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Altivar drive is showing dCb on the display.

Published date: 20 May 2019

Issue:  
Altivar drive is showing dCb on the display.
 
Product line: 
Altivar drive families: ATV12, ATV28,  ATV312, ATV32, ATV61, ATV71. 
 
Environment: 
All models, all serial numbers.
 
Cause: 
DC Injection Braking.
 
Resolution: 
This is a normal drive state.  It is indicating the drive is injecting DC current into the motor to slow the motor down.  This typically appears on deceleration or at the end of the deceleration ramp.  On some drives, DC Injection can be turned on using a Logic Input. 
 

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