354
Servo Lock and Unlock
Section 6-14
If the machine parameters are set for a wiring check to be performed, it will be
performed at powerup and with the first servo lock. If everything is normal, the
wiring check will not be performed with the next servo lock.
Servo lock and unlock are executed from the PLC Interface Area.
PLC Interface Area
6-14-1 Timing Charts
The following timing charts show the servo lock and servo unlock functions
when the brake signal is set and the wiring check is enabled.
Servo Lock
Servo Unlock
For timing charts with and without the brake signal and wiring check set, refer
to the explanations of servo lock and unlock in
5-3 PLC Interface Area
.
Name
MCU
Model
Word
Bit
Description
X axis
Y axis
Z axis
U axis
Servo Lock
MC421
MC221
n+11
n+7
n+13
n+9
n+15
---
n+17
---
09
↑
: Begin servo lock
Servo Unlock
10
↓
: Begin servo unlock
CPU Unit to
MC Unit
MC Unit to
external device
MC Unit to CPU Unit
Servo Lock
(n+7, 09; n+11, 09)
Command output to
servo driver
Brake signal output
Wiring check pulse output
Retain until Servo Lock Flag turns ON. The Busy Flag
will not turn OFF until the wiring check is completed,
even if the servo lock is turned OFF.
Tb0ff: Brake OFF time (system parameters)
Ts: Wiring check time (system parameters)
2) After Tboff, the wiring check is started.
3) If the wiring check pulses are output in the CW
direction, and travel is normal in that direction
within Ts, then the wiring check will be performed
in the CCW direction. The wiring check is judged
normal if the positioning is in-position within Ts.
4) The Busy Flag is then turned OFF.
Servo Lock ON Flag
(n+22, 02; n+38, 02)
Busy Flag
(n+22, 01; n+38, 01)
Positioning Completed
Flag
(n+22, 05; n+38, 05)
1) When a position loop is created by the turning
ON of the Servo Lock Bit from the CPU Unit, the
command output and brake signal are turned ON
simultaneously (brake release).
Servo Unlock
(n+7, 10; n+11, 10)
Command output to
servo driver
Brake signal output
Servo Lock ON Flag
(n+22, 02; n+38, 02)
Busy Flag
(n+22, 01; n+38, 01)
Positioning Completed
Flag
(n+22, 05; n+38, 05)
CPU Unit to
MC Unit
MC Unit to
external device
MC Unit to
CPU Unit
Leave servo unlock ON until Servo Lock ON Flag turns OFF.
Tbon: Brake ON time
1) The brake signal is turned OFF (brake
enabled)b
y
the Servo Unlock Bit from the CPU Unit.
2) After Tbon, the command output to the servo
driver is turned OFF when the position loop is
released.
Содержание CS1W-MC221 -
Страница 1: ...Motion Control Units Cat No W359 E1 04 CS1W MC221 V1 421 V1 OPERATION MANUAL ...
Страница 2: ...CS1W MC221 V1 421 V1 Motion Control Units Operation Manual Revised February 2008 ...
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Страница 11: ...xii ...
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Страница 19: ...xx ...
Страница 27: ...xxviii Conformance to EC Directives 6 ...
Страница 133: ...106 Installation Section 2 2 2 2 4 Dimensions CS1W MC421 CS1W MC221 ...
Страница 173: ...146 Connecting Peripheral Devices Section 2 7 ...
Страница 227: ...200 Command Area Section 3 6 ...
Страница 351: ...324 Interface Specifics Section 5 4 ...
Страница 513: ...486 Absolute Encoder Interface Specifications Section 9 7 ...
Страница 575: ...548 Error Log Section 12 6 ...
Страница 589: ...562 Performance Appendix A ...
Страница 655: ...628 Control Bit Flag Timing Charts Appendix E ...
Страница 683: ...656 Origin Search Patterns Appendix F ...
Страница 685: ...658 Encoder Divider Rate and Rotation Speed for OMRON Servo Drivers Appendix G ...