Discuss Siemens RCCB trips even while inductive motor is off in the Industrial Electrician Talk area at ElectriciansForums.net
It is used for all kinds of materials, steam sterilizer. Clothing, cleaning, etc. Materials for a cleanroom.Nicelectrician: What is/will the autoclave used for please?
The situation is that the RCCB actually trips.The same transformer that provides the supply to the 'Power fail' relay has another secondary coil which provides the 24V ac for the various electrically operated solenoid valves(V1 etcetera). The load of one or more of these valves being energised could be loading the transformer such that the voltage to the 'Power fail' relay has a temporary dip, opening it's contacts briefly, and then recovering to close the contacts - yet the PLC detects the brief opening of the contacts and assumes a 'Power Fail' has happened.
Check the output voltages of the secondary coils and also any marking for the voltage rating of the primary coil - is the primary suited to 208V or is it a 220V/230V/240V primary?
I dont have much tools to test, The only option to "test" that I have is to change it. I m already planning to do so. But if you know a method to troubleshoot the RCCB I m all ears.Have you carried out any tests on the RCCB in case that is at fault?
Reply to Siemens RCCB trips even while inductive motor is off in the Industrial Electrician Talk area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.