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  1. Spindle Speed Controller
    • Spindle Speed Controller

    • Relay COM Cable

    • Relay 12V Cable

    • Relay Signal Cable (with 2 pin connector)

    • M4 Lock Nuts (2 Pcs)

    • M4x8 Cap Screw (2 Pcs)

  2. 3mm Allen Key
    • 3mm Allen Key

    • Small Phillips Screw Driver

    • Phillips Screw Driver

    • Sharp Nose Pliers

  3. Mount the Spindle Speed Controller as shown with the M4x8 Cap Screws (2 Pcs) and the M4 Lock Nuts (2 Pcs)
    • Mount the Spindle Speed Controller as shown with the M4x8 Cap Screws (2 Pcs) and the M4 Lock Nuts (2 Pcs)

    • Tighten the screws with the 3mm Allen Key and the Sharp nose pliers

  4. Connect the black and red cable of the Speed Controller to the V- and V+ port on the 400W power supply as shown Take the Relay COM Cable and connect the end without the crimp terminal to the relay.  The red cable needs to be connected to the NO port and the black cable to the COM port as shown. Connect the other end of the Relay COM cable to the 400W power supply by connecting the red cable to the N port and the black cable to the crimp terminal on the blue 220V cable as shown.
    • Connect the black and red cable of the Speed Controller to the V- and V+ port on the 400W power supply as shown

    • Take the Relay COM Cable and connect the end without the crimp terminal to the relay. The red cable needs to be connected to the NO port and the black cable to the COM port as shown.

    • Connect the other end of the Relay COM cable to the 400W power supply by connecting the red cable to the N port and the black cable to the crimp terminal on the blue 220V cable as shown.

    Once I switch power on is the green LED supposed to come on - on the S-400-48 power supply? If it is not coming on - what could the issue be? Also in some of the images the blue neutral cable is connected directly to the S-400-48 (N) - was there a change to the layout?

    Kevin van der Merwe - Reply

    The relay NO and COM ports are too small for the cable to insert and grip adequately.

    Allen - Reply

  5. Connect the Relay Signal cable to the IN port on the relay (red cable) and to the DC- port on the relay (black cable) Plug the 2 pin connector to the Z+ pins on the CNC shield with the red cable closest to the stepper drivers as shown Plug the 2 pin connector to the Z+ pins on the CNC shield with the red cable closest to the stepper drivers as shown
    • Connect the Relay Signal cable to the IN port on the relay (red cable) and to the DC- port on the relay (black cable)

    • Plug the 2 pin connector to the Z+ pins on the CNC shield with the red cable closest to the stepper drivers as shown

    When I connect the lazer and relay, the spindle does not turn on ? It's second hand machine and I'm not sure what to do. Do I have to reconnect the motor relay everytime I want to use the spindle? Or can I leave the lazer attachment and corresponding relay?

    Or could it be a drive issue ? As my steppers are running fine when I set the machine up on easel

    Zaheer - Reply

    Hi, its to turn the spindle on and off. GRBL 1.1 switched the pins for spindle enable and the Z limit switch pins.

    Paul Cronje - Reply

    what is the reason for the 2 pin connector that is plugged into the z+ on the cnc shield (end stop z+) ?

    Sean - Reply

  6. Connect the Relay Power Cable to the DC+ port on the Relay and to the +V port on the 100W Power supply
    • Connect the Relay Power Cable to the DC+ port on the Relay and to the +V port on the 100W Power supply

Finish Line

14 other people completed this guide.

Paul Cronje

Member since: 10/05/2018

3,750 Reputation

34 Guides authored

One Comment

A bit vague this step when done in conjunction with the laser add on.

Francois Maritz - Reply

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