
This document is the sole property of
ICE. No duplication nor release to third
party is allowed without prior
authorization.
NPRG 870 – NPRG 860
User’s Guide
Date : 09/2010
Edition :13/06/2017
Sheet : 23
Issue : D
7.2 External
connections
Connections
Location
Characteristics
Modbus® or IEC870-5-
103 Communication
RS485-1
RS485-2
Screw terminal block. Section of wire 0.6 to 2.5 mm²
Connection of the VTs
A
Screw terminal block. Section of wire 0.6 to 2.5 mm²
Digital Inputs
B
Screw terminal block. Section of wire 0.6 to 2.5 mm²
Relays
C and D
Screw terminal block. Section of wire 0.6 to 2.5 mm²
Auxiliary supply
AUX
Screw terminal block. Section of wire 0.6 to 2.5 mm²
Add-on relays
(NPSC800-2 only)
E et F
Screw terminal block. Section of wire 0.6 to 2.5 mm²
Add-on relays
(NPSC800-2 only)
G
Screw terminal block. Section of wire 0.6 to 2.5 mm²
Modbus® Communication
– redundancy
(NPSC800-2
option)
RS485-2
Screw terminal block. Section of wire 0.6 to 2.5 mm²
7.3 Connection diagrams reference
Relay Version
Remarks
Diagram reference
NPRG 860
S 38894
NPRG 870
S 38895