Mactec is correct this was not done very well. First check the incoming voltage it should be 220v to 240v and that is normally connected toR and S. If you have the right incoming voltage something probably died in the VFD. Mantec has worked on lots of these units.
Russ
Is it worth replacing this unit for another identical one or another brand? Can you recommend others?
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Mactec54
potts,
Did you check the incoming voltage is it between 220v to 240v? Is so you had something die in the VFD. These Huanyang VFDs are probably the cheapest units you can find, but you might want to consider a Hitachi, lots of people get those they usually cost about $75 more but the quality and the manuals are much better. You need the one for the 2.2KW spindle based on what you posted previously. Search the zone and you will find the exact model number. Since this is low voltage error you might have only lost components in the VFD itself, many times the VFD and Spindle both go at the same time. I would take an ohm meter and unplug the Spindle and measure from the case (ground) to each of the phase pin connectors to ensure the spindle is no internally shorted, especially prior to attaching a new VFD.
Russ
A bit more than $75 more...but you might want to consider a Hitachi, lots of people get those they usually cost about $75 more
Huanyang = $135.
Hitachi = $325
Gerry
UCCNC 2017 Screenset
http://www.thecncwoodworker.com/2017.html
Mach3 2010 Screenset
http://www.thecncwoodworker.com/2010.html
JointCAM - CNC Dovetails & Box Joints
http://www.g-forcecnc.com/jointcam.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
The readings from each pole to ground should be pretty much open, meaning no reading. Then when you measure between each phase you should get something 2-3 ohms a low reading. You are trying to verify that no phase got shorted to the ground case of the spindle. Sometimes that happens when a spindle is run too slow and the wire gets so hot is melts the insulation and the short results. These spindles are designed to run from 6000 rpm to 24,000 rpm. In fact the VFD should be programmed so the lowest frequency is 100hz, which equates to 6000 rpm.
Gerry,
Wow, the Huanyang got lots cheaper than when I purchased mine a long time ago. The $325 for the Hitachi should about right from what I recall, so that has not moved very much. I got mine as a spindle vfd combo so probably why my view was outdated.
Russ
Russ
2.2KW - VACON 20 VACON0020-1L- 0009-2 EMC2 QPES - IP20
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Is it a Hitachi WJ200-022SF ?
The 2.2kw one is £450! Ouch
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Gerry
UCCNC 2017 Screenset
http://www.thecncwoodworker.com/2017.html
Mach3 2010 Screenset
http://www.thecncwoodworker.com/2010.html
JointCAM - CNC Dovetails & Box Joints
http://www.g-forcecnc.com/jointcam.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
No it is poorly connected on top, the plug body has a insulator between it an the main body of the spindle, this is how your spindle should be connected, most of these spindles need the 4th pin connected this is what is needed, it's not only your Ground that is not connected correct, the cable shield also need to be connected, which is not
Mactec54