I am working on an automation project, it is a simple press to install molded rubber inserts in a die-cast aluminum plate. I am using an Omron CQM1 PLC (24 VDC input, relay output (2Amp)).
This PLC was originally purchased for a project that never materialized. It consisted of an Omron PLC in an enclosure with a 24 VDC power supply and 10 pneumatic solenoid valves (120 VAC 1.6 W coils).
The existing circuit protection consists of a 5 amp breaker on the incoming 120 VAC line, a 1 amp fuse in the 120 VAC line to the 24 VDC power supply, a 2 amp fuse in the 120 VAC line to the PLC.
In my new application I will be only using 3 solenoid valves.
My question is the 5 amp breaker the correct size? Also should there be a fuse (1or2 amp?) on the 24 VDC output line form the power supply to the to PLC input common. There will be about 12 prox switches for inputs. What do you think?
This PLC was originally purchased for a project that never materialized. It consisted of an Omron PLC in an enclosure with a 24 VDC power supply and 10 pneumatic solenoid valves (120 VAC 1.6 W coils).
The existing circuit protection consists of a 5 amp breaker on the incoming 120 VAC line, a 1 amp fuse in the 120 VAC line to the 24 VDC power supply, a 2 amp fuse in the 120 VAC line to the PLC.
In my new application I will be only using 3 solenoid valves.
My question is the 5 amp breaker the correct size? Also should there be a fuse (1or2 amp?) on the 24 VDC output line form the power supply to the to PLC input common. There will be about 12 prox switches for inputs. What do you think?