OP
Antony1
400v circuit voltage but 230v control voltage, I'm sure you see my point and I see yours like I said before it's just my opinion
Discuss 240v Control Curcuit in the Electrical Forum area at ElectriciansForums.net
In your case then what rating is the coil? what is the A2 of the coil connected to? Where are you measuring 230volts on your control circuit?400v circuit voltage but 230v control voltage, I'm sure you see my point and I see yours like I said before it's just my opinion
This is getting stupid, L1 to start of control circuit ends up A1 on coil (400v rating) A2 to L2 or L3 400volt control circuit.I guess the stop and start buttons etc will only have 230v to them, these must energise a relay or suchlike which then connects the other phase for the 400v coil to pull in. With the relay situated in the panel. Thoughts?
I guess the stop and start buttons etc will only have 230v to them, these must energise a relay or suchlike which then connects the other phase for the 400v coil to pull in. With the relay situated in the panel. Thoughts?
It sure will if there is a different phase connected to the A2, the control circuit is the same wether it is a 230v or 400v coil the only change is the connection to the A2 of the coil
Under the BS60402-1 the requirements state that if machinery(control system) has more than 2 actuators ie.. E-stops, limit switches etc then the control voltage must be of an isolated nature, this basically means that whatever the voltage may be it must be done through an isolating TX, where the control has less than 2 actuators then direct mains voltage control is fine hence you can buy a DOL starter with 400v, 230v coils wired directly to the supply of the installation.
No, if they are in one enclosure then they are one "device".What constitutes and actuator? Does this mean that a simple DOL starter with three buttons on it (start, stop, reverse or inch) would have 3 actuators?
No, if they are in one enclosure then they are one "device".
Don't forget once you go from simple systems into safety devices, emergency stops, guard switches, light curtains etc. then you are into full blown EN 13849 territory and that is required for compliance with the SMSR & PUWER, and anyone doing this work is encompassed into this legislation.
Once you have a safety function, so basically anything more than an e-stop, and more than the device count as specified in EN 60204-1.Thanks, I'm only curious as to what point a simple system stops being simple.
Once you have a safety function, so basically anything more than an e-stop, and more than the device count as specified in EN 60204-1.
Grab a copy of 60204 Dave, it's relatively an easy read compared to the BYB.
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