TECO TP03 PLC - Chapter 5 Wiring

Chapter 5 Wiring
Contents
5-0
Chapter 5 Wiring........................................................................................................ 5-1
1 Wiring .............................................................................................................. 5-1
2 Basic unit wiring.............................................................................................. 5-2
2.1 Wiring power supply and specification ................................................. 5-2
2.1.1 Input wiring at power supply terminal......................................... 5-2
2.1.2 Protection circuit:......................................................................... 5-3
2.2 Input wiring............................................................................................ 5-4
2.3 Output wiring......................................................................................... 5-5
3 Expansion unit wiring...................................................................................... 5-7
3.1 Input wiring for expansion unit.............................................................. 5-7
3.2 Output wiring for expansion unit........................................................... 5-8
4 Wiring consideration........................................................................................ 5-9
4.1 Wiring consideration for Input power terminal ..................................... 5-9
4.1.1 When Built in DC24V power supply share Common terminal with
External power ............................................................................ 5-9
4.2 Wiring consideration for Input terminal: ............................................... 5-9
4.2.1 Wiring consideration for different Input devices (sensor/ switch…)
................................................................................................... 5-10
4.2.2 Leakage current of Input component ..........................................5-11
4.3 Output terminal wiring consideration:................................................. 5-12
4.3.1 Surge current from Indicator load:............................................. 5-12
4.3.2 Surge voltage of inductive load ................................................. 5-12
4.3.3 Driving a light load .................................................................... 5-13
4.3.4 Lifespan of relay ........................................................................ 5-13
4.3.5 Wiring consideration for TP03 HT type PLC ............................ 5-13
5 Solving noise problem ................................................................................... 5-14
5.1 Power source noise .............................................................................. 5-14
5.2 Solving thunder stroke problem........................................................... 5-15
5.3 Anti-Noise for Expansion Cable .......................................................... 5-16
5.4 Anti-Noise for I/O Wiring.................................................................... 5-16