User Manual

LOGO! installation and wiring
2.3 Wiring LOGO!
LOGO!
38 Manual, 06/2014, A5E33039675
The LOGO! TDE must be supplied with a voltage of 12 VDC or 24 VAC/VDC.
CAUTION
Expansion modules DM8 230R and DM16 230R must be operated with the same type of
power supply (DC or AC) as for the connected 230 V version of the LOGO! Base Module.
The same supply output "+/- "on DC power supplies or "N/L" on AC power supplies must
connect to the same phase on both the expansion module DM8/16 230R and the
connected LOGO! 230 .... Failure to follow the instructions could result in personal injury.
Note
A power f
ailure might cause an additional edge triggering signal at the special functions. The
stored data will be from the last uninterrupted cycle.
Connecting LOGO!
Connect LOGO! to the power supply as shown below, depending on whether your power
supply is DC or AC:
Note
LOGO! is a double
-insulated switchgear. You must connect its FE terminal to earth ground.
Circuit protection with AC voltage
To suppress voltage peaks on the power supply lines, you can install a metal oxide varistor
(MOV). Make sure the operating voltage of the varistor (MOV) used lies at least 20% above
the rated voltage (for example S10K275).