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VFD68 Variable Frequency Drives
75
Table 80: Motor Current is Too Large
Check
Points
Possible Cause
Action
Load
The fan motor stalls and error code OL appears
on the display.
Ensure that combination of motors connected in parallel
does not exceed the VFD68 drive’s output current
rating.
Table 81: Unable to Write Parameter Setting
Check
Points
Possible Cause
Action
Input
Signal
P. 77 should be set to 2.
Verify that P.77 is set to 2.
Param.
Setting
P.296 and P.297 may be set for Password Lock.
Check with your local equipment supervisor to verify the
Password Lock restriction level.