Convergence must include key automation solutions that are often overlooked, such as variable speed AC drives, to fully leverage the energy management, asset management, and overall system performance solutions that can have the greatest effect on productivity and profitability.

1. ARC VIEW
OCTOBER 17, 2013
Services Oriented Drives Support Critical
Energy Management and Asset Management
Applications thanks to IT/OT Convergence
By Craig Resnick
Keywords
Information Technology, Services, Control, Convergence, AC Drives, Energy Management, Asset Management, Internet of Things
Overview
All manufacturing and processing industries face issues that frequently
require the convergence of plant automation and business systems. These
issues include environmental and business sustainability, preserving and
extending the life of capital assets, increasing asset availability and utilization,
maximizing
operational
effectiveness,
reducing
fixed
costs,
minimizing variable costs, and empowering workers.
Convergence must include key automation
solutions that are often overlooked, such as
variable speed AC drives, to fully leverage
To address these issues, end users and OEMs
alike must move beyond simply automating
and integrating production processes to au-
the energy management, asset management,
tomating and integrating workflows and
and overall system performance solutions
businesses processes. This requires a conver-
that can have the greatest effect on
gence that intertwines plant automation
productivity and profitability
systems with business systems.
This convergence moves toward single sys-
tems to accomplish tasks, streamline operations, and connect customers
and suppliers, all with the goal of lowering costs and adding agility.
This convergence should extend from the major plant and enterprise systems used for information technology (IT) to major plant systems (DCS,
PAC, PLC, etc.), and ideally, right down to the intelligent devices on the
plant or factory floor, such as variable speed AC drives. The latter is especially important to enable industrial facilities to fully leverage the potential
of the latest applications for energy management and asset management, as
well as optimize overall system performance. In this manner, enterpriselevel energy and asset management applications can take advantage of real-
VISION, EXPERIENCE, ANSWERS FOR INDUSTRY

2. ARC View, Page 2
time, online data from intelligent plant floor equipment, such as Ethernetconnected drives, and embedded IT-enabled services to enhance flexibility,
capability, and application performance.
At least one leading automation supplier has begun to use the term, “services oriented drives,” to describe this new class of intelligent, Ethernetconnected drives that supports the critical need for convergence between
information technology and operational technology. This concept is consistent with ARC Advisory Group’s ongoing research into IT/OT
convergence, predictive plant asset management (PAM), services oriented
architectures (SOA), and the emerging Industrial Internet of Things (IoT).
Adding Business-Centric to Applications-Centric
For many years, a key requirement of automation suppliers was to design
and offer applications-centric solutions able to perform the specific tasks
and meet requirements unique to each vertical industry. However, these
solutions must also be business-centric; able to help companies reduce their
energy consumption, manage their assets, and enhance overall production
performance. All devices being deployed, including variable speed AC
drives, must address the primary concerns of end users and OEMs alike.
These include increasing overall equipment effectiveness (OEE) and decreasing total cost of ownership (TCO). The new generation of services
oriented drives can help meet these objectives because it takes into account,
not only the drive, but also the complete product chain: motors, drives, and
actuators. These requirements are particularly important in energy- and
asset-intensive industries such as water & wastewater, oil & gas, mining &
metals, and food & beverages.
Services Oriented Drives and Energy Management
One of the primary market demands for services oriented drives is to help
address global energy consumption issues. One place to start is the use of
AC drives in pumping systems. Across industries, experts estimate that 25
percent of the electricity consumption comes from pumping systems and 40
percent of the overall lifecycle cost of a pumping system relates to energy.
Variable speed AC drives are key devices used to save energy in pumping
applications in which approximately 80 percent of the time, pumps typically operate at only 60 percent of their full speed capacity. By reducing the
flow to 50 percent, pump energy consumption could be reduced by 88 percent. Services oriented drives manage such system intelligently; hence they
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3. ARC View, Page 3
can be employed in conjunction with energy management systems to optimize energy management.
Additional energy savings could be realized if the convergence in technologies made possible by modern services oriented drives were combined with
excellence in electrical characteristics. For example, if AC drives with a
THDi of ≤ 48 percent were replaced with low harmonic AC drives with a
reduced THDi of ≤ 5 percent, users would realize a resulting energy savings
of approximately 20 percent in the losses at the associated cables and transformers. Additional advantages of harmonic mitigation would include
reduced costs by eliminating the need for oversizing AC distribution
equipment and/or by lengthening effective product lifecycles.
Energy Monitoring and Embedded Services
To optimize energy management, it's critical to be able to monitor and integrate both energy consumption and power dynamics for the entire system
(motors/drives/actuators), and to provide the energy management application with additional contextual information, including real-time events,
alarms, drifts, and historical data. Appropriate data granularity is required,
Embedded services include historians for
data logging and recording energy usage,
and mobility connectivity so real-time
information can be locally or remotely
accessible via smart phones, tablets, and
plus analytics capabilities to be able to convert
all these data into meaningful information so
management decision can be made locally at
the field or the plant level, or remotely via
intranets or the Cloud.
other wireless devices.
Services oriented drives can provide services to
deliver the transparent and instantaneous, prepackaged and ready to use
information upon process startup; because these services are embedded, it
could help eliminate the need to develop or integrate additional drivesrelated software or applications. Services could include historians for data
logging and recording energy usage, and mobility connectivity so real-time
information could be accessed locally or remotely via smart phones, tablets,
and other wireless devices.
Services Oriented Drives and Asset Management
More effective asset management is another emerging requirement for today’s asset-intensive industries.
Services oriented drives can provide embedServices oriented drives can provide
ded maintenance functionality (services) to
embedded functionality to support both
preventive maintenance based on
schedules and condition-based predictive
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• 3 Allied Drive

4. ARC View, Page 4
support both schedule-based preventive maintenance and condition-based
predictive maintenance. The latter utilizes equipment and process data
gathered at the drive level, but typically processed into actionable information remotely at the plant or enterprise system level.
Predictive
maintenance involves applying condition-based monitoring techniques to
collect and analyze asset data to better understand asset performance and
perform appropriate maintenance before impending issues can negatively
impact plant performance, availability, or safety.
Converging with Plantwide Asset Management Systems
To support traditional schedule-based, preventive maintenance and enable
condition-based, predictive asset management, ARC is seeing a significant
increase in the number of process plants and utilities that are implementing
plant- and/or enterprise-level asset management systems. Predictive maintenance, in particular, requires the integration of key data and information
from AC drives. Ethernet-connected services oriented drives, with their
additional embedded capabilities, simplify this integration.
For asset management applications, these embedded capabilities can include object-oriented services for process devices (such as drives, motors,
and pumps); ISA 88- or ISA 95-related services; and dynamic integrated
alarming functionality; plus embedded mobility services to enable remote
access to asset information, such as pump state, number of starts, running
hours, as well as technical documentation and enriched data. Mobility services also enable remote specialists to provide application, diagnostics,
analysis, consulting and other services.
Services Oriented Drives and Systems Performance
Services oriented drives could also help overcome many systems performance challenges. Built-in Ethernet connectivity could help simplify
integration with other plant and enterprise systems and applications to
help improve process and asset performance. In terms of scalability, services oriented drive functionality could range from a standalone product to a
solution approach in which the drives are integrated with systems, such as
telemetry, PACs, PLCs, DCSs and SCADA, as well as devices via servicesoriented architecture (SOA) and open technologies, such as FDT Device
Type Managers (FDT DTMs).
Clearly, to ensure data security and integrity, appropriate security standards, processes, and standards must be put in place. Built-in intelligence
©2013 ARC • 3 Allied Drive • Dedham, MA 02026 USA • 781-471-1000 • ARCweb.com

5. ARC View, Page 5
and application functionality embedded as services could also support
equipment and process optimization schemes. For example, services
oriented drives can contribute to merge production and asset management
systems along with energy management systems. Thanks to object-oriented
services, the user can have a full and accurate vision of the process and
hence can take more relevant decisions.
Conclusion
End users and OEMs need to re-examine their automation and operations
management strategies and develop plans to break down the remaining
barriers to information visibility, collaboration,
Services oriented drives not only play a key
and unified plantwide control to enable opera-
role in drives optimization, but also in the
tional excellence and improve overall business
managed convergence between plant floor
devices, controllers, energy and asset
management systems, and business systems.
performance.
ARC believes that the concept of services
oriented drives with web technology standards,
built-in Ethernet connectivity to simplify plant- and enterprise wide integration, built-in intelligence,
and
key
energy
management, asset
management, and system performance improvement functions embedded
as services, plays well with this vision and could represent a key component in the emerging Industrial Internet of Things.
For further information or to provide feedback on this ARC View, please contact
your account manager or the author at cresnick@arcweb.com. ARC Views are published and copyrighted by ARC Advisory Group. The information is proprietary to
ARC and no part of it may be reproduced without prior permission from ARC.
©2013 ARC • 3 Allied Drive • Dedham, MA 02026 USA • 781-471-1000 • ARCweb.com