Milo CNC V1.5 Wiring Guide

Print the mount for the WAGO terminals. The WAGO terminals are simply snapped into the printed part.

Push the printed PSU mounting brackets into the sides of the power supply. The brackets can be found here .

Position the expansion board onto the printed part and align the holes. Secure with M3x8 SHCS screws. The screws are tapped directly into the printed part.

Verify the pre-populated and the jumpers matches the image.

Add two jumpers (red) to short the Z2 port.

Add jumbers as indicated in yellow.

Insert the fuse indicated in blue, if not already installed.

The FET Modules are not installed when you receive the mainboard. Remember to install them as indicated in green box otherwise the fans are not going to work.

Position the mainboard onto the printed mainboard mount and align the holes. Secure with M2x10 self-tapping screws.

Place a sleeve bearing and a 0.5x8x10 spring onto the sex bolt.

Install the sex bolt into the top hole of the printed toolsetter .

Scure the sex bolt with an M4x8 SHCS screw.

You can add M4x7x1 washers between the screw and sexbolt in case the bolt cannot trigger the microswitch.

Cover the Optical Long John PCB and secure with M2x10 self-tapping screws.

The Emergency Stop (E-Stop) button is used in emergency situations to quickly switch the machine into a safe state. To use the E-Stop, the user simply needs to push on the red button: the machine would then immediately stop all movement and the spindle would also be stopped. To cancel the E-Stop, the user twists the red cap clockwise - this pops the E-Stop button back to its default position.

When the E-Stop button is not pressed, the center contact is pressed down causing the two terminals (labelled 11 and 12) to be closed.

When the E-Stop button is pushed, the center contact is pulled up causing the terminals to be open.

Refer to the photo and place the power supply, wire ducts, and PCBs.

Use M5x10 BHCS screws to secure the mainboard mount. Use M5x12 BHCS screws for the WAGO terminals. Use M5x6 BHCS screws for wire ducts. Use M5x8 BHCS screws for all other mounts.

If the AC inlet you received is not pre-wired. Follow the layout as shown in the picture. We recommend attaching the cables to the AC inlet before installing it onto the rear skirt.

Connect each end of the live (L, brown), neutral (N, blue), earth (PE, yellow/blue) ends of the cable to a seperate WAGO terminal as shown in the picture.

Connect each of the Live (L, brown), neutral (N, blue), earth (PE, yellow/green) ends of the cables to a seperate WAGO terminal. Then connect the other ends to the PSU as shown in the picture.

To install the E-stop, you have to disassemble it first. By pressing on white tab while pulling on the button cap, you can seperate the contact box from the button stalk.

Pay attention to the grooves on the yellow button stalk, these grooves only allow you to re-attach the contact box in a specific orientation.

Insert the button stalk through the circular hole in the front skirt, then re-attach the contact box. Make sure the orient the contact box properly: the side without labelling should face out.

Connect two input cables to terminal 12 and 22 of the E-Stop and 3pin WAGO terminals.

Connect two output cables to terminal 11 and 21 of the E-Stop and 5pin Wago terminals.

Connect the end (To EXP, black/red) of the EXP pwr cable to the PSU, and the other end (24V IN) to the expansion board.

Connect the end (To MB, black/red) of the MB pwr cable to the PSU, and the other end (24V IN) to the mainboard.

Route the X motor cable through the side hole of the table and the wire duct as shown in the picture.

Connect the end (X MIN, orange/green) of the cable to the X-MIN connector on the mainboard.

Connect the end (X MOTOR, black/red/yellow/blue) of the cable to the DRIVER 0 connector on the mainboard.

Route the the other end of cable through the drag chain and connect the omron switch and the 11 pin connector to the X motor as shown in the picture.

Route the Y motor and Y endstop cables as shown in the last step.

Connect the end (Y MIN, black/red) of the Y endstop cable to the Y-MIN connector on the mainboard.

Connect the end (Y MOTOR, black/red/brown/orange) of the Y motor cable to the DRIVER 1 connector on the mainboard.

Route the Y end-stop cable through the extrusion slot and attach the omron switch to the position as shown in the picture.

Connect the 11 pin connector of the Y motor cable to the Y motor.

Route the Z motor cable as shown in the last step.

Connect the end (Z MIN, orange/green) of the cable to the Z-MIN connector.

Connect the end (Z MOTOR, black/red/brown/yellow) of the cable to the DRIVER 2 connector as shown in the picture.

The omron switch and the 11 pin connector of the Z motor cable is connected to the Z motor as shown in the picture.

First let's connect MB to EXP ENA cable (yellow/red/black). Connect the end (VFD ENA) to the LASER connector on the mainboard and connect the end (ENA IN) to the RELAY1-IN connector on the expansion board.

Then we'll connect MB to EXP SPD CTRL cable (red/black). Connect the end (VFD SPD) to the mainboard (BL TOUCH) and connect the end (PWM IN) to the PWM-IN connector on the expansion board.

Refer to the picture for the correct orientation of the VFD SPD end.

Route the spindle motor ENA & SPD CTRL cable.

Connect the ends of the cable to the terminals on expansion board as shown in the picture. Pay close attention to the polarity.

Route the tool setter cable as what we did previously and connect the end to the Z-MAX connector on the mainboard.

The other end of the cable is connected to the tool setter.

Connect each end of the live (L, brown), neutral (N, blue), earth (PE, yellow/blue) ends of the VFD power cable to a seperate WAGO terminal as shown in the picture.

Put the wire duct covers on. (You may need to rearrange the wires and use a little force to do so.)

Place the 4010 fans on the bottom panel and align the holes. The side with labelling should face downwards.

Secure with M4x10 self-tapping screws from the other side.

Connect the ends of 4010 fans to Fan 0 and Fan 1 terminals. (This picture doesn't reflect previous cables but they should be in place.)

Preload M5 roll-in nuts and then put the bottom panel on. Secure with M5x10 BHCS screws.

Connect the end of live (L, brown) cable of the VFD pwr cable to R/L1 terminal. Connect the end of neutral cable (N, blue) to the S/L2 terminal. Connect the earth cable (PE, yellow/green) to the earth terminal.

The other ends of the cable to the wago terminals are connected in the previous step.

Connect the end (U, red) of the cable to U terminal. Connect the end (V, yellow) of the cable to V terminal. Connect the end (W, black) of the cable to W terminal. Connect the end (PE, black) of the cable to the earth terminal.

Please check the spindle direction after powering it on. If it is spinning clockwise, please change any 2 of the 3 spindle wires (V/U/W) around.

The other end of the cable is connected to the spindle motor.

The other end of the cable is connected in the previous step.

The priority of the slot cover goes within the C beams and then the top of the table. The rest goes wherever you feel like.

Connect the end (ENA, orange) of the cable to X1 terminal. Connect the end (GND, black/brown) of the cable to GND terminal. Connect the end (SPD CTRL) of the cable to AI1 terminal.

Connect the end (U, red) of the cable to U terminal. Connect the end (V, yellow) of the cable to V terminal. Connect the end (W, black) of the cable to W terminal. Connect the end (PE, black) of the cable to the PE terminal.

Connect the end of live (L, brown) cable of the VFD pwr cable to L terminal. Connect the end of neutral cable (N, blue) to the N terminal. Connect the earth cable (PE, yellow/green) to the PE terminal.