Issue 01/06 | Faults and Alarms |
5.2Alarm Messages
Alarm messages are stored in parameter r2110 under their code number (e.g. A0503 = 503) and can be read out from there.
A0501 Current limit value
Cause
-the motor power rating does not correspond to the inverter power rating
-motor cables are too long
-ground fault
Diagnosis & Remedy
Please check the following:
-does the motor power rating (P0307) match the inverter power rating (r0206) ?
-are the limit values for the cable lengths maintained ?
-does the motor cable or motor have a
-do the motor parameters correspond to those of the motor being used ?
-stator resistance value (P0350) correct ?
-is the motor overloaded or is the rotor locked (cannot rotate) ?
-
A0502 Overvoltage limit value
Cause
-the overvoltage limit value has been reached (actual value of the DC link voltage r0026 greater than r1242).
Diagnosis & Remedy
-if this alarm is permanently displayed, check the inverter input voltage.
-is the DC link voltage controller (Vdc_max controller)
-short ramp times and/or large flywheel masses (moment of inertia) ?
A0503 Undervoltage limit value
Cause
-line supply has failed.
-line voltage and therefore also the DC link voltage (r0026) below the defined limit value (refer to parameter r0026).
Diagnosis & Remedy
-check the line voltage.
A0504 Inverter overtemperature
Cause
-alarm threshold of the inverter heatsink temperature (P0614) was exceeded; this results in a reduction of the pulse frequency and/or the output frequency (dependent on the parameterization in (P0610).
Diagnosis & Remedy
Please check the following:
-is the ambient temperature within the permissible limits ?
-are the load and load duty cycle within the permissible limits ?
A0505 Inverter I2T
Cause
-overload alarm limit P0294 is exceeded (refer to utilization r0036)
-the pulse frequency and/or the output frequency is reduced as a function of the setting of parameter P0290.
Diagnosis & Remedy
-check whether the load duty cycle lies within the permissible limits.
A0506 Inverter load duty cycle
Cause
-difference between the temperature at the heatsink and IGBT exceeds the alarm limit values.
Diagnosis & Remedy
-please ensure that the load duty cycle and load surge lie within the permissible limits.
MICROMASTER 440 | Parameter List |
315 |