Rockwell Automation WebPak 3000 DC Drive Application Workbook Version 1.1 - Manual (Page 40)

5-6 WebPak 3000 DC Drive Application Workbook, Version 1.1
▲ Refer to the WebPak 3000 software manual (D2-3444) for the
descriptions of the following parameters and adjust them to tune the
field control loop if necessary.
•
FLD WEAKEN THRESHOLD (P.518).
•
FLD WEAKEN LEAD FREQ (P.520).
•
FLD WEAKEN PROP GAIN (P.519).
5.4 The Field Regulator
The field current regulator operates closed loop with a PI amplifier block. FIELD DELTA
(P.588) is the output of the PI block and sets the firing angle of the field phase firing
logic which, in turn, sets the voltage output level of the field power bridge.
þ
To modify the lead frequency and gain of the FIELD AUTO WEAKEN PI block
(recommended for stable operation of the field current regulator PI block):
▲
Set FIELD PI PROP GAIN (P.514) to tune for stable operation of the spillover
regulator PI block.
▲
Set FIELD PI LEAD FREQ (P.515) to tune for stable operation of the spillover
regulator PI block.
Range: 0 to 120% of P.009 P.518 = %
Range: 0.00 to 56.54 RAD / S P.520 = RAD / S
Range: 0.01 to 128.00 P.519 =
Range: 0.10 to 128.00 P.514 =
Range: 0 to 282.70 RAD / S P.515 = RAD / S