Eaton SC200, Operation Handbook

Page: 111 / 139

Maintenance
Copyright © 2007-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-50H November 2011
103
USB communications
problem Incorrect, disconnected or faulty
cable. Check a USB A/B cable is plugged into
the USB port and a PC USB port.
Replace faulty cable.
SC200 serial communications
are disabled. Check S3P Access is enabled. See details
on page 95 .
DCTools not installed on PC or
wrong version. Install latest version of DCTools.
Download from
dcpower.eaton.com/downloads.
Password required to change
settings. See Write Access Password on page 95 .
SC200 time/date is incorrect Time/date is different on SC200
compared to DCTools/Web.
None. Time shown on SC200 is UTC.
Time on PC running DCTools/Web is
local time.
Time needs to be set. See SC200 Internal Clock on page 14 .
SC200 time can be set, but is
incorrect when SC200 restarts. Internal battery is dead. Return SC200 for
service. (If removed, the battery must be
disposed of according to the
manufacturer's instructions.)
String Fail Alarm The Battery Mid-point
Monitoring system has detected
a voltage imbalance in one of
the battery strings. See Battery Mid-point Monitoring in the
dc power system Installation and
Operation Guide.
A Battery Mid-point Monitoring
sense wire is disconnected. Check the sense wires.
I/O board Power/Comms
OK LED is off I/O board is not powered or
faulty. Check connection to YH3 on I/O board.
See Connections on page
3 .
Replace I/O board if faulty.
I/O board Power/Comms
OK LED is flashing. I/O board is responding to an
Identify command from the
SC200.
None, this is normal operation. See
details on page
70 .
LVD Status LED(s) (on I/O
board) are on. LVD contactor is energized. None, this is normal operation.
LVD Status LED(s) are off
(I/O board Power On LED is
on). LVD contactor is de-energized. None, this is normal operation.
LVD Status LED(s) flashing. The contactor is in the wrong
state (SC200 internal state does
not match signal from contactor
auxiliary switch).
Check the electrical and mechanical
operation of the contactor and auxiliary
switch.
Check all wiring and connectors. See
Connections on page
3 .
LVD Type setting is incorrect. Check LVD Type setting.