OptoCtrl 3/4

This product is available in our web shop: OptoCtrl 3/4.

OptoCtrl 3/4 adapter is a device that opto-isolates Mk3/4 controller inputs from external devices such as rotary incremental encoders.

Its main function is to protect the input circuitry of Mk3/4 controller from any damage that may occur due to improper wiring or power surges at the side of externally connected device.

Also, using this adapter reduces electrical noise influence at controller inputs and makes up for easy connection of rotary incremental encoders

Adapter is available in two versions: NPN and PNP. Version used, depends on the type of external hardware.

• Single adapter offers 3 high speed opto-isolated input channels for encoder and one opto isolated channel for estop button.

• Each input corresponds to its dedicated open collector output

• Voltage range of optoisolated input signal is 5-24VDC

• It can be used as a simple voltage level translator where you need to connect devices that function at different voltage levels (e.g. 5V, 12V, 24V)

• Adapter was designed specifically for Mk3/4 controller but it can be used with any other board that needs opto-isolated inputs.

As an example or reference, we used an Omron E6B2 rotary encoder. This encoder comes in multiple versions which differ on from another based on its output circuit. Diagrams below will serve as an example on how to connect rotary encoder, depending on what type of output circuit encoder uses.

Common types of output circuits of rotary encoder are as such:

• NPN Open-collector output
• Voltage output
• Line driver output
• PNP Open-collector output
• Complementary output (aka Push Pull)

Use NPN OptoCtrl 3/4 adapter:

Output wires of E6B2 CWZ6C encoder:

Black wire is encoder’s OUTPUT A → connect to ENA input

White wire is encoder’s OUTPUT B → connect to ENB input

Orange wire is encoder’s OUTPUT Z → connect to IDX input

Use NPN OptoCtrl 3/4 adapter:

Output wires of E6B2 CWZ3E encoder:

Black wire is encoder’s OUTPUT A → connect to ENA input

White wire is encoder’s OUTPUT B → connect to ENB input

Orange wire is encoder’s OUTPUT Z → connect to IDX input

Use PNP OptoCtrl 3/4 adapter:

Output wires of E6B2 CWZ1X encoder:

Black wire is encoder’s OUTPUT A → connect to ENA input

White wire is encoder’s OUTPUT B → connect to ENB input

Orange wire is encoder’s OUTPUT Z → connect to IDX input

Black/Red wire is encoder’s OUTPUT /A → connect to GND

White/Red wire is encoder’s OUTPUT /B → connect to GND

Orange/Red wire is encoder’s OUTPUT /Z → connect to GND

Use PNP OptoCtrl 3/4 adapter:

Output wires of E6B2 CWZ5B encoder:

Black wire is encoder’s OUTPUT A → connect to ENA input

White wire is encoder’s OUTPUT B → connect to ENB input

Orange wire is encoder’s OUTPUT Z → connect to IDX input

Use NPN OptoCtrl 3/4 adapter:

Output wires of E6B2 CWZ5G encoder:

Black wire is encoder’s OUTPUT A → connect to ENA input

White wire is encoder’s OUTPUT B → connect to ENB input

Orange wire is encoder’s OUTPUT Z → connect to IDX input

Use PNP OptoCtrl 3/4 adapter:

Output wires of E6B2 CWZ5B encoder:

Black wire is encoder’s OUTPUT A → connect to ENA input

White wire is encoder’s OUTPUT B → connect to ENB input

Orange wire is encoder’s OUTPUT Z → connect to IDX input

Warning!!!

Both, NPN and PNP OptoCtrl 3/4 versions of adapter need to be supplied with +5V from Mk3/4 controller. 5V from Output the output terminal should be used.