

EL4028 | Beckhoff EtherCAT Terminal 8-Channel Analog Output 4–20 mA 12 Bit
- Regular price
- $563.00
- Sale price
- $563.00
- Regular price
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Product Description P/N: EL4028
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.
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.
