ABB CPS6000 Product Manual page 78

Shelf Paralleling Connector
J2 is a 4-pin connector provided on the controller for paralleling up to three additional shelves. This
connector is accessible when the controller is inserted in the shelf. Two of the lines on the connector
are used for inter-shelf RS-485 communication (RS485+, RS485-), two for shelf addressing, and one for
the current share for rectifiers and one for V-. Pin assignments for this connector are shown in the
following table:
Pin
1
2
3
4
Auxiliary Port Connector
An RJ-45 receptacle (P5) is provided on the QS840A/QS841A board for connecting to the QS773X
VT-Probes or to the QS771A Remote Voltage Monitor. This connector is accessible when the controller
is inserted in the shelf. The signals and pin assignments for this interface are shown in the following
table:
Pin
1
2
3
4
5
6
7
8
Page 78
© Copyright 2021 ABB. All rights reserved.
J3 Isolated RS - 232 port
P5 Auxiliary Port
J2 Shelf Paralleling Connector
J1 Office Alarm Connector
Controller Faceplate Connector
Figure 6-1: Controller Connectors for QS840 and QS841A
Signal Description
RS485+ RS-485 GP communication bus
RS485- RS-485 GP communication bus
RECT_PG_EN Programming enable signal to rectifier (future use)
ISHARE Rectifier analog current share
Signal Description
RS-485 +
RS485 GP communication bus
RS-485 -
RS485 GP communication bus
SIG_RTN
Protected signal return for RS485 and 1-wire
1-Wire
1-wire communication signal
+5V
Protected +5V Power