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Epsilon Eb and EN Drives Reference Manual
Bus Voltage Group
Low DC Bus Enable - Epsilon Only
This parameter’s default setting is enabled. When enabled, the drive will detect a low DC bus 
at 60 VDC and will log a Low DC Bus Fault if a power down is not completed after the low 
DC bus is detected. Setting this to disabled will disable the Low DC Bus Voltage Fault. This 
will allow the drive to operate at a DC bus voltage below 60 VDC as long as the logic power 
is supplied by the A.P.S. (Alternate Power Supply).
 Figure 50: Epsilon Bus Voltage View
Encoder State Fault Enable
This parameter’s default setting is enabled. When enabled, the drive will detect encoder state 
faults. Refer to Fault Codes in the Diagnostic and Troubleshooting section of this manual. The 
drive will not detect Encoder State faults when the fault is disabled. Disabling encoder faults 
is necessary for some types of programable encoders where the state transitions are not 
always deterministic.
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