Control unit contains inputs and outputs or, in other words, I/O pins of many different types. There are, for example, outputs which source current and outputs which sink current. Furthermore, there are I/O pins which can be used as inputs or as outputs at the control of the application programmer.
The following table contains a summary of configurable I/O pins in Epec 3720 control unit:
Max |
Pin Type |
Info |
DI |
AI |
FB |
PI |
DO |
PWM |
|
PNP (sourcing) |
NPN (sinking) |
||||||||
8 |
3 A, pull-down to GND |
x |
|
|
|
x |
|
x |
|
16 |
3 A, pull-up to +24 V |
x |
|
|
|
x |
|
x |
|
20 (10 pairs) |
|
|
x |
|
|
|
|
||
1 |
0-5 V / 0-22 mA |
x |
x |
|
|
|
|
|
|
5 |
0-5 V / 0-22 mA |
x |
x |
|
|
|
|
|
|
9 |
pull-up to +5 V |
x |
|
|
x |
|
|
|
|