Rockwell Automation 25B PowerFlex 520-Series Adjustable Frequency AC Drive User Manual - Manual (Page 122)

122 Rockwell Automation Publication 520-UM001G-EN-E - September 2014
Chapter 3 Programming and Parameters
Advanced Program Group (continued)
A535 [Motor Fdbk Type] Related Parameter(s): A537
Stop drive before changing this parameter.
PowerFlex 525 only.
Selects the encoder type.
Allowable Control Modes Hardware Inputs
Options 0 “None” (Default) For all motor types –
1 “Pulse Train” All except Vector [DigIn TermBlk 07]
2 “Single Chan” All except Vector
Optional incremental encoder card
(catalog number 25-ENC-1)
3 “Single Check” All except Vector
4 “Quadrature” For all motor types
5 “Quad Check” For all motor types
PF 525
ATTENTION: The loss of analog input, encoder or other feedback may cause unintended speed or motion. Take appropriate precautions to guard against
possible unintended speed or motion.
A536 [Encoder PPR]
PowerFlex 525 only.
Specifies the encoder Pulses Per Revolution (PPR) when an encoder is used.
Values Default: 1024 PPR
Min/Max: 1/20000 PPR
Display: 1 PPR
PF 525
Motor Control Mode Recommended Minimum Encoder PPR
Sensorless Vector Control (SVC) 42 x (number of poles/2) [Speed range 100:1] : 84 PPR (4 pole motor)
Velocity Vector Control (VVC) 500 x (number of poles/2) [Speed range 1000:1] : 1000 PPR (4 pole motor)
The maximum encoder pulse is 250 kHz.
A537 [Pulse In Scale] Related Parameter(s): t065 , t067 , A535
Sets the scale factor/gain for the Pulse Input when t065 or t067 [DigIn TermBlk xx] is set to 52 “Pulse Train”, or A535 [Motor Fdbk Type] is set to 1 “Pulse Train”.
Input frequency (Hz) / Pulse in Scale = Output frequency (Hz)
Values Default: 64
Min/Max: 0/20000
Display: 1
A538 [Ki Speed Loop]
PowerFlex 525 only.
Sets the I-gain used in the PI calculation of the speed loop when feedback is used.
Values Default: 2.0
Min/Max: 0.0/400.0
Display: 0.1
PF 525
A539 [Kp Speed Loop]
PowerFlex 525 only.
Sets the P-gain used in the PI calculation of the speed loop when feedback is used.
Values Default: 5.0
Min/Max: 0.0/200.0
Display: 0.1
PF 525