EMCO Maximat 13 Update

[Darren]

Fortunately, mine was a 208-230v motor to begin with. So an off the shelf teco l510 vfd made it easy.

If you could find a vfd which will take 240v, single phase in, and output 440-480v three phase, that would be super easy, and i can help you with the controls. Its very easy. I've never seen such a vfd, but they probably exist.

 

[taem111]

Thanks for the update. I have a V13 as well, so if you need pics or dimensions, let me know. I have the brake motor as well and have it switched by my Teco L510 vfd. It works good, but i need to add a switched power feed to energize (deactivate) the brake in order to make gear changes easier.

We have just bought the V13 with the two speed motor and engine brake and are trying to energize it with a VFD How do you wire from the VFD to the engine brake to allow it to disengage when powered? Do you have a wiring diagram for the motor with engine brake? I attach a picture of the inside of the control panel for reference. I have no idea what the switches connect to the engine brake are that would allow us to turn the motor. I should add that we have next to no experience with programing VFD's so I would greatly appreciate a really simplified explanation if you can

 

[Darren]

The Teco L510 vfd is capable of controlling a relay for the brake. The brake requires 24v to disengage. I used a 24v 5a power supply to provide the power. The power supply is switched on by the same switch that provides the 240v to the vfd, the 24v output is switched by a solid state relay. Ths vfd is controlling the relay. Some tweaking of the parameters and it works great. The hz output of the vfd is set to 30 to 90, the relay is switched off when the motor is at 25hz or less so that's when the brake engages. It instantly stops then. So at 90hz, when you switch of power, it vfd brakes down to 25 and the mechanical brake comes on, instantly stopping the spindle. At 30hz, like when threading, the spindle instantly stops.