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Function 
Latch  
Option 
 
AOK 
 
SO1 
 
SO2 
 
SO3 
10  Power up reset 
No 
Open 
collector 
Open 
collector 
Open collector  Open collector 
11 Commutation 
failure Yes 
Open 
collector 
Low Low  Low 
* This indication can be used as a digital input for activating an external shunt regulator. 
Table  4-1: Dragonfly/Butterfly Status Indications 
  Notes: 
Without latch mode: 
The status indications are reset when the fault disappears. 
With latch mode: 
The Short, Over Temperature and Commutation Failure status indications are reset 
when the enable signal is temporarily removed from the enable input. 
Multiple faults
Only the reading of the first fault is reliable. Additional faults add on to the status 
outputs and the indication is therefore meaningless. 
 
 
Dragonfly/Butterfly Installation Guide 
Servo Control Operation  
MAN-DRBUIG (Ver. 1.1) 
 
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