Page 3
© 2021 ABB. All rights reserved.
QUICK START GUIDE
Step 3
-
Connect Chassis Ground, DC Reference (CO) Ground, and DC Cables
Connections are on the rear. Not provided: lugs and lug hardware.
CAUTION: Verify battery voltage and polarity with a voltmeter before proceeding.
DANGER: Protect input cables or disconnect all input circuit protectors prior to making connections to the system.
1.
Ground chassis
-
6 AWG recommended, #10 or
1/4”
on
5/8”
center lug. Torque to 35 in
-
lb (4Nm)
-
5/16”
socket.
Note:
Some applications rely on frame mounting screws for shelf ground omitting the shelf ground cable.
Note:
Some applications rely on grounding a single shelf of a multi
-
shelf system, omitting the shelf ground cable on other
shelves.
2.
DC Reference Ground
-
Make a single DC Reference Ground connection to Output Feed Return either at the converter sys-
tem or to the Return bar of external
-
48V distribution
-
6AWG recommended.
3.
Install DC cables—Lug Landings:
3/8”
on
1”
centers. Max tongue width:
1.4”
Torque to 240 in
-
lb (27Nm).
Note:
Input Feed Returns must be externally connected to DC Reference (CO) ground.
Chassis Ground Option
Input Feeds +24V
Input Feed Return
Output Feed Return
Output Feed –
48
V
Communication cables
and Switches
J3/J4 shelf to shelf
comm. ports
J1 Alarm Outputs
top shelf
J5 LAN
-
top shelf
J2 Alarm Inputs
top shelf
SW1 Output Voltage
SW2 Shelf ID
USB Craft Port
J1 ,J2 and J5 are covered on supplementary shelves
Shelf to shelf
Communication
cables J3/J4
Signal Connections and Shelf Switches
