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Siemens Building Technologies
SED2 variable speed drives
CM1U5192en
HVAC Products
Troubleshooting
01.2002
Error
Cause
Diagnosis & Remedy
Reaction
F0071
USS (BOP link)
setpoint fault
Ø
No setpoints from USS during telegram off
time.
Check communications to data transmission module.
Check USS master.
Off2
F0072
USS (COM link)
setpoint fault
Ø
No setpoints from USS during telegram off
time.
Check USS master.
Off2
F0080
ADC input signal
lost
Ø
Broken wire at analog input.
Ø
Signal level outside defined limits.
Off2
F0085
External fault
Ø
External fault triggered via input terminals.
Disable input terminals for fault trigger, or eliminate
external fault.
Check if DIN is set to ON.
Off2
F0101
Stack overflow
Ø
Software or processor error
Run self-test routines.
Off2
F0221
PID feedback
below min. value
PID feedback below min. value of P2268.
Change value of P2268.
Adjust feedback amplification.
Off2
F0222
PID feedback
below max. value
PID feedback below max. value of P2267.
Change value of P2267.
Adjust feedback amplification
.
Off2
F0450
BIST tests failure
Alarm value:
1.
Some power section tests have failed.
2. Some control board tests have failed.
4. Some functional test have failed.
8. Some I/O module tests have failed.
16. Internal RAM failed on power-up check.
The drive may run, but some functions do not work
properly.
Replace the drive.
Off2
F0452
Belt failure
detected
Ø
Load condition changes at the motor
indicate a belt failure or mechanical fault.
Check the following:
1. Drive belt ok. The drive is not obstructed or seized?
2.
If external speed sensor is used, check proper
function. Check the following parameters:
P0409 (impulses/sec on nominal speed)
P2191 (belt failure and speed monitoring)
P2192 (delay time for P2191).
3. For belt failure detection without sensor, check the
following parameters:
P2182 (threshold frequency f1)
P2183 (threshold frequency f2)
P2184 (threshold frequency f3)
P2185 (upper torque threshold 1)
P2186 (lower torque threshold 1)
P2187 (upper torque threshold 2)
P2188 (lower torque threshold 2)
P2189 (upper torque threshold 3)
P2190 (lower torque threshold 3)
P2192 (delay for belt failure).
4.
Lubricate the drive if necessary.
Off2
