User Manual
Preventive Maintenance and
Troubleshooting Common Drive Problems
Appendix B
B-12
3. The
motor generates an excessive amount of heat -- No fault is displayed.
Is full load demanded continuously at low frequency? An
OL trip occurs when the load current is greater than 140% for one
minute.
Lighten
the load or resize the drive and motor to meet your application.
Yes
Is the motor operating above the full load current?
No
The
load is beyond the motor capacity
. Check the mechanical installation.
If
the
motor and drive are undersized, resize them for your application.
Yes
No
Check the motor and wiring connections for an open phase condition.
4. The
drive will not reverse in local control -- No fault is displayed.
Yes
No
Has
the drive been programmed to lockout reverse operation (Parameter 10
set
to 1)?
Set Parameter 10 to 0.
Contact your nearest AB representative for application assistance.