BECKHOFF KS3444 Bus Terminal 4-Channel Analog Input Module

Q: What is the primary difference between the Beckhoff KL3444 and the KS3444?

The KS3444 features a pluggable wiring level, allowing the terminal block connector to be detached from the main housing without disconnecting individual field wires. The KL3444 has a fixed wiring level.

Q: Does the KS3444 require an external power supply for K-bus communication?

No, the KS3444 is powered directly via the K-bus backplane from the bus coupler or controller, drawing a typical current of 85 mA.

Q: Is the Beckhoff KS3444 suitable for hazardous locations?

Yes, the KS3444 is ATEX certified with Ex marking II 3 G Ex nA IIC T4 Gc, making it suitable for Zone 2 hazardous areas when installed in an appropriate enclosure.

SKU KS3444

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12-month warranty
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Manufacturer: BECKHOFF
Product No.: KS3444
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

Industrial processing systems utilize the BECKHOFF KS3444 analog input bus terminal to interface standard 0 to 20 mA signals directly from the field level to the higher-level automation controller. This four-channel module features single-ended inputs and provides a highly space-efficient design with a pluggable wiring level, enabling fast, tool-free installation and maintenance. By operating directly through the standard K-bus, the unit transmits digitized process values back to the coupler or controller with a 12-bit resolution. Integrated electrical isolation of 500 V between the K-bus and the signal channels guarantees high noise immunity and signal integrity in demanding electrical environments.

Features

Four single-ended analog inputs handling standard 0 to 20 mA current loops.
Pluggable connection level (KS-series design) allowing pre-wiring and rapid terminal replacement.
Compact 12 mm housing width to optimize control cabinet and DIN rail space.
K-bus powered with a typical current consumption of 85 mA.
Reliable performance across a broad operating temperature range of 0 to +55 degC.
Sturdy design complying with EN 60068-2-6 and EN 60068-2-27 for vibration and shock resistance.

Applications

Chemical and petrochemical processing plants.
Water and wastewater treatment facilities.
Machinery manufacturing and factory automation.
HVAC and building automation controls.

Technical Specifications

CategoryTechnical ParameterValue

Manufacturer	BECKHOFF	KS3444
Product Type	Bus Terminal (Pluggable wiring level)	4
Signal Current	0 to 20 mA	Single-ended
Internal Resistance	< 85 Ohm	12 bit
Conversion Time	approx. 2 ms	< ±0.3 % (relative to full scale value)
Surge Voltage Resistance	30 V DC	500 V (K-bus/signal voltage)
Current Consumption K-Bus	typ. 85 mA	Input: 4 x 16 bit data (4 x 8 bit control/status optional)
Housing Material	Polycarbonate	IP20 / variable
Operating Temperature	0 to +55 degC	-25 to +85 degC
Relative Humidity	95 %, non-condensing	Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Immunity/Emission	Conforms to EN 61000-6-2 / EN 61000-6-4	35 mm DIN rail (EN 60715) with lock
Connection Cross-section	Solid/Stranded: 0.08 to 1.5 mm²; Fine-wire: 0.14 to 1.5 mm²	AWG 28 to 16 (Solid/Stranded); AWG 26 to 16 (Fine-wire)
Stripping Length	9 to 10 mm	12 mm x 100 mm x 68 mm
Weight	0.055 kg	II 3 G Ex nA IIC T4 Gc

Connections and Interfaces

Connection Point	Signal Assignment
Terminal 1	Input 1 (+)
Terminal 2	Input 2 (+)
Terminal 3	Input 3 (+)
Terminal 4	Input 4 (+)
Terminal 5	Input 1 (0 V)
Terminal 6	Input 2 (0 V)
Terminal 7	Input 3 (0 V)
Terminal 8	Input 4 (0 V)

Installation Guidelines

Mount the terminal on a standard 35 mm DIN rail conforming to EN 60715. Ensure the locking mechanism is securely engaged.
To wire the pluggable KS terminal, use a flat-bladed screwdriver to actuate the integrated tension clamp mechanism.
Ensure the system power supply is deactivated before plugging or unplugging the terminal wiring block to prevent damage to the K-bus connections.
Observe regional grounding and shielding guidelines for analog signal cables to minimize electromagnetic interference.

Compliance and Certifications

CE
UL
ATEX (II 3 G Ex nA IIC T4 Gc)
DNVGL

FAQ

What is the primary difference between the Beckhoff KL3444 and the KS3444?

The KS3444 features a pluggable wiring level, allowing the terminal block connector to be detached from the main housing without disconnecting individual field wires. The KL3444 has a fixed wiring level.

Does the KS3444 require an external power supply for K-bus communication?

No, the KS3444 is powered directly via the K-bus backplane from the bus coupler or controller, drawing a typical current of 85 mA.

Is the Beckhoff KS3444 suitable for hazardous locations?

Yes, the KS3444 is ATEX certified with Ex marking II 3 G Ex nA IIC T4 Gc, making it suitable for Zone 2 hazardous areas when installed in an appropriate enclosure.

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

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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.

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

TECHNICAL SPECIFICATIONS

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