Beckhoff KL3021 Bus Terminal 2-channel analog input

Beckhoff KL3021 Bus Terminal 2-channel analog input

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.

Product information

Technical data:KL3021

Number of inputs:1

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

Housing data Beckhoff KL3021 Bus Terminal 2-channel analog input

Design form:compact terminal housing with signal LEDs:terminal housing with pluggable wiring level

Material:polycarbonate

Dimensions (W x H x D):12 mm x 100 mm x 68 mm

Installation:on 35 mm DIN rail, conforming to EN 60715 with lock

Side by side mounting by means of:double slot and key connection

Marking:labeling of the BZxxx series

Wiring:solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver