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Reaction Time
Section 9-4
9-4
Reaction Time
9-4-1
Reaction Time Concepts
The reaction time is the time required to stop machine operation in a worst-
case scenario considering the occurrence of faults and failures in the safety
chain .
The reaction time is used to calculate the safety distance.
The reaction time is calculated for each safety chain. Some typical safety
chains are shown below.
1. Local Input - Local Output
2. Remote Input - Local Output
3. Local Input/Remote Output
4. Remote Input/Remote Output
Note
There is no I/O response time required in the reaction time when operation is
normal. With the reaction time, the output shutoff time will be maintained even
if there are faults or failures in devices or the network.
9-4-2
Calculating the Reaction Time
Elements of the Reaction Time
The elements of the reaction time are given below for each safety chain.
1. Local Input – Local Output
2. Remote Input – Local Output
Safety
sensor/switch
NE1A Series
Actuator
Network
Safety I/O
Terminal
NE1A Series
Actuator
Safety
sensor/switch
NE1A Series
Actuator
Network
Safety I/O
Terminal
Safety
sensor/switch
NE1A Series
Actuator
Network
Network
Safety I/O
Terminal
Safety
sensor/switch
Safety I/O
Terminal
NE1A Series
Safety sensor/
switch
Actuator
Sensor/switch
reaction time
Local input/
local output
reaction
times (A)
Actuator
reaction time
NE1A Series
Safety I/O Terminal
Actuator
Network
reaction
time (G)
Input
reaction
time (E)
Sensor/switch
reaction time
Remote input/
local output
reaction
times (B)
Actuator
reaction time
Safety sensor/
switch
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...