Delta DVP04AD-S2 DVP-S Series 4-Channel Analog Input Module

Overview

The Delta DVP04AD-S2 is a DVP-S series analog input module delivering four channels of 24VDC-powered analog signal acquisition for Delta’s compact DVP-series programmable logic controller platform. As small and mid-sized manufacturing facilities across the region standardize on cost-effective, compact PLC architectures for process monitoring, the DVP04AD-S2 has become a common building block for engineers who need reliable voltage and current signal conversion without the expense of a full-scale distributed I/O system. Each channel accepts either voltage or current analog input signals from field transmitters and converts them into a 14-bit digital value the host DVP-series CPU can use directly in ladder logic.

With engineering support in Muscat, Seven Star LLC proudly supplies the Delta DVP04AD-S2 analog input module to industrial clients throughout the Sultanate of Oman, Muscat, and the broader GCC region. From small manufacturing lines to utility monitoring panels, our engineers help specify and source Delta DVP-series hardware so plant control systems remain supported and correctly documented from day one.

Operating Principle

The Delta DVP04AD-S2 operates on an analog-to-digital conversion principle common to PLC expansion modules of this class. Each of its four input channels can be individually configured for voltage input (-10V to +10V or -6V to +10V) or current input (-20mA to +20mA or -12mA to +20mA) through control register CR#1, depending on the connected transmitter’s output type. An onboard 14-bit analog-to-digital converter samples the incoming signal and translates it into a proportional digital value that the host DVP-series CPU reads over the module’s local expansion bus.

Because the conversion happens locally on the module rather than requiring an external signal conditioner, the DVP04AD-S2 simplifies panel wiring for common process variables such as pressure, level, and flow transmitters that output standard 4-20mA loop signals. The practical consequence for plant engineers is a straightforward, low-cost path to bringing analog process data into ladder logic without dedicated signal conditioning hardware, while maintaining accuracy suitable for general-purpose process monitoring and control applications.

Engineering Design of the Delta DVP04AD-S2

The physical architecture of the Delta DVP04AD-S2 reflects Delta’s compact DVP-S series expansion module philosophy: a slim DIN-rail mountable enclosure that clips directly onto a DVP-series main CPU unit or an adjoining expansion module, extending the system’s I/O count without a separate backplane. Screw-type I/O terminals accept 22-16AWG wire, and the module clips onto a 35mm DIN rail.

The module integrates POWER, RUN, and ERROR indicators plus I/O point indicators on its front face for at-a-glance diagnostics during commissioning and troubleshooting, and its labeled terminal layout (V1+/I1+/COM/FG per channel) simplifies field wiring verification against the panel’s loop diagrams. The DVP04AD-S2 is powered from an external 24VDC supply (20.4 to 28.8VDC, 2W maximum), and it does not occupy any digital I/O points on the host PLC.

Key Features

Engineers in Oman specifying the Delta DVP04AD-S2 for a DVP-series PLC system benefit from a feature set focused on simplicity, flexibility, and low installation cost. Core capabilities include:

• Four analog input channels individually configurable for voltage or current signal types.
• 14-bit resolution on voltage input (1.25mV per LSB) and 13-bit resolution on current input (5uA per LSB).
• Direct compatibility with standard 4-20mA and 0-10V industrial transmitter outputs.
• Compact DIN-rail expansion module design powered from an external 24VDC supply (20.4 to 28.8VDC).
• Screw I/O terminals (22-16AWG) with a labeled V+/I+/COM/FG layout for each channel.
• Front-panel POWER, RUN, and ERROR indicators plus I/O point indicators for rapid visual diagnostics.
• Integration with Delta DVP-SS, DVP-SA, DVP-SX, DVP-SC and DVP-SV series CPUs.
• Cost-effective alternative to distributed I/O for small and medium-sized control panels.

Applications

The simplicity and low cost of the Delta DVP04AD-S2 make the Delta DVP04AD-S2 a natural fit for small and medium manufacturing facilities, utility pump stations, and packaging machinery across Oman’s growing industrial sector. OEM machine builders and system integrators supplying compact production equipment to Muscat and across the Sultanate frequently specify the DVP04AD-S2 for reading pressure transmitters, level sensors, and temperature transmitters directly into a DVP-series PLC without the expense of a distributed I/O network.

Water treatment plants, agricultural processing facilities, and light manufacturing lines throughout the Sohar and Salalah economic zones also depend on DVP-series analog input modules to bring process variables into simple, cost-effective control systems. Backed by manufacturer datasheet documentation, Seven Star LLC distributes the DVP04AD-S2 to panel builders, system integrators, and plant maintenance teams who require genuine hardware, accurate lead times, and technical enquiry support for both new machine builds and legacy panel expansions.

Technical Specifications

Full technical parameters for the Delta DVP04AD-S2 DVP-S series analog input module are listed below; procurement teams sourcing the Delta DVP04AD-S2 for a new build or spares order should confirm CPU firmware compatibility against these values:

Channel Configuration and Control Registers

Each of the four channels of the DVP04AD-S2 is set individually in control register CR#1. Mode 0 selects voltage input from -10V to +10V, mode 1 selects -6V to +10V, mode 2 selects current input from -12mA to +20mA, mode 3 selects -20mA to +20mA, and mode 7 disables an unused channel. The module holds 49 control registers of 16 bits each, which a DVP series slim type PLC reads and writes with the FROM and TO instructions.

Averaging is configurable per channel with a setting range of K1 to K20, the factory value being K10, and offset and gain can be adjusted for each channel. Digital values are returned as 16-bit two's complement numbers, and CR#30 reports error status such as abnormal power, mode error, or a channel input that is out of range.

Accuracy, Wiring and Installation Notes

Delta specifies an overall accuracy of 0.5% of full scale at 25 °C and 1% of full scale across 0 to 55 °C, with a conversion time of 3 ms multiplied by the number of channels in use. The analog circuit is isolated from the digital circuit by an optocoupler, but the analog channels are not isolated from one another.

Delta recommends shielded input cables of equal length, below 200 m, with wire resistance under 100 Ω, kept apart from power cables. When a channel is used for current input, V+ and I+ of that channel must be shorted. Leave at least 50 mm of clearance around the unit in the cabinet for heat dissipation.

Why Choose Seven Star LLC

When sourcing the Delta DVP04AD-S2, buyers can request a formal quotation and the manufacturer datasheet from Seven Star LLC to confirm the module suits their application. As a trusted supplier of Delta products for Oman and the GCC, Seven Star LLC can provide manufacturer documentation on request, and engineering support for I/O sizing, transmitter matching, and PLC program integration. We source on request, with lead time confirmed at quotation, along with local technical support for selection and troubleshooting.

Get a Quote

To submit a formal Request for Quote (RFQ), check current availability and lead time, or request complete technical datasheets for the Delta DVP04AD-S2 DVP-S series analog input module, please contact the instrumentation and automation division at Seven Star LLC today. Working closely with plant engineers in the region, our engineers are ready to assist with rapid commercial sourcing, panel design support, and DVP-series PLC system integration.

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