Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX User Manual
Page 364

B-26
Control Block Diagrams
The Limiter/Scaler function takes input from Iq % (parameter 91), the
torque reference, and Flux Current (parameter 168) and performs
limit checks and scaling on the two values. The Limiter/Scaler
function outputs the synchronous (or electrical) values of the torque
command (Iq
e
) and the flux current (Id
e
).
These values, Iq
e
and Id
e
, are converted to stationary values. To
convert the values, the conversion routine also takes input from the
feedback device.
Once the values are converted to stationary values, they are sent to the
current regulator.
file:
Motor/Inverter
group:
Motor Constants
file:
Monitor
group:
Motor Status
file:
Motor/Inverter
group:
Motor Nameplate
Encoder Data
If the feedback
device is:
Then:
Encoderless
The value of Motor Frequency (parameter 89) is integrated to get
the proper units and then used for the conversion.
Encoder
The drive uses the values of Motor Poles (parameter 7) and
Encoder PPR (parameter8) to adjust the value coming from the
encoder. The value of Slip Gain (parameter 169) is integrated to
get the proper units and then added to the value from the
encoder.
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