2-channel analog input terminal 0…20 mA KL3112
Run LED1
Error LED1
Run LED2
Error LED2
+Input 1
-Input 1
Ground
Shield
+Input 2
-Input 2
Ground
Shield
Top view 
Contact assembly 
extended shock and vibration range

KL3112 | 2-channel analog input terminal 0…20 mA

The KL3112 analog input terminal handles signals in the range from 0 to 20 mA. The current is digitised to a resolution of 16 bits (the default is 15 bits), and is transmitted, in an electrically isolated form, to the higher-level automation device. The input channels of the Bus Terminal have differential inputs and possess a common, internal ground potential. The KL3112 combines two channels in a housing. An open lead or overload condition are detected, and the terminal status is relayed to the controller via the K-bus. The run LEDs give an indication of the data exchange with the Bus Coupler. The error LEDs indicate an overload condition.

Technical data KL3112 | KS3112
Number of inputs 2
Power supply via the K-bus
Signal current 0…20 mA
Technology differential input
Internal resistance 50 Ω typ. shunt, load: 60 Ω + diode voltage
Common-mode voltage UCM 35 V max.
Resolution 15 bit, configurable to 16 bit
Conversion time 140 ms, configurable to 2 ms
Filter 50 Hz, configurable
Measuring error < ±0.3 % (relative to full scale value)
Surge voltage resistance 35 V DC
Electrical isolation 500 V (K-bus/signal voltage)
Current consumption power contacts – (no power contacts)
Current consumpt. K-bus typ. 60 mA
Bit width in the process image input: 2 x 16 bit data (2 x 8 bit control/status optional)
Configuration no address or configuration setting
Weight approx. 70 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
Special terminals
KL3112-0050 Siemens S7 format