Description
Optimized for decentralized, cabinet-free industrial architectures, the Beckhoff EP2038-0001 EtherCAT Box integrates eight digital outputs capable of switching load currents of up to 2 A per channel. This robust module is engineered to control actuators such as solenoid valves, contactors, and small motors directly in high-demand field environments. By establishing point-to-point connections directly at the physical process point, it drastically reduces wiring overhead and system installation complexity.
Key Features
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High-Current Capacity: Delivers up to 2 A switching current per channel to drive demanding industrial loads.
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Individual Short-Circuit Protection: Each channel operates with dedicated protection, isolating faults to ensure maximum uptime.
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Field-Ready Construction: Rated IP65, IP66, and IP67 to withstand moisture, dust, and washdown processes without external enclosures.
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Direct EtherCAT Bus Integration: Uses dual shielded M8 screw connectors for reliable network daisy-chaining.
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Versatile Load Management: Efficiently handles resistive, inductive, and lamp loads.
Heavy Industrial Applications
- Direct control of high-current solenoid and pneumatic manifold systems.
- Distributed packaging and material handling conveyor systems.
- Automated assembly systems requiring on-machine localized I/O.
- High-vibration mobile and process machinery control.
Technical Specifications
| Parameter |
Specification Value |
| Manufacturer |
Beckhoff |
| Model Number |
EP2038-0001 |
| Protocol |
EtherCAT |
| Bus Interface |
2 x M8 socket, shielded, screw type |
| Number of Outputs |
8 |
| Output Connections |
M8 x 1, 3-pin, A-coded |
| Nominal Output Voltage |
24 V DC (-15% / +20%) |
| Max. Output Current |
2 A per channel (individually short-circuit proof), Sum max 4 A |
| Short-Circuit Current |
Typically 15 A |
| Switching Times |
Typical TON: 200 microseconds, TOFF: 200 microseconds |
| Current Consumption (US) |
120 mA from system power |
| Auxiliary Power Current (UP) |
Typically 20 mA + load |
| Power Supply Interface |
Feed: 1 x M8 male, 4-pin; Downstream: 1 x M8 female, 4-pin |
| Electrical Isolation |
500 V |
| Operating Temperature |
-25 degC to +60 degC |
| Storage Temperature |
-40 degC to +85 degC |
| Vibration/Shock Resistance |
Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity/Emission |
Conforms to EN 61000-6-2 / EN 61000-6-4 |
| Protection Rating |
IP65 / IP66 / IP67 (conforms to EN 60529) |
| Approvals |
CE, UL |
| Module Weight |
165 g |
| Shipping Weight (Calculated) |
2 kg |
Connections and Interfaces
| Connector / Pin |
Signal Assignment |
| Output M8 (3-pin, A-coded) |
Pin 1: +24 V DC Aux Output (UP) | Pin 3: GND (UP) | Pin 4: Control Output |
| Power Feed (M8 Male, 4-pin) |
Pin 1: +24 V DC Control Power (US) | Pin 2: +24 V DC Auxiliary Power (UP) | Pin 3: GND (US) | Pin 4: GND (UP) |
| Power Downstream (M8 Female, 4-pin) |
Loop-through connection to transfer US and UP power lines to subsequent modules |
Empirical Engineering Insights
Alternative Models & Compatibility
The EP2038-0001 is functionally similar to standard 8-channel output boxes, but it is specifically optimized for applications demanding higher currents (up to 2 A) than those supported by standard 0.5 A output units (e.g., EP2008-0002). If upgrading an existing design to the EP2038-0001, ensure your TwinCAT system manager physical configuration is updated with the correct ESI XML device description to map the higher current parameters correctly.
Application Pitfalls & Engineering Notes
The total sum current (∑) limit across all eight channels is capped at 4 A. Exceeding this thermal threshold will trigger protective shut-down operations. If operating inductive loads (such as solenoid valves or heavy relay coils), ensure back-EMF suppression diode systems are accounted for, as excessive flyback noise can cause logic reset states over the internal UP line.
Commissioning & Wiring Tips
Maintain physical shielding performance by using industrial-grade, shielded M8 network patch cords. Ground the shield at the primary EtherCAT coupler entry point. Always plug unused M8 sockets with standard IP67 sealing caps to prevent ingress of industrial lubricants and fluids.
Installation Guidelines
CRITICAL SAFETY WARNING
Isolate and lock out all field power supplies (both US control power and UP actuator power lines) before inserting or removing the M8 physical connectors. Hot-plugging high-current output lines may result in contact arcing, causing premature pin degradation or permanent module logic damage.
1
Mount the EP2038-0001 directly to the machine structure using M3/M4 screws through the integrated side mounting holes. Torque to the specified mechanical limits.
2
Connect the EtherCAT input/output network cables to the shielded M8 ports, securing the threaded lock collars to ensure reliable ground path connections.
3
Affix the field-side M8 3-pin actuator connections to the corresponding output channels.
4
Connect the master power feed line, verify that the LED status indicator displays steady green operational modes, and program output parameters via the TwinCAT PLC environment.