Agito AGD155, Product Manual

Page: 42 / 57

Electrical Interfaces
AGD155 Product Manual Rev.2.2 Page 42

Dedicated digital ground: GND (pin 10 connector X6) must be connected to GND of the
controller/PLC. PE is not used for digital ground.

Each differential input has a 120
Ω
terminator.

Each differential input has a pull-up to 3.3V on its positive pin, and a pull-down to GND on its
negative pin. This ensures that the input is not floating when not connected and that its reading
is known and fixed.

The negative input pin on each differential input also has also a pull-up to 3.3V. This enables use
of a differential input with a single-ended source, by connecting it to the positive input only and
leaving the negative pin disconnected.

The differential inputs can be used with 5V differential sources.
Differential Outputs 1 to 4
Figure 29. Differential Outputs 1 to 4

Dedicated digital ground: GND (pin 10 connector X6) shall be connected to controller/PLC GND.
PE is not used for digital ground.

The differential outputs are inactive during power on, until they are controlled by the drive
firmware and the user parameters.
Bi-Directional Differential I/O
Figure 30. Bi-Directional Differential I/O

Dedicated digital ground: GND (pin 10 connector X6) must be connected to GND of the
controller/PLC. PE is not used for digital ground.

The bi-directional differential output is configurable by software to be differential output or
differential input.

Both + and - pins are pulled up to 3.3V.

There is a 120
Ω
termination resistor between the + and - pins.