WEG PLC300 User Manual - page 18
Connections
4-2 | PLC300
24 Vcc
XC1
24 Vcc
PNP
XC1
PNP or NPN
DI
1
1
7
4
10
2
8
5
11
12
13
14
3
9
6
DI
9
DI
5
DI
3
COM
1
COM
2
AI1
(+)
AI1
(-)
DI
7
DI
2
DI
10
DI
6
DI
4
DI
8
(-)
(-)
(+)
(+)
Figure 4.2: Example of connection of the digital inputs (XC1)
Notes about the example:
1. Inputs DI1 to DI8 are bidirectional, that is, they can operate as NPN or PNP. The fast
inputs DI9 and DI10 are PNP.
2. PNP is the type of input whose common is connected to the GND and the input is
excited by the VDC.
3. NPN is the type of input whose common is connected to the VDC and the input is
excited by the GND.
Encoder function DI9 and DI10:
Inputs DI9 and DI10 can also operate for the reading on an encoder in quadrature or to
count pulses.
In case of quadrature, connect signal A of the encoder to the input DI9, and signal B to
input DI10.
For pulse count, input DI9 will determine the count direction (incrementing or decrementing)
and input DI10 will receive the pulses.
Those configurations should be performed via WPS.
4.4 DIGITAL OUTPUTS
The PLC300 has eight insulated and protected digital outputs, besides a fast PWM output
that can generate pulses of up to 300 kHz with variable duty cycle from 0 to 100 %.
This output can also be used as a standard digital output, but it is not protected.