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Case Study

Adding functionality with a Maple Systems HMI + PLC

De Dietrich Process Systems is composed of the organizations formerly known as De Dietrich Glass Lining, Rosenmund-Guedu, and QVF Process Systems. Through the integration and synergies of these three companies, De Dietrich Process Systems has become one of the most comprehensive global suppliers of engineered systems, equipment and services for the fine chemical and pharmaceutical industries.

Case Study - Adding functionality with a Maple Systems HMI + PLC

De Dietrich Process Systems

Industry: Machinery
Location: New Jersey, USA

Project Scope

Jake Davis, Product Engineer for De Dietrich Process Systems, Inc contacted us for help with a redesign of the Powder Pump. The Powder Pump is a dense-phase pneumatic conveying system that eliminates the need to manually handle solids and minimizes other potential hazards by providing a closed system to transfer materials such as powders, prills, granules, flakes, etc. in a safe and contained manner.

The Powder Pump operates via a series of pressure and vacuum valves that turn on and off in an automated sequence to manage the transfer and flow of powder from the source equipment to the receiving vessel. The proposed application utilizes a Maple Systems 7.0" touchscreen with an integrated IO module.

  1. Develop the PLC program for the Maple Systems HMI+PLC that meets the functional requirements as described by the customer. The project will include 10 discreet inputs/outputs and 3 alarms as described in the table.
  2. Integrate the PLC program with an existing HMI project.
  3. Perform function testing and integration testing in person and/or remotely with De Dietrich personnel.

Project Scope
Project Scope


Testing was performed remotely with through collaboration between the Maple Systems Applications Engineer and De Dietrich Machine Operator using remote access software. After testing, the program worked as expected and the customer was able to move ahead with their project.

Watch the Powder Pump with PLC controls in action

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Long renowned in the Industrial Automation industry for the quality of technical support we have provided for decades, Maple Systems has a reputation for connecting customers with someone who knows our products inside and out. Whether it is one of our trusted System Integrator partners, Distributors, or our own engineering team, we are happy to connect you with a knowledgeable engineer dedicated to understanding your application.

Why Class 1 Division 2?

Application Engineering

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Supported Products

HMC Series
HMI+PLC Series

Our HMC series combines a Touch Screen HMI and PLC all in one unit. Utilized worldwide to employ diverse applications, our HMI PLCs lower costs, save space, and feature options including: Serial and Ethernet communication, support for Class I, Division 2 installations, and numerous I/O configurations. What's more, our HMI PLCs provide an affordable combination of display and control in a single package and programmed by using our MAPware7000 software, which allows you to have web server functionality, data logging, recipes, graphs, alarms, trending, create objects with multiple tasks, and more.

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