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Gardner Denver
9 Faults and Warnings
33
9.6
Fault Numbers E500 .. E531 (VSD-
related)
Fault Numbers E500 .. E531
Display
Possible Cause
Remedy
Fault E500:
Pre-Adjustment VSD
The frequency converter was faulty or
not programmed (replacement device),
so it had to be reprogrammed by the GD
Pilot TS controller.
Fault E501:
Pre-Adjustment
The frequency converter was faulty or
not programmed (replacement device),
so it had to be reprogrammed by the GD
Pilot TS controller.
Fault E502:
VSD Locked
An error occurred while the frequency
converter was being programmed.
Notify your local Gardner Denver
Technical Support.
Fault E503:
VSD Write Fault
An error occurred while the frequency
converter was being programmed.
Notify your local Gardner Denver
Technical Support.
Fault E504:
VSD Communication
Communication to frequency converter
disrupted, frequency converter not
responding.
Check:
Main contactor (Compressors with
PowerFlex 400 VSD only)
ModBus interface wiring
If no fault can be found, notify Gardner
Denver service engineer.
Fault E505:
VSD Stop Pressed
The red Stop button on the frequency
converter (VSD) was pressed while the
compressor was running.
Always switch the compressor off via the
GD PILOT controller.
Fault E506:
VSD EM-Stop Input
Compressors with PowerFlex 75x VSD
only:
While the GD Pilot TS controller has
detected a pressed Emergency Stop
button there was no corresponding
feedback from the VSD.
Check EM-Stop circuit.
This fatal fault cannot be reset. Re-
powering the compressor will run the
Setup Code procedure. See chapter 13.
Fault E507:
VSD Read Fault
An error occurred while reading data
from the frequency converter.
Notify your local Gardner Denver
Technical Support.
Fault E508:
VSD EM-Stop Input
Compressors with PowerFlex 75x VSD
only:
While the VSD has detected an
activated Emergency Stop button there
was no corresponding feedback from the
GD Pilot TS controller.
Check EM-Stop circuit.
This fatal fault cannot be reset. Re-
powering the compressor will run the
Setup Code procedure. See chapter 13.
Fault E509:
See VSD Display
Compressors with PowerFlex 75x VSD
only:
An unexpected fault code was received
from the VSD.
Read displayed fault code from VSD
display and notify your local Gardner
Denver Technical Support.
Fault E510:
Speed below min. Limit
Speed is below permissible minimum
rotational speed.
Notify your local Gardner Denver
Technical Support.
VS