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Recent ActivityRecent Activity

Acadian Seaplants Grows Capacity by 40 Percent

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Challenge

  • Add capacity by moving to a new seaweed-processing facility without downtime
  • Automate the new system and gain remote-monitoring capabilities

Solutions

  • Rockwell Automation Integrated Architecture® System with Intelligent Motor Control
  • CompactLogix™ PACs control seaweed-processing equipment
  • CENTERLINE® MCCs provide precise motor control and power
  • The EtherNet/IP™-based infrastructure provides flexibility for facility expansions and enables remote monitoring

Results

  • Added 40 percent capacity in new facility and can grow to 250 percent
  • Experienced no downtime during move
  • Automated processing equipment improves production reliability, and reduces hardwiring and maintenance costs
  • Can solve issues more quickly with remote access via EtherNet/IP

Background

Seaweed’s natural nutritional and healing powers have been known for millennia: The Romans applied marine plants to help heal wounds and rashes, while the Japanese made it a staple of their diet. And today, processed seaweed is a key ingredient in everything from human nutritional supplements to animal feed.

Acadian Seaplants is a global leader in this international industry. Based in Dartmouth, Nova Scotia, the company cultivates and processes seaweed for a variety of innovative products. One of those products is crop biostimulants, which are derived from a species of seaweed called Ascophyllum nodosum and are used to improve the health and growth of plants.

Challenge

Acadian Seaplants produces crop biostimulants in liquid and powder formats at its facility in Cornwallis, Nova Scotia, and ships branded products to over 80 countries. Its proprietary production process starts with locally and sustainably-harvested seaweed. Then various bio-active compounds are extracted, clarified, filtered and concentrated. Finally, they are tested for quality, preserved and packaged.

This complex manufacturing process requires a high degree of process control. Before 2006, motor controls and facility communications were hardwired. If the company wanted to change or add a step in the production process, there would often be a need to rewire entire areas of the facility.

Between 2006 and 2008, the company began automating the Cornwallis facility. But the modernization wasn’t enough to meet growing demand. In the last decade, the use of natural biostimulants in agriculture and horticulture has increased substantially and Acadian Seaplants needed to grow and upgrade its biostimulant production facility in response. The company decided to build onto their existing plant to add capacity and automate the new equipment to increase process control and manufacturing efficiency.

Solution

Electrical supplier, Graybar, knew Acadian Seaplants was already using Allen-Bradley® CompactLogix™ programmable automation controllers (PACs) from Rockwell Automation. To help Acadian Seaplants grow capacity without adding hardwiring for motor controls, Graybar proposed using Allen-Bradley CENTERLINE® motor control centers (MCCs) with IntelliCENTER® technology. Enabled by EtherNet/IP™, the MCCs easily integrate with controllers in the existing system.

Acadian Seaplants continued to automate their existing space and increased their production capacity by about 50 percent between 2008 and 2009. But by 2011, the company needed to expand again, and decided to build a much larger plant across the street.

“We had gained a proven, reliable solution in our existing space, but needed to implement it on a much larger scale,” said Wade Hazel, engineering manager for Acadian Seaplants. They also wanted to avoid any downtime so they could continue to meet orders. In the new facility, Acadian Seaplants also wanted to expand their recently implemented integrated MCC and controller solution, and enable remote support to reduce maintenance time.

Over three years, the Acadian Seaplants engineering team moved existing processes and equipment into the new facility, named the Deveau Center. The plant science division gained three times more manufacturing space, meaning they needed more equipment. Given their experience in the 2009 expansion, Graybar knew how to help Acadian Seaplants implement the same MCC solution at a facility five times the size of the original operation.

With counsel from Graybar, the Acadian Seaplants engineering team designed an integrated plant-wide infrastructure for system monitoring and motor control over EtherNet/IP.

The network became critical when the Acadian Seaplants team worked in stages to move existing processes to the new site. To start, the team built a piping system over land and under the street to move liquid product between the two facilities. As the team installed new equipment, they connected it via EtherNet/IP to the existing equipment on the other side of the street.

Acadian Seaplants subscribed to the TechConnectSM service from Rockwell Automation for many years. The service’s 24/7 phone support helped the engineering team solve issues quickly, especially in the early stages of plant automation.

The engineering team installed three CompactLogix PACs to manage all system functions. The PACs seamlessly connect with other system components via the EtherNet/IP network. System information is fed to a desktop computer on-site, where staff can monitor operations in real time.

The Acadian Seaplants team moved the existing CENTERLINE MCCs and installed additional ones to provide precise motor control and power throughout the seaweed-processing facility.

The team easily set up and configured the MCCs using the same software as the PACs – Rockwell Software® Studio 5000 Automation Engineering & Design Environment™. The IntelliCENTER software that monitors the MCC can also send the motor control device information directly to Studio 5000 software. The Rockwell Software Studio 5000® software recognizes the intelligent components in the MCCs, including variable speed drives and full-voltage starters. The add-on profiles immediately provide parameters for each component for faster configuration.

Results

The new seaweed-processing facility was completed in 2014 with no downtime. A bigger plus: Acadian Seaplants gained the production capacity necessary to meet immediate crop biostimulant demand. Already, the facility is operating at 40 percent higher capacity than the previous facility. With its EtherNet/IP-based design, the facility could grow to 250 percent depending on future market demand.

“Our facility isn’t static,” said Hazel. “We may need to change functions one day, do improvements the next or add processes altogether. With all of our controls connected via EtherNet/IP, our wires became virtual wires, and we can make changes a lot faster at a lower cost.”

With integrated MCCs and controllers, Acadian Seaplants gained a more connected, reliable and continuous facility. Information is now shared more seamlessly between processes and operators. In case of any issues, engineers can remotely access the desktop computer, helping to reduce downtime compared to previous on-site visits. Issues automatically appear on the operator screen (HMI) – making them more visible to operators than the previous mechanical blinking lights.

Based on the success of Acadian Seaplants’ expansion, the company is considering similar changes at other facilities. The engineering team has begun to automate processes with CompactLogix PACs at the food science division’s land-based cultivation facility, and would like to move to EtherNet/IP-enabled MCCs at the animal science division’s facilities in the next few years.

The results mentioned above are specific to Acadian Seaplants’ use of Rockwell Automation products and services in conjunction with other products. Specific results may vary for other customers.

Published April 1, 2015

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