DELTA DVP80EH00R3 DVP-EH3 Series PLC Main Processing Unit

Product Overview

The DVP80EH00R3 (DVP80EH00R3) is the flagship high-end Main Processing Unit within Delta’s DVP-EH3 series, offering a robust 80-point I/O density for complex industrial control. Designed for high-speed precision and large-scale automation, this AC-powered base unit features a dual-core processor that separates peripheral operations from main execution tasks, ensuring high-speed instruction processing. In demanding applications such as high-speed bottling lines, multi-axis packaging machinery, and central utility monitoring, the DVP80EH00R3 provides the necessary logic density and relay output reliability to manage extensive field devices while maintaining a compact footprint.

Technical Configuration

The architecture of the DVP80EH00R3 is optimized for sophisticated motion and sequence control. It features a high program capacity of 30k steps and provides 80 integrated I/O points, distributed between high-speed digital inputs and robust relay outputs. The "R3" designation signifies its Relay output type, which is ideal for switching high-current AC loads or interfacing with diverse voltage levels without additional isolation. For communication, the unit supports dual RS-232 and RS-485 ports with Modbus ASCII/RTU protocol support, allowing for seamless integration into HMI and SCADA networks. It also supports high-speed counters up to 200 kHz, making it suitable for precise position tracking and encoder feedback.

Technical Specifications

Technical FAQs

Does the DVP80EH00R3 support expansion for additional I/O?

Yes, the DVP-EH3 series is highly modular. You can connect up to 512 total I/O points by adding EH series digital, analog, or temperature expansion modules to the right side of the main unit.

What is the maximum switching frequency for the Relay outputs?

As a relay-type PLC, the switching frequency is limited by mechanical life and response time (approx. 10 ms). For high-speed PWM or pulse-train output (PTO) applications, such as servo control, a transistor-type unit (e.g., DVP80EH00T3) is required.

How does the dual-core processor benefit my application?

The dual-core architecture allows the PLC to process communication requests (HMI/SCADA) and data logging on one core while the logic execution and I/O scanning remain uninterrupted on the other, preventing "scan time jitter" during heavy network traffic.

Engineering & Installation Guide

• Relay Protection and Longevity: When controlling inductive loads (solenoids, contactors, or motor starters) with the relay outputs, always install a snubber circuit (RC for AC loads, flyback diode for DC loads). This prevents back-EMF arcing, which protects the internal relay contacts from premature pitting and welding.

• Wiring and Interference: To maintain the 200 kHz high-speed counter accuracy, use shielded twisted-pair cabling for input signals. Ensure the 100-240 VAC power input is wired through a dedicated isolation transformer if the local grid suffers from high-frequency noise or switching surges from large VFDs.

• Thermal and Mounting Orientation: Always mount the unit horizontally on a 35mm DIN rail. Maintain a minimum of 50 mm clearance around all sides of the PLC. The DVP80EH00R3 uses natural convection for cooling; blocking the ventilation slots can lead to internal heat buildup and reduce the lifespan of the integrated power supply.