Encoder Ppr - Reliance electric GV3000/SE Instruction Manual

U.001
Parameter Range:
1024 = 1024 PPR
2048 = 2048 PPR
4096 = 4096 PPR
Default Setting: 2048 (with P.049 set for 'European default setting')
1024 (with P.049 set for 'American default setting')
Type: Configurable (at standby only)
Refer to: U.008 Torque Self-Tune Enable
Description: This parameter selects the number of pulses per revolution (PPR) of the encoder
being used or selects sensorless vector control (SVC) if no encoder is used.
If SE is not selected, the value of this parameter is automatically set when self-
tuning (U.008) is successful.
ATTENTION: The setting of parameters U.001 (Encoder PPR), U.002 (Motor
Poles), U.003 (Motor Nameplate Base Frequency), U.005 (Motor Nameplate
RPM), and U.017 (Motor Top Speed) determines the motor maximum speed.
WARNING: Do not use a 4096 PPR tachometer with a 2-pole motor. Overspeed
and motor damage can result. Failure to observe this precaution could result in
bodily injury.
If an encoder is used, select the PPR based on a 125 kHz maximum input frequency
limitation. The encoder PPR selection affects the minimum and the maximum
operation speed in RPM and also affects the speed range.
The maximum input frequency can be calculated by the formula:
F
U.001
If U.001= SE, the drive operates using sensorless vector control (SVC). Unless
specified, all vector parameters apply to SVC. Refer also to the following parameters
which specifically support SVC:
• U.022 Motor Nameplate Horsepower
• U.023 Low Bus Fault Avoidance Enable
• U.030 SVC Slip Adjust
• U.031 SVC Sync Direction
• U.032 SVC Flux Current Regulator Gain
6 - 6
6 - VECTOR REGULATION MODE

Encoder PPR

512 = 512 PPR
SE = No encoder connected. Operate in sensorless vector control (SVC).
U.017 x U.001
=
max
60
7 500 000
=
max
U.017
Permitted Maximum speed (U.017) for PPR
7200 RPM
7200 RPM
3600 RPM
1800 RPM
where Fmax is the maximum encoder frequency in Hz.
GV3000/SE 49'1329 e