Rockwell Automation GV3000/SE Operator Interface Module (OIM) User Guide - Manual (Page 49)

Using Quick Start to Program the Drive 5-9
If SENSORLESS is not selected, the value of this parameter is automatically set if
torque control self-tuning is performed successfully.
The PPR must be selected based on a 125 kHz maximum input frequency limitation.
The encoder PPR selection affects the minimum and the maximum operating speed in
RPM and also affects the speed range.
The maximum input frequency is determined by the formula:
Fmax = U.017 x U.001
60
where Fmax is the maximum frequency in pulses per second (125 kHz).
If you do not know the number of poles, see the software I/M for calculations.
ENCODER PPR (U.001)
Selects the number
of pulses per
revolution (PPR) of
the encoder being
used or selects
sensorless vector
control (SVC) if no
encoder is used. Parameter Range: 512,1024, 2048, 4096 PPR, SENSORLESS
Default Setting: 1024 PPR
Parameter Type: Configurable
!
ATTENTION: The setting of parameters U.001 (Encoder PPR), U.002
(Motor Poles), U.003 (Motor Nameplate Base Frequency), and U.005
(Motor Nameplate RPM) determines the motor manximum speed.
These parameters must be set by a qualitifed person who understands
the significance of setting them accurately. Failure to observe this
precaution could result in bodily injury.
ATTENTION: Do not use a 4096 PPR encoder with a 2-pole motor.
Overspeed and motor damage can result. Failure to observe this
precaution could result in bodily injury.
MOTOR POLES (U.002)
Identifies the number
of poles in the motor.
.
Parameter Range: 2, 4, 6, or 8 POLE MOTOR
Default Setting: 4 POLE MOTOR
Parameter Type: Configurable
!
ATTENTION: The setting of parameters U.001 (Encoder PPR), U.002
(Motor Poles), U.003 (Motor Nameplate Base Frequency), and U.005
(Motor Nameplate RPM) determines the motor manximum speed.
These parameters must be set by a qualitifed person who understands
the significance of setting them accurately. Failure to observe this
precaution could result in bodily injury.
ATTENTION: Do not use a 4096 PPR encoder with a 2-pole motor.
Overspeed and motor damage can result. Failure to observe this
precaution could result in bodily injury.