Front Connectors

The front panel includes screw terminals to connect the current and voltage inputs.

Current Sensor Pin Assignments

Pin #	Description	Connector Diagram
1	+ Channel A
2	- Channel A
3	+ Channel B
4	- Channel B
5	+ Channel C
6	- Channel C
7	+ Channel D
8	- Channel D

Voltage Sensor Pin Assignments

Pin #	Description	Connector Diagram
1	+ Channel A
2	- Channel A
3	+ Channel B
4	- Channel B
5	+ Channel C
6	- Channel C
7	+ Channel D
8	- Channel D

Auxiliary Outputs Pin Assignments

Pin #	Description	Connector Diagram
1	+ IA
2	+ IB
3	+ IC
4	+ ID
5	Vin D
6	Vin C
7	Vin B
8	Vin A
9	GND
10	GND

To minimize connection resistance, it is highly recommended to connect only 1 wire per screw for the current input pins. If the same pin is needed to provide both current and voltage measurement in a ground-phase connection, the auxiliary connector must be used.

Rear Connectors

DB25 Connector Pin Assignments

Pin#	Description	Pin#	Description
1	Ch A Current Sensor Output	14	GND
2	Ch B Current Sensor Output	15	GND
3	Ch C Current Sensor Output	16	GND
4	Ch D Current Sensor Output	17	GND
5	Ch A Voltage Sensor Output	18	GND
6	Ch B Voltage Sensor Output	19	GND
7	Ch C Voltage Sensor Output	20	GND
8	Ch D Voltage Sensor Output	21	GND
9	OPAL-RT technicians use only	22	N/A
10	OPAL-RT technicians use only	23	N/A
11	N/C	24	GND
12	- 15 volts (power)	25	GND
13	+ 15 volts (power)

Power Connector Pin Assignments

Pin#	Description	Connectir Diagram
1	-15 volts
2	GND
3	+15 volts
4	GND

Hardware Products Documentation

OP5511 Connector Pin Assignments