BECKHOFF

Beckhoff ER2338-0001 EtherCAT Box Digital I/O Module

SKU ER2338-0001

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: BECKHOFF
  • Product No.: ER2338-0001
  • Origin Germany
  • Product Type: EtherCAT I/O Modules
  • Payment: T/T, Western Union
  • Weight: 0.5 kg
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Description

Description

Designed to operate directly in harsh industrial environments without a control cabinet, the Beckhoff ER2338-0001 enables decentralized routing of bidirectional digital control signals. This EtherCAT Box module features 8 digital channels that are individually and freely configurable as either inputs or outputs. By supporting dynamic configuration, this module simplifies field I/O layout adjustments and reduces the overall hardware footprint in complex processing lines. Each channel is processed with high temporal precision, offering integrated input filtering and short-circuit protection for connected sensors.

Key Features

  • Flexible I/O Configuration: 8 digital channels that can be configured independently as inputs or outputs.
  • Robust Industrial Housing: Fully cast zinc die-cast construction with IP65, IP66, and IP67 ingress ratings.
  • High-Speed Communication: Dual M8 shielded, screw-type EtherCAT interfaces for direct line topology.
  • Sensor and Load Protection: Short-circuit-proof sensor supply up to 0.5 A total and thermal overload output protection.
  • Standard M8 Connections: A-coded 3-pin M8 sockets provide standard industrial physical interfaces.

Industrial Applications

  • Automotive Assembly Lines: Decentralized sensor and actuator routing on robotic arms and welding cells.
  • Food and Beverage Processing: Washdown zones requiring robust environmental protection without enclosure housing.
  • Conveyor and Material Handling: Localized distribution of photoelectric sensors, solenoid valves, and pneumatic switches.

Technical Specifications

Technical Parameter Specification Value
Manufacturer Beckhoff
Model Number ER2338-0001
Protocol EtherCAT
Bus Interface 2 x M8 socket, shielded, screw type
Number of Channels 8 digital inputs or outputs, freely configurable
I/O Connections M8 x 1, 3-pin, A-coded
Input Filter Time 10 microseconds
"0" Signal Voltage Range -3 to +5 V
"1" Signal Voltage Range 11 to 30 V, 6 mA input current (EN 61131-2, type 3)
Sensor Supply From load supply voltage, max. 0.5 A total, short-circuit proof
Supported Load Types Ohmic, inductive, lamp load
Rated Load Voltage 24 V DC (-15% / +20%)
Max. Output Current 0.5 A per channel
Switching Times typ. TON: 50 microseconds, typ. TOFF: 100 microseconds
Current Consumption (US) 120 mA
Auxiliary Power Current typ. 20 mA + load
Power Supply Interface 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
Physical Module Weight approx. 265 g
Shipping Weight (Calculated) 2.0 kg

Port and Wiring Configurations

Interface Type Connector Form Factor Assignment & Purpose
EtherCAT Bus Input/Output 2 x M8 socket, shielded, screw-type EtherCAT communication downstream/upstream linking.
Digital I/O Channels (0-7) 8 x M8 female socket, 3-pin, A-coded Configurable digital signal and sensor supply. Pin 1: +24 V DC sensor supply, Pin 3: GND, Pin 4: Input/Output signal.
Power Supply Feed 1 x M8 male socket, 4-pin System/sensor voltage (Us) and peripheral load voltage (Up).
Power Supply Downstream 1 x M8 female socket, 4-pin Feed-through power to adjacent EtherCAT Box modules.

Empirical Engineering Insights

Alternative Models & Compatibility

The ER2338-0001 features fully configurable channels, which makes it an ideal, high-efficiency spare part replacing either pure digital input (ER1008) or pure digital output (ER2008) units in machine modifications. Note that TwinCAT ESI (EtherCAT Slave Information) configurations must specifically define the operational profile (Input vs. Output mode) for each channel to match the physical wiring.

Application Pitfalls & Engineering Notes

Thermal management inside completely enclosed, non-ventilated routing channels must be monitored closely. Although rated up to +60 degC ambient, driving all 8 outputs at their maximum 0.5 A inductive rating simultaneously causes significant localized heating within the cast housing. Ensure proper spacing or metallic surface heat sinking is utilized if cumulative output current exceeds 3.0 A.

Commissioning & Wiring Tips

During commissioning, verify that the Us (system power) and Up (load power) loops are isolated appropriately if safety relays are installed. A common fault is tying Us and Up to the same field supply line, which overrides safety-related external output de-energization loops. Always torque all M8 connectors to exactly 0.4 Nm to preserve environmental sealing.

Installation Guidelines

CRITICAL WARNING: Prior to wiring, mounting, or performing maintenance on the module, ensure all 24 V DC control power (Us) and peripheral load power (Up) sources are completely de-energized. Verify the absence of voltage using a calibrated test instrument. Failure to isolate power lines can result in hardware damage or unexpected device actuation, leading to equipment damage or personal injury.
1
Mechanical Mounting: Secure the physical chassis directly to the machine frame or mounting profile using two M3 screws. Ensure the mounting surface is clean to optimize thermal conduction.
2
EtherCAT and Power Cabling: Connect the shielded M8 EtherCAT cabling to the IN and OUT ports. Connect the 4-pin M8 power cable supplying 24 V DC to the input feed port. Secure unused ports with IP67 protective caps to prevent ingress of moisture or particulates.
3
Software Configuration: Power up the system, scan the EtherCAT network in TwinCAT, and import the relevant XML (ESI) file. Map the individual channels as inputs or outputs within your PLC project prior to system logic execution.
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
Can every channel on this module be configured as either an input or an output simultaneously?
Yes. Each of the 8 channels on this module is freely configurable. You can define any mix of inputs and outputs through the TwinCAT configuration software to match your field wiring needs.
What is the maximum current capacity for the sensor power supply?
The sensor supply provides a maximum total current of 0.5 A across all channels. It is fully protected against short-circuits. If individual sensor consumption is high, verify the total draw stays below this 0.5 A threshold.
How does the module signal a short circuit on an output channel?
Outputs are short-circuit protected. In the event of an overload, the module shuts down the output and communicates the fault status back to the controller via the cyclical EtherCAT process data.
Do I need special tools to maintain the IP67 sealing during installation?
Yes, we highly recommend utilizing a calibrated torque wrench for M8 connectors, tightening to exactly 0.4 Nm. Under-tightening allows moisture ingress, while over-tightening can crack the inner connector threads.
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ER2338-0001

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Beckhoff ER2338-0001 EtherCAT Box Digital I/O Module

Only 10 item(s) left in stock
  • Manufacturer: BECKHOFF

  • Product No.: ER2338-0001

  • Country of origin:Germany

  • Product Type: EtherCAT I/O Modules

  • Payment: T/T, Western Union

  • Weight: 500g

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantity
View full details

Description

Designed to operate directly in harsh industrial environments without a control cabinet, the Beckhoff ER2338-0001 enables decentralized routing of bidirectional digital control signals. This EtherCAT Box module features 8 digital channels that are individually and freely configurable as either inputs or outputs. By supporting dynamic configuration, this module simplifies field I/O layout adjustments and reduces the overall hardware footprint in complex processing lines. Each channel is processed with high temporal precision, offering integrated input filtering and short-circuit protection for connected sensors.

Key Features

  • Flexible I/O Configuration: 8 digital channels that can be configured independently as inputs or outputs.
  • Robust Industrial Housing: Fully cast zinc die-cast construction with IP65, IP66, and IP67 ingress ratings.
  • High-Speed Communication: Dual M8 shielded, screw-type EtherCAT interfaces for direct line topology.
  • Sensor and Load Protection: Short-circuit-proof sensor supply up to 0.5 A total and thermal overload output protection.
  • Standard M8 Connections: A-coded 3-pin M8 sockets provide standard industrial physical interfaces.

Industrial Applications

  • Automotive Assembly Lines: Decentralized sensor and actuator routing on robotic arms and welding cells.
  • Food and Beverage Processing: Washdown zones requiring robust environmental protection without enclosure housing.
  • Conveyor and Material Handling: Localized distribution of photoelectric sensors, solenoid valves, and pneumatic switches.

Technical Specifications

Technical Parameter Specification Value
Manufacturer Beckhoff
Model Number ER2338-0001
Protocol EtherCAT
Bus Interface 2 x M8 socket, shielded, screw type
Number of Channels 8 digital inputs or outputs, freely configurable
I/O Connections M8 x 1, 3-pin, A-coded
Input Filter Time 10 microseconds
"0" Signal Voltage Range -3 to +5 V
"1" Signal Voltage Range 11 to 30 V, 6 mA input current (EN 61131-2, type 3)
Sensor Supply From load supply voltage, max. 0.5 A total, short-circuit proof
Supported Load Types Ohmic, inductive, lamp load
Rated Load Voltage 24 V DC (-15% / +20%)
Max. Output Current 0.5 A per channel
Switching Times typ. TON: 50 microseconds, typ. TOFF: 100 microseconds
Current Consumption (US) 120 mA
Auxiliary Power Current typ. 20 mA + load
Power Supply Interface 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
Physical Module Weight approx. 265 g
Shipping Weight (Calculated) 2.0 kg

Port and Wiring Configurations

Interface Type Connector Form Factor Assignment & Purpose
EtherCAT Bus Input/Output 2 x M8 socket, shielded, screw-type EtherCAT communication downstream/upstream linking.
Digital I/O Channels (0-7) 8 x M8 female socket, 3-pin, A-coded Configurable digital signal and sensor supply. Pin 1: +24 V DC sensor supply, Pin 3: GND, Pin 4: Input/Output signal.
Power Supply Feed 1 x M8 male socket, 4-pin System/sensor voltage (Us) and peripheral load voltage (Up).
Power Supply Downstream 1 x M8 female socket, 4-pin Feed-through power to adjacent EtherCAT Box modules.

Empirical Engineering Insights

Alternative Models & Compatibility

The ER2338-0001 features fully configurable channels, which makes it an ideal, high-efficiency spare part replacing either pure digital input (ER1008) or pure digital output (ER2008) units in machine modifications. Note that TwinCAT ESI (EtherCAT Slave Information) configurations must specifically define the operational profile (Input vs. Output mode) for each channel to match the physical wiring.

Application Pitfalls & Engineering Notes

Thermal management inside completely enclosed, non-ventilated routing channels must be monitored closely. Although rated up to +60 degC ambient, driving all 8 outputs at their maximum 0.5 A inductive rating simultaneously causes significant localized heating within the cast housing. Ensure proper spacing or metallic surface heat sinking is utilized if cumulative output current exceeds 3.0 A.

Commissioning & Wiring Tips

During commissioning, verify that the Us (system power) and Up (load power) loops are isolated appropriately if safety relays are installed. A common fault is tying Us and Up to the same field supply line, which overrides safety-related external output de-energization loops. Always torque all M8 connectors to exactly 0.4 Nm to preserve environmental sealing.

Installation Guidelines

CRITICAL WARNING: Prior to wiring, mounting, or performing maintenance on the module, ensure all 24 V DC control power (Us) and peripheral load power (Up) sources are completely de-energized. Verify the absence of voltage using a calibrated test instrument. Failure to isolate power lines can result in hardware damage or unexpected device actuation, leading to equipment damage or personal injury.
1
Mechanical Mounting: Secure the physical chassis directly to the machine frame or mounting profile using two M3 screws. Ensure the mounting surface is clean to optimize thermal conduction.
2
EtherCAT and Power Cabling: Connect the shielded M8 EtherCAT cabling to the IN and OUT ports. Connect the 4-pin M8 power cable supplying 24 V DC to the input feed port. Secure unused ports with IP67 protective caps to prevent ingress of moisture or particulates.
3
Software Configuration: Power up the system, scan the EtherCAT network in TwinCAT, and import the relevant XML (ESI) file. Map the individual channels as inputs or outputs within your PLC project prior to system logic execution.

Can every channel on this module be configured as either an input or an output simultaneously?

Yes. Each of the 8 channels on this module is freely configurable. You can define any mix of inputs and outputs through the TwinCAT configuration software to match your field wiring needs.

What is the maximum current capacity for the sensor power supply?

The sensor supply provides a maximum total current of 0.5 A across all channels. It is fully protected against short-circuits. If individual sensor consumption is high, verify the total draw stays below this 0.5 A threshold.

How does the module signal a short circuit on an output channel?

Outputs are short-circuit protected. In the event of an overload, the module shuts down the output and communicates the fault status back to the controller via the cyclical EtherCAT process data.

Do I need special tools to maintain the IP67 sealing during installation?

Yes, we highly recommend utilizing a calibrated torque wrench for M8 connectors, tightening to exactly 0.4 Nm. Under-tightening allows moisture ingress, while over-tightening can crack the inner connector threads.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Germany

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