GE 760-P1-G1-S1-LO-A10-R On site interface module
With this input-output table, electricians who understand the operation process or the ladder diagram of this equipment can open the 760-P1-G1-S1-LO-A10-R for maintenance. But for those electricians who are not familiar with the operation process and cannot read the ladder diagram, 760-P1-G1-S1-LO-A10-R needs to draw another table: PLC input and output logic function table.
This table clarifies the logical correspondence between input circuits (triggering components, related components) and output circuits (performing components) in most operational processes.
Practice has proven that if you can proficiently use the input-output correspondence table and input-output logic function table, 760-P1-G1-S1-LO-A10-R can easily repair electrical problems without drawings.
PLC self fault diagnosis:
Generally speaking, PLCs are extremely reliable equipment with a low failure rate, but external factors can also cause PLC damage.
(1) A nearby switch with a 220V homework power supply shared a 4-core cable with the two input PLC signal contacts and the 220V power line of the nearby switch. The nearby switch was damaged once, and the electrician mistakenly adjusted the zero line of the power supply to the common line of the input PLC during replacement, resulting in the burning of three PLC input points during power transmission.
(2) The zero line of the primary system power transformer was suspended due to corrosion, causing the PLC220V power supply to rise to 380V and burn out the power module at the bottom of the PLC. During the later rectification, a 380/220V isolation control transformer was added.
(3) PLC outputs common terminal labels of 1L, 2L, etc. When the operating computer is ACL1N, it indicates that the+24V power supply is L+M, which indicates a simple mistake for beginners or those with limited experience. If L+M is mistakenly used as a 220V power terminal, it will burn out the PLC24V power supply at the moment of power transmission.
(4) Based on the author’s long-term experience, the probability of hardware damage or software operation errors such as PLC and CPU is simply zero. If the PLC input point is not caused by strong electrical invasion, it will not be damaged. The normally open point of the PLC output relay, if it is not for external load short circuit or unreasonable design, the load current exceeds the additional range, and the contact life is also very long.
Here are our main products. If you need them, we can send them to help you compare the prices!Main business: World brand PLC and DCS system spare parts modules① Allen Bradley (USA AB) series products② Schneider series products③ General Electric series products④ Westinghouse Series Products⑤ SIEMENS (Siemens series products)⑥ Selling ABB Robots FANUC Robots, YASKAWA Robots, KUKA Robots, Mitsubishi Robots, OTC Robots, Panasonic Robots, MOTOMAN Robots.⑦ Westinghouse: OVATION system, WDPF system, MAX0 system spare parts.
There are no reviews yet.