Rockwell Automation 1333 Drive, 3/4-5HP, 230-575V Series D - Manual (Page 114)

Preventive Maintenance and
Troubleshooting Common Drive Problems
Appendix B
B-7
Auxiliary Interlock
DC Bus Neon Light
Drive Nameplate
Control and Signal Wiring Terminal Block
Power Terminal Block
Lock Switch
Figure BĆ2 -- 7Ă1/2Ć20ĂHP (5.5Ć15kW)
1. The motor will not run --
OH
is displayed.
Is ambient temperature above the rated limit of 505C? Are the cooling fins
clogged or is the heat sink dirty? For 7Ă1/2Ć20ĂHP (5.5Ć15ĂkW) units, is the
cooling fan rotating?
Lower the ambient temperature, clean the heat sink, or replace the cooling
fan.
No
Yes
Contact your nearest AĆB representative for application assistance.