Water Cooled Spindle - flood relay M8 M9

Add-ons & Modifications 📛 Others
1

Hello I have the following system, which I am trying to automate switch for spindle water cooling via the M8 / M9 commands in Gsender.

  • brand new Altmill 4 x 4
  • SLB-EXT board
  • Gsender 1.5.4
  • Water cooled spindle - HQD GDZ-23 - 220v 24000 rpm, 8amp 400hz
  • Huanyang VFD - HY02D223B (Huanyang V1 VFD) connected with rs485

I am in Australia with 240v so didn’t want to buy a 110v air cooled spindle, if I could go native 220v watercooled.

This base system all seems to be working properly, after having a lot of trouble with the Non Sienci VFD - I replaced it, before getting it running (the bad one was a BEST knock-off that didn’t seem to be able to communicate by RS485)

To automate the water cooling, I have added a

I have set this up with + and ground connected to the green plug to Flood on the SLD-EXT board, and connected this to the Fox alien relay. I have also tried to switch the wires (+ and ground) and input ports to no avail.

I have enabled coolant controls in Gsender (config) and then in the coolant controls (carve sub menu). When I click flood or try M8 / M9 in the console nothing happens. I have also input these commands directly into the console. (lights turn on on the board under the SWT1 - PWR2 inuts)

I have tried measuring the voltage of the wires with the coolant on / off - no voltage.

I am not really sure how I can problem solve from here.

  • The pump turns on if plugged directly into a socket, the pump is on when plugged into the relay.
  • I noticed that the lights turn on on the SLB-EXT board when turn on flood (M8), but these lights are below the SWT1 to PWR2 connectors. I tried to connecting to SWT1 to see if that would work - but nothing.

I have looked for other postings, but none directly relate

  • SLB water pump control
  • Chillers - adaptors for water cooled
  • inverted coolant controls M8

Any help to try to solve this problem would be really appreciated.

Thanks

James

2

Not sure this will help but here is a document of my chiller control using the AUX power output controlling an iot relay. The AUX power output is then controlled by the M3 and M5 commands (set up in the config - not sure which one at the moment though - took some experimenting).

Also, please note your 3200 IS NOT a chiller - only a radiator so keep an eye on the temperature.

Len

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image533×628 63.8 KB

3

Thanks Len

It is a little hard to understand what you have done. As you have a time delay board in the mix by the looks of things. The Spindle is also connected through the green plug connector, rather than the RS485 port.

Just so I can get what you have done I will unpack it, so if others read this later they may get something from the interaction.

From what I can find. If you are using M3 & M5 commands, these control the spindle M3 - spindle on clockwise. M5 - stop spindle.

This doesn’t explain how PWR2 is switched on.

I tried switching my wiring for the Fox-alien relay from Flood to the PWR1 on the Sienci SLB-EXT board. This seems to have done the trick!

  • M08 turns on PWR1 and M09 turns it off.

(these commands should turn Flood port on and off - but don’t seem to work with my board, that was what was holding me up. I had tried SW1 before but didn’t work.)

Perhaps you wrote a macro to turn on the M08 when the spindle turns on M03?

I couldn’t find any listing of commands in the Gsender documentation, this is what seems to work.

M00 - program stop

M01 - option stop

M02 - Program end

M03 - Spindle on clockwise

M04 - Spindle on anti-clockwise

M05 - spindle stop

M06 - Tool change

M07 - mist coolant on

M08 - flood coolant on

M09 - Coolant off

Industry CNC codes, M10 & M11 - accessory on off controls don’t work with gsender, so I think PWR1 & PWR2 are switched on with the M07, M08 & M09 controls. As the lights below SW and PWR all turn on with the M08 command and turn off with M09.

Now for the next steps, working out if I need to write macros and work out why Gsender disconnects after switching on the spindle??

Thanks for your help Len

SLB-EXT working w relay
SLB-EXT working w relay1920×1081 687 KB

Relay and pump switched on with PWR1
Relay and pump switched on with PWR11920×1080 441 KB

4

The time delay relay is there to “delay” the alarm signal from the chiller that is active when the chiller first powers on. I have that alarm going to (I think) an alarm input to shut everything down if chiller fails just like hitting the E STOP.

If I remember correctly, there is a CONFIG section where you can control which commands control the SW outputs. I will have a look tomorrow when I get back to the machine.

Regarding the RS485 jack
.. there are two pins on the greeen connector that ARE duplicates of jack. Easier to connect there than wiring an RS485 plug.

5

Does your VFD have any outputs?

I am using a “Folinn BD600” and it has a pair of ‘multifunctional output terminal’ (open drain) outputs that can be configured to operate on a whole bunch of scenarios through programming. I set mine to active when the spindle is in “run” state, and use that to trigger an external solid-state relay that drives my water chiller.

Then it is (theoretically) guaranteed to be on any time the spindle is, and it doesn’t use up one of the SLB-EXT outputs.

6

I am not sure if my Haunyang VFD has any outputs that can be controlled. Your doing essentially the same as I am using the AUX output of the SLB-ext.

7

Agreed, same outcome achieved. I like relying on the VFD since there’s no worry about a “sync” issue (starting spindle but missing aux output M code or whatever), and I am using every single slb-ext output for other stuff (coolant spray, tool change, vacuum) :sweat_smile: