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Command Reference: Function Blocks
Section 6-5
Override Function
The Override function can turn ON the safety output ON even though the light-
interruption signal of the light curtain is inactive. If a workpiece gets jammed
during transit as shown in the following diagram, the system cannot be
returned to normal operation without forcibly removing the workpiece. In a sit-
uation like this, the Override function can be used to move the workpiece out
of the light curtain detection zone.
MS11: Muting sensor connected to Muting Signal 11
MS12: Muting sensor connected to Muting Signal 12
Override Sequence
1. In the block diagram above, the Output Enable signal is OFF.
2.
When the Override Input goes ON, the Override function starts and the
Override Status goes ON. As long as the Override inputs are ON, the mut-
ing status is
forcibly enabled, and both the Muting Status and Output Enable signals are
ON.
3.
When the workpiece moves to the right until it is no longer detected by the
MS12, the muting status forced by the Override function will be cleared,
and both the Muting Status and Override Status will go OFF.
■
Override Start and Stop Conditions
■
Start Conditions
If the following conditions are met, the Override function will start and the Out-
put Enable, Muting Status, and Override Status will all go ON.
1. At least one Muting Signal is ON.
2.
The light curtain is inactive (obstructed).
3.
The Output Enable is OFF.
4.
The Override Input is ON (when set as a Single input) or Active (when set
as Dual inputs).
Light curtain
MS11
Reflected
Board
MS12
WORK
Reflected
Board
Содержание NE1A-SCPU01 - 07-2009
Страница 2: ...NE1A Series Safety Network Controller NE1A SCPU01 V1 SCPU02 Operation Manual Revised September 2006...
Страница 3: ...iv...
Страница 9: ...x TABLE OF CONTENTS...
Страница 11: ...xii...
Страница 15: ...xvi...
Страница 33: ...xxxiv Unit Versions of NE1A series Controllers 7 Click the OK Button This completes the procedure...
Страница 70: ...35 Installation Section 3 1 Top Top Bottom Bottom...
Страница 72: ...37 Installation Section 3 1 3 1 3 Dimensions and Weight Dimensions NE1A SCPU01 V1...
Страница 73: ...38 Installation Section 3 1 NE1A SCPU02 Weight Model Weight NE1A SCPU01 V1 460 g max NE1A SCPU02 690 g max...
Страница 85: ...50 Wiring Section 3 2...
Страница 123: ...88 Explicit Message Communications Section 4 7...
Страница 141: ...106 Safety Outputs Section 5 4...
Страница 257: ...222 Connection Status Tables Section 10 8...
Страница 258: ...223 SECTION 11 Maintenance and Inspection 11 1 Inspection 224 11 2 NE1A series Controller Replacement 225...
Страница 261: ...226 NE1A series Controller Replacement Section 11 2...
Страница 264: ...229 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Страница 266: ...231 Appendix A Programming Example Local Input and Test Output Setting Example...
Страница 267: ...232 Appendix A Local Output Setting Example...
Страница 269: ...234 Appendix A Programming Example Local Input and Test Output Setting Example...
Страница 270: ...235 Appendix A Local Output Setting Example...
Страница 273: ...238 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Страница 275: ...240 Appendix A Programming Example Local Input and Test Output Setting Example...
Страница 276: ...241 Appendix A Local Output Setting Example...
Страница 289: ...254...
Страница 293: ...258 Index...