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Chapter 6 Installation And Wiring; Before Using The I/o Modules; Input Modules - Mitsubishi Electric NZ2GN2B1-32D User Manual

Programmable controller cc-link ie tsn remote i/o module.
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6
INSTALLATION AND WIRING
This chapter describes the installation and wiring of the I/O module.
6.1

Before Using the I/O Modules

Input modules

Precautions common to all input modules
■Number of simultaneous ON points
The number of input points that can be turned on at the same time varies depending on the input voltage and ambient
temperature. Refer to the maximum number of simultaneous input points of the specifications of each input module. (
Page 17 Input module,  Page 35 I/O combined module)
Precautions when using the DC input module
■Measures against back EMF
When connecting an inductive load, connect a diode in parallel with the load. Use the diode that satisfies the following
conditions:
• A reverse breakdown voltage is ten times as high as the circuit voltage or more.
• A forward current is twice as high as the load current or more.
Positive common type
IN
Inductive
load
COM
■Input response time
For the input module and I/O combined module, the input response time can be set. ( Page 76 Input Response Time
Setting Function)
In a circumstance where noise tends to occur, the noise in an input can be reduced by making the input response time longer,
which makes the input status more stable.
The factory default input response time is 1ms.
6 INSTALLATION AND WIRING
6.1 Before Using the I/O Modules
Negative common type
IN
Inductive
load
COM

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