Siemens Micro Master 440 VFD Drive Fault Code Part-1

In this Article we are going to discuss about Siemens Micro master 440 VFD drive Fault code and cause also remedy part-1

Fault code’s (F0001 , F0002 , F0003 , F0004 , F0005 , F0011 , F0012 , F0015 , F0020 , F0021 , F0022 , F0023 , F0024 )

• Fault messages are stored in parameter r0947 under their code number (e.g. F0003 = 3).

• The associated error value is found in parameter r0949.

• The value 0 is entered if a fault has no error value.

• It is further more possible to read out the point in time that a fault occurred (r0948) and the number of fault messages (P0952) stored in Parameter r0947.

 

Fault F0001 :  Over-Current

Quit :

• Remove fault and reset fault memory by disconnecting the drive converter from the line supply and powering-up again.

• Press the Function key on the BOP or AOP

• Acknowledge fault P2103, P2104

• P0952 (complete fault memory).

Cause :

• Short-circuit at the output.

• Ground fault.

• Excessively large motor (the motor power rating P0307 is greater than the inverter power r0206).

• Defective final stage (end stage).

Diagnosis & Remedy

• Are the cable lengths within the limit values.

• Does the motor cable or motor have either a short-circuit or ground fault.

• Do the motor parameters correspond to those of the motor being used.

• Is the motor overloaded or stalled (locked rotor).

• Increase the accelerating time.

• Reduce the gain

• Use a motor with a lower power rating

• Is the stator resistance value (P0350) correct.

 

Fault : F0002 Over voltage

Quit : Refer to F0001

Cause :

• DC link voltage (r0026) higher than the over voltage threshold (refer to parameter r0026).

• Ground fault

Diagnosis & Remedy :

• Is the line supply voltage within the permissible range.

• Has the DC current DC link monitoring been enabled (P1240) and correctly parameterized.

• Extend the deceleration ramp (ramp-down time P1121, P1135)

• Remove the ground fault

• Is the required braking power within the permissible limits.

 

Note:

• A higher moment of inertia requires longer deceleration times; if required, use a braking resistor.

• Overvoltage can either be caused by an excessively high line supply voltage or by the fact that the motor is generating (regenerative mode).

• The motor can be generating as it is decelerating quickly or due to the fact that an active load is driving the motor.

 

 

Fault : F0003 Under voltage

Quit : Refer to F0001

Cause :

• line voltage failed

• shock stressing outside the permissible limits.

Diagnosis & Remedy :

• Is the line supply voltage within the permissible range.

• Is the line supply voltage stable with respect to sporadic failures and voltage dips (brown-outs).

 

Fault : F0004 Inverter Over Temperature

Quit : Refer to F0001

 Cause :

• Inadequate cooling

• Ambient temperature is too high.

 

Diagnosis & Remedy :

• Is the pulse frequency P1800 set to the factory setting, If required reset P1800.

• Does the ambient temperature lie within the permissible limits.

• Reduce the load and / or ensure adequate cooling.

• Does the fan rotate if the inverter is operational.

 

Fault : F0005 Inverter I2T

Quit : Refer to F0001

 Cause :

• Inverter overloaded.

• Load duty cycle too high.

• The motor power rating (P0307) is greater than that of the inverter (r0206).

• 100 % overload reached (refer to utilization r0036)

Diagnosis & Remedy :

• Does the load duty cycle lie within the permissible limits.

• Use a motor with a lower rating (motor power P0307 is greater than ls inverter power r0206)

 

Fault : F0011 Motor Over Temperature

Quit : Refer to F0001

Cause : Motor overloaded

Diagnosis & Remedy :

• Is the load cycle correct .

• Are the rated/nominal motor over temperatures correct (P0626-P0628).

• Is the alarm threshold correct for the motor temperature (P0604).

 

Fault : F0012  No Inverter Temperature Signal

Quit : Refer to F0001

Cause : Wire breakage of the Inverter-Temperature Sensor (heatsink)

Diagnosis & Remedy : Replace the inverter

 

Fault : F0015 No Motor Temperature signal

Quit : Refer to F0001

Cause :

• Motor temperature sensor either short-circuited or open-circuit.

• If it is identified that a signal has been lost, then the temperature monitoring changes-over to monitoring based on the thermal-motor model.

 

Fault : F0020 Line supply phase missing

Quit : Refer to F0001

Cause : 

• A fault is output if one of the three input phases is missing, the pulses are enabled and a load is present

Diagnosis & Remedy : Are the power connections.

 

Fault : F0021 Ground fault

Quit : Refer to F0001

Cause:

• The fault occurs if the sum of the phase currents is greater than 5 % of the inverter rated current.

Note : 

• This fault only occurs for inverters with 3 current sensors (sizes D to F, GX, FX).

Diagnosis & Remedy :

• Are the connections at the motor terminal boxes.

• Are the motor cable connections at the inverter.

 

Fault : F0022 Hardware Monitoring Active

Quit : Refer to F0001

 

Cause :

This fault (r0947 = 22 and r0949 = 1) occurs under the following circumstances

1. DC link over-current condition = IGBT short-circuit
2. Braking chopper short-circuit
3. Ground fault
4. I/O module not correctly inserted

 For the following sizes the above faults can occur:

• size A to C (1),(2),(3),(4)
• size D to E (1),(2), (4)
• size F (1),(2)

Size D,E,F

Size A,B,C

 The following faults only occur in conjunction with sizes FX / GX:

• UCE faults are identified if r0947 = 22 and the fault value r0949 = 12 or 13 or 14.

• I2C bus error is identified if r0947 = 22 and the fault value r0949 = 21 (power-down and then power-up again).

 Note :

• All of these faults are assigned to a signal in the power module. 

• This means that it is not possible to determine which fault actually occurred.

Diagnosis & Remedy :

• You must first identify as to whether the fault is permanent (i.e. the inverter cannot be started without the fault occurring) or it sporadically occurs (occasionally occurs or under certain operating conditions).

 

Permanent fault F0022:

• Check whether the I/O module is correctly inserted (refer to the Operating Instructions).

• Is there a ground fault or short-circuit at the inverter output or at an IGBT.

• You can identify this by disconnecting the motor cable.

• In the case that the fault occurs, if all of the external cables (with the exception from the line supply voltage) are disconnected, then with a high degree of probability, the drive unit is defective and must be repaired.

 

Sporadic fault F0022:

This fault should be treated as "over current". If fault F0022 sporadically occurs, the causes can be as follows:

• sudden load changes or mechanical obstructions.

• extremely short ramp-up times (accelerating times).

• poor optimization of the sensor less closed-loop vector control.

• incorrect braking resistor is installed with an excessively low resistance.

 

Fault : F0023 Output fault

Quit : Refer to F0001

Cause : One output phase has not been correctly connected.

Diagnosis & Remedy :

• Are the connections at the motor terminal box.

• Are the motor cable connections at the inverter.

 

Fault : F0024 Rectifier Temperature Too High

Quit : Refer to F0001

Cause :

• Inadequate cooling.

• Fan is not operational.

• Ambient temperature is too high.

Diagnosis & Remedy :

• Does the fan rotate when the inverter is powered-up (A0520, A0521).

• Is the pulse frequency set to the factory setting , If required, reset.

• Is the ambient temperature within the permissible limits (A0520, A0521).

 

In next Article we are going to see balance Fault code’s , Well i hope this article was useful to you, If you need more informative Article please follow our Blogger. Thank you for Visit our Blog.Have a great day.