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KraftPowercon Sweden AB, Hjalmar Petris väg 49, S-352 46 Växjö, Sweden, Tel: +46 470-705200, Fax: +46 470-705201,
www.kraftpowercon.com
The rectifier module's green indicator lamp ”AC OK” is lit and ”DC OK” is off
Cause 1: The rectifier module is in standby mode which is a normal condition.
Cause 2: The input ”EXT. FAULT” is used as external blocking and is in open state. Only valid
if all modules shares the same symptom.
Cause 3: The rectifier module has tripped due to overvoltage on the DC output (HVSD). The
module may need to be replaced.
Cause 4: The rectifier module has tripped due to high temperature. Wait until it has cooled off
and it will start by itself.
Cause 5: The rectifier module might be defective. Try to replace it.
The rectifier module's red indicator lamp”ALARM” is lit
Cause 1: If the cause is not obvious, e.g. due to the former presented alternatives, you can use
the monitoring unit display to show the status of the rectifier modules in detail, see
the
Manual for monitoring unit PCM2
.
The rectifier output voltage is too low
Cause 1: The rectifier load is greater than its capacity (rated current). This is a normal
condition during recharging following a deep discharge.
Cause 2: A battery circuit test is in progress. This is a test that is normally executed
automatically once a day.
Cause 3: The selected charging voltage (float charge or equalization charge) is close to or
greater than the limit for parameter U
maximum
. The output voltage cannot exceed
(U
maximum
– 1%). If a higher charging voltage is required, the value of U
maximum
must be
increased, see
Manual for monitoring unit PCM2.
Cause 4: High temperature in battery/battery room. Only applicable if the parameter settings
allow temperature regulation of the float charging voltage. In this case, there is no
fault related to the rectifier. Look for the fault related to the high temperature
instead. Alternatively the temperature sensor could be defective. Check whether the
display is reporting the correct battery temperature.
Cause 5: Incorrect float charging voltage level setting. Adjust the setting.
Cause 6: Incorrectly calibrated voltage measurement. Recalibrate the monitoring unit's
measurement of battery voltage.
Cause 7: The current is internally limited due to high internal temperature or internal power
limitation.
The rectifier output voltage is too high
Cause 1: Equalization charging in progress. This has either been initiated manually or
automatically following a power failure.
Cause 2: Low temperature in battery/battery room. Only applicable if the parameter settings
allow temperature regulation of the float charging voltage. In this case, there is no
fault related to the rectifier. Look for the fault related to the low temperature instead.
Alternatively the temperature sensor could be defective. Check whether the display
is reporting the correct battery temperature.
Cause 3: Incorrect float charging voltage level setting. Adjust the setting.
Cause 4: Incorrectly calibrated voltage measurement. Recalibrate the monitoring unit's
measurement of battery voltage.
Rectifier modules does not share the load equally
Cause 1: The current is to high/low to be in the range where active loadsharing is in operation.
The loadsharing is active in the range of about 10-90 % of rated current.
