Siemens G120P Technical Manual page 83

Siemens
Building Technologies
Number Cause
A07920 Torque/speed too low
F07923
A07921 Torque/speed too high
F07924
A07922 Torque/speed out of
tolerance
A07927 DC braking active
A07980 Rotating measurement
activated
A07981 Rotating measurement: No
enable signals
A07991 Motor data identification
activated
A30049 Internal fan defective
A30502 DC link overvoltage
A30920 Temperature sensor fault
Faults
Number Cause
F01000 Software fault in CU
F01001 FloatingPoint exception
F01015 Software fault in CU
F01018 Power-up aborted more
than once
F01033 Switching over units:
Reference parameter value
invalid
F01034 Switching over units:
Calculation of the
parameter values after
reference value change
unsuccessful
F01040 Parameters must be saved
F01044 Fault loading the data from
the memory card
F01105 Insufficient memory
F01122 Frequency at the probe
input too high
F01205 Time slice overflow
F01250 CU hardware fault
F01512 No scaling
Service, maintenance and fault rectification
Fault rectification
Solution
The torque deviates from the torque/speed envelope
curve.
1. Check the connection between the motor and load.
2. Adjust the settings according to the load.
The alarm disappears after DC braking.
The alarm disappears after optimization of the speed
controller.
1. Acknowledge pending faults.
2. Create enable signals which are missing.
The alarm disappears after motor data identification.
Check the internal fan and replace it, if necessary.

1. Check the device supply voltage (p0210).
2. Check the dimensions of the line reactor.
Check that the sensor is correctly connected.

Solution
Replace the CU.

Switch the CU off and on again.

1. Update the firmware
2. Contact Technical Support.
3. Replace the CU.
1. Switch the module off and on again.
2. After this fault has been output, the module is booted
with the factory settings.
3. Recommission the drive.
Set the value of the reference parameter not equal to

0.0 (p0304, p0305, p0310, p0596, p2000, p2001,
p2002, p2003, r2004).
Select the value of the reference parameter so that

the parameters involved can be calculated in the
representation (p0304, p0305, p0310, p0596, p2000,
p2001, p2002, p2003, r2004).
1. Save the parameters (p0971).
2. Switch the CU off and on again.
Replace the memory card of the CU.

Reduce the number of data records.

Reduce the frequency of the pulses at the measuring

input.
Contact Technical Support.

Replace the CU.

An attempt has been made to establish a conversion
factor for scaling which is not present.
Apply scaling or check the transfer value.

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2016-03-17