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DO801-eA Digital Output Module

1. Product Title

DO801-eA Digital Output Module (Industrial-Grade High-Reliability Digital Signal Output for Automation Control Systems)

2. Product Data

The DO801-eA is an industrial-grade digital output module designed to convert digital control signals from PLC/DCS systems into switching signals for driving external devices such as contactors, solenoid valves, relays, and indicator lamps. It features 8 independent digital output channels, supporting both sinking (NPN) and sourcing (PNP) output types to accommodate diverse industrial actuators. Each channel provides a maximum switching current of 2A, enabling direct control of mid-power devices without additional relays. With 2.5kVrms isolation between channels and from the backplane, it prevents electromagnetic interference (EMI) and ground loops in complex industrial environments. Compatible with mainstream communication protocols (Profinet, Modbus-TCP), it is widely used in manufacturing automation, process control, and machinery control systems requiring reliable digital switching operations.

3. Product Description

This module adopts a compact DIN rail-mountable design (35mm standard rail) for space-efficient installation in control cabinets. It integrates comprehensive protection functions per channel: short-circuit protection (auto-recovery), overcurrent protection, and surge protection (2kV ESD, 4kV EFT) to withstand transient voltage spikes and prevent damage from external circuit faults. The front panel is equipped with LED indicators for each channel (output status: ON/OFF) and a module power indicator, enabling quick visual confirmation of operational status. It supports hot-swappable installation (with compatible backplanes), allowing module replacement without powering down the entire system—minimizing downtime in critical applications. The operating temperature range of -25℃~+70℃ ensures stable performance in harsh industrial conditions, and it complies with international standards (IEC 61131-2, EN 61000-6-2) for EMC and safety.

4. Detailed Parameters

Parameter Category	English Parameters
Number of Output Channels	8 independent channels
Output Type	Configurable for sinking (NPN) or sourcing (PNP)
Output Voltage	24V DC (15V~30V DC tolerance)
Maximum Output Current	2A per channel (5A total for all channels)
Switching Time	≤1ms (ON to OFF and OFF to ON)
Isolation	2.5kVrms (channel-to-channel, channel-to-backplane)
Protection Features	Short-circuit protection (auto-recovery), overcurrent protection, 2kV ESD, 4kV EFT
Power Supply	24V DC (±10% tolerance)
Power Consumption	≤8W (full load)
Operating Temperature	-25℃~+70℃
Storage Temperature	-40℃~+85℃
Protection Class	IP20 (module body)
Installation Method	35mm standard DIN rail mounting
Dimensions (L×W×H)	120mm×80mm×35mm (typical)
Compliance Standards	IEC 61131-2, EN 61000-6-2 (EMC), UL 508

5. Advantages & Features

① Flexible Output Configuration: Supports both NPN and PNP types, compatible with diverse industrial actuators; ② High Current Capacity: 2A per channel enables direct control of mid-power devices, reducing external relay requirements; ③ Comprehensive Protection: Short-circuit, overcurrent, and surge protection enhance system reliability; ④ Hot-Swappable Design: Allows maintenance without system shutdown, minimizing downtime; ⑤ Easy Monitoring: Channel-specific LEDs provide real-time output status for quick troubleshooting.

6. Application Fields

① Manufacturing Automation: Control of solenoid valves, conveyor belt motors, and grippers in production lines; ② Process Industry: Operation of valve actuators, pump contactors, and alarm buzzers in chemical and petrochemical plants; ③ Machinery Control: Activation of hydraulic/pneumatic valves, cooling fans, and safety interlocks in industrial machinery; ④ Material Handling: Control of conveyor drives, sorting mechanisms, and position locks in logistics systems; ⑤ Building Automation: Operation of lighting relays, damper actuators, and access control locks in smart buildings.

7. Precautions

① Ensure output voltage matches 24V DC (15V~30V range) to prevent damage to external devices; ② Do not exceed the maximum current per channel (2A) or total current (5A) to avoid overheating; ③ Configure output type (NPN/PNP) correctly to match external devices—incorrect configuration will cause control failure; ④ Separate routing of output lines from high-voltage power lines to avoid EMI-induced malfunctions; ⑤ When performing hot-swap, follow system procedures to prevent transient voltage spikes; ⑥ Avoid installation near strong magnetic fields or high-temperature sources (>70℃) to maintain performance stability; ⑦ Regularly check terminal connections—loose contacts may cause intermittent operation or increased resistance

The structure and details of the product：

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DO801-eA Digital Input Module