2-channel digital input terminal 120/230 V AC KL1702
Signal LED 1
Power contact
120 V/230 V
Power contact 0 V
Power contact PE
Input 1
Input 2
120 V/230 V
0 V
Top view 
Contact assembly 

KL1702 | 2-channel digital input terminal 120/230 V AC

The KL1702 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. It is possible to connect 120 V/230 V AC sensors directly. The Bus Terminal contains two channels that indicate their signal state by means of light emitting diodes.

Technical data KL1702 | KS1702
Connection technology 4-wire
Number of inputs 2
Nominal voltage 120/230 V AC
“0” signal voltage 0…40 V
“1” signal voltage 79…260 V
Input filter typ. 10 ms
Input current > 3 mA, typ. 6 mA
Current consumption K-bus typ. 3 mA
Switching times 10 ms
Electrical isolation 500 V (K-bus/mains voltage); 3750 V AC, 1 min.
Bit width in the process image 2 inputs
Configuration no address or configuration setting
Special features ohmic/capacitive input behaviour
Weight approx. 60 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, GL
Ex marking II 3 G Ex nA IIC T4 Gc
Ordering information
KL1702 2-channel digital input terminal 120 V AC to 230 V AC, 4-wire system
KL1702-0010 230 V AC input circuit with type 2 characteristics