EL4028 | Beckhoff EtherCAT Terminal 8-Channel Analog Output 4–20 mA 12 Bit
Beckhoff · Cables & Connectivity
Description The Beckhoff EL4028 is an 8-channel EtherCAT analog output terminal designed for current signal generation in the 4…20 mA range. With 12-bit resolution, electrical isolation, and distributed clock synchronization, it provides precise and reliable current control in automation systems. Technical Specifications Condition New/Never Used Surplus Brand Beckhoff Category I/O Terminals Part Number EL4028 Subcategory Analog Output Terminals Number of Outputs 8 Signal Current 4…20 mA Power Supply 24 V DC via power contacts Load Resistance < 150 Ω Resolution 12 bit Conversion Time ~400 µs Output Error < 0.1% (relative to end value) Electrical Isolation 500 V (E-bus/signal voltage) Distributed Clocks Yes Distributed Clock Precision < 1 µs Special Features Watchdog with user-specific output ramp; user synchronization available Current Consumption (Power) Typ. 50 mA Current Consumption (E-bus) Typ. 100 mA Bit Width in Process Image 8 × 16-bit AO outputs Operating Temperature -25…+60 °C Storage Temperature -40…+85 °C Relative Humidity 95%, no condensation EMC Compliance EN 61000-6-2 / EN 61000-6-4 Housing Material Polycarbonate Installation DIN rail 35 mm, EN 60715 with lock Dimensions (W × H × D) 12 mm × 100 mm × 68 mm Protection Rating IP20 Weight Approx. 60 g Information About EL4028 The EL4028 is part of Beckhoff’s EL series EtherCAT terminals, providing eight analog output channels for generating current signals in the 4…20 mA range. It integrates 12-bit resolution and fast 400 µs conversion times, ensuring accurate control for analog actuators and process devices. The terminal features electrical isolation, distributed clocks with sub-microsecond precision, and an optional watchdog function that allows user-defined safe output states. Compact in size and designed for DIN rail installation, the EL4028 is optimized for reliable and scalable analog signal generation in distributed automation systems. Key Features: Eight Analog Output Channels: Provides 8 independent current outputs for precise control of actuators and process signals. Current Range 4…20 mA: Standard industrial signal range supports wide compatibility with automation equipment. High Accuracy and Resolution: 12-bit resolution with < 0.1% output error ensures reliable analog performance. Fast Response Time: Offers conversion times of ~400 µs for responsive signal updates in real-time applications. Distributed Clock Synchronization: Supports EtherCAT distributed clocks with < 1 µs precision for time-critical systems. Robust Electrical Isolation: 500 V isolation between the E-bus and signal voltage enhances system safety. Optional Watchdog Function: Provides user-specific ramped output values and safe-state behavior on communication loss. Compact DIN Rail Mounting: Slim 12 mm housing allows high-density installation in modular control setups. The EL4028 delivers the reliability and precision required for accurate analog signal generation in EtherCAT-based automation systems.
Brand: Beckhoff · Category: Cables & Connectivity
Key features
- Eight Analog Output Channels: Provides 8 independent current outputs for precise control of actuators and process signals.
- Current Range 4…20 mA: Standard industrial signal range supports wide compatibility with automation equipment.
- High Accuracy and Resolution: 12-bit resolution with < 0.1% output error ensures reliable analog performance.
- Fast Response Time: Offers conversion times of ~400 µs for responsive signal updates in real-time applications.
- Distributed Clock Synchronization: Supports EtherCAT distributed clocks with < 1 µs precision for time-critical systems.
- Robust Electrical Isolation: 500 V isolation between the E-bus and signal voltage enhances system safety.
- Optional Watchdog Function: Provides user-specific ramped output values and safe-state behavior on communication loss.
- Compact DIN Rail Mounting: Slim 12 mm housing allows high-density installation in modular control setups.
Specifications
| Manufacturer part number | EL4028 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Beckhoff |
| Category | I/O Terminals |
| Part Number | EL4028 |
| Subcategory | Analog Output Terminals |
| Number of Outputs | 8 |
| Signal Current | 4…20 mA |
| Power Supply | 24 V DC via power contacts |
| Load Resistance | < 150 Ω |
| Resolution | 12 bit |
| Conversion Time | ~400 µs |
| Output Error | < 0.1% (relative to end value) |
| Electrical Isolation | 500 V (E-bus/signal voltage) |
| Distributed Clocks | Yes |
| Distributed Clock Precision | < 1 µs |
| Special Features | Watchdog with user-specific output ramp; user synchronization available |
| Current Consumption (Power) | Typ. 50 mA |
| Current Consumption (E-bus) | Typ. 100 mA |
| Bit Width in Process Image | 8 × 16-bit AO outputs |
| Operating Temperature | -25…+60 °C |
| Storage Temperature | -40…+85 °C |
| Relative Humidity | 95%, no condensation |
| EMC Compliance | EN 61000-6-2 / EN 61000-6-4 |
| Housing Material | Polycarbonate |
| Installation | DIN rail 35 mm, EN 60715 with lock |
| Dimensions (W × H × D) | 12 mm × 100 mm × 68 mm |
| Protection Rating | IP20 |
| Weight | Approx. 60 g |
| Product type | Analog Output Terminals |
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