its a Huanyang – see youtube video link below for set up instructions

**LINK**

hope this helps

Dave

Email sent with manual………

Edited By Involute Curve on 05/05/2015 16:13:49

Thanks for the manual link. I have one of these on my cnc router/engraver and it came with no manual for anything at all. It has been an 'interesting' experience setting up the cnc stuff, especially as the output from this vfd is so electrically noisy at low frequencies it causes the stepper motors to step without controller commands being sent.

Regards,

Richard

Maybe some opto-isolators would help?

I have one of these Huanyang VFDs and whilst quite happy with it, it does have some downsides compared with well know brands.

When I got it I already knew that the Modbus communication (I think) is not usable but that does not matter on my lathe motor. Getting it configured initially was challenging as the manual is pretty poor. With help from forum members here it was soon up and running.

The first time I switched the power on nothing happened so I switched off and checked the wiring. I switched on a second time and again nothing happened. By nothing happening, I mean there seemed to be no response whatsoever, no noise, no lights, nothing! I then found out that I was not waiting long enough. From applying power to the display lighting up is probably 20 seconds. This is not a problem but its just unusual behaviour.

My second dislike was the audible noise from the cooling fan, Its quite loud and it runs continuously. I have fitted an electronic thermostat on the heatsink and its set to 50c. Now, the fan only runs very occasionally and probably has only come on a handful of times in the last three months. What is interesting is that I only hear the fan when I switch the motor off and then it only runs for 20 or 30 seconds before the temperature is below the setpoint.

The main problem I only discovered last weekend. Over the last few month my wife has had difficulty maintaining a stable WiFi connection but every time I investigate the problem has gone away. To cut a long story short, I never see the WiFi problem because 'I' don't use the Wifi and the lathe at the same time!

As mentioned earlier in this thread this VFD is electrically very noisy. The cable from the VFD to the motor is only 18" long although it not screened, nor is the 1m long mains lead. I have a mains filter which I will fit this weekend and report back.

Ian P

Hi Richard,
An opto-isolator is just a infra red photo diode in the same package as an infra red photo transistor. When current is passed through the photo diode the light from it causes the photo transistor to conduct. There is no electrical connection between the diode and transistor. They are normally in the form of a dual in line or surface mount package which will contain one or more isolators. You could think of it as a fast low power relay. Regarding electrical interference from VFDs. ALL VFDs will produce interference particularly from the cable to the motor and the mains power lead to the VFD. It is good practice to use screened cable between the VFD and the motor and fit a mains filter CLOSE to the power input terminals of the VFD.  Arc Euro Trade sell screened cable by the metre and EMI filters. (In the section High Speed Spindles, Motors & Inverters.)

Les.

Edited By Les Jones 1 on 08/05/2015 08:47:09

Edited By Les Jones 1 on 08/05/2015 08:53:56

Les,

Thanks for that link. It gives more clarity in one diagram to my simple mind than hundreds of posts would given how electronically illiterate I am. I am going to try first a ferrite ring around the mains cable (have one from a dead PC). This may work, if not I'll get one of those line filters. I'll also knock up an earthed galvanised box for the vfd to go in, and have one open side for access and cooling. The open side will point away from the computer, cnc and house.

I have a suspicion that the metal roof to my workshop is acting as a reflector for interference, which is likely not to be helping.

Regards,

Richard.