User's Manual

Page 12
X75 SERIES - Mk3 Controller
INSTALLATION & OPERATING MANUAL
Manual No. x75mk3-11
x75-man-Rev11-0815.indd
9.0 REAR PANEL DESCRIPTION
LOAD TERMINALS
BATTERY
BREAKER
BUS BARS
BAT -VO +VO
EXPANSION
SIGNAL INTERFACE
BUS BARS
-VO +VO
AC INPUTS
IEC60320-C14
ETHERNET
ALARMS /
TEMP. COMP.
DIGITAL INPUT
EXTERNAL TEMPERATURE
GND
OFF
321
321
CONSOLE
(reserved)
Figure4-RearViewsofBaseandExpansionUnits
Figures 4 shows the base and expansion unit as viewed from the rear. Following is a
description of each section.
9.1 On the left hand side of the Base Unit, viewed from the rear, is a bank of screw
terminal blocks for the DC load connections.
When the Circuit Breaker option has been specied two connections are provided
for Load and Return for each breaker position.
When the GMT Fuse option has been specied one connection is provided for Load
and Return for each fuse position.
9.2 To the right of the Load connection terminals is the Battery Breaker. This is a
magnetic circuit breaker rated at 100A. This circuit breaker provides two functions.
9.2.1 In the rst instance it enables the user to disconnect the batteries from the
system for maintenance, replacement or other purposed.
9.2.2 The second function is to protect the batteries against excessive charge or
discharge currents.
9.3 To the right and below the battery breaker there is a 9-way D sub connector marked
RS232.
This connector provides a ‘console’ only function to UNIPOWER service personnel
and should not be connected to for any other purpose.