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KL3021, KS3021, KL3022, KS3022 | 1-, 2-channel analog input terminals 4…20 mA

 

The KL3021 and KL3022 analog input terminals handle signals in the range from 4 to 20 mA. The current is digitised to a resolution of 12 bits and is transmitted, in an electrically isolated form, to the higher-level automation device. The input channels of the Bus Terminals have differential inputs and possess a common, internal ground potential. The KL3021 is the single-channel variant and is characterised by its fine granularity and electrical isolation. The KL3022 combines two channels in one 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 and a broken wire.

Technical data KL3021 | KS3021 KL3022 | KS3022
Number of inputs 1 2
Power supply via the K-bus
Signal current 4…20 mA
Technology differential input
Internal resistance 80  Ω + 0.7 V
Common-mode voltage UCM 35 V max.
Resolution 12 bits
Conversion time ~ 1 ms ~ 2 ms
Measuring error max ± 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: 1 x 16 bit data (1 x 8 bit control/status optional) input: 2 x 16 bit data (2 x 8 bit control/status optional)
Weight approx. 70 g
Operating/storage temperature 0…+55 °C/-25…+85 °C -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27/29
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

Special terminals  
KL3022-0010 Siemens S5 format
KL3022-0011 fast µP, scan time approx. 0.5 ms
KL3022-0050 Siemens S7 format

 

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