2-channel analog input, 2-channel analog output terminal -10…+10 V KL4494
Run LED4
Run LED2
Run LED3 
Run LED1 
Power contact
+24 V
Power contact 0 V
Input 1
Ground
Output 1
Ground
Input 2
Ground
Output 2
Ground
Top view 
Contact assembly 
extended shock and vibration range

KL4494 | 2-channel analog input, 2-channel analog output terminal -10…+10 V

The KL4494 Bus Terminal combines two analog inputs and two analog outputs in one housing and can process signals in the range between -10 to +10 V. The voltage is digitised to a resolution of 12 bits and is transmitted, electrically isolated, to the higher-level automation device or to the process level. The input and output channels of the Bus Terminal have a common ground potential. The run LEDs give an indication of the data exchange with the Bus Coupler.

Technical data KL4494 | KS4494
Technology single-ended
Number of outputs 2 outputs + 2 inputs
Number of inputs 2
Power supply via the K-bus
Signal voltage -10…+10 V
Internal resistance input > 130 kΩ
Load > 5 kΩ (short-circuit-proof)
Output error < ±0.3 % (relative to end value)
Resolution 12 bit
Conversion time < 2 ms
Electrical isolation 500 V (K-bus/signal voltage)
Current consumption power contacts only load
Current consumption K-bus typ. 70 mA
Bit width in the process image input/output: 2 x 16 bit data
Special features input/output terminal
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 CE, UL, Ex
Product announcement
KL4494: available
KS4494: estimated market release on request