WBE-DO-OC-2: Dual Open-Collector Output Module
The module is designed to control dry contact inputs, as well as for switching low-voltage load.
The module contains two N-channel transistors with common ground.
Each channel has built-in protection against voltage surges when switching inductive load (TVS for 30V).
The ground (GND) of the load must be connected to the GND terminal of the module (O3 terminal of the extension module).
|Number of outputs||2|
|Output type||N-channel field effect transistor
|Contact configuration||SPST (normally open)|
|Maximum switching voltage||30V DC|
|Maximum switching current, per channel||2A'|
|The channel resistance in the open state||40 mOhm|
|Voltage isolation between the controller and the output||no|
|Maximum power consumption||0.01 W|
|Compatibility||Compatible with Wiren Board 5 of all revisions.
Can be installed into both extension slots.
Configuration of the web interface is carried out in the section Configs => Hardware Modules Configuration.
Select "WBE-DO-OC-2: Dual Open-Collector Output Module" in the Internal slot 1 or 2 section (depending on the slot number) and click Save.
Once added, two additional outputs appear in the Devices next to the controller outputs (the Discrete I/O section).
When adding a device is detected immediately, a reboot is not required.
|Slot||Terminal||Output||Channel (MQTT)||Topic (MQTT)|
The load is connected as follows: "plus" load is connected to the power supply, "minus" is connected to the transistor output. For the load to start working, you need to apply a high level to the gate of the transistor.
The illustrations show the wiring diagrams of the LED and relay.
The relay control signals are on the SDA (K1) and SCL (K2) contact of the extension module.