Siemens Simatic RTU303xC Series Operating Instructions Manual page 76

Connecting up, installation, commissioning
3.7 Connecting up the RTU
You can connect two actuators to each of the two terminal blocks of the digital outputs. In
total, up to 4 actuators can be connected.
Assignment of the contacts based on the example of terminal block X30 for digital outputs 0
and 1:
● 0L / 0 Output 0
● 1L / 1 Output 1
Terminal block X31 is assigned accordingly, for digital outputs 2+3.
Figure 3-2
For the power supply of the connected actuators, you can use the control outputs X10 or
X11 of the RTU.
Connecting the digital outputs X32 to X33 (RTU3031C)
The outputs are designed as electronic relays that switch through the signal of the relevant
connector 4 / 5 / 6 / 7 (reference potential) to the output 4L / 5L / 6L / 7L.
The terminals 4 / 5 / 6 / 7 can be supplied with voltage via the control outputs X10/X11 of the
RTU if this is configured. You specify the voltage value of control outputs X10/X11 in the
WBM ("Operating mode" > "Power supply") for the outputs X10, X11, X40 and X42 together.
You can connect two actuators to each of the two terminal blocks X32 and X33. In total, up
to 4 actuators can be connected.
Assignment of the contacts based on the example of terminal block X32 for digital outputs 4
and 5:
● 4L / 4 Output 4
● 5L / 5 Output 5
Terminal block X33 is assigned accordingly for digital outputs 6+7.
76
Wiring of digital outputs X30 to X31
Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC