Yes if it is the coil causing the issue.

It could also be the zero speed output from the spindle drive.

Se how you get on.

If you remove wire number 90 from the GIR that will disconnect the guard solenoid.

It may also be worth checking the diode fitted inside the Guardmaster switch.

It sounds like something may be shorting out the 24Volts DC.

It may be worth disconnecting one of the wires going to the guard lock solenoid.

Hi Chris

Have you got the serial number of the Cyclone.

It`s hard to see what board it is.

I thought it was the toolpost control card at first but not sure now.

If you remove the board it may have a part number on the bottom.

The Lock Nut is most likely a KM1

https://www.thebearingcompany.co.uk/pro ... lock-nuts/

The tool we used was made at Denfords a while ago.

We don`t have any anymore.

It will be a FANUC OTA Control.

Attached is the Electrical Record Sheet for TP0011 although the control serial number is different.

You should be able to bend the wire & lay it in a position which is away from the lead screw.

I think they were all options but the graphics required a new card fitting.

If you can find the original 900 parameters it would be worth checking.

Can you remove the bellow on the right hand side & check the cable going to the X axis home switch is clear of the leadscrew as it moves.

Yes.

I think we set the HZ to 37 but not 100% on that. It also controls the accel & decel.

I have attached the electrical drawings for the MIrac PC from 1995 showing the shared spindle/toolpost inverter but with the DM8 toolpost.

The RH80 works exactly the same. The inverter is programed to alter the voltage depending on what input is requested.

It's a long ago but I serviced was sent to service one & was told to cut the resistors on the board. Not sure which they were but it worked.

The white button on the front should be for indexing the turret manually.

Hi Charlie

It would be unusual for all three to fail at the same time.

Can you double check that the Datums are connected to PL.M on the PNC3 Control.

Yes set it to Unknown/Special & it wont display the warning.

We never did a 2.2 Eprom

I found the HEX file for a 2.0 Eprom which is very similar to a 2.1 Eprom.

I don`t think that is the turret drive card.

I think it is the spindle analogue board.

Can you post a picture of where you have connected it to & the spare plugs in the area.