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VFD & IOT... how to wire/configure BlackBox

Discussion in 'CNC Mills/Routers' started by UltiBots, Dec 7, 2021.

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  1. UltiBots

    UltiBots Well-Known
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    Hi all - I upgraded my Dewalt 611 to a 1.5kW VFD spindle. Before the mod I used the IOT relay to power the router and flood pump from BlackBox's Toolhead PWM 5v port. After the mod I am running the VFD off the Toolhead 0-10v signal.

    The problem is you can't use both the 0-10v signal and PWM signal simultaneously. So... I grabbed a 5v power supply and wired it between BlackBox's Relay port and the IOT Trigger port. I can power the VFD and flood pump from GCODE but only when the VFD is at 100% RPM.

    Anyone have an alternative wiring/setup suggestion? I want the IOT outlets to turn on with any RPM.

    TIA - Brad
     
    #1 UltiBots, Dec 7, 2021
  2. that-jim

    that-jim Journeyman
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    What VFD do you have? Some have a relay built in that you can use whenever the spindle is running.
     
    #2 that-jim, Dec 7, 2021
  3. that-jim

    that-jim Journeyman
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    If you have Huanyang HY series inverter here are my notes on connecting accessories to the outputs of the HY series inverters

    There is one onboard relay rated 3 amps 250v so you can connect a small load directedly to this relay or use it to power a larger relay if necessary. I have seen plenty of people mention that the outputs for this relay are mislabeled in the manual so you might check yours with a continuity tester. The functions below are what I found to be true on mine.
    This relay is controlled by PD052
    FB - common
    FC - normally closed
    FA – normally open


    There are also two open collector outputs these make a connection to ground when active. These are good for 100ma so you could connect a led indicator, ssr, relay, or iot relay module to these. This connection is made to the 24v+ output and the one of these output terminals.
    These outputs are marked as follows.
    DRV or Y1 controlled by PD050
    UPF or Y2 controlled by PD051


    Here are some of the functions I have found useful. You set the output PD to this setting and the output will trigger when the right condition is met.
    03 – Fault condition
    01 – Run mode (this is always on if you use FOR to run the VFD)
    32 – Cooling Fan
    08 - uniform frequency 1 reach, run when the frequency set by PD060 is reached
    09 - uniform frequency 2 reach, run when the frequency set by PD061 is reached
    For example I have a red 24vDC warning light wired to DRV so PD050=3.


    If you want the DRV output to turn on an iot relay whenever the spindle is running above a certain RPM.
    Set PD050 = 8
    Set PD060 = .1 This will activate the output whenever the spindle is a 6 rpm or more. A setting of 20 would indicate 1200 rpm ( 20 X 60).
    You could connect the 24v terminal to the + on the iot relay and connect the DRV terminal to the – on the iot relay.


    Hope this helps...
     
    #3 that-jim, Dec 7, 2021
    Last edited: Dec 8, 2021
    Giarc likes this.
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    #4 Peter Van Der Walt, Dec 8, 2021
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  5. UltiBots

    UltiBots Well-Known
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    Jim - I have the Huanyang HY01D511B VFD and 1.5kW spindle. I will look at using the VFD features to trigger the IOT power strip.
    Peter - Just found the specs of the IOT trigger port. When using BB's PWM port it was sending 5v. I was concerned 24v would let the smoke out. However... looking at your link BB docs 3.7.3 looks like 24v is OK!
    Thanks gents for your ideas :)
     
    #5 UltiBots, Dec 8, 2021
    Last edited: Dec 8, 2021
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  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    IoT takes control voltage of 3-60VDC or 12-120VAC :)

    We would not document it if it would not be OK :)
     
    #6 Peter Van Der Walt, Dec 8, 2021
  7. UltiBots

    UltiBots Well-Known
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    **** Peter... you are fast. I edited my post but it was too late. Thanks for the help :)
     
    #7 UltiBots, Dec 8, 2021
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  8. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Cool man, glad you found it :)
     
    #8 Peter Van Der Walt, Dec 8, 2021
  9. Scottlewis2171

    Scottlewis2171 New
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    I just use the coolant to iot and add a header and footer in the pp. Like:
    Header
    M8...turn on vfd/iot
    G4 P15... gives time for vfd boot up
    M3 S18500... turns spindle on and speed
    G4 P10... time for spindle speed up

    Footer
    M5.. shut down spindle
    M9...turn off iot/vfd
    M30....program end
    Seems to work good and only thing left on is the bb.
    Just adding this for future readers looking for the info as i was at one time!
     
    #9 Scottlewis2171, Jul 1, 2022

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