Mitsubishi Electric MELSEC iQ-R RD75P4, Руководство пользователя

Страница: 49 / 598

2 OPR CONTROL
2.2 Machine OPR
47
2
Stopper method 2
The following shows an operation overview of the stopper method 2, one of the OPR methods.
Operation chart
(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.
(The torque must be limited for this operation. Otherwise 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 RD75 stops outputting pulses and produces 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 is completed, OPR complete flag ([Md.31] Status: b4) turns on and OPR request flag ([Md.31] Status: b3) turns off.
t
ON
OFF
ON
OFF
OFF
ON
0
V
OFF
Md.31
Md.31
Md.26
Md.34
Md.35
Md.20
Md.21
Pr.46
Pr.47
Pr.55
ON
(1) (2) (3) (4) (5)(6)
OPR speed Creep speed
Torque limit valid range
Torque limit
Standby
OPR Standby
Inconsistent
Movement amount
after near-point dog
ON
Inconsistent
A value of the movement amount is stored.
OP address
Inconsistent Torque limit setting value OPR torque limit value
Current feed value
Near-point dog
Stops with a stopper.
Zero signal
Deviation counter clear output
OPR request flag
OPR complete flag
Torque limit stored
value
Machine feed value
Machine OPR start
(Positioning start signal)
[Y10, Y11, Y12, Y13]
Status: b3
Status: b4
Axis operation status
Deviation counter clear signal
output time