WEG PLC300, User Manual, Page: 17 / 76

Connections
PLC300 | 4-1
4 CONNECTIONS
4.1 SUPPLY
The PLC300 must be powered by a power supply of 24 Vdc ± 15 % with capacity of at
least 500 mA.
The grounding connection is important.
1 2 3
Figure 4.1: XC8: Power connector of the PLC300
4.2 CAN NETWORK
See the CANopen manual.
4.3 DIGITAL INPUTS
The 10 insulated digital inputs must be excited by an external source of 24 Vdc. The inputs
are bidirectional, which means the input common can be connected to either the GND or
the VDC of the supply.
Two common pins are provided: one for DI1 to DI8 and another for DI9 to DI10.
Thus, you can connect one group in VDC and another in the GND, providing more flexibility
to the project by allowing both contacts NPN and PNP of any device to be connected to
the PLC300 inputs.
All the DIs can generate interruption in the user program and can be used as count task.
The DIs 9 and 10 are faster and can read a signal of up to 100 kHz, and they can also
operate as encoder input. The other DIs can count up to 4 kHz.
The drive levels for the DIs are from 10 to 30 Vdc for high level and less than 3 Vdc for
low level.