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Specification & Description
| Specification | Description |
|---|---|
| Part Number | KL3444 |
| Manufacturer | Beckhoff |
| Number of Inputs | 4 |
| Signal Voltage | 0 ... 20 mA, 4 ... 20 mA |
| Internal Resistance | < 85 Ω |
| Common-mode Voltage (U_CM) | max. 30 V |
| Resolution | 12 Bit |
| Conversion Time | approx. 2 ms |
| Measuring Error | < ±0.3% of the full scale value (at 0 °C ... +55 °C) |
| Surge Voltage Resistance | 30 VDC |
| Electrical Isolation | 500 V (K-bus/signal voltage) |
| Power Supply | via the K-bus |
| Current Consumption | typically 85 mA |
| Bit Width in Process Image | Input: 4 x 16 bit user data, 4 x 8 bit control/status (optional) |
| Weight | approx. 55 g |
| Dimensions (W x H x D) | approx. 15 mm x 100 mm x 70 mm |
| Assembly | on 35 mm mounting rail conforms to EN 60715 |
| Pluggable Wiring | for all KSxxxx terminals |
| Permissible Ambient Temperature Range (Operation) | 0 °C ... + 55 °C, -25 °C ... +60 °C (extended temperature range) |
| Permissible Ambient Temperature Range (Storage) | -25 °C ... + 85 °C, -40 °C ... + 85 °C (extended temperature range) |
| Permissible Relative Air 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 |
| Installation Position | variable |
| Approval | CE, cULus, ATEX, GL |
The Beckhoff KL3444 is a compact and versatile four-channel analog input terminal designed for seamless integration into the Beckhoff Bus Terminal system. This terminal is engineered to process signals in the range of 0 to 20 mA, making it an ideal solution for a variety of industrial control and monitoring applications.
Each channel of the KL3444 boasts an internal resistance of less than 85 Ω and can handle a common-mode voltage of up to 30 V, ensuring reliable and accurate signal acquisition. With a 12-bit resolution and a swift conversion time of approximately 2 ms, the KL3444 delivers precise data with minimal delay, enhancing the efficiency of automated processes.
The terminal's total measuring error remains below ±0.3% of the full scale value, which is a testament to its precision and reliability across the entire operating temperature range. The KL3444 is also designed with surge voltage resistance up to 30 VDC and electrical isolation of 500 V between the K-bus and signal voltage, providing an additional layer of protection for sensitive components.
Installation is straightforward, as the KL3444 is designed to mount on a standard 35 mm mounting rail in accordance with EN 60715. Its dimensions are approximately 15 mm x 100 mm x 70 mm, and it weighs around 55 g, making it a compact solution that can fit into various control cabinet configurations without taking up excessive space.
The terminal operates reliably within an ambient temperature range of 0 °C to +55 °C and can be stored in temperatures ranging from -25 °C to +85 °C. It is also designed to withstand the rigours of industrial environments, meeting the vibration and shock resistance standards set out in EN 60068-2-6/EN 60068-2-27.
For system integrators and automation professionals in the UK looking for a dependable and accurate analog input solution, the Beckhoff KL3444 represents a smart choice that combines performance, durability, and ease of use.
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Frequently Asked Questions
What type of input signals does the KL3444 accept?
The KL3444 is designed to accept 4-20 mA signal inputs, which is a common industry standard for transmitting analogue signals over long distances.
Can the KL3444 be used in environments with high levels of electrical noise?
Yes, the KL3444 has electrical isolation between the K-bus and signal voltage, which helps to protect against electrical noise and ensure reliable operation.
What is the resolution of the analogue inputs on the KL3444?
The analogue inputs on the KL3444 have a resolution of 12 bits, providing precise measurement for your control and monitoring applications.
How is the KL3444 mounted for use in an industrial setting?
The KL3444 is designed to be mounted on a standard 35 mm DIN rail, which is a common mounting practice in industrial environments for ease of installation and maintenance.
What is the power supply requirement for the KL3444 electronics?
The electronics of the KL3444 are powered via the K-bus, with a typical current consumption of 85 mA.
What is the permissible ambient temperature range for operating the KL3444?
The KL3444 can operate within an ambient temperature range of 0 °C to +55 °C, ensuring it can function effectively in a variety of industrial environments.
How does the KL3444 handle potential electrostatic discharge during installation?
The KL3444 includes specific instructions for ESD protection to prevent damage from electrostatic discharge, which involves grounding the surroundings and avoiding contact with highly insulating materials.
What type of diagnostic information does the KL3444 provide?
The KL3444 is equipped with diagnostic LEDs that provide visual feedback on the status of the inputs and the terminal's power supply, aiding in troubleshooting and maintenance.
Can the KL3444 be used in potentially explosive atmospheres?
The KL3444 has ATEX certification, which means it is suitable for use in certain potentially explosive atmospheres when installed according to ATEX guidelines.
What kind of vibration and shock resistance does the KL3444 offer?
The KL3444 conforms to EN 60068-2-6 for vibration resistance and EN 60068-2-27 for shock resistance, making it robust enough for challenging industrial applications.
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