KL4012-0011 Beckhoff
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The Beckhoff KL4012-0011 is part of the KL Analog Input Modules series and features two 12-bit analog outputs with a signal current range from 0 to 21.5 mA. This module supports a 24 V DC power supply, operates on a typical K-bus current of 60 mA, and offers an output error of less than ±0.1%. It measures 12 mm wide, 100 mm high, and 68 mm deep, and mounts on a 35 mm rail with an IP20 protection rating.
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Product Description:
The KL4012-0011 is an analog signal module manufactured by Beckhoff. It delivers two current outputs that let a controller drive actuators that expect a standard 0–20 mA signal. By converting digital setpoints from the bus into proportional currents, the module adds precise analog control to distributed I/O stations and can regulate valves, positioners, or speed references in industrial automation cells. This output-based operation makes it suitable for applications that need stable analog signaling from a compact terminal module.
Its conversion accuracy begins with a 12-bit resolution, so each of the 4096 steps represents roughly 5 µA and allows fine adjustment of connected field devices. The permitted output range is 0–21.5 mA, and the small overrange margin supports fault detection in loop-powered circuits. Inside the PLC image, the channel data is mapped as a 2 × 16-bit output, which simplifies scaling because each word matches the integer size commonly used by TwinCAT. Calibration keeps linearity tight, holding the module’s deviation to <±0.1% of full scale. The electronics draw a typical 60 mA from the K-bus, which helps with terminal string power planning and overall station sizing.
The control side is supplied with 24 V DC through the power contacts and can carry field loads up to 10 A without separate feed wiring. Mechanical dimensions of 12 mm in width, 100 mm in height, and 68 mm in depth keep cabinet layouts compact, while the front edge provides screw terminals for load resistance below 500 Ω per channel. Installation is straightforward because the housing snaps onto a 35 mm mounting rail, and the assembled terminal strip achieves IP20 protection. Its slim 12 mm profile helps conserve lateral panel space and supports dense terminal arrangements in control cabinets.
