Description
Direct field deployment of analog control signals is achieved through the Beckhoff ER4174-0002 EtherCAT Box, which provides processing of highly precise output signals without requiring an electrical cabinet. This IP67-rated module features 4 analog outputs that are individually parameterizable, allowing each channel to be configured to output either -10 to +10 V voltage signals or 0/4 to 20 mA current loops. Operating with 16-bit resolution, the device provides rapid and low-noise conversion directly at the machine, feeding actuators with clean signals over field-level M12 interfaces.
Features
-
Parameterizable Output Modes: Individual software configuration per channel for voltage (-10 V to +10 V) or current loop (0 to 20 mA, 4 to 20 mA) operation.
-
Industrial Environmental Protection: Fully encapsulated zinc die-cast housing designed for direct field mounting in IP65, IP66, and IP67 environments.
-
Ultra-Fast Conversion: Conversion times of approximately 40 microseconds ensure high compatibility with real-time motion control loop requirements.
-
Local Actuator Power: Supply voltage for the connected actuators is drawn directly from the auxiliary voltage (UP) line, simplifying cabling.
-
EtherCAT Direct Interface: Direct processing of EtherCAT protocol with direct integration via TwinCAT software.
Applications
-
Decentralized Valve and Actuator Control: Direct regulation of proportional valves, speed regulators, and variable frequency drives on machine frames.
-
Robotics and End-of-Arm Tooling: Lightweight, direct-mount analog control for tool positioning and sensory systems.
-
Heavy-Duty Washdown Zones: Automotive assembly lines, packaging plants, and material handling systems exposed to moisture and mechanical stress.
Technical Specifications
| Manufacturer |
Beckhoff Automation GmbH & Co. KG |
| Model |
ER4174-0002 |
| Protocol |
EtherCAT |
| Bus Interface |
2 x M8 socket, shielded, screw-type connection |
| Number of Channels |
4 analog outputs |
| Signal Type |
-10/0 to +10 V | 0/4 to 20 mA (parameterizable per channel) |
| Resolution |
16-bit |
| Conversion Time |
approx. 40 us |
| Measurement Error |
< 0.1% (relative to full scale value) |
| Load Impedance (Voltage) |
> 5 kOhm |
| Load Impedance (Current) |
< 500 Ohm |
| Nominal Power Supply |
24 V DC (-15% / +20%) |
| Current Consumption (from US) |
120 mA |
| Power Feed / Connection |
Feed: 1 x M8 male (4-pin); Downstream: 1 x M8 female (4-pin) |
| Electrical Isolation |
500 V |
| Protection Rating |
IP65/IP66/IP67 (conforms to EN 60529) |
| Operating Temperature |
-25 to +60 degC |
| Storage Temperature |
-40 to +85 degC |
| Country of Origin |
Germany |
| Shipping Weight (Calculated) |
0.65 kg (Net module weight: 265 g) |
| Package Dimensions (Calculated) |
180 mm x 50 mm x 45 mm |
Connections and Interfaces
| Connector / Pin |
Signal Assignment |
Function Description |
| M12 Output - Pin 1 |
+24 V DC (UP) |
Actuator power supply (auxiliary voltage) |
| M12 Output - Pin 2 |
Analog Out + |
Voltage/Current signal positive path |
| M12 Output - Pin 3 |
GND (UP) |
Ground potential for actuator supply |
| M12 Output - Pin 4 |
Analog Out - |
Voltage/Current signal reference path |
| M12 Output - Pin 5 |
Shield |
Functional earth / cable shield connection |
Empirical Engineering Insights
Alternative Models & Compatibility
The ER4174-0002 utilizes an ultra-durable zinc die-cast housing designed for high-impact physical environments. For applications with identical electrical properties but lighter weight requirements, the plastic-housed EP4174-0002 serves as a direct drop-in network alternative. Both modules feature identical EtherCAT XML device description (ESI) profiles and are fully interchangeable inside the TwinCAT system manager config without reprogramming.
Application Pitfalls & Engineering Notes
When cascading auxiliary voltage (UP) and system voltage (US) downstream to adjacent EtherCAT boxes, engineers must monitor total cumulative current. The M8 power connectors are strictly limited to a maximum continuous current of 4 A. Exceeding this limit will cause internal thermal stress and contact oxidation. If high-draw actuators (such as proportional solenoid valves) are connected, auxiliary power (UP) should be externalized or isolated using specialized power feed modules.
Commissioning & Wiring Tips
To guarantee the high precision offered by the 16-bit DAC, users must use fully shielded, twisted-pair cabling for the M12 analog connections. Grounding the zinc die-cast housing via the integrated mounting tabs directly to a low-impedance machine frame is critical for draining high-frequency industrial noise. If high common-mode voltage is expected between field actuators and the controller, the 500 V electrical isolation boundary provides safety, but shielding is required to suppress analog signal ripple.
Installation Guidelines
CRITICAL WARNING:
De-energize all system power (US and UP) before physical installation, mounting, or cable connection. Connecting hot-swappable cables to ungrounded field boxes can cause permanent damage to sensitive internal digital-to-analog converter chips.
1
Mount the box physically using two M3 screws through the integrated housing holes. Ground the chassis directly to a clean metal plate.
2
Connect the EtherCAT interface lines using shielded M8 screw-type cabling to "EtherCAT IN" and downstream to "EtherCAT OUT".
3
Interface the actuators to the M12 output connectors using high-quality shielded cabling to prevent EMF interference.
4
Apply the 24 V DC supply voltage to the M8 power feed connector. Verify correct led status indicators before startup.