Reference: A938
Index: B
Page 100
This document is the property of ICE SAS. It can not be reproduced or communicated to third parties without authorization.
Instruction Manual – NPS914 Alarm and Indication IED
9.2. CPU module
Figure. 9.2. - 3. CPU module.
Module connectors
Table. 9.2. - 1. Module connector descriptions.
Connector
Description
COM A
Communication port A, or the RJ-45 port. Used for the setting tool connection and for IEC 61850, Modbus/
TCP, IEC 104, DNP3 and station bus communications.
COM B
Communication port B, or the RS-485 port. Used for the SCADA communications for the following protocols:
Modbus/RTU, Modbus I/O, SPA, DNP3, IEC 101 and IEC 103. The pins have the following designations: Pin 1 =
DATA +, Pin 2 = DATA
–, Pin 3 = GND, Pins 4 & 5 = Terminator resistor enabled by shorting.
Model with 3 digital inputs
Model with 2 digital inputs
X 1
Digital input 1, nominal threshold voltage 24 V, 110 V
or 220 V.
Digital input 1, nominal threshold voltage 24 V, 110 V
or 220 V.
X 2
Digital input 2, nominal threshold voltage 24 V, 110 V
or 220 V.
GND for digital input 1.
X 3
Digital input 3, nominal threshold voltage 24 V, 110 V
or 220 V.
Digital input 2, nominal threshold voltage 24 V, 110 V
or 220 V.
X 4
Common GND for digital inputs 1, 2 and 3.
GND for digital input 2.
X 5:6
Output relay 1, with a normally open (NO) contact.
X 7:8
Output relay 2, with a normally open (NO) contact.
X 9:10
Output relay 3, with a normally open (NO) contact.
X 11:12
Output relay 4, with a normally open (NO) contact.
X 13:14:15
Output relay 5, with a changeover contact.
