Choosing the right PLC panel

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Programming logic controller (PLC) panels come in almost every shape and size with some of them being freestanding and others being wall-mounted and choosing the right solution for a particular application can be difficult.

David Manney, L&S Electric
11/18/2016

Programming logic controller (PLC) panels come in almost every shape and size with some of them being freestanding and others being wall-mounted and choosing the right solution for a particular application can be difficult. Courtesy of: L&S ElectricControlling equipment has always been of interest in industrial applications. Before modern-day computers came into existence, a series of relays controlled that equipment and may have numbered into the thousands. Any updates required expensive and time-consuming manual labor by electricians who needed to rewire all of the relays.
The adoption of digital computers gave rise to the modern programmable logic controller (PLC): a digital computer utilized for the automation of various processes within an industrial facility. The PLC is designed for applications ranging from controlling parts of an assembly line to automating and controlling the light fixtures in an establishment.
There are similarities between a personal computer and a controller. Both a PLC and a personal computer have a CPU, memory, and input/output (I/O) units. On the other hand, a controller is built for industrial applications. It is designed to operate under harsh environments often seen in many facilities. In essence, the PLC and a PC gather and release information.
The PLC panel can be used in a wide range of industrial applications, primarily for automating processes and increasing control over critical systems. The processor controls electrical power and is commonly referred to as an automation panel. PLCs are utilized in many industries including:

  • Automotive industry: the automotive industry is one of the largest users of PLCs and one of the first industries to embrace factory automation fully. The industry still makes use of automation through PLC panels on an ongoing basis.
  • Marine: from controlling specific parts of the vessel to a full vessel system, it is an important part of maintaining operation where failures can cause severe consequences.
  • Power generation: PLC panels can be used for some processes within a power generation facility, such as automating the soot blower controls
  • Paper making: PLC panels can be used for controlling many processes within the paper mill industry.
  • Automation control: The applications that achieve automation through the use of PLCs include HVAC systems, car wash systems, material handling, and conveyor systems

 
RELATED PRODUCT:  IDEC PLC+HMI SmartAXIS
 
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Inductive Factor 1 Sensors

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sensorConstant distance towards any metal

Inductive Factor 1 sensors offer the great benefit of maintaining the same sensing distance towards all metals. Unlike standard sensors where this value changes, depending on the material. The benefits of Factor 1 sensors are obvious: This uniform distance offers outstanding flexibility in system conception and sensor installation. Contrary to conventional sensors, Factor 1 sensors feature enhanced sensing distance towards many different metals. Hence, they are even perfect for applications with variable objects.
Your benefit:

  • Utmost flexibility in construction and installation „
  • Uniform, large sensing distance towards any metal „
  • Shorter installation times, thanks to minimal adaptation effort „
  • Eased alignment thanks to large sensing distance „
  • Reduced sensor variety – the same sensor will match different applications

 
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Different Types and Applications Of Totalizing Counters

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Totalizers are counters that “total” the number of cycles applied to their inputs. The totalizing function does not provide control outputs or preset limits, although some of our multi-function products have the totalizing capability as well as output and control functions. They may be a mechanical counter, electromechanical counter or an electronic counter, all of which may be resettable or non-resettable.

Mechanical Counters

Mechanical totalizing counters typically use printed wheels or drums to display the count value and are actuated by an external force on a lever or shaft in a reciprocating or rotating action. Mechanical totalizing counters are very robust in their construction and are often found in severe environments which could destroy other types of counters.

Applicationfabric_machine

A mechanical totalizing counter can be used as a yardage counter for sheet goods, fabric, upholstery, etc. in a factory or commercial setting.

Typical Veeder-Root Counter

743415-005 Worm Drive is part of the 7234 series and pairs well with 15537-070  Measuring Wheels.

Electromechanical Counters

Electromechanical totalizing counters generally are operated by an electrical pulse from a switch or relay and increment counts as the pulses are applied. Certain models have counting coils designed as “continuous duty” which means that the voltage applied to the counter may be of extended length or continuous without causing damage to the coil. They are typically panel-mounted or base-mounted and offer a low to mid-range cost solution for numerous applications.

Applicationpinball

An electromechanical totalizing counter can be used to count cycles in a gaming machine.

Typical Veeder-Root Counter

779086-006 is part of the 7790/7791 Series. This series of economical miniature totalizers is available in all popular mounts and operating voltages.

Electronic Counters

Electronic totalizing counters are almost always panel-mounted and generally have a good degree of environmental protection making them suitable for wet, damp, or dusty locations. They may be self-powered by an internal battery or externally powered, and are designed to accept a wide range of count inputs like dry contact closures, voltage pulses, TTL level inputs, and quadrature inputs from incremental encoders. Some models offer scalable inputs, meaning that the number of input pulses can be scaled as they come in to result in a readout of more meaningful units of measurement, often referred to as engineering units.

Application

An electronic totalizing counter can be used as a maintenance or usage counter (for revenue) in a copier machine.

Typical Veeder-Root Counter

C342-0462 is one counter in the C342 Totalizing Counter series. This series provides ultra-compact 1/32 DIN totalizers available with LCD or LED display and AC/DC inputs.
Totalizing counters, in all their various types, is an important component in a myriad of applications. So, choose Veeder-Root totalizing counters for a totally reliable, durable, and accurate solution!

by Phillip Warwick – Eagle Signal / Veeder-Root

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Zone 1 Hazardous Area Rated Incremental Encoders

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Zone 1 Hazardous Area Rated Incremental Encoders

The new EN42 hollow-shaft and EN44 hub-shaft incremental encoders eliminate the cost, guess work and hassle of installing a barrier thanks to encapsulated electronics. The EN series offers ATEX, CSA and IECEx triple certification and a powerful signal driver for universal use in oil & gas equipment applications.
 

en-series-atex-csa-iecex-certsATEX, CSA, IECEx Triple Certified

With enforcement of regional certifications on the rise, the EN series is a flexible solution for zone 1 use with ATEX, CSA and IECEx certifications. The EN series also offers the industry’s leading operating temperature range of -50° to 100° C.

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High Power Line Driver Available

The EN series offers a high power mosfet line driver (10-30 VDC) is for applications requiring a long cable run to ensure reliable signal output without sacrificing performance.

en-series-wiringEasy to Install with No I.S. Barrier Needed

Both the EN42 and EN44 offer encapsulated electronics with increased safety interface for zone 1 use eliminating the need for a separate I.S. barrier and the guesswork to install one. The EN44 also offers a standard B100 mounting flange and integrated double helix coupling for easy installation.

EN42 Hollowshaft

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EN44 Hubshaft

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1 to 5,000 PPR 1024 or 2,048 PPR
Hollow Shaft Hubshaft Style Mount With 6 Mounting Holes on the Face
Bore Size Options: 5/8″, 3/4″, 7/8″, 1″, 15 mm, 16mm Bore Size Option: 16mm
Max Operating Speed 3,600 RPM Max Operating Speed 6,000 RPM
CE, ROHS, CSA, ATEX, IECEx CE, ROHS, CSA, ATEX, IECEx
50G Shock and 20G Vibration Tolerant 50G Shock and 20G Vibration Tolerant
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OPEN CCTV Systems for hazardous areas

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camera functionCamera Systems provides a complete camera portfolio for industrial process monitoring and security surveillance for hazardous and industrial areas. Due to our innovative SNF*-technology, all cameras are considerably lighter than any existing ones, and extremely robust. Almost all of our cameras are designed for operation in extreme temperatures ranging from -40°C to +75°C, even our infrared camera with day/night vision.

We are therefore able to design complete surveillance systems for any type of production plant, be it an oil rig, a tank farm, onboard ship or in process plants in the pharmaceutical or chemical industries. For control and standard monitoring, we have the ISview software package.

Larger surveillance systems with up to several hundred cameras are covered by the professional SeeTec software.

*(SNF – sensor-controlled nitrogen filling)