Connecting The Power Supply - Siemens LOGO! Manual

2.3.1

Connecting the power supply

The 230-V versions of LOGO! are suitable for operation with rated voltages of 115 V AC/DC
and 240 V AC/DC. The LOGO! 24-V and 12-V versions can be operated with a 24 VDC, 24
V AC or 12 V DC power supply. For information on permissible voltage tolerances, line
frequencies and power consumption, refer to the installation instructions in the Product
Information supplied with your device and to the technical data in Appendix A.
The CM EIB/KNX has been designed as a communication module for the LOGO! controller
and must be supplied with a mains voltage of 12/24 V AC/DC.
The AS Interface bus requires a special AS Interface power supply (30 V DC) that enables
simultaneous transmission of data and power for the encoders via a single line.
The LOGO! TD must be supplied with a voltage of 12 V DC or 24 V AC/DC.
Note
A power failure might cause an additional edge triggering signal at the special functions. The
stored data will be from the last uninterrupted cycle.
Connecting LOGO!
To connect LOGO! to the power supply:
Note
LOGO! is a double-insulated switchgear. You do not need to connect an equipment
grounding conductor.
LOGO!
Manual, 10/2017, A5E01248535-AA
LOGO! installation and wiring
2.3 Wiring LOGO!
37