Faults and Alarms

Issue 01/06

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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MICROMASTER 440 Parameter List

6SE6400-5BB00-0BP0

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Siemens 440 A0510 Motor overtemperature A0511 Motor overtemperature, A0520 Rectifier overtemperature, A0523 Output fault