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1. DESIGN PRECAUTIONS
Reference
Make sure to have the following safety circuits outside of the PLC to ensure safe system operation even during
external power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection circuit, an interlock circuit for
opposite movements (such as normal vs. reverse rotation), and an interlock circuit (to prevent damage to the
equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all outputs
are turned off. Also, when an error that cannot be detected by the PLC CPU occurs in an input/output control
block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
3) Note that the output current of the 24V DC service power supply varies depending on the model and the
absence/presence of extension blocks. If an overload occurs, the voltage automatically drops, inputs in the PLC
are disabled, and all outputs are turned off.
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
81
103
116
140
153
188
210
248
312
PLC FX3G-14MT/ES-A
PLC FX3G-60MT/ESS
PLC FX3G-40MR/ES-A
PLC FX3G-60MR/ES-A
PLC FX3G-14MR/ES-A
模擬量輸出擴展板 FX3G-1DA-BD
RS-422擴展板 FX3G-422-BD
PLC FX3G-40MT/ESS
模擬量輸入擴展板 FX3G-2AD-BD
擴展板 FX3G-8AV-BD
PLC FX3G-14MT/ESS
可編程控制器 FX3G系列
PLC FX3G-24MR/ES-A
PLC FX3G-24MT/ES-A
RS-485擴展板 FX3G-485-BD
PLC FX3G-60MT/ES-A
RS-232C擴展板 FX3G-232-BD
擴展板 FX3G-CNV-ADP
PLC FX3G-40MT/ES-A
PLC FX3G-24MT/ESS