KL2521

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The Beckhoff KL2521, part of the KL Analog Input Modules Series, features a 24 V DC nominal voltage with short-circuit and overload detection diagnostics. It supports two channels with an output current of 0.5 A per channel. The module offers 500 V isolation and caters to ohmic and inductive load types.

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Product Description:

The KL2521 Analog Input Module is a compact automation terminal. It is developed for precise analog signal acquisition. The unit is suitable for use in distributed control and challenging industrial automation systems. The product is engineered by Beckhoff, a reputable organization producing high-quality industrial equipment.

The KL2521 analog input module supports two analog inputs labeled as +T and +Z. It features PWM clock frequencies between 1 kHz and 500 kHz. The default frequency is configured at 50 kHz. It supports a duty factor of 50 percent. It allows a tolerance range of plus or minus 20 percent. The module provides a maximum resolution of 15 bits. The Beckhoff KL input module ensures 500 V electrical isolation. The isolation separates the K-bus from the field potential. The total bit width in the process image is 24 I/Os. It includes a 16-bit data channel and an 8-bit status/control channel. The module has a configuration done via Bus Coupler. It can also be configured directly through a controller. The current consumption on the K-bus is rated at 50 mA. It can reach a maximum of 120 mA under peak usage. The protection class is IP20 for use in enclosed cabinets. The product has a standard installation orientation. It is not designed for outdoor or exposed environments. The form factor supports space-saving DIN rail mounting. It is intended for integration into modular control architectures. The product meets industrial control system standards.

The KL2521 analog input module is a field-ready terminal for input capture. It is identified for accurate analog measurements under controlled PWM settings. Its industrial performance is backed by reliable electrical isolation. The module fits seamlessly into automation infrastructure.

Approvals
CE, UL, ATEX
Bit Width (Process Image)
24 I/Os: 1 x 16-bit data, 1 x 8-bit control/status
Configuration
Via Bus Coupler or controller
Current Consumption
approx. 20 mA (from K-bus)
Current Consumption (K-bus)
50 mA, Max 120 mA
Duty Factor
50% (±20%)
Electrical Isolation
500 V (K-bus/field potential)
Isolation
500 V (K-bus/field voltage)
Number of Inputs
2 (+T, +Z)
Protection/Install Position
IP20
PWM Clock Frequency
1…500 kHz, 50 kHz default
Resolution
Max. 15 bit
Weight
Approx. 50 g

Frequently Asked Questions about KL2521:

Q: How many output channels does the KL2521 module include?

A: The KL2521 module includes two output channels. Each channel can deliver up to 0.5 A at 24 V DC.

Q: What type of load is supported by the KL2521 terminal?

A: The KL2521 supports ohmic, inductive, and lamp loads. This allows wide applicability across various industrial devices.

Q: Does the KL2521 module offer protection features?

A: Yes, the KL2521 features short-circuit and overload detection. It protects connected equipment from electrical faults.

Q: What isolation rating does the KL2521 module provide?

A: The KL2521 delivers 500 V electrical isolation. It separates K-bus from the field side to avoid interference.

Q: What PWM frequency settings are available on KL2521?

A: The KL2521 supports PWM frequencies from 1 kHz to 500 kHz. The default clock setting is 50 kHz.


Internal Product Review

  • ‘‘The KL2521 module supports dual-channel analog output for high-precision tasks. It integrates short-circuit and overload diagnostics for added safety. With 500 V isolation, it ensures reliable signal protection in distributed systems. Its compact design is ideal for DIN rail industrial installations.’’

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