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Safety Inputs
Section 5-2
5-2
Safety Inputs
5-2-1
Overview
The NE1A-SCPU01(-V1) is equipped with 16 safety input terminals.
The NE1A-SCPU02 is equipped with 40 safety input terminals.
By selecting the setup and wiring based on the types of input devices to be
connected or the safety level to be achieved, the NE1A-series Controller can
flexibly handle various applications. For example, an NE1A-series Controller’s
safety inputs can be used as described below.
Connecting to Contact Output Safety Devices
The NE1A-series Controller’s test output signal (a pulse output) is input by
connecting to a contact output device. Input signal line errors can then be
detected by inputting the test output signal.
• Short circuits to the power supply line (positive side)
• Earth faults
• Short circuits between input signals
Connecting Semiconductor Output Safety Devices
The output from a 24-VDC semiconductor, such as the OSSD output from a
Light Curtain, is input. Errors in the OSSD output signal line (i.e., the NE1A-
series Controller’s input signal line) is detected at the external connection
device.
T0
T1
IN1
IN0
11
21
12
22
IN1
IN0
OSSD1
Sourcing
output
(PNP)
OSSD2
Sourcing output (PNP)
Light
Curtain
Summary of Contents for NE1A-SCPU01 - 07-2009
Page 3: ...iv...
Page 9: ...x TABLE OF CONTENTS...
Page 11: ...xii...
Page 15: ...xvi...
Page 70: ...35 Installation Section 3 1 Top Top Bottom Bottom...
Page 72: ...37 Installation Section 3 1 3 1 3 Dimensions and Weight Dimensions NE1A SCPU01 V1...
Page 85: ...50 Wiring Section 3 2...
Page 123: ...88 Explicit Message Communications Section 4 7...
Page 141: ...106 Safety Outputs Section 5 4...
Page 257: ...222 Connection Status Tables Section 10 8...
Page 261: ...226 NE1A series Controller Replacement Section 11 2...
Page 264: ...229 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 266: ...231 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 267: ...232 Appendix A Local Output Setting Example...
Page 269: ...234 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 270: ...235 Appendix A Local Output Setting Example...
Page 273: ...238 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 275: ...240 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 276: ...241 Appendix A Local Output Setting Example...
Page 289: ...254...
Page 293: ...258 Index...