KL5111-0011 Beckhoff
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The Beckhoff KL5111-0011 is a 16-bit binary counter input module from the KL Analog Input Modules series. It features a single channel for HTL encoder signal types with a maximum input frequency of 250 kHz and operates with a 24 V DC encoder connection. The module has IP20 protection class and measures 12 x 100 x 68 mm.
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Product Description:
The KL5111-0011 is an incremental encoder interface produced by Beckhoff within the KL Analog Input Modules series. The module mounts on the K-bus rail to acquire position and speed data from HTL encoders and deliver it to a PLC in real time. By translating differential edge information into binary counts, the unit allows motion controllers to synchronize axes, measure lengths, or monitor conveyor speeds in compact machine assemblies.
The housing measures 12 x 100 x 68 mm, permitting dense I/O packing inside control cabinets. Internally, a quadrature decoder with 4-fold evaluation accepts A, B, and C tracks, letting each cycle contribute four counts to the 16-bit binary counter so that 65,536 discrete positions can be distinguished. The front-end comparator tolerates up to 15 V as a defined high and recognizes a low below 5 V. With a maximum input rate of 250 kHz, fast servo feedback signals are captured without aliasing, and the period-measurement block resolves each pulse to 200 ns for speed calculation. The front terminals accept the HTL signal level, matching most 24-volt incremental encoders, while one channel is provided to simplify addressing in the PLC.
The supply for the encoder is routed through the terminal and stabilized at 24 V DC, eliminating separate power distribution wiring. Electrical characteristics follow EN 61131-2 Type 1, ensuring predictable input current and switching thresholds across temperature. Environmental ingress is limited to IP20, which is adequate for installation within an enclosed panel. During every bus cycle the terminal contributes 6 bytes in / 6 bytes out to the process image, carrying the present count, latched zero pulse, and status bits while receiving reset and latch commands. Additional features include a latch reset function, a 16-bit zero-pulse latch for homing routines, and a dedicated latch line that records position on external events.
Frequently Asked Questions about KL5111-0011:
Q: What is the maximum input frequency supported by the KL5111-0011 module?
A: The KL5111-0011 module supports a maximum input frequency of 250 kHz for high-speed counting applications.
Q: How many channels are available on the KL5111-0011 module?
A: The Beckhoff KL5111-0011 accepts a single channel for encoder input.
Q: What operating voltage is required for encoder connection on the KL5111-0011?
A: This module operates with 24 V DC for encoder supply and connection signals.
Q: What is the period resolution of the KL5111-0011 input module?
A: The KL5111-0011 provides a period resolution of 200 nanoseconds for precise timing.
Q: What type of counter is integrated in the KL5111-0011 module?
A: This module uses a 16-bit binary counter for input pulse evaluation.
