1-channel analog output terminal 4…20 mA KL4021
Run LED1
Power contact
+24 V
Power contact 0 V
+Output 1
Shield
+24 V
0 V
Shield
Top view 
Contact assembly 
extended shock and vibration range

KL4021 | 1-channel analog output terminal 4…20 mA

The KL4021 analog output terminal generates analog output signals in the range from 4 to 20 mA. The power is supplied to the process level with a resolution of 12 bits and is electrically isolated. Ground potential for the output channels of a Bus Terminal is common with the 24 V DC supply. The output stages are powered by the 24 V supply. The run LEDs give an indication of the data exchange with the Bus Coupler.

Technical data KL4021 | KS4021
Technology single-ended
Number of outputs 1
Power supply 24 V DC via power contacts (alternative 15 V DC with power supply terminal KL9515)
Signal current 4…20 mA
Load < 500 Ω
Output error < ±0.1 % (relative to end value)
Resolution 12 bit
Conversion time ~ 1.5 ms
Electrical isolation 500 V (K-bus/signal voltage)
Current consumption power contacts typ. 30 mA + load
Current consumption K-bus typ. 60 mA
Bit width in the process image output: 1 x 16 bit data (1 x 8 bit control/status optional)
Configuration no address or configuration setting
Weight approx. 80 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 CE, UL, Ex, GL