A0511 Motor Overtemperature; A0520 Rectifier Overtemperature; A0521 Ambient Temperature Too High; A0535 Brake Resistor Hot - Siemens MICROMASTER 440 Parameter Manual

Faults and Alarms
A0510 Motor overtemperature

A0511 Motor overtemperature

Cause
- motor is overloaded.
- load duty cycle is exceeded.
Diagnosis & Remedy
Check, independently of the type of temperature monitoring:
- P0604 alarm threshold, motor overtemperature
- P0625 motor ambient temperature
If P0601 = 0 or 1, please check the following:
- is the motor data correct (rating plate)?, if not, carry-out a fast commissioning routine
- precise temperature values from the motor identification routine (P1910=1).
- is the motor weight correct (P0344)?
- the permissible overtemperature can be changed using P0626, P0627, P0628, if the motor is not a
standard Siemens motor.
If P0601 = 2, then please check the following:
- is the temperature displayed in r0035 plausible?
- is an KTY84 temperature sensor being used? (others are not supported).

A0520 Rectifier overtemperature

Cause
- alarm threshold of the rectifier heatsink exceeded.
Diagnosis & Remedy
Please check the following:
- is the ambient temperature within the permissible range ?
- are the load and load duty cycle within the permissible range ?
- does the fan operate if the inverter is operational ?

A0521 Ambient temperature too high

Cause
- alarm threshold of the permissible ambient temperature exceeded.
Diagnosis & Remedy
Please check the following:
- is the ambient temperature within the permissible range ?
- does the fan operate if the inverter is operational ?
- is the air feed to the fan obstructed ?
A0522 Read I2C, time exceeded
Cause
- cyclic access to UCE values and power module data via i2c bus (only for sizes FX and GX) is faulted.
A0523 Output fault
Cause
- an output cable is not connected.
Diagnosis & Remedy
- alarm can be suppressed.

A0535 Brake resistor hot

Cause
- the load duty cycle of the braking resistor has been exceeded.
- when the load duty cycle is exceeded, then it is automatically limited to the value P1237.
Diagnosis & Remedy
- use a braking resistor with higher power rating / higher load duty cycle.
A0541 Motor data identification routine active
Cause
- motor data identification routine (P1910) selected and is active
A0542 Speed controller optimization running
Cause
- speed controller optimization (P1960) is selected and is presently active.
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Issue 01/06
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0