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Using output board with PlanetCNC controllers

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Output board can be used to control external equipment such as VFDs, coolant systems, vacuum pumps etc.

It requires 12V power supply connected to a terminal labeled 12V (be careful with the polarity). Output board has 3 relays and 0-10V output. Relays can be used as NO (normally open) or NC (normally closed).

Relays and 0-10V output can controlled via 10pin header or terminals labeled “S”, “0”, “1”, “2” and “3”.

 

1. Output board connector description:

 

This IDC connector is used to connect output board with controller via 10pin ribbon cable (For Mk2 and Mk3).
IDC_resized
Pin 5 of this connector activates relay 1.
Pin 4 of this connector activates relay 2.
Pin 3 of this connector activates relay 3.
Pin 6 of this connector controls 0-10V output.
 
This screw type connector is used to connect Mk2/4 or Mk3/4 controllers(or some other external devices) with output board:
Control_Inputs_resized
 
[0-10V; GND, OUT] → to connect variable voltage output with VFD, output

[POWER; GND, 12V] → to connect power supply (12V DC, at least 200mA ), input

[SPEED; S, 0] → to connect varying frequency signal from controller or some other external device, input

S: Frequency signal input from Mk2/4 or Mk3/4 or other external device

0: GND from controller

[RELAYS; 1, 2 , 3] → Control signal input for SPINDLE, MIST or FLOOD from controller (or other external device), input
Input 1 controls relay labeled 1
Input 2 controls relay labeled 2
Input 3 controls relay labeled 3
 
This trimmer is used for calibrating the 0-10V output:
Trimm_resized
 
These are relay connectors. They are used for connection of the controlled device:
RelayConnector

NO- normally open contact of relay
NC- normally closed contact of relay
1 – common movable contact of the first relay
2 – common movable contact of the second relay
3 – common movable contact of the third relay
 

2. Output board and controller connection:

Mk2 and Mk3 controllers use 10pin IDC connector, which makes the connection of controller and output board very easy.

Mk2 output connector:
Mk2_out_resized

Mk3 output connector:
Mk3_out_resized

Mk2 connection:
Mk2resized

Mk3 connection:
Mk3resized

Mk2/4 and Mk3/4 use screw type connectors so you will need to use single wires to connect controller with output board. To know which output pin from controller is connected to which input of output board, please refer to tutorial in Step 1.

Mk3/4 output connector:
Mk34_out_resized

Mk2/4 output connector:
Mk24_out_resized

Mk2/4 connection:
Mk24resized

Mk3/4 connection:
Mk34resized
 

3. Configuring controllers output pins in CNC USB controller software:

For Mk2 and Mk3 controller:

Connect Mk3/Mk2 controller with 10 wire cable to controller OUTPUT connector.
Do not connect terminals labeled “S”, “0”, “1”, “2” and “3”.

Set settings like this:
outputMk2
 
For Mk3/4 controller:

Connect Mk3/4 controller with wires to screw terminals.

If you use 3 relays connect output board terminals to controller like this:
“S” – not connected
“0” – GND
“1” – OUTPUT1
“2” – OUTPUT2
“3” – OUTPUT6

Set settings like this:
outputMk34a

If you use 2 relays and 0-10V connect output board terminals to controller like this:

“S” – OUTPUT6
“0” – GND
“1” – OUTPUT1
“2” – OUTPUT2
“3” – not connected

Set settings like this:
outputMk34b

 

For Mk2/4 controller:

Connect Mk2/4 controller with wires to screw terminals.
If you use 3 relays connect output board terminals to controller like this:

“S” – not connected
“0” – GND
“1” – OUTPUT1
“2” – OUTPUT2
“3” – OUTPUT7

Set settings like this:
outputMk24a

If you use 2 relays and 0-10V connect output board terminals to controller like this:

“S” – OUTPUT7
“0” – GND
“1” – OUTPUT1
“2” – OUTPUT2
“3” – not connected

Set settings like this:
outputMk24b