DELTA DVP64EH00R3 DVP-EH3 Series Standard PLC 64 I/O

Product Overview

The DVP64EH00R3 (DVP64EH00R3) is the flagship high-performance main processing unit within Delta's DVP-EH3 series, engineered for complex control tasks requiring high-speed execution and high I/O density. Featuring 64 integrated I/O points (32 inputs and 32 relay outputs), this base unit provides a robust foundation for large-scale industrial automation projects, such as automated storage systems, multi-stage textile machinery, and high-precision packaging lines. The EH3 series is distinguished by its superior CPU processing speed and enhanced data register capacity, allowing it to handle sophisticated motion control and data logging tasks without compromising system responsiveness. With its AC power input and reliable relay outputs, the DVP64EH00R3 ensures long-term operational stability in demanding electrical environments.

Technical Configuration

As a Main Processing Unit (MPU) of the EH3 generation, the DVP64EH00R3 offers advanced hardware capabilities including four sets of hardware high-speed counters and high-speed pulse outputs. The "R3" designation identifies the output type as relay, providing high current-carrying capacity for driving solenoids, contactors, and small motors directly. The unit supports extensive expansion capabilities via the DVP-S series right-side modules and high-speed left-side modules, allowing for the integration of analog I/O, temperature measurement, and specialized communication protocols. Its architecture is optimized for execution speed, with basic instructions processing at approximately 0.24 microseconds, making it one of the fastest compact PLCs in its class.

Technical Specifications

Technical FAQs

Does the DVP64EH00R3 support high-speed pulse output for servo control?

While the MPU has high-speed logic processing, the "R" (Relay) version is limited by the mechanical switching frequency of the relays. For high-speed pulse-train (PTO) applications requiring servo or stepper control, a Transistor (T) output model or an additional high-speed expansion module is required to achieve the necessary kHz frequencies.

What is the maximum current rating for the relay outputs?

The relay outputs are typically rated for 2 A per point (resistive load). For inductive loads such as large contactors or solenoid valves, it is highly recommended to use external surge suppressors or interposing relays to protect the internal PLC contacts from arcing and premature failure.

How many expansion modules can be connected to this base unit?

The DVP64EH00R3 can be expanded up to 512 I/O points by adding right-side expansion modules. Additionally, it supports up to 8 high-speed left-side modules for specialized functions like Ethernet communication or high-resolution analog processing.

Engineering & Installation Guide

• Relay Protection: When driving inductive loads (coils, motors), install a snubber circuit (RC for AC, diode for DC) across the load. This prevents the back-EMF generated during coil de-energization from damaging the PLC's internal relay contacts, significantly extending the service life of the hardware.

• AC Power Wiring: Use 16-22 AWG wire for the AC power input (L/N). Ensure the ground (G) terminal is connected to a dedicated high-quality earth ground to minimize electromagnetic interference (EMI) and ensure the accuracy of the internal high-speed counters.

• Thermal Considerations: The EH3 series is a high-performance CPU that generates moderate heat. Mount the unit on a vertical DIN rail with at least 50 mm of clearance above and below the housing to facilitate natural convection cooling. Ensure the cabinet ambient temperature does not exceed 55 deg C.