2-channel digital input terminal 24 V DC with edge triggered pulse expansion KL1232
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

KL1232 | 2-channel digital input terminal 24 V DC with edge triggered pulse expansion

The KL1232 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. The KL1232 has an input circuit that extends plus-switched signals, triggered on the rising edge, to 100 ms. The Bus Terminal contains two channels that indicate their signal state by means of LEDs. The KL1232 is particularly suitable for recording very short signals in control systems with a longer processing time than the signal length.

Technical data KL1232, KS1232
Connection technology 4-wire
Specification pulse expansion
Number of inputs 2
Nominal voltage 24 V DC (-15 %/+20 %)
“0” signal voltage -3…+5 V
“1” signal voltage 15…30 V
Input filter 0.2 ms
Input current typ. 5 mA
Pulse expansion 100 ms
Current consumption K-bus typ. 5 mA
Electrical isolation 500 V (K-bus/field potential)
Bit width in the process image 2 inputs
Configuration no address or configuration setting
Special features edge triggered pulse expansion
Weight approx. 55 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
KL1232 2-channel digital input terminal 24 V DC, filter 0.2 ms, 4-wire system
with edge triggered puls expansion 100 ms
KL1232-0001 positive switching, positive edge-triggered input, 10 ms pulse extension, input filter 0.2 ms
KL1232-0002 positive switching, positive edge-triggered input, 20 ms pulse extension, input filter 0.2 ms
KL1232-0010 positive switching, positive edge-triggered input, 100 ms pulse extension, input filter 3.0 ms
KL1232-0100 positive switching, negative edge-triggered input, 100 ms pulse extension, input filter 0.2 ms
KL1232-0110 positive switching, negative edge-triggered input, 100 ms pulse extension, input filter 3.0 ms
KL1232-1000 ground switching, positive edge-triggered input, 100 ms pulse extension, input filter 0.2 ms
KL1232-1001 5 V, ground switching, negative edge-triggered input, 20 ms pulse extension, input filter 0.2 ms
KL1232-1010 ground switching, positive edge-triggered input, 100 ms pulse extension, input filter 3.0 ms
KL1232-1100 ground switching, negative edge-triggered input, 100 ms pulse extension, input filter 0.2 ms
KL1232-1110 ground switching, negative edge-triggered input, 100 ms pulse extension, input filter 3.0 ms
KL1232-2000 positive switching, positive edge-triggered input, 200 ms pulse extension, input filter 0.2 ms