KL3021 | Bus Terminal, 1-channel analog input, current, 4…20 mA, 12 bit, differential

KL3021 | Bus Terminal, 1-channel analog input, current, 4…20 mA, 12 bit, differential

The KL3021 analog input terminal handles signals in the range from 4 to 20 mA. The current is digitized 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 Terminal have differential inputs and possess a common, internal ground potential. The KL3021 is characterized by its fine granularity and electrical isolation. 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.

Power supply via the K-bus

Signal current 4…20 mA

Technology differential input

Internal resistance 80 Ω + diode voltage 0.7 V

Common-mode voltage UCM max. 35 V

Conversion time ~ 1 ms

Resolution 12 bit

Measurement error/ uncertainty < ±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 consumption K-bus typ. 60 mA

Bit width in the process image input: 1 x 16 bit data (1 x 8 bit control/status optional)

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. rating/installation pos. IP20/variable

Approvals/markings CE, UL, ATEX, IECEx, DNV GL

Pluggable wiring for all KSxxxx Bus Terminals

Ex marking ATEX:

II 3 G Ex ec IIC T4 Gc

IECEx:

Ex ec IIC T4 Gc 

>>> Refer to technical document: kl301x_kl302xen