HD Bus Terminal, 8-channel digital input + 8-channel digital output 24 V DC KL1859
Signal LEDs
1…8
Signal LEDs
9…16
Power contact
+24 V
Power contact 0 V
Input 1 
Input 2 
Input 3 
Input 4 
Input 5 
Input 6 
Input 7 
Input 8 
Output 1
Output 2
Output 3
Output 4
Output 5
Output 6
Output 7
Output 8
Top view 
Contact assembly 
extended shock and vibration range

KL1859 | HD Bus Terminal, 8-channel digital input + 8-channel digital output 24 V DC

The digital KL1859 Bus Terminal combines eight digital inputs and eight digital outputs in one device. The inputs have a filter of 3.0 ms. The outputs process load currents up to 0.5 A, are short-circuit-proof and protected against polarity reversal. The signal states are displayed by LEDs.

The reference ground for all inputs is the 0 V power contact, the outputs are fed via the 24 V power contact. The conductors 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 KL1859
Connection technology 1-wire
Specification EN 61131-2, type 1/3
Number of channels 8 inputs + 8 outputs
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)
Load type ohmic, inductive, lamp load
Max. output current 0.5 A (per channel)
Reverse voltage protection yes
Current consumpt. K-bus typ. 25 mA
Current consumption power contacts typ. 15 mA + load
Electrical isolation 500 V (K-bus/field potential)
Bit width in the process image 8 inputs + 8 outputs
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 0…+55 °C/-25…+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