
B-65270EN/05 2. SETTING αiS/αiF/βiS SERIES SERVO PARAMETERS
- 39 -
[Setting flexible feed gear]
1977 (FS15i)
Flexible feed gear (numerator)
2084 (FS30i,16i)
1978 (FS15i)
Flexible feed gear (denominator)
2085 (FS30i,16i)
Set the flexible feed gear according to the equation below.
The number of pulses per detector rotation is as follows:
Detector Number of pulses per detector rotation
Amount of movement per motor revolution [deg]/
detection unit [deg]
CZi512S
500,000
Amount of movement per motor revolution [deg]/
detection unit [deg]
CZi1024S
1,000,000
(Equation for parameter calculation)
Amount of movement per motor revolution [deg]/
detection unit [deg]
Flexible feed gear (N/M) =
Number of pulses per detector rotation
[Setting number of velocity pulses]
1876 (FS15i)
Number of velocity pulses (PULCO)
2023 (FS30i,16i)
Set a value listed in the following table according to the detector used.
Detector Number of velocity pulses
CZi512S
4096
CZi1024S
8192
[Setting number of position pulses]
1891 (FS15i)
Number of position pulses (PPLS)
2024 (FS30i,16i)
Set a value listed in the following table according to the detector used.
Detector Number of position pulses
CZi512S
6250
CZi1024S
12500
[Setting reference counter capacity]
1896 (FS15i)
Reference counter capacity
1821 (FS30i,16i)
Set the number of pulses per motor revolution (detection unit) or a
fraction of the integer value indicating the number of pulses per motor
revolution.
(Example of parameter setting)
[System configuration]
• The Series 30i is used.
• An 88-pole/rev, synchronous built-in servo motor is used.
• The detector used is the CZi512S.
• The least input increment of the controller is 1/1000 deg.
• Gear ratio 1:1