Yaskawa DR2 Sigma Servo - Manual (Page 118)

3.3 Setting Up the Σ Servopack
105
3.3.3 Setting the Number of Encoder Pulses
1) To ensure that the Σ-series Servo System operates properly, set the type of the encoder
to be used and the number of encoder pulses per revolution in the following user
constants:
Cn-02 Bit 9
Encoder Type Selection Factory
Setting: 0
For Speed/Torque Control
and Position Control
Set the encoder type according to the servomotor type to be used.
After changing the memory switch setting, turn the power OFF, then ON.
Motor Type Encoder Type Preset Value
SGM-jjj31j
SGMP-jjj31j
Incremental encoder
0
SGM-jjjW1j
SGMP-jjjW1j
Absolute encoder
1
Cn-11
PULSNO
Number of
Encoder Pulses
Unit: Pulses
Per Revolution
Setting
Range:
Number of
Encoder
Pulses
Factory
Setting:
2048
For Speed/Torque
Control and
Position Control
Set the number of encoder pulses according to the servomotor type to be used. If this
user constant is set incorrectly, system operation cannot be guaranteed.
After changing the user constant setting, turn the power OFF, then ON.
Motor Type Number of Encoder Pulses Per Revolution Preset Value
SGM-jjj31j
SGMP-jjj31j
Incremental encoder: 2048 pulses per revolution
2048
SGM-jjjW1j
SGMP-jjjW1j
Absolute encoder: 1024 pulses per revolution
1024
3