
B-65270EN/05 2. SETTING αiS/αiF/βiS SERIES SERVO PARAMETERS
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• Calculate the reference counter capacity.
Reference counter capacity = 360 degrees/0.0001 degrees =
3,600,000
(About speed limit)
When the RCN223, RCN723, or RCN727 is used as a separate
detector, the maximum permissible speed that can be controlled is 938
min
-1
.
(*)
(See Appendix E.)
(*) The above maximum speed does not include hardware
limitations. For the maximum permissible speed of the detector
itself, refer to the specifications of the detector.
Setting the signal direction of the separate detector
When a serial type separate detector is used with its signals connected
in reverse directions, the following parameter must be used:
#7 #6 #5 #4 #3 #2 #1 #0
1960 (FS15i)
RVRSE
2018 (FS30i, 16i)
RVRSE (#0) The signal direction of the separate detector is:
1: Reversed.
0: Not reversed.
(5) Reference position return when a serial type separate detector is used as
an absolute-position detector
When a serial type separate detector is used as an absolute-position
detector, the phase-Z position must be passed once before a reference
position return is performed. Then, turn the CNC off then back on to
allow reference position return.
(This description does not apply if a detector that does not require
battery backup is in use.)
When reference position return is performed, adjust the deceleration
dog so that the grid-shifted reference position is not too near the
deceleration dog.
Encoder position
Reference position data
of the detector = 0
Position data from
the encoder
Start position of
reference position return
Direction of reference
position return
Deceleration dog
To be adjusted so that the grid-shifted reference
position is not too near the deceleration dog.
Reference counter capacity
Grid-shifted reference
position
Reference position not grid-shifted
Machine position
Grid shift amount
Reference counter