Eaton APS6-400 Series, Installation And Operation Manual

Page: 61 / 114

Maintenance
Copyright © 2009-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-53B December 2010
53
Problem Possible Cause Required Action
String Fail Alarm (SC200
only) The Battery Mid-point
Monitoring system has detected
a voltage imbalance in one of
the battery strings. See Battery Mid-point Monitoring on
page
64 .
A Battery Mid-point Monitoring
sense wire is disconnected. Check the sense wires.
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.
SC200 or SC100 LCD is
blank and green Power On
LED is off. 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
81 ). Wait for
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.
Faulty Voltage Feed Module
(VFM) or faulty SC200 or SC100. Replace faulty unit.
SC200 or SC100 LCD is
blank and green Power On
LED is on. SC200 or SC100 is in start-up
mode Wait for start-up to complete. See
Starting the SC200 or SC100 on page
43 .
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 44 .
Monitor OK relay (RLY6) is
de-energized. An active alarm, digital input or
analog input is mapped to this
relay. Check relay mapping. See Digital
Outputs in the System Controller
Operation Handbook.
Problem with power or
communications to I/O board. Check all connections (see Connections
on page
81 ).
SC200 or SC100 or I/O board
software corrupt or hardware
fault. Replace faulty unit.