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What would cause an bOF or brake resistor overload fault on the ATV630 and ATV930 Process drives?

Published date: 25 September 2018

Issue:
What would cause an bOF or brake resistor overload fault on the ATV630 and ATV930 Process drives?

Product Line:
ATV630 and ATV930 Process drives

Environment:
All 

Cause:
Parameter setting of the braking resistor not correct (brtC, brV, brP)

Resolution:
 
Principle:
The thermal model of the braking resistor has detected and overload.The themal state of the BR can be monitored with the parameter tHb.

Probable cause:
- parameter setting of the braking resistor not correct (brtC, brV, brP)

Remedies:
- check the nominal power of the braking resistor.
- verify the BR parameters brP, brV, brtC
- check with SoMove service section the thermal states TH1R / TH2R / TH3R
- check the thermal state parameter tHb [Braking Resistor monitoring]

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