137
Failsafe Circuits
Section 2-4
Stopping the Motor with Zones
Zones
Zones can be set in the Zone Parameters in the System Parameters so that a
Zone Flag will be turned ON in the CPU Unit when the motor is within a zone.
Refer to
Zone Parameters
on page 167 for details.
Failsafe Circuits
First, the zones are set in the System Parameters and then the ladder pro-
gram is written to stop the motor when a Zone Flag turns ON. In the following
example, the X-axis and Y-axis Zone Flags are monitored in the ladder dia-
gram. If both flags are ON at the same time, the CPU Unit uses an external
output to activate a dynamic brake and stop motion.
Zone
External
output
Ladder
program
execution
MC Unit
Servo
driver
Voltage
output
Servomotor
CPU Unit
Servomotor
Voltage
output
Servo
driver
X-axis Zone Flag
Y-axis Zone Flag
X axis
Y axis
X axis
Y axis
Summary of Contents for CS1W-MC221 -
Page 1: ...Motion Control Units Cat No W359 E1 04 CS1W MC221 V1 421 V1 OPERATION MANUAL ...
Page 2: ...CS1W MC221 V1 421 V1 Motion Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 11: ...xii ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 27: ...xxviii Conformance to EC Directives 6 ...
Page 133: ...106 Installation Section 2 2 2 2 4 Dimensions CS1W MC421 CS1W MC221 ...
Page 173: ...146 Connecting Peripheral Devices Section 2 7 ...
Page 227: ...200 Command Area Section 3 6 ...
Page 351: ...324 Interface Specifics Section 5 4 ...
Page 513: ...486 Absolute Encoder Interface Specifications Section 9 7 ...
Page 575: ...548 Error Log Section 12 6 ...
Page 589: ...562 Performance Appendix A ...
Page 655: ...628 Control Bit Flag Timing Charts Appendix E ...
Page 683: ...656 Origin Search Patterns Appendix F ...
Page 685: ...658 Encoder Divider Rate and Rotation Speed for OMRON Servo Drivers Appendix G ...