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Siemens Building Technologies
SED2 variable speed drives
CM1U5192en
HVAC Products
Troubleshooting
01.2002
Error
Cause
Diagnosis & Remedy
Reaction
F0022
Power stack fault
The fault is caused by the following events:
♦
(1) dc link overcurrent =short circuit of
IGBT.
♦
(2) short circuit of dc link chopper.
♦
(3) earth fault.
Ø
Frame sizes A to C (1),(2),(3).
Ø
Frame sizes D to E (1),(2).
Ø
Frame size F (2).
Since all these faults are assigned to one
signal on the power stack, it is not possible to
establish which one actually occurred.
Off2
F0023
Fault at VSD
output
The On-phase is interrupted at the VSD
output.
Off2
F0024
Rectifier
overtemperature
Ø
The ventilation is inadequate.
Ø
The fan is inoperative.
Ø
The ambient temperature is too high.
Check the following:
1. The fan must turn when the VSD is running.
2.
The pulse frequency (P1800) must be set to default
value 4 kHz.
F0030
Fan fault
Ø
The fan no longer works.
The fault cannot be masked while the options module
(AOP or BOP) is connected.
Replace the fan.
Off2
F0041
Motor data
identification
failure
Ø
Motor data identification failed.
Ø
Alarm value = 0: Load is missing.
Ø
Alarm value = 1: Current limit value
reached during identification.
Ø
Alarm value = 2: Identified stator resistance
less than 0.1% or more than 100%.
Ø
Alarm value = 3: Identified rotor resistance
less than 0.1% or more than 100%.
Ø
Alarm value = 4: Identified stator reactance
less than 50% or more than 500%.
Ø
Alarm value = 5: Identified main reactance
less than 50% or more than 500%.
Ø
Alarm value = 6: Identified rotor time
constant less than 10 ms or more than 5s.
Ø
Alarm value = 7: Identified total leakage
reactance less than 5% or more than 50%.
Ø
Alarm value = 8: Identified stator leakage
reactance less than 25% or more than
250%.
Ø
Alarm value = 9: Identified rotor leakage
reactance less than 25% or more than
250%.
Ø
Alarm value = 20: Identified IGBT ON-
voltage less than 0.5 or more than 10 V.
Ø
Alarm value = 30: Current controller at
voltage limit.
Ø
Alarm value = 40: Inconsistency of
identified data set, at least one
identification failed.
Percentage values based on impedance
Zb = Vmot,nom / sqrt(3) / Imot,nom.
0:
Check if the motor is connect to the VSD.
1-40: Check if the motor data in P304-311 are correct.
Check the type of motor wiring required (star, delta).
Off2
F0051
Parameter
EEPROM fault
Ø
Read or write failure while saving non-
volatile parameter.
Reset VSD to factory setting and re-parameterize.
Off2
F0052
Power stack fault
Ø
Read failure for power stack information or
invalid data.
Exchange VSD.
Off2
F0053
I/O EEPROM fault
Ø
Read failure for I/O EEPROM information
or invalid data.
Check the data.
Exchange the I/O module.
Off2
F0054
Wrong I/O print
Ø
I/O print is not connected.
Ø
Wrong I/O print is connected.
Ø
NO ID found on I/O print, no data.
Check data flow.
Exchange I/O module.
Off2
F0060
ASIC timeout
Ø
Internal communication error.
If error reappears, exchange VSD.
Contact customer service.
Off2
F0070
CB setpoint fault
Ø
No setpoints from CB (communications
board) during telegram off time.
Check communications module (CB) and
communications partner.
Off2
