White Papers

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  • Power over Ethernet: Myths, Mystery, and the Facts

    Field–level wiring used to be very simple. A sensor was either powered or passive. But when networking PLCs and PACs into the control system network became both practical and popular, engineers started thinking about how to provide power over the same set of wires as the network connection. This white paper discusses how Power over the Ethernet is fast becoming the standard.

    Advantech
    03/11/2009
  • The Benefits of PAC Solutions

    Since the introduction and use of the PLC as a relay replacement device, the uses of small, self contained automation controllers have mushroomed and have changed the complexion and even the architecture of the control system itself. This white paper discusses the benefits of using PACs to solve your company solutions.

    Advantech
    07/15/2009
  • Driving the Networked Industrial Plant – Power over Ethernet

    In the 1990s, industrial plants began to integrate and merge their "islands of automation" by networking devices to programmable controllers and controllers to control systems and HMIs (human machine interfaces). As the number of intelligent devices increased, the demand to supply power to these devices also increased.

    Advantech
    11/18/2009
  • Integrating Distributed Energy Resources into the Smart Grid

    Electrical power generation, transmission and distribution systems thrived for decades with limited intelligence. But present and future demands, particularly the need to incorporate distributed energy resources (DERs) into the generation mix, are necessitating a transition to a smart grid.

    Advantech
    05/19/2010
  • Expanding the Use of Smart Operator Panels

    The evolution of operator interfaces has moved quite far beyond the push button era. In this white paper, Advantech takes a detailed look at smart operator panels.

    Advantech
    04/05/2011
  • Expanding the Use of Smart Operator Panels

    From push buttons to touch screens, operator panels have become smarter, easier to use, and much more capable than ever before. In this white paper, Advantech takes a detailed look at what makes an operator panel work best, what you should know about buying smart operator panels and what to do with one once you have it.

    Advantech
    04/19/2011
  • Installing Automation in Hazardous Areas

    For most process plants, it's not possible for all automation system components to be installed in non-hazardous areas. As a result, some form of protection is required. This paper will explain how to protect automation system components when used in hazardous locations.

    Advantech
    06/15/2011
  • RS-485 -- A Proud Legacy

    Serial digital communications have been one of the strongest backbones of technology, from computer backplanes to industrial control, and they show no sign of being replaced soon. In this white paper, Advantech discusses the serial data communications family of RS-232/422 and 485. It's a proud legacy.

    Advantech
    03/26/2012
  • Gigabit Ethernet: Meeting the Future with Increased Bandwidth

    Much has been written about the use of Ethernet in manufacturing. Since the mid-1990’s, Ethernet networks have become ubiquitous. They are used in numerous locations. This white paper takes you through the history of the Ethernet and the future of gigabit Ethernet in manufacturing.

    Advantech
    09/06/2007
  • PAC Controller Redundancy

    Applications that require high availability, advanced data handling and superior communication capability are a good fit for PAC redundancy. This white paper looks at the benefits of redundancy, options, and implementation details.

    Advantech
    12/09/2013
  • Shaft Grounding &#8212; Fulfilling the Promise of Variable Frequency Drives

    With the rising cost of energy, the use of variable frequency drives (VFDs) is growing at an increasing rate. By optimizing the frequency of a three-phase alternating-current (AC) induction motor’s voltage supply, a VFD controls the motor’s speed and torque while providing energy savings. And, these energy savings can be quite substantial —— 20% or more —— making VFDs a “green” solution as well as a wise money-saving investment.

    However, in order to be truly “green,” a technology must be sustainable as well as energy efficient.

    Adam Willwerth, Electro Static Technology
    04/17/2009
  • Shaft Grounding – Fulfilling the Promise of Variable Frequency Drives

    With the rising cost of energy, the use of variable frequency drives (VFDs) is growing at an increasing rate. By optimizing the frequency of a three-phase alternating-current (AC) induction motor’s voltage supply, a VFD controls the motor’s speed and torque while providing energy savings. And, these energy savings can be quite substantial — 20% or more — making VFDs a “green” solution as well as a wise money-saving investment.

    However, in order to be truly “green,” a technology must be sustainable as well as energy efficient. Yet the currents induced on motor shafts by VFDs can wreak havoc with motor bearings, dramatically shortening motor life and severely diminishing the reliability of systems. To mitigate these currents and realize the full potential of VFDs, a cost-effective method of shaft grounding is essential.

    Adam Willwerth, Development Manager, Electro Static Technology
    02/02/2009
  • How to Develop High Reliability Ethernet Control Systems Using Media Redundancy

    A fault-tolerant Ethernet control network requires not only redundant switches and cables, but also redundancy down to the I/O. Otherwise, we still have single-point-of-failure issues. However, building redundancy into a network requires I/O devices to manage communication over duplicate paths.

    Acromag
    08/08/2008
  • Introduction to the Two-wire Transmitter and the 4-20mA Current Loop

    In many control loops, we use 2-wire transmitters to convert various process signals representing flow, speed, position, level, temperature, pressure, strain, pH, etc., to 4-20mA DC for the purpose of transmitting the signal over some distance with little or no loss of signal. This paper reviews the operation and advantages of the 4-20mA transmission standard and the use of loop-powered transmitters.

    Acromag
    05/03/2011
  • Introduction to Ethernet I/O Communication Protocols

    This white paper provides an in-depth explanation of two popular Ethernet-based control system protocols, Ethernet/IP and Modbus TCP/IP. From the perspective of configuring networked I/O devices, we discuss concepts such as determinism, TCP/IP stack, CIP, data packets, addressing, and read/writes.

    Acromag
    04/09/2012
  • Introduction to the 2-Wire Transmitter and 4-20mA Control Loop

    In this paper, we review the operation and advantages of the 4-20mA transmission standard and loop-powered transmitters. The discussion explains sink vs. source wiring, power requirements, voltage drops, proper grounding, transmission distance, signal noise, live zero calibration and more.

    Acromag
    09/24/2012
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