#58, M1S: Two 24V NPN Isolated Open Collector Outputs


Function: Two 24V NPN isolated open collector outputs

Form factor: M1S

Category: Output module

Special needs: ---

Power requirements: 5V/20mA (with both transistors activated)

Mates with: #19, #20, #21

See also: #03-1, #03-2, #06, #07, #15, #59



Output transistors are rated for 24V/0.5A.

To activate a transistor, set the corresponding control line LOW. When left unconnected, control lines default to HIGH (and, hence, transistors will be closed).

Combine this Tibbit with terminal block devices — #20 (nine terminal blocks) or #21 (four terminal blocks).


There are two red LEDs, which are connected to two transistor control lines. LEDs light up for the LOW state of control lines (i.e. when transistors are opened).

Typical connection diagram

The diagram below shows an external 24V power supply and two loads connected to the outputs of Tibbit #58.