2-channel digital input terminal thermistor  KL1382
Signal LED1
Error LED1
Signal LED2
Error LED2
Power contact
+24 V
Power contact 0 V
+Input 1
-Input 1
+Input 2
+24 V
0 V
-Input 2
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range

KL1382 | 2-channel digital input terminal thermistor

The digital KL1382 input terminal analyses the input signal of thermistor sensors with the aid of a current loop and a voltage < 5 V. The KL1382 is a monitoring device for the thermal machine protection of PTC sensors, suitable for the direct monitoring of motors, bearings and equipment. In the process image, the state of the sensor is indicated by one bit each. A further bit reports short-circuits or line interruptions. Red or green LEDs indicate the state of the two input bits.

Technical data KL1382 | KS1382
Connection technology 2-wire
Specification thermistor PTC
Number of inputs 2
Nominal voltage 24 V (-15 %/+20 %)
“0“ signal voltage ≤ 1.5 kΩ
“1“ signal voltage ≥ 3 kΩ
Signal “0“ release ≤ 1.5 kΩ
Signal “1“ excess temperature ≥ 3 kΩ
Sensor voltage ≤ 5 V
Diagnostics open-circuit monitoring > 8 kΩ, short-circuit diagnostic < 25 Ω
Input filter 30 ms
Current consumpt. K-bus typ. 60 mA
Electrical isolation 500 V (K-bus/field potential)
Bit width in the process image 4 inputs
Configuration no address or configuration setting
Special features monitoring device for thermal machine protection
Weight approx. 55 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
Pluggable wiring for all KSxxxx Bus Terminals
Approvals CE, UL, Ex, GL