Rockwell Automation 20Y PowerFlex Active Front End - Manual (Page 100)

100 Rockwell Automation Publication 20Y-UM001E-EN-P - July 2014
Chapter 4 Programming and Parameters
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Mode
085 [Droop]
Sets the droop as % of active current reference for current balancing when AFEs are used in parallel
independent mode. It affects DC bus voltage if enabled. Recommended value for parallel AFEs is 5%. Default:
Min/Max:
Units:
0.00%
0.00/100.00%
0.01%
086 [PWM Synch]
Sets synchronization to reduce the circulating current between parallel connected AFEs, when they
are connected to the same DC bus and are fed from the same incoming power source without an
isolation transformer. In this case, parameter 085 [Droop] must be set to 5% in all AFEs, and this
parameter 086 [PWM Synch] must be set to ‘1’ (Enabled). Default:
Options:
0
0
1
Disabled
Disabled
Enabled
087 [Start Up Delay]
Sets a starting delay when Run command is given. When programming different delay to parallel
AFEs, the AFEs start in sequence. Default:
Min/Max:
Units:
0.00 sec
0.00/300.00 sec
0.01 sec
Fil
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No. Parameter Name & Description Values