Description
The Beckhoff KL2535 is a 2-channel PWM output bus terminal that controls an output current through pulse width modulation of a 24 V DC supply. It provides precise current control for inductive loads such as valves and coils, featuring overload and short-circuit protection for reliable industrial operation.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Beckhoff |
| Category |
Industrial Automation |
| Part Number |
KL2535 |
| Subcategory |
Bus Terminal |
| Number of Outputs |
2 |
| Nominal Voltage |
24 V DC (-15% / +20%) |
| Max. Output Current |
2 × ±1 A (short-circuit and thermal-overload proof) |
| Load Type |
Inductive > 1 mH (valves, coils) |
| PWM Clock Frequency |
36 kHz |
| Duty Factor |
0–100% (current-controlled) |
| Resolution |
Up to 12-bit |
| Electrical Isolation |
500 V (K-bus/field potential) |
| Current Consumption (K-bus) |
Typ. 60 mA |
| Bit Width in Process Image |
48 bits (2 × 16-bit data, 2 × 8-bit control/status) |
| Configuration |
Via Bus Coupler or controller (no address setting) |
| Indication |
LED indicators for each channel |
| Operating Temperature |
0°C to +55°C |
| Storage Temperature |
-25°C to +85°C |
| Relative Humidity |
95%, non-condensing |
| Protection Class |
IP20 |
| Weight |
Approx. 55 g |
Information About KL2535
The KL2535 is part of Beckhoff’s modular Bus Terminal I/O system, designed to deliver flexible and precise control of analog and digital signals in distributed automation architectures. It features two independent, current-controlled PWM output channels for direct connection to inductive loads such as proportional valves or electromagnetic actuators. Each output channel is protected against overloads and short-circuits, ensuring reliable field operation. The terminal is galvanically isolated from the K-bus, offering enhanced system protection, and its LED indicators simplify fault diagnosis during operation or maintenance.
Key Features:
- Dual PWM Channels: Provides two independently controlled PWM outputs for flexible load management.
- Precise Current Regulation: Maintains accurate current control from 0 to ±1 A through 16-bit signal input.
- High-Frequency Operation: Operates at a 36 kHz PWM clock frequency for smooth and efficient current modulation.
- Galvanic Isolation: Electrically isolated 500 V between K-bus and field potential enhances operational safety.
- Integrated Protection: Output stage is safeguarded against overloads and short-circuits for dependable use.
- Status Indication: Built-in LEDs display load and wiring states for quick local diagnostics.
- Flexible Configuration: Supports configuration via Bus Coupler or controller without manual address setting.
- Industrial Durability: Designed for long-term stability in environments with temperatures from -25°C to +85°C.
The KL2535 delivers the reliability and precision required for industrial control systems involving proportional loads, coils, and other current-driven devices.
