Many procurement teams check EP2339-0021 against Beckhoff Ep9128 0021, Beckhoff Ep1111 0000 and Beckhoff Ep2339 0003 before signing purchase orders, verifying quality, compliance, and after-sales support availability.
EP2339-0021 - Beckhoff EtherCAT Box Digital Input
Beckhoff EP2339-0021 EtherCAT Box, Industrial housing is a rugged digital input/output module that ensures reliable field-level connectivity for demanding automation tasks.

| Brand | Beckhoff |
| Product Type | EtherCAT Box Digital Input |
| Product | EP2339-0021 |
EP2339-0021 Beckhoff EtherCAT Box Digital Input Technical Specifications
| Specification | Value |
|---|---|
| Protocol | EtherCAT |
| Bus interface | 2 x M8 socket, 4-pin, a-coded, shielded |
| Specification | EN 61131-2, type 1/3 |
| Input filter | 3.0 ms |
| "0" signal voltage | -3Γ’ΒΒ¦+5 V |
| "1" signal voltage | 11Γ’ΒΒ¦30 V, 6 mA input current (EN 61131-2, type 3) |
| Power supply connection | feed: 1 x M8 male socket, 4-pin, a-coded; downstream connection: 1 x M8 female socket, 4-pin, a-coded |
| Sensor supply | from load supply voltage, max. 0.5 A, short-circuit proof in total |
| Current consumption from US | 120 mA |
| Electrical isolation | 500 V |
| Weight | approx. 250 g |
| Operating temperature | -25...+60Β°C |
| Storage temperature | -40...+85Β°C |
| 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 |
| Protect. rating/installation pos. | IP65/66/67 (conforms to EN 60529)/variable |
| Approvals/markings | CE, UL |
| Housing - Dimensions (W x H x D) | 60 mm x 126 mm x 26.5 mm |
| Housing - Material | PA6 (polyamide) |
| Housing - Installation | 2 fixing holes 3.5 mm diameter for M3; 2 fixing holes 4.5 mm diameter for M4 |
| Number of channels | 16 digital inputs or outputs |
| Input/output connections | M8 x 1, 3-pin, a-coded |
| Load type | ohmic, inductive, lamp load |
| Rated load voltage | 24 V DC (-15%/+20%) |
| Max. output current | 0.5 A per channel, individually short-circuit proof, Γ’ΒΒ 4 A |
| Switching times | typ. TON: 60 ΓΒ΅s, typ. TOFF: 300 ΓΒ΅s |
| Short-circuit current | typ. 1.5 A |
| Auxiliary power current | typ. 20 mA + load |
The Beckhoff EP2339-0021 EtherCAT Box, Industrial housing is designed as a versatile digital input/output terminal supporting up to 16 configurable channels. Operating at a rated load voltage of 24 V DC (-15%/+20%), it can handle 0.5 A per channel with a total of 4 A, making it suitable for a wide range of loads including ohmic, inductive, and lamp types. Its compact PA6 polyamide housing (60 mm x 126 mm x 26.5 mm) and weight of approx. 250 g ensure a lightweight yet durable solution for decentralized field installations. Built-in 500 V electrical isolation provides robust separation between system and field, while fast switching times (typ. TON: 60 Β΅s, TOFF: 300 Β΅s) guarantee precise response in real-time control.
The EP2339-0021 is engineered for reliability in harsh industrial environments, with IP65/66/67 protection against dust and water, ensuring secure operation in outdoor and wet conditions. It conforms to international EMC and vibration resistance standards and carries global certifications such as CE and UL. Its design includes M8 connectors for simple sensor/actuator wiring, short-circuit protection on all outputs, and status LEDs for clear diagnostics. With an operating temperature range of -25Β°C to +60Β°C, it remains dependable even in challenging climates. These features reinforce Beckhoffβs commitment to delivering industrial-grade automation components that engineers can trust for long-term use.
In real-world applications, the EP2339-0021 EtherCAT Box is widely used in factory automation, packaging machines, conveyor systems, and robotics. Its decentralized design reduces cabling complexity and allows quick system scaling, while compatibility with TwinCAT streamlines integration with PLC control. Maintenance teams benefit from easy fault diagnostics, and system designers appreciate its flexibility for mixed digital I/O configurations. Overall, the Beckhoff EP2339-0021 provides a cost-effective, rugged, and reliable solution for distributed automation where efficiency and durability are paramount.







