3.2
Setting User Constants According to Host Controller
79
4) Set the pulse dividing ratio in the following user constant.
Cn-0A
PGRAT
Dividing Ratio Setting
Unit:
P/R
Setting
Range: 16
to No. of
Encoder
Pulses
Factory
Setting:
2048
For Speed/Torque
Control and Position
Control
Sets the number of output pulses for PG output
signals (PAO,
£
PAO, PBO and
£
PBO).
Pulses from motor encoder (PG) are divided by
the preset number of pulses before being output.
The number of output pulses per revolution is set in this user constant. Set this value ac-
cording to the reference unit of the machine or controller to be used.
The setting range varies according to the encoder used.
Motor Type
Number of Encoder Pulses Per Revolution
Setting Range
SGM-
jjj
31
j
SGMP-
jjj
31
j
Incremental encoder: 2048 pulses per revolution
16 to 2048
SGM-
jjj
W1
j
SGMP-
jjj
W1
j
Absolute encoder: 1024 pulses per revolution
16 to 1024
For the user constant Cn-0A, always turn the power OFF and then ON after chang-
ing the setting. This makes the new setting valid.
3
Servomotor
encoder
Servopack
Output terminals:
PAO (1CN-33)
£
PAO (1CN-34)
PBO (1CN-35)
£
PBO (1CN-36)
Frequency
dividing
Phase A
Phase B
Setting example:
Preset value: 16
1 revolution
