Alarm Messages; Alarm Messages - Siemens Micromaster 440 Operating Instructions Manual

Issue 12/02
6.4

Alarm 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
Possible Causes
! Motor power (P0307) does not correspond to the inverter power (P0206)
! Motor leads are too long
! Earth faults
Diagnose & Remedy
Check the following:
1. Motor power (P0307) must correspond to inverter power (r0206)
2. Cable length limits must not be exceeded
3. Motor cable and motor must have no short-circuits or earth faults
4. Motor parameters must match the motor in use
5. Value of stator resistance (P0350) must be correct
6. Motor must not be obstructed or overloaded
! Increase the ramp-up-time.
! Reduce the boost level (V/f control: P1311 & P1312, Vector control: P1610 & P1611)
A0502 Overvoltage limit
Possible Causes
! Overvoltage limit is reached
! This warning can occur during ramp down, if the dc-link controller is disabled (P1240 = 0)
Diagnose & Remedy
Check the following:
1. Supply voltage (P0210) must lie within limits indicated on rating plate
2. DC-link voltage controller must be enabled (P1240) and parameterized properly
3. Ramp-down time (P1121) must match inertia of load
4. Required braking power must lie within specified limits
A0503 UnderVoltage Limit
Possible Causes
! Main supply failed
! Main supply (P0210) and consequently DC-link voltage (r0026) below specified limit (P2172)
Diagnose & Remedy
1. Supply voltage (P0210) must lie within limits indicated on rating plate
2. Supply must not be susceptible to temporary failures or voltage reductions
! Enable kinetic buffering (P1240 = 2)
A0504 Inverter OverTemperature
Possible Causes
Warning level of inverter heat-sink temperature (P0614) is exceeded, resulting in pulse frequency
reduction and/or output frequency reduction (depending on parameterization in P0610)
Diagnose & Remedy
Check the following:
1. Load conditions and duty cycle must be appropriate
2. Fan must turn when inverter is running
3. Pulse frequency (P1800) must be set to default value
4. Ambient temperature could be higher than specified for the inverter
2
A0505 Inverter I t
Possible Causes
Warning level (P0294) exceeded, output frequency and/or pulse frequency will be reduced if
parameterized (P0290)
Diagnose & Remedy
Check the following:
1. Load duty cycle must lie within specified limits
2. Motor power (P0307) must match inverter power (r0206)
MICROMASTER 440
6SE6400-5AW00-0BP0
Operating Instructions
6 Troubleshooting
99