BECKHOFF KL3444 Bus Terminal Analog Input Module

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Manufacturer: BECKHOFF
Product No.: KL3444
Country of origin:Germany
Product Type: Bus Terminals
Payment: T/T, Western Union
Weight: 55g
Dimensions: 12 mm x 100 mm x 68 mm
Shipping port: Xiamen
Warranty: 12 months

Description

Engineered for processing standardized analog current signals, the Beckhoff KL3444 Bus Terminal processes signals in the 0 to 20 mA range with high-resolution acquisition. This compact, 12 mm wide module features four single-ended input channels, making it optimal for spaced-constrained control cabinets requiring multi-channel density. The device derives its power directly from the internal K-bus system, enabling seamless communication with the master PLC or industrial PC coupler. Utilizing 12-bit digital resolution, the module ensures accurate transmission of system variables to the controller. A robust design featuring 500 V galvanic isolation between the K-bus and the field signal inputs guarantees system stability and protects sensitive control-side electronics from external electrical disturbances.

Features

Four single-ended analog input channels operating in the 0 to 20 mA range.
Fast conversion time of approximately 2 ms for real-time monitoring.
Galvanic isolation of 500 V between the K-bus and the input signal lines.
Compact KL-12-8pin housing with integrated status LEDs for quick diagnostic checks.
Tool-free mounting on 35 mm DIN rails via double slot-and-key connection.
Spring-clamp termination for quick, vibration-resistant field wiring.

Applications

Process manufacturing and chemical plant signal monitoring.
Water and wastewater pressure/flow sensor integration.
Machine building and factory automation telemetry.
HVAC control and environmental monitoring systems.

Ordering Information

Model / Part Number	Description
KL3444	Bus Terminal, 4-channel analog input, current, 0 to 20 mA, 12 bit, single-ended
KS3444	Bus Terminal, 4-channel analog input, current, 0 to 20 mA, 12 bit, single-ended, pluggable wiring

Technical Specifications

Parameter	Specification
Manufacturer	BECKHOFF
Part Number / Model	KL3444
Number of Inputs	4
Signal Current	0 to 20 mA
Technology	Single-ended
Internal Resistance	< 85 Ohm
Conversion Time	~ 2 ms
Resolution	12 bit
Measuring Error	< +/-0.3% (relative to full scale value)
Surge Voltage Resistance	30 V DC
Electrical Isolation	500 V (K-bus / signal voltage)
Current Consumption K-bus	typ. 85 mA
Bit Width in Process Image	Input: 4 x 16 bit data (4 x 8 bit control/status optional)
Weight	approx. 55 g
Operating Temperature	0 to +55 degC
Storage Temperature	-25 to +85 degC
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
Protection Class	IP20
Housing Dimensions (W x H x D)	12 mm x 100 mm x 68 mm

Installation Guidelines

Mounting: Snap securely onto a standard 35 mm DIN rail (conforming to EN 60715). Ensure the locking mechanism is engaged.
Wiring: Use solid (0.08 to 2.5 mm²), flexible (0.08 to 2.5 mm²), or ferruled (0.14 to 1.5 mm²) conductors. Push a suitable screwdriver into the spring release to insert the wire.
Shielding: Route signal lines away from high-power distribution lines. Use shielded cables in high-noise environments to ensure signal integrity.
Ventilation: Maintain standard operating spacing around the module to prevent thermal buildup, ensuring ambient temperature remains below +55 degC.

Compliance and Certifications

CE
UL
ATEX: II 3 G Ex nA IIC T4 Gc
DNV GL

Key Features:

#Bus Terminals

What is the signal range of the Beckhoff KL3444 analog input module?

The Beckhoff KL3444 processes standard analog current signals in the range of 0 to 20 mA.

What is the difference between the KL3444 and the KS3444?

The KL3444 has standard terminal connections, while the KS3444 features a pluggable wiring interface for easier module replacement without disconnecting individual wires.

Does the KL3444 require an external power supply?

No, the KL3444 is powered internally via the standard Beckhoff K-bus interface, consuming typically 85 mA.

What is the conversion speed and resolution of the KL3444?

The module features a 12-bit resolution and a fast conversion time of approximately 2 ms.

Is the KL3444 suitable for hazardous environments?

Yes, the KL3444 is certified with ATEX Ex marking II 3 G Ex nA IIC T4 Gc for use in Zone 2 hazardous locations.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin

BECKHOFF KL3444 Bus Terminal Analog Input Module