HD Bus Terminal, 8-channel digital input 24 V DC, 2-wire connection KL1808
Signal LEDs
1…8
Power contact
+24 V
Power contact 0 V
Input 1 
Input 2 
Input 3 
Input 4 
Input 5 
Input 6 
Input 7 
Input 8 
+24 V
+24 V
+24 V
+24 V
+24 V
+24 V
+24 V
+24 V
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range

KL1808 | HD Bus Terminal, 8-channel digital input 24 V DC, 2-wire connection

The KL1808 digital input terminal acquires the binary control signals from the process level and transmits them, in an electrically isolated form, to the higher-level automation device. The Bus Terminal contains eight channels, consisting of a signal input and 24 V DC. The signal states are displayed by LEDs. The power contacts are looped through.

For the KL1808 Bus Terminal, the reference ground for all inputs is the 0 V power contact. The wires can be connected without tools in the case of solid wires using a direct plug-in technique.

The HD Bus Terminals (High Density) with increased packing density feature 16 connection points in the housing of a 12 mm terminal block.

Technical data KL1808
Connection technology 2-wire
Specification EN 61131-2, type 1/3
Number of inputs 8
Nominal voltage 24 V DC (-15 %/+20 %)
“0“ signal voltage -3…+5 V (EN 61131-2, type 1/3)
“1“ signal voltage 11…30 V (EN 61131-2, type 3)
Input filter typ. 3.0 ms
Input current typ. 3 mA (EN 61131-2, type 3)
Current consumption K-bus typ. 15 mA
Current consumption power contacts typ. 2 mA + load
Electrical isolation 500 V (K-bus/field potential)
Bit width in the process image 8 inputs
Configuration no address or configuration setting
Conductor types solid wire, stranded wire and ferrule
Conductor connection solid wire conductors: direct plug-in technique; stranded wire conductors and ferrules: spring actuation by screwdriver
Rated cross-section solid wire: 0.08…1.5 mm²; stranded wire: 0.25…1.5 mm²; ferrule: 0.14…0.75 mm²
Weight approx. 60 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable (see documentation)
Approvals CE, UL, Ex, GL