The RP-V-4A model has four I/O points and the controller is equipped with 11 fixed screw terminals.
Recommended screw tightening torque: 0.56 to 0.79 Nm (5 to 7 lbf.in)
The 11 screw terminals are used as follows:
Two screw terminals for the power input
One screw terminal for earth ground input
Eight screw terminals for the four universal inputs/outputs of type Ub
Terminal number |
Designation |
Usage |
Power input |
|
|
1 |
L |
Line (L) lead, 24 VAC, 50/60 Hz, 18 VA |
2 |
N |
Neutral (N) lead, 24 VAC, 50/60 Hz, 18 VA |
3 |
|
Earth ground Internally connected to signal ground and all RET terminals |
Universal inputs/outputs |
|
|
4 |
Ub1 |
Universal input/output, type Ub |
5 |
RET |
Internally connected to all earth ground and RET terminals |
6 |
Ub2 |
Universal input/output, type Ub |
7 |
Ub3 |
Universal input/output, type Ub |
8 |
RET |
Internally connected to all earth ground and RET terminals |
9 |
Ub4 |
Universal input/output, type Ub |
10 |
RET |
Internally connected to all earth ground and RET terminals |
11 |
RET |
Internally connected to all earth ground and RET terminals |