N0VUSUN and Mitsubishi-D700-SC

[Doddy]

Here's a good one for you.!

In the past I've had these relays come the wrong way around ie: Pin13 iss V+ 14 V- and it did exactly what you are getting. Check it.!

I'm surprised. But, if OP is to test this then remember to swap the diode as well (so that the cathode is ALWAYS connected to +24V), otherwise you'll potentially damage the NVEM.

[Daveo]

Here's a good one for you.!

In the past I've had these relays come the wrong way around ie: Pin13 iss V+ 14 V- and it did exactly what you are getting. Check it.!

hi jazzcnc
tried it round the other way including changing the diode round but still has the same effect, just dont think the controller has the ummph to switch the relay in

[Daveo]

So does the relay and the diode look correct...

the 24v live to the relay is constant direct from the power supply if i test from 0v on the power supply.
i have 0v across pin 13 and 14 and then 24v across pin 13 and 14 when the spindle is turned on but only when the relay is pulled out.... it i put the relay in and test i only get 2 or 3v

just to confirm...on the relay is pin 13 to be 24v or 0v

[Doddy]

Thanks. The diode is correct.

I've not been clear enough in how to measure the voltage, but the bit that you've said that you get 2-3 volts across the relay when the spindle should be on... that means you're dropping 3 volts across the relay coil which at 650R (roughly what it should be, given Jazz's quote of 36mA draw current) gives a switching current of around 4.5mA - bottom end of the performance of the opto-isolator of the NVEM and certainly not enough to actuate the relay.

If you are prepared to PM me your address I'll pop a gadget in the post (it's just the PNP transistor set-up... but I'll test it works before posting). Or, if you're happy to source/wire one up yourself then go for it.

[Daveo]

Hi Doddy, i will pm you
Dave

[Doddy]

Dave,

Can't share images via PM so posting here...

[Daveo]

hi
a massive thanks for your support...

[SDGear]

Hi Daveo

I recently bought a Novusun NVUM controller and I am struggling the same as you to get the outputs working correctly. Did the supplied solution work? What did you end up doing?

I'm also looking at switching a relay to start up a dust collector and water pump, would this wiring be the same as for the spindle setup to activate the relay?

Any advice to an electronics novice would be greatly appreciated!

[Doddy]

...let's see if you're working first