Slave, line terminator selectable by dip switch
• Baud rate (9600, 19.2k) selectable by dip switch
• Parity (even, odd, none) selectable by dip switches
3.1. Modbus RS485 Network
The following simplified rules apply to a given system consisting of
a cable link between master and slave devices. For more complex
configurations please refer to standard Modbus RTU wiring specifi-
cation rules for the RS485 network
The recommended Modbus cable has twisted-pair wires (24 AWG
stranded 7x32 conductors with PVC insulation) having an aluminum/
mylar foil shield with drain wire.
• The maximum system capacity is 4,000 feet of communications
cable and 247 devices on the Modbus RTU network.
• Make sure that there is twisted-pair wire that is recommended for
Modbus RTU network use. Use shielded twisted-pair wire to con-
nect each slave to the Modbus RTU network, daisy-chain style.
The polarity of the twisted pair is critically important.
3.2. Modbus Address Switches
Two rotary hexadecimal switches are used to set the Modbus Slave
Address for the unit. Valid addresses are from 0x01 to 0xF7 (1 to
247).
3.3. Exception Codes
Under certain circumstances, the PM3 will return an exception code.
If the function in the query is not supported by the PM3, exception
code 01 is returned in the response.
If the data (object) register is illegal, exception code 02 is returned in
the response.
If the data value in the query is illegal, exception code 03 is returned.
In certain circumstances, an exception code 05 (ACK) is returned.
If the PM3 cannot perform the requested function, exception code
07 (NAK) is returned.
If only a partial register is used in the query, exception code 84 is
returned.