The connected devices can be powered with the internal 10 V with the connected device connected to a logic output.

Wiring diagram for open collector logic control outputs with 10 V

If the connected devices require a different voltage, these devices can be powered with an external power source. The negative output of the external power source must be connected to the GND of the system; the positive output is connected to the device.

Wiring diagram for open collector logic control outputs with external power

A recovery diode is required when a relay is connected to the logic control output.

Wiring diagram for open collector logic control outputs connecting relays