Siemens MICROMASTER 420 1.1 kW 1-phase frequency inverter, 230 Vac to , 6SE6420-2AB21-1BA1 6SE6420-2AB21-1BA1 Datenbogen
Produktcode
6SE6420-2AB21-1BA1
International English 6. TROUBLESHOOTING
96
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
Table 6-3
MICROMASTER 420 Warning Codes
Warning
Code
Description
Possible Cause
Diagnosis & Remedy
A0501
Current Limit
1. Check whether the motor power
corresponds to the inverter
power.
2. Check that the cable length limits
have not been exceeded.
3. Check motor cable and motor for
short-circuits and earth faults.
4. Check whether the motor
parameters correspond with the
motor being used.
5. Check the stator resistance.
6. Increase the ramp-up-time.
7. Reduce the boost.
8. Check whether the motor is
obstructed or overloaded.
corresponds to the inverter
power.
2. Check that the cable length limits
have not been exceeded.
3. Check motor cable and motor for
short-circuits and earth faults.
4. Check whether the motor
parameters correspond with the
motor being used.
5. Check the stator resistance.
6. Increase the ramp-up-time.
7. Reduce the boost.
8. Check whether the motor is
obstructed or overloaded.
A0502
Overvoltage limit
Mains supply too high,
Load regenerative
Ramp-down time too short
1. Check that mains supply voltage is
within allowable range
within allowable range
2. Increase ramp down times
Note:
Vdc-max controller is active, ramp-
down times will be automatically
increased.
down times will be automatically
increased.
A0503
UnderVoltage Limit
Mains supply too low
Short mains interruption
Ensure that mains supply voltage
remains within allowable range
remains within allowable range
A0504
Inverter
Overtemperature
Overtemperature
Warning level of inverter heat-sink
temperature is exceeded, resulting
in pulse frequency reduction and/or
output frequency reduction
(depending on parameterization)
temperature is exceeded, resulting
in pulse frequency reduction and/or
output frequency reduction
(depending on parameterization)
1. Check if ambient temperature is
within specified limits.
2. Check load conditions and duty
cycle.
3. Check if fan is turning when drive is
running.
within specified limits.
2. Check load conditions and duty
cycle.
3. Check if fan is turning when drive is
running.
A0505
Inverter I
2
T
Warning level is exceeded; current
will be reduced if parameterized.
will be reduced if parameterized.
Check if duty cycle is within specified
limits.
limits.
A0506
Inverter Duty Cycle
Heatsink temperature and thermal
junction model are outside of
allowable range
junction model are outside of
allowable range
Check if duty cycle are within
specified limits.
specified limits.
A0511
Motor Overtemperature
I
I
2
T
Motor possibly overloaded.
1. Check parameter for motor thermal
time constant.
time constant.
2. Check parameter for motor I
2
T
warning level.
3. Check if long periods of operation
at low speed are occuring
at low speed are occuring
4. Check that boost settings are not
too high
too high
A0600
Real Time Operating
System Overrun
Warning
System Overrun
Warning
Software error
Contact Siemens
A0700
CB Warning 1 – see
CB manual for details
CB manual for details
Communication Board specific
See CB User Manual
A0701
CB Warning 2 – see
CB manual for details
CB manual for details
Communication Board specific
See CB User Manual
A0702
CB Warning 3 – see
CB manual for details
CB manual for details
Communication Board specific
See CB User Manual
A0703
CB Warning 4 – see
CB manual for details
CB manual for details
Communication Board specific
See CB User Manual
A0704
CB Warning 5 – see
CB manual for details
CB manual for details
Communication Board specific
See CB User Manual
A0705
CB Warning 6 – see
CB manual for details
CB manual for details
Communication Board specific
See CB User Manual