Maintenance
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-52D July 2010
53
System Controller Problems
Problem
Possible Cause
Required Action
SC200 or SC100 displays a
dc power system alarm
message.
See Alarm Descriptions in the System
Controller Operation Handbook.
RXP/power cable is
disconnected from the SC200 or
SC100.
Connect cable from connector YS11 to the
dc power system voltage feed module
(see Connections on page
start-up to complete.
The ac supply is off and the
batteries are not connected
because the Low Voltage
Disconnect (LVD) has
disconnected.
None. The power system including the
SC200 or SC100 will return to normal
operation when the ac supply is within
its specified voltage range.
SC200 or SC100 LCD is
blank and green Power On
LED is off.
Faulty Voltage Feed Module
(VFM) or faulty SC200 or SC100.
Replace faulty unit.
SC200 or SC100 is in start-up
mode
Wait for start-up to complete. See
Starting the SC200 or SC100 on page
SC200 or SC100 LCD is
blank and green Power On
LED is on.
Faulty SC200 or SC100
Replace faulty SC200 or SC100.
SC200 or SC100 Red LED or
Yellow LED is on.
An alarm is active.
Check the type of alarm on the LCD or
with
DCTools/Web
or
PowerManagerII
. See
Alarm Descriptions in the System
Controller Operation Handbook.
Unable to change settings
from SC200 or SC100
keypad.
Keypad access is set to
Read
Only
or
PIN Protected
.
See Keypad Access Security on page
.
An active alarm, digital input or
analog input is mapped to this
relay.
Check relay mapping. See Alarms,
Analog Inputs, or Digital Inputs in the
System Controller Operation Handbook.
Monitor OK relay (RLY6) is
de-energized.
SC200 or SC100 or I/O board
software corrupt or hardware
fault.
Replace faulty unit.
Bus voltage sense polarity is
incorrect.
Check the bus voltage sense polarity and
correct if necessary.
Incorrectly configured shunt
inputs.
Check shunt mapping and gain is correct.
Incorrect battery or load
current readings.
Current is within the
Battery
State Threshold
. See details in the
System Controller Operation
Handbook.
None, normal operation.