Setting the Digital I/O Power Terminal (TBPWR)

VIO and GIO are power terminals used for the safety controller digital I/O located in the front of the controller and are separated from the VCC24V and GND that supply SMPS inside the controller. If the user uses a current of 2A or less for the configurable digital I/O, and if there is no insulation for the connected I/O device and controller, the internal power supply of the controller can be used as the I/O power supply, as shown in the figure below. (factory default setting)

If a current greater than 2 A is required, It will be necessary to connect a separate external power source (24V) using VIO and GIO terminals.

When VIO power is supplied, the IOPW (green) LED on top of the TBPWR lights up.

Caution

• Make sure to turn off the external power source (SMPS) when turning off the power for the controller.

Note

• If a current greater than 2A is connected to the VCC and GND of TBPWR, the fuse in front of the terminal power output shorts to ensure the safety of the controller internal system connected to the same SMPS.
• If a current greater than 2A is required for the configurable digital I/O, make sure to connect an external power source (24V) to VIO and GIO.