Connecting Logo! Inputs - Siemens LOGO! Manual

2.3.3

Connecting LOGO! inputs

Requirements
At the inputs you connect sensor elements such as: momentary pushbuttons, switches, light
barriers, daylight control switches etc.
Sensor characteristics for LOGO!
LOGO! 12/24RC
LOGO! 12/24RCo
I3 ... I6
Signal status 0 < 5 V DC
Input current < 0.85 mA
Signal status 1 > 8.5 V DC
Input current > 1.5 mA
LOGO! 24RC (AC)
LOGO! 24RCo (AC)
LOGO! DM8 24R (AC)
Signal status 0 < 5 V AC
Input current < 1.0 mA
Signal status 1 > 12 V AC
Input current > 2.5 mA
LOGO! DM16 24R
Signal status 0 < 5 V DC
Input current < 1.0 mA
Signal status 1 > 12 V DC
Input current > 2.0 mA
Note
The digital inputs of LOGO! 230RC/230RCo and of expansion module DM16 230R are
divided into two groups, each consisting of four inputs. Within the same group, all inputs
must be operated on the same phase. Different phases are only possible between the
groups.
Example: I1 to I4 on phase L1, I5 to I8 on phase L2.
Inputs within the LOGO! DM8 230R may not be connected to different phases.
LOGO!
Manual, 10/2017, A5E01248535-AA
LOGO! 24/24o
LOGO! 24C/24Co
I1,I2,I7,I8 I3 ... I6
< 5 V DC < 5 V DC
< 0.05 mA < 0.85 mA
> 8.5 V DC > 12 V DC
> 0.1 mA > 2 mA
LOGO! 24RC (DC)
LOGO! 24RCo (DC)
LOGO! DM8 24R (DC)
< 5 V DC
< 1.0 mA
> 12 V DC
> 2.5 mA
LOGO! DM16 24
< 5 V DC
< 1.0 mA
> 12 V DC
> 2.0 mA
LOGO! installation and wiring
LOGO! DM8
12/24R
I1,I2,I7,I8 I1 ... I8
< 5 V DC < 5 V DC
< 0.05 mA < 0.85 mA
> 12 V DC > 8.5 V DC
> 0.15 mA > 1.5 mA
LOGO! 230 RC (AC)
LOGO! 230 RCo (AC)
LOGO! DM8 230R (AC)
< 40 V AC
< 0.03 mA
> 79 V AC
> 0.08 mA
LOGO! DM16 230R (AC)
< 40 V AC
< 0.05 mA
> 79 V AC
> 0.08 mA
2.3 Wiring LOGO!
LOGO! DM8
24
I1 ... I8
< 5 V DC
< 0.85 mA
> 12 V DC
> 2 mA
LOGO! 230 RC (DC)
LOGO! 230RCo (DC)
LOGO! DM8 230R (DC)
< 30 V DC
< 0.03 mA
> 79 V DC
> 0.08 mA
LOGO! DM16 230R (DC)
< 30 V DC
< 0.05 mA
> 79 V DC
> 0.08 mA
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