Messages

1

Mach4 General Discussion / Re: Mach4 Huanyang GT series Modbus setup

« on: May 27, 2019, 07:39:03 PM »

Im not sure why the spindle speed is not displaying correctly, but it looks like Craig has a handle on it. Thanks Craig....


For reference here are the VFD settings I'm using:
P0.00,01,02=0
P0.03,04=400.00
P0.05=0
P0.06=400
P0.07=0
P0.11,12=.5
P0.14=8
P1.00=0
P2.01=2.2
P2.02=400
P2.03-24000
P2.04=220
P2.05=10


Bill

2

Mach4 General Discussion / Re: Connecting a VFD to Mach4 through Modbus (RS485)

« on: April 11, 2019, 09:09:16 AM »

BTW my spindle accelerate and decelerate measurements were done at 12000 RPM which is the sweet spot for most of my work, and they are only done by my eye. No formal measurement was done

3

Mach4 General Discussion / Re: Connecting a VFD to Mach4 through Modbus (RS485)

« on: April 11, 2019, 09:02:13 AM »

According to the manual it does. I have my accelerate/ decelerate times set to .5 seconds now with no external braking resistor and with a 1/2” 2 flute end mill it starts and stops in that time. The manual indicates in this size inverter (2:2KW) the braking is already done internally but it’s a little unclear in the wording. Here is the text of the GT manual.

4.4.2.2 Braking unit and braking resistor
• GT series inverters below15kW (380V) are equipped with internal braking unit.In order to dissipate the regenerative energy generated by dynamic braking, the braking resistor should be installed at (+) and PR terminals

4

Mach4 General Discussion / Connecting a VFD to Mach4 through Modbus (RS485)

« on: April 08, 2019, 04:36:28 PM »

Here is a link to a 26 page tutorial that describes in full detail the steps necessary to connect a Modbus compliant VFD to the Mach4 Modbus (RS485).
It supports M3, M4, M5, and S commands in addition to the Mach4 buttons on the control screen.
I am using a Huanyang GT series 3KW VFD which is compliant with the Modbus protocol and Mach4. Other Huanyang VFDs are not, so be careful.
Other Modbus compliant VFDs are supported with a few simple edits.

http://caldwellfam.net/bill/2019/04/connecting-a-vfd-to-mach4-through-the-modbus-rs485/



Enjoy

5

Mach4 General Discussion / Re: Mach4 Huanyang GT series Modbus setup

« on: April 07, 2019, 11:22:45 PM »

Unfortunately the Huanyang HY series VFDs is not modbus compatible even though they say it is. Huanyang didn't follow the protocol correctly and so the Mach4 Modbus controller can't communicate with them. Huanyang does have a GT series that is fully Modbus compatible. The 2.2KW version is $143 0n amazon.That is the one I am using and it works great.

Here is a link to the 26 page document I just completed that takes you step by step through all the steps necessary to get the VFD up and running. It takes about 1/2 hour to set everything up.
Here is the link to the document. [size=78%]http://caldwellfam.net/bill/2019/04/connecting-a-vfd…the-modbus-rs485/[/size]
[/size]In the document is a link to the LUA code that ties things together. Good luck. Please let me know if you have questions or issues. If you do decide to purchase the GT series VFD then it should be plug and play.[size=78%]

6

Mach4 General Discussion / Mach4 Huanyang GT series Modbus setup

« on: April 07, 2019, 12:58:10 AM »

If anyone is interested in an RS485 (Modbus) Huanyang GT series (yes, it's really Modbus compliant) spindle controller for Mach4, I will be writing a step by step set of instructions in the next few days.
This will consist of a set of instructions on setting up the VFD, the Modbus in Mach4, and the LUA code necessary to tie it all together.
The VFD responds to the normal M3, M4, M5 commands and the speed input from the S command. It uses an off the shelf USB to RS485 converter.
I have used a RS485 based VFD on my Mach3 machine for about 5 years and love it. But I really like some of the features in Mach4 much better.

This setup is easily modified to work with other (Modbus compliant) FVDs.