Access Power Solutions Installation and Operation Guide (APS6-300/500 and APS12-300 Series)
64
Copyright © 2007-2013 Eaton Corporation. All Rights Reserved.
IPN 997-00012-49G May 2013
Replacing the Input/Output Board
When the I/O board is removed any LVD fitted will disconnect:
If a battery disconnect LVD is fitted the battery will be disconnected when the I/O
board is removed (the load equipment will continue to operate from the rectifiers).
If a load disconnect LVD is fitted then this LVD must be bridged so that the loads are
not disconnected when the I/O board is removed.
Before you start you will require:
A PC/Laptop with
DCTools*
connected to the system controller or (SC200 only) a web
browser* connected to the system controller via an IP network.
*See Communications Options in the System Controller Operation Handbook.
A replacement input/output board.
An anti-static wrist strap to prevent damage to the static sensitive components on the
input/output board.
If a load disconnect LVD is fitted:
APS6 models:
A 450mm (18") long bridge cable terminated with one M8 and
one M6 crimp lug. Cable size to suit the low priority load
current.
One M8 bolt, nut, spring washer, 2 x flat washers and one M6
bolt, nut, spring washer, 2 x flat washers.
APS12 models:
A 450mm (18") long bridge cable terminated with M10 crimp
lugs. Cable size to suit the low priority load current.
2 x M10 bolts, nuts, spring washers, and 4 x flat washers.
Step 1 - Remove top cover (if fitted)
Step 2 - Bridge load disconnect LVD (if fitted)
Ignore this step if there is no load disconnect LVD fitted.
1
Connect the LVD bridge cable as in the following diagram.
Be careful not to accidentally create a short circuit from the rectifier bus to the
common bus or system chassis.
Diagram shows an APS6 model. APS12 model is similar.
2
Tighten the bolts according to the standard torque settings on page