Mitsubishi FX3U-20SSC-H - DOG Type Mechanical Zero Return

8 Manual Control
8.1 Mechanical Zero Return Control
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FX3U-20SSC-H Positioning Block User's Manual
1
Introduction
2
System configuration
3
Example Connection
4
Installation
5
Wiring
6
Memory configuration and data
7
Before starting positioning control
8
Manual control
9
Positioning Control
10
Table Operation
8.1.2 DOG type mechanical zero return
With the DOG type mechanical zero return, the 20SSC-H sets the zero-point position after the module stops
with a near-point DOG signal and servo motor zero-point signal. Use the DOG search function to execute the
DOG type mechanical zero return arbitrarily.
→ For the zero return interlock function, refer to Subsection 7.9.10
→ For details on the table operation, refer to Chapter 10
→ For the parameters, control data and monitor data, refer to Chapter 11
1. Operation
Zero return starts as follows, at the rising edge (OFF → ON) of the mechanical zero return command.
1) At the rising edge (OFF → ON) of the mechanical zero return command, the work piece moves in the
zero return direction at the zero return speed (high speed).
2) At the DOG input, the 20SSC-H decelerates the work piece to the zero return speed (creep).
3) The 20SSC-H counts zero-point signals after passing the zero-point signal count start timing.
4) After counting the specified number (zero-point signal numbers), the 20SSC-H stops the work piece.
5) After calibrating the zero-point, the current address is set as the mechanical zero-point address in
positioning parameters.
6) The 20SSC-H turns the positioning completion flag ON and sets (turns ON) the zero return complete flag.
→ For the parameters, control data and monitor data, refer to Chapter 11
BFM Number
Data type
X-axis Y-axis
Zero return direction Operation parameter 1 BFM #14000 b10 BFM #14200 b10 Positioning parameters
DOG input logic (20SSC-H) Operation parameter 1 BFM #14000 b12 BFM #14200 b12 Positioning parameters
Zero-phase signal count start
timing
Operation parameter 1 BFM #14000 b13 BFM #14200 b13 Positioning parameters
Zero return interlock setting
enabled/disabled
Operation parameter 2 BFM #14002 b2 BFM #14202 b2 Positioning parameters
Maximum speed BFM #14009,#14008 BFM #14209,#14208 Positioning parameters
Acceleration time BFM #14018 BFM #14218 Positioning parameters
Deceleration time BFM #14020 BFM #14220 Positioning parameters
Zero return speed (high speed) BFM #14025,#14024 BFM #14225,#14224 Positioning parameters
Zero return speed (creep) BFM #14027,#14026 BFM #14227,#14226 Positioning parameters
Mechanical zero-point address BFM #14029,#14028 BFM #14229,#14228 Positioning parameters
Zero signal count BFM #14030 BFM #14230 Positioning parameters
DOG
ON
ON
OFF
OFF
OFF
ON
1)
Speed
Acceleration time
Deceleration time
Maximum speed
Mechanical zero
point address
2)
4)
Zero return speed
(high speed)
Zero return speed (creep)
Zero point signal
Time
Mechanical zero return command
Positioning completion
Zero return completion
Current address (user)
Current address (pulse)
The travel value
Mechanical zero point address