OM Centrif Micro ΙΙ-5 81
Fault
Code
Description Detailed Description of Fault / Possible Solutions
A current imbalance larger than the Current Imbalance Trip Level
parameter setting (PFN 05, P28) was present for longer than ten (10)
seconds.
Check motor wiring for cause of imbalance. (Verify dual voltage and 6
lead motors for correct wiring configuration).
F37
Current
Imbalance
Check for large input voltage imbalances that can result in large current
imbalances.
Ground current above the Ground Fault Trip level setting (PFN 06, P29)
has been detected for longer than 3 seconds.
Check motor wiring for ground faults.
F38
Ground Fault
F 38 Continued
Verify that the CTs are installed with all the White dots towards the input
line.
Motor current went below 10% of FLA while the starter was running.
F39
No Current at
Run
Check if load is still connected to starter
F40
Shorted / Open
SCR
A shorted or open SCR condition has been detected.
F41 Current at Stop Motor current was detected while the starter was not running.
F47
Stack Protection
Fault (stack
thermal
overload)
The D3 electronic power stack OL protection has detected an overload
condition.
A digital input has been programmed as a Bypass/2M Contactor
Feedback input and an incorrect bypass feedback has been detected for
longer than the Bypass Confirm time parameter setting (I/O 16, P54).
F48
Bypass /2M
Contactor Fault
Verify that the bypass contactor(s) are actually not damaged or faulty.
Low control power (below 90V) has been detected while running, by the
D3 controller.
Verify that the control power input level is correct especially during
starting when there may be significant line voltage drop.
Check control power transformer tap setting (if available).
Check control power transformer fuses (if present).
F50
Control Power
Low
Check wiring between control power source and starter.
Indicates that the D3 control board self-diagnostics have detected a
problem with one or more of the current sensor inputs.
F51
Current Sensor
Offset Error
Consult factory if fault persists.
F52
Burden Switch
Error
The burden switch settings were changed when starter was running.
Only change burden switches when starter is not running.
F60
External Fault on
DI#1 Input
DI#1 has been programmed as a fault type digital input and the input
indicates a fault condition is present.
F61
External Fault on
DI#2 Input
DI#2 has been programmed as a fault type digital input and input
indicates a fault condition is present.
F62
External Fault on
DI#3 input
DI#3 input has been programmed as a fault type digital input and input
indicates a fault condition is present.
F71
Analog Input
Level Fault Trip.
Based on the Analog Input parameter settings, the analog input level has
either exceeded or dropped below the Analog Input Trip Level setting (I/O
08,
P46
) for longer than the Analog Input Trip Delay time (I/O 09, P47).
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