Troubleshooting - Eaton SC200 Operation Handbook

SC200 Handbook

Troubleshooting

Use the table to troubleshoot minor installation and operational problems. For additional
assistance see contact details on page 125. Return items for replacement or repair with a
completed Equipment Incident Report on page 123.
Problem
SC200 displays a dc power
system alarm message.
SC200 LCD is blank and
green Power On LED is off.
SC200 LCD is blank and
green Power On LED is on.
SC200 Red LED or Yellow
LED is on.
Unable to change settings
from SC200 keypad.
Rectifier does not shutdown
when LBRS is enabled.
Monitor OK relay (RLY6) is
de-energized.
Incorrect battery or load
current readings.
100
Possible Cause
RXP/power cable is
disconnected from the SC200.
The ac supply is off and the
batteries are not connected
because the Low Voltage
Disconnect (LVD) has
disconnected.
Faulty Voltage Feed Module
(VFM) or faulty SC200.
SC200 is in start-up mode
Faulty SC200
An alarm is active.
Keypad access is set to Read
Only or PIN Protected.
Load Based Rectifier Shutdown
is not available with APR48-3G
(prior to PR5), EPR48-3G,
APR24-3G and CR48-3G
rectifiers.
An active alarm, digital input or
analog input is mapped to this
relay.
Problem with power or
communications to I/O board.
SC200 or I/O board software
corrupt or hardware fault.
Bus voltage sense polarity is
incorrect.
Incorrectly configured shunt
inputs.
Current is within the Battery
State Threshold. See details on
page 56.
Copyright © 2007-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-50H
Required Action
See Alarm Descriptions on page 109.
Connect cable from connector YS11 to the
dc power system voltage feed module
(see Connections on page 3). Wait for
start-up to complete.
None. The power system including the
SC200 will return to normal operation
when the ac supply is within its specified
voltage range.
Replace faulty unit.
Wait for start-up to complete. See
Starting the SC200 on page 6.
Replace faulty SC200.
Check the type of alarm on the LCD or
with DCTools/Web or PowerManagerII. See
Alarm Descriptions on page 109.
See Keypad Access Security on page 10.
See Load Based Rectifier Shutdown on
page 35.
Check relay mapping. See Digital
Outputs on page 75.
Check all connections (see Connections
on page 3).
Replace faulty unit.
Check the bus voltage sense polarity and
correct if necessary.
Check shunt mapping and gain is correct.
None, normal operation.
November 2011