Reply with QuoteThere a normally a couple of programmable outputs, normally one relay and one transistor. The relay should have both NO and NC contacts. You can program them for any available function.
HY VFD to control ssr's
I'm just getting ready to use a HY vfd and I want to control a couple of ssr's to control the water pump and a vacuum.
Haven't even powered on the VFD yet but I wanna get the wiring done.
So I wondering the best way to connect the ssr's.
Is the VFD 24v output "always on" or is it on with the spindle?
Figuring if it's on with spindle I'll just use that.
If not, is the relay on with spindle? transistor on with spindle?
Basically looking for anything that is on with the spindle and not always on/
thanks.
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Re: HY VFD to control ssr's
There a normally a couple of programmable outputs, normally one relay and one transistor. The relay should have both NO and NC contacts. You can program them for any available function.
Jim Dawson
Sandy, Oregon, USA
Re: HY VFD to control ssr's
You could use either Up To Speed, or At Zero Speed, if the latter then you use the N.C. contact on the relay and this should be open at zero and close as soon as the spindle starts.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Re: HY VFD to control ssr's
You have 3 to choose from FA FB FC they are controlled by PD052 which needs to be set to 01 this will turn on when the VFD Drive is turned on from or by the control Terminals FWD and DCMOriginally Posted by frunple
Mactec54
Re: HY VFD to control ssr's
On an allied note, I have also used an output fed back to the controller for spindle Up-To-Speed signal, in order that no move takes place until the spindle has reached the programmed spreed.
This would be the output set to 05 - Set frequency.
One of the transistor open collector PLC outputs can be used for this.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Re: HY VFD to control ssr's
That's a great idea.
What controller do you use?
How did you tell it not move? Is it looking for a voltage?
Re: HY VFD to control ssr's
Actually it was a Galil motion Card using Galil HMI program/interface I adopted, what I did was issue a RPM, Sxxx to the spindle, and used the FIN(ish) signal method used in CNC/PLC programming.
This is where a CNC program waits for the FIN signal confirmation back to an input before continuing to the next command rung.
It may be possible to implement in other controllers where this type of command is used.
There are a few other examples of this, such as where a chuck close pressure switch has to be seen before the program continues etc.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
