Description
The Beckhoff EL2535 is a 2-channel PWM EtherCAT Terminal that provides precise current-controlled outputs for driving inductive loads. Operating at 24–48 V DC with ±1 A per channel, it delivers high-speed pulse-width modulation up to 30 kHz for accurate control of valves, coils, and other actuators in automation systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Beckhoff |
| Category |
Industrial Automation |
| Part Number |
EL2535 |
| Subcategory |
EtherCAT Terminal |
| Function |
2-channel PWM output terminal, current-controlled |
| Connection Technology |
PWM output, push-pull outputs |
| Number of Outputs |
2 |
| Nominal Voltage |
24 V DC (-15%/+20%) |
| Operating Voltage Range |
24…48 V DC |
| Load Type |
Inductive > 1 mH |
| Max. Output Current |
±1 A per channel |
| Short-Circuit Current |
Typ. < 2 A |
| PWM Clock Frequency |
30 kHz |
| Duty Factor |
0–100% (current-controlled) |
| Resolution |
10 bit |
| Reverse Voltage Protection |
Yes |
| Distributed Clocks |
Not supported |
| Digital Inputs |
2 × 24 V integrated digital inputs |
| Electrical Isolation |
500 V (E-bus/field potential) |
| Current Consumption (E-bus) |
Typ. 110 mA |
| Current Consumption (Power Contacts) |
Typ. 30 mA + load |
| Bit Width in Process Image |
48 inputs/outputs: 2 × 16-bit data, 2 × 8-bit control/status |
| Operating Temperature |
0°C to +55°C |
| Storage Temperature |
-25°C to +85°C |
| Relative Humidity |
95%, non-condensing |
| Protection Class |
IP20 |
| Weight |
Approx. 50 g |
Information About EL2535
The EL2535 EtherCAT Terminal is part of Beckhoff’s advanced I/O system, providing two current-controlled PWM output channels for precise actuator control in distributed automation environments. Designed to operate within the 24–48 V DC range, the EL2535 supports inductive loads such as valves, solenoids, and coils with high precision and reliability. Each channel delivers a ±1 A output, controlled by a 10-bit resolution PWM signal with a switching frequency of up to 30 kHz. The terminal’s push-pull output design supports bidirectional current flow and offers inherent protection features, including short-circuit and reverse polarity protection. Integrated digital inputs allow for direct feedback or control signals without requiring additional terminals. With electrical isolation between the field and EtherCAT levels and a compact IP20 housing, the EL2535 ensures safe, stable, and efficient operation in industrial control systems.
Key Features:
- Dual PWM Channels: Two independently controlled PWM outputs for current-driven applications such as solenoid and valve actuation.
- Current-Controlled Operation: Maintains precise current regulation (±1 A per channel) for consistent actuator performance.
- High-Speed Modulation: 30 kHz PWM clock frequency provides smooth and rapid signal control suitable for dynamic processes.
- Wide Voltage Range: Operates within 24–48 V DC, ensuring compatibility with diverse power supply configurations.
- Integrated Digital Inputs: Includes two 24 V inputs for additional control or monitoring functionality within the same module.
- High Resolution and Accuracy: 10-bit resolution guarantees fine-grained modulation for precise output control.
- Electrical Isolation: 500 V isolation between the E-bus and field potential enhances operational safety and signal integrity.
- Short-Circuit and Reverse Protection: Built-in circuitry safeguards the terminal and connected devices from electrical faults.
- Compact Modular Design: Space-saving EtherCAT form factor allows seamless integration with other Beckhoff I/O terminals.
- Stable Industrial Performance: Robust construction and reliable power handling ensure dependable operation across 0–55°C environments.
The EL2535 delivers the reliability and precision required for high-speed current-controlled PWM applications in modern EtherCAT-based automation systems.
