Output Wiring

Connect the output signals to a current-driven controlled device such as a relay or LED. The connection requires an external power supply to feed currents. The board controls turning on/off the current-driven controlled device using a digital value.

The output circuits of interface blocks of the DIO-1616RL-PE are illustrated above. The signal output section is an opto-coupler isolated output (current source type). Driving the output section requires an external power supply. The rated output current per channel is 100mA at maximum. A zener diode is connected to the output transistor for protection from surge voltages. A PolySwitch-based over-current protector is provided for every eight output transistors. When the over-current protector works, the output section of the board is temporarily disabled. If this is the case, turn of the power to the PC and the external power supply and wait for a few minutes, then turn them on.

Important: When the PC is turned on, all outputs are reset to OFF.

Example of connection to an LED: