©2007 Magnum Energy Inc.
17
Troubleshooting
6.0 Troubleshooting
The Sense Module may not function correctly, use the following table to help
fi
nd a solution.
Info:
Before using this table to troubleshoot, review
Table 5-1, LED
Indicator Guide
. This table will help to troubleshooting the sense
module.
Table 6-1, Troubleshooting Guide
Symptom
Solution
1. Battery meter
displays not
responsive and giving
incorrect readings; or
2. BM Status = “No
Comm” or “Pwr-up
Fault”.
Ensure LED on Sense Module is on solid green
(indicates normal operation). If not green, use
Table 5-1, LED Indicator
to troubleshoot.
If green, disconnect the terminal block for
5 seconds and reconnect to reset the sense
module.
AH I/O reading resets. This is normal. When the battery is full (100%
SOC) and after the batteries have discharged
≥
0.5% of the battery capacity, the AH I/O
synchronizes and the value resets.
DC Volts reading is
incorrect
Measure the voltage between the red (terminal
4/positive) and black (terminal 3/negative)
wire on the terminal block in the sense module.
If the voltage at the Sense module and the
voltage displayed on the ME-RC display differ
by more than 0.2 volts, then examine these
wires for an open circuit or a bad connection,
reconnect or replace if necessary. Voltage from
terminal 3 to 4 must be from 7 to 70 volts DC.
DC Amps reading is
incorrect
Examine the twisted pair wires (orange and
blue) for an open circuit or bad connections,
reconnect or replace if necessary. Ensure the
wires are fully twisted up to the sense module
and up to the DC shunt.
DC Amps polarity
reading is reversed
(i.e. positive while
inverting and/or
negative while battery
charging).
The leads from the twisted pair (orange and
blue) to the shunt sense screws are reversed.
Reverse the leads of the twisted pair wire on the
shunt or at the terminal block.
The “Min DC” or “Max
DC” displays shows
0.0 volts.
The Battery Monitor is not communicating, check
that the connections to the Sense Module are
correct.
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