Stopper Method 2 - Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual

Stopper method 2

The following shows an operation overview of the stopper method 2, one of the OPR methods.
Operation chart
Machine OPR start
OFF
([Cd.184] Positioning start signal)
OPR request flag
OFF
([Md.31] Status: b3)
OPR complete flag
OFF
([Md.31] Status: b4)
Deviation counter clear output
[Md.26] Axis operation status Standby
[Md.34] Movement amount
Not set
after near-point dog ON
[Md.20] Current feed value
Not set
[Md.21] Machine feed value
[Md.35] Torque limit stored value Not set
1.
The machine OPR is started. (The machine starts accelerating according to the setting of "[Pr.51] OPR acceleration time
selection" in the direction specified in "[Pr.44] OPR direction", and moves at the speed set in "[Pr.46] OPR speed" when
the acceleration is completed.)
2.
When the on state of the near-point dog is detected, the machine starts decelerating.
3.
The machine decelerates to the speed set in [Pr.47] Creep speed and moves at the creep speed after that. (At this time,
the torque must be limited. If the torque is not limited, the servomotor may be damaged in Step 4.)
4.
The machine presses the workpiece against the stopper at the creep speed and stops.
5.
After the stop and a zero signal is input, the positioning module stops outputting pulses and outputs a "Deviation counter
clear output" to the drive unit. (Deviation counter clear signal output time is set in [Pr.55].)
6.
After "Deviation counter clear" output finishes, the OPR complete flag ([Md.31] Status: b4) turns OFF→ON, and the OPR
request flag ([Md.31] Status: b3) turns ON→OFF.
V
[Pr.46] OPR speed
1. 2. 3. 4. 5. 6.
Zero signal
Torque limit enabled range
Torque limit
ON
Near-point dog OFF
ON
ON
OPR
0
Store traveled value
OPR torque limit value
Torque limit setting value
[Pr.47] Creep speed
Stop using stopper
t
ON
[Pr.55] Deviation counter clear signal output time
Standby
OP address
8 OPR CONTROL
81
8.2 Machine OPR
8