Siemens LOGO! Series - Connecting the LOGO! TD Power Supply

LOGO! installation and wiring
2.3 Wiring LOGO!
LOGO!
48 Manual, 04/2011, A5E03556174-01
2.3.2 Connecting the LOGO! TD power supply
The LOGO! TD must be connected to an external power supply that supplies a voltage of 12
V DC or 24 V AC/DC. A power connector is included with the LOGO! TD.
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① Power supply
② Communication interface
The power connection is non-polar. If you connect a DC power supply to the LOGO! TD, you
can connect the positive supply wire or negative supply wire to either the left or right side.
Note
Siemens recommends that you protect the LOGO! TD with a 0.5 A safety fuse on the power
supply.