2-channel digital input terminal 24 V DC, positive/ground switching KL1052
Signal LED 1
Signal LED 2
Power contact
+24 V
Power contact 0 V
Power contact PE
Input 1
Input 2
+24 V
0 V
PE
Top view 
Contact assembly 
extended shock and vibration range 25g

KL1052 | 2-channel digital input terminal 24 V DC, positive/ground switching

The KL1052 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 unit. Positive or ground switching sensors can be connected to the KL1052. The Bus Terminal contains two channels that indicate their signal state by means of light emitting diodes.

Technical data KL1052, KS1052
Connection technology 4-wire
Specification positive/ground switching
Number of inputs 2
Nominal voltage 24 V DC (-15 %/+20 %)
“0” signal voltage 7.6…17.4 V
“1” signal voltage 0…7 V and 18…30 V
Input filter typ. 3.0 ms
Input current typ. 3.0 mA
Current consumption K-bus typ. 8 mA
Electrical isolation 500 V (K-bus/field potential)
Bit width in the process image 2 inputs
Configuration no address or configuration setting
Weight approx. 50 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
Pluggable wiring for all KSxxxx Bus Terminals
Approvals/markings CE, UL, ATEX
Ex marking II 3 G Ex nA IIC T4 Gc
Ordering information
KL1052 2-channel digital input terminal 24 V DC, positive/ground switching, filter 3.0 ms, 4-wire system
KL1052-0010 96 V DC positive/ground switching, not in accordance with the EN 61131-2 specifications: I high = 3 mA, I low = 0.5 mA