ABB ACS50 VFD

Does anyone have a vfd the same as the make and model of the title ? I am having endless difficulty wiring it up to a switch so i can run the motor it controls in both forward and reverse.

The motor is on a bridgeport head, so i need to run it both directions.

User manual here...

https://library.e.abb.com/public/ec45f5a0385caafcc2256f51004720a3/EN_ACS50_UG_E.pdf

Thanks john, its as much use as a chocolate teapot i am afraid. It shows a circuit diagram for the control wiring that does not seem to work.

Have you "told" the inverter , check the dip switch settings...page 10.

Edited By John Rudd on 29/08/2018 08:11:10

From the manual p 14 it looks like you need to have a changeover switch that can connect pin 7 to 0 v or +12 v to set fwd and reverse. If that doesn't work you may need to tell the inverter somehow to take its control from the inputs as John R says.

There's also some info on here....

https://www.practicalmachinist.com/vb/transformers-phase-converters-and-vfd/abb-acs50-wiring-help-258471/

There's also some info on here....

https://www.practicalmachinist.com/vb/transformers-phase-converters-and-vfd/abb-acs50-wiring-help-258471/

I have three of these here if you want any spares. They all worked well for a couple of months and all ended up making smoke.

You don't need a changeover switch. The REV input has a pull-down resistor built in so that it goes to 0 V if left open circuit. It is connected via a simple switch to the +12 V pin to reverse the motor.

Silly question - have you made the connection labelled "1)" and dotted in the diagram on p. 14?

Russell

Thanks for all the help and kind offers, I will work my way through them tonight and see if i can get the thing to work as i would like. I am sorry i bought ABB, they are not user frendly to say the least, the manual is a joke, and the company unhelpful.

+1 to that

I don’t think any manuals for industrial control equipment are made for easy reading. They are written for control professionals and make a poor self teach document. The suppliers who target the home user offer good support and paying a bit extra gives them time to spend on our support. Support from large companies like ABB is often something that they sell for many thousands of pounds a year so they are not going to be interested in a user who probably didn’t buy the unit from them. Many people have saught support on this forum and often there is someone with relevant knowledge who can get you going. Often things do not work as you might think and the inputs for a VFD are often customised by parameter settings in the drive.

Mike

I have it sorted now, a chap on another forum told me to connect the two sides of the switch using a diode. I had done this before with a piece of wire and all it achieved was reversing the motor, no matter which way the switch was turned it still turned the same way.

I scavenged an LED out of an old radio, put it across the terminals of the switch and hey-presto, it worked. Turn the switch one way-clockwise, turn it the other way-counterclock.

Thanks to all who assisted and took the time to answer my questions.