This is the wiring diagram for a similar single phase by the same manufacturer, if I knew the wiring configuration for the relay it would be simple.
View attachment 377112
That bit looks identical to the 3 phase version? Admittedly I’ve not looked in great detail but the only difference to me looks like the contactor is just using 2 poles and the speed selector switch is removed??What do you mean, configuration?, it's a chain of limits, switches etc. feeding the relay coil.
SB1 is a momentary push switch, pressing it energises the contactor coil KM, which pulls in the contacts and that then feeds the coil so the push switch can be released. If any of the limit switches, interlocks or the off switch open, feed to the coil will be broken and the contacts will open. This is a standard No Volt Relay configuration.
That's a good spot it will never work like that.Can't be, the neutral return path runs through the contactor. There's no return path until the contactor is closed and the contactor won't close with no return path.
On the 3 phase one it doesn't run through the contactor...Can't be, the neutral return path runs through the contactor. There's no return path until the contactor is closed and the contactor won't close with no return path.
On the 3 phase one it doesn't run through the contactor...
Admittedly, on the single phase the control coil return needs to jumper the other side of the contactor if 2 pole switching is required