Mitsubishi FX3U-20SSC-H - 8.3 Manual pulse generator operation

8 Manual Control
8.1 Mechanical Zero Return Control
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FX3U-20SSC-H Positioning Block User's Manual
Note
• The zero return command is not accepted if the zero-point pass signal servo status is OFF.
Before executing zero return, be sure to rotate the servomotor at least once to turn the zero-point pass
signal ON. The zero-point pass signal turns ON when the motor passes the motor reference position signal
(Z-phase).
To execute zero return immediately after power-on, specify "1: Motor Z-phase pass unnecessary after
power-on" (default setting) at servo parameter function selection C-4. With this setting, the zero-point pass
signal turns ON even if the motor does not pass the zero-point (Z-phase).
• With the simultaneous start flag ON, the X-axis mechanical zero return command simultaneously starts the
X and Y-axes mechanical zero return operation.
(The 20SSC-H ignores the Y-axis mechanical zero return command.)
DOG position
Install the DOG at a position far enough from the stopper for the work piece to decelerate to the zero-point
return speed (creep).
2. Changing the zero return speed
Use the override function or operation speed change function to change the zero return speed (high speed).
However, the speed does not change when the operation speed change disable flag is ON.
→ For the override function, refer to Subsection 7.6.1
→ For the operation speed change function, refer to Subsection 7.6.2
BFM Number
Data type
X-axis Y-axis
DOG signal logic of servo
amplifier
External input selection BFM #14044 b9 BFM #14244 b9 Positioning parameters
Acceleration time 2 (Ver. 1.30 or later) BFM #14108 BFM #14308 Positioning parameters
Deceleration time 2 (Ver. 1.30 or later) BFM #14110 BFM #14310 Positioning parameters
X-DOG - - Input terminal (20SSC-H)
Y-DOG - - Input terminal (20SSC-H)
Mechanical zero return
command
Operation command 1 BFM #518 b6 BFM #618 b6 Control data
Simultaneous START flag Operation command 1 BFM #518 b10 Control data
Acceleration/deceleration time
change command
(Ver. 1.30 or later)
Operation command 2 BFM #519 b5 BFM #619 b5 Control data
Current address (user) BFM #1,#0 BFM #101,#100 Monitor data
Current address (pulse) BFM #3,#2 BFM #103,#102 Monitor data
Zero return complete Status information BFM #28 b3 BFM #128 b3 Monitor data
Positioning completion Status information BFM #28 b6 BFM #128 b6 Monitor data
Zero phase passed Servo status BFM #63 b0 BFM #163 b0 Monitor data
Function selection C-4
Servo parameters
(Advanced setting)
BFM #15080 BFM #15280 Servo parameters