EL2872 Beckhoff 16-Channel Digital Output | EtherCAT Terminal 24V 0.5A

EL2872 – EtherCAT Digital Output Terminal (16-Channel, 24 V DC, 0.5 A)

Brand: Beckhoff | Model: EL2872 | Series: EtherCAT Terminal | Type: Digital Output

Status: Regular delivery. The EL2872 offers 16 channels in a compact 12 mm housing. It uses a 20‑pin flat‑ribbon connector (IDC) for fast, secure wiring. LEDs show each channel’s state. Ideal for valve terminals and multi‑pin applications.

Key Highlights

• 16 digital outputs – 24 V DC, 0.5 A per channel (short‑circuit proof)
• Flat‑ribbon connection – AWG 28, 1.27 mm pitch, insulation displacement
• Fast switching – TON 60 µs / TOFF 300 µs (typical)
• Load flexibility – ohmic, inductive, and lamp loads
• Protection – reverse polarity, short‑circuit, overcurrent
• Diagnostics – per‑channel LED indicators

Technical Specifications – Tree View

• General
  • Outputs: 16 (digital)
  • Nominal voltage: 24 V DC (-15 % / +20 %)
  • Rated current per pin: max. 1 A
  • Max. output current per channel: 0.5 A (short‑circuit proof)
  • Short‑circuit current: typ. < 2 A
  • Reverse voltage protection: yes
  • Breaking energy: < 150 mJ/channel
• Switching & Timing
  • TON (typ.): 60 µs
  • TOFF (typ.): 300 µs
• Power & Isolation
  • E‑bus current: typ. 130 mA
  • Power contact current: typ. 25 mA + load
  • Isolation: 500 V (E‑bus / field potential)
• Process Image
  • Bit width: 16 outputs (no configuration needed)
• Mechanical & Environment
  • Weight: approx. 55 g
  • Dimensions: 12 mm x 100 mm x 73 mm
  • Material: polycarbonate
  • Operating temp: 0…+55 °C
  • Storage temp: -25…+85 °C
  • Humidity: 95 % non‑condensing
  • Vibration / shock: EN 60068‑2‑6 / EN 60068‑2‑27
  • EMC: EN 61000‑6‑2 (immunity) / EN 61000‑6‑4 (emission)
  • Protection: IP20, variable mounting
• Wiring & Connection
  • Type: flat‑ribbon cable (IDC)
  • Cross‑section: AWG 28, pitch 1.27 mm
  • Stripping: not required
• Approvals
  • CE, UL, ATEX (II 3 G Ex nA IIC T4 Gc)
• Housing
  • EL‑12‑FRC (compact with signal LEDs)

Installation & Commissioning

• Mounting: Snap onto 35 mm DIN rail (EN 60715) with lock.
• Side‑by‑side: Double slot and key connection ensures secure stacking.
• Wiring: Use standard flat‑ribbon cable (AWG 28) – simply press into the IDC connector.
• No addressing: Plug‑and‑play – no configuration or address setting required.
• Maintenance: LEDs help quickly identify faulty channels.

Compatibility & System Integration

• Bus system: EtherCAT – works with all Beckhoff EL/ES terminals.
• Process image: 16‑bit output data, mapped directly.
• Load types: Suitable for ohmic, inductive (e.g., relays), and lamp loads.
• Ideal for: Valve terminals, multi‑pin connector blocks, and distributed I/O.

Package, Warranty & Shipping

• Contents: 1 × EL2872 terminal, documentation download card.
• Warranty: 12 months against defects.
• Dispatch: 12‑24 hours via FedEx, UPS, or DHL.

Expert Review – Manager’s Insight

Simplifies high‑density output wiring. The EL2872 saves panel space and wiring time. Its 16 channels in 12 mm width are impressive. The flat‑ribbon IDC connection is secure and fast – a clear advantage for valve terminals. With short‑circuit protection and fast switching, it is a reliable workhorse for machine builders.

Applications & Suitable Devices

• Valve terminals: Direct connection to multi‑pin pneumatic or hydraulic valves.
• Machine control: Actuating relays, contactors, and indicator lamps.
• Factory automation: Distributed output banks in conveyor systems.
• Compatible with: All Beckhoff EtherCAT masters (CX, BX, IPC).

Comparison with Similar Models

• EL2872 (16‑channel, flat‑ribbon): Best for high‑density valve terminals.
• EL2809 – 8‑channel, screw terminals, 2 A per channel.
• EL2889 – 16‑channel, high‑side outputs, 0.5 A, diagnostic features.
• EL2624 – 4‑channel, relay outputs, 230 V AC.

Frequently Asked Questions

Q1: What cable type works with the EL2872?
A: Standard flat‑ribbon cable, AWG 28, with 1.27 mm pitch. Use IDC connectors.

Q2: Can I connect inductive loads like relays?
A: Yes. The terminal supports inductive loads. The breaking energy is limited to < 150 mJ per channel to protect the outputs.

Q3: Do I need to set any addresses or parameters?
A: No. The EL2872 is plug‑and‑play. It requires no configuration – just map it in your EtherCAT master.

Q4: What is the maximum current per output?
A: 0.5 A per channel, short‑circuit proof. The total current through the common power contact must not exceed 1 A per pin.

Q5: Is this terminal approved for hazardous areas?
A: Yes, it carries ATEX (II 3 G Ex nA IIC T4 Gc) – suitable for Zone 2 gas environments.

Selection Guide – How to Choose

• Need many outputs in a small space? EL2872 gives 16 channels in 12 mm.
• Prefer screw or spring terminals? Consider EL2809 (8‑channel) or EL2889 (16‑channel).
• Require higher current per output? EL2809 offers 2 A per channel.
• Need diagnostic feedback? EL2889 provides short‑circuit and overload diagnostics.
• For valve terminals with flat‑ribbon connectors: EL2872 is the most cost‑effective choice.

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