Finder introduces the 72.31 three-phase monitoring relay, which is used for detecting a loss of phase or incorrect phase rotation when using three-phase supplies. This compact relay is ideally suited for the protection of motors in plant and machinery, and helps to satisfy the mandatory requirement of ensuring the correct rotation of motors in transportable equipment.

The 72.31 allows OEMs, panel builders and installers of control systems to ensure that motors do not become permanently damaged due to phase loss, and also to avoid potential hazards or damage due to incorrect rotation of the motors. The relay features positive safety logic, which triggers the contact to open if an error is detected so that the system will fail to a safe condition. The wide supply voltage specification allows a single unit to be used across the full three-phase supply voltage range of 208V to 480V AC.

The relay provides reliable monitoring of phase loss, even under conditions where the lost phase may be “regenerated” by the action of the rotating motor. This phenomenon is not uncommon, and many monitoring relay units that are currently available may falsely detect this phase regeneration and thus fail to disconnect the supply, which can cause damage to the motor. The 72.31 can discriminate phase regeneration up to 80% of the line voltage.

Featuring a SPDT output contact rated at 6A (maximum peak 15A), the 72.31 monitoring relay is enclosed in a compact housing measuring 84mm high x 56.5mm deep x 17.5mm wide. The narrow profile offers considerable saving in panel space.

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The 2006 Finder Product Profile is a 24-page colour brochure that provides outline information on the company’s comprehensive range of relays, monitoring relays, timers and movement detectors.

The range includes miniature and low-profile PCB relays, industrial relays, general purpose relays, power relays, relay interface modules and sockets. Also featured in the brochure is a range of monitoring relays and timer modules. A series of products designed for intelligent lighting applications comprises light-dependent and step relays, dimmers and time switches rated at up to 16A, as well as PIR movement detectors, all of which are suitable for use with either incandescent or fluorescent lighting installations.

The Product Profile provides all the primary electrical, environmental and mechanical specification parameters for each family of products, along with a colour photograph and a list of the relevant standards and approvals for each product Series.

Products that are new to the 2006 edition of the Product Profile include the 46 Series industry-standard miniature industrial relays, the 66 Series 30A power relays and the 38 Series two-pole relay interface modules.

Finder’s products are all manufactured in Europe, to the highest standards of quality and reliability, at the company’s state-of-the-art production facility near Turin, Italy.

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The 18 Series of PIR movement detectors from Finder has been extended to include a new model that operates outdoors in addition to the existing indoor model. The units detect body heat to control lighting in a range of applications, including energy saving and security.

The detectors can reduce energy consumption by automatically switching off lighting when it is not required. This addresses the increasing pressure on companies from both governments and environmental groups to reduce energy consumption, which means that areas of unnecessary lighting have come under scrutiny.  In parallel to this, there is a need for improved lighting particularly in exterior areas to deter potential intruders.

Finder’s PIR detectors are targeted at designers, engineers, contractors and installers of lighting control systems in commercial, industrial and domestic premises.  They will be of particular use in areas inside and outside buildings that are not permanently occupied, such as offices, washrooms, corridors, stairwells and stores as well as outside loading bays, access ramps, etc. where constant lighting is not required.

The output contact for both the 18.01 interior model and the 18.11 exterior model is rated at 10A, with a 20A peak current capability, suitable for switching a 230V incandescent or halogen lighting load of up to 1kW or a compensated fluorescent lighting load rated at up to 350W.

The coverage area spans 110° in both the vertical and the horizontal plane, and the sensing range is specified up to 8m. An integral adjustable threshold light sensor ensures that energy is not wasted by preventing the lights from being switched on in conditions of high ambient light.

To avoid accidentally switching off lights when personnel are still in the lighting zone, the Series 18 PIR units feature an extended ‘on time’. This enables the length of time the lights remain on after movement detection ceases to be extended by a preset delay time, which can be adjusted to between 10 and 180 seconds.

The versatile design of both Series 18 PIR models features a ball joint construction that enables simple, trouble free mounting on a flat vertical or horizontal surface, with the ability to angle the detection head to adjust the required detection area by up to 180° in the horizontal plane, and 27° in the vertical plane.

The 18.01 model allows concealed cable entry via the mounting bracket, while the IP54 protected 18.11 exterior model features a PG9 cable gland entry in the base. The electrical contacts are lead-free AgSnO2.

The Series 18 PIR range is entirely designed and manufactured in-house at Finder’s European facility near Turin in Italy. The design includes custom embedded system programming, CAD evolved optics, custom designed electronics, tooling and test equipment.  The units are competitively priced and offer specifiers and end users a European designed and built PIR with unparalleled flexibility, in a neat and compact housing.

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The 7E Series single phase kWh totalising meters from Finder have been designed for the measurement, recording and display of individual energy consumption for loads drawing up to a maximum of 65A.

The meters are targeted at applications in residential, commercial and industrial  installations where the consumption of energy needs to be measured or monitored.  This might be either to assist in meeting government targets for reduced emissions by minimising energy consumption, or to allow metering of locally billed electricity supplies. Typical areas of use might include test laboratories, the individual monitoring of machines, control cabinets and switchboards, in battery charging equipment, or for hook-up supplies to campers, caravans and boats.

The meters can be DIN rail mounted, and can easily be installed in a standard consumer unit. A high resolution pulsed open-collector output allows accurate remote monitoring.

The two models in the series, the 7E.13 and 7E.16, are rated for maximum current levels of 32A and 65A respectively, for a supply voltage of 230V AC at 50Hz. The display counter features a 4mm high, 7-digit display with a red decimal digit, giving a maximum totalising count of 999,999.9kWh. Both models have a maximum resolution of 100Wh, and their accuracy is specified as Class 1 (±1%). Rated power is 8VA and the AC operating range is 0.8 – 1.15 of nominal voltage.

The meters are housed in compact industry-standard packages with simple direct wiring connections. They are PTB approved in accordance with EN 61036, and carry CE type approval for EMC.

Model 7E.13 is a single unit width (17.5mm) with the digits arranged vertically, while 7E.16 is double unit width (35mm) and has a horizontal digital display. Both models feature a flashing red LED as a quick visual indication of operational status.

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The Finder 86 series miniature plug-in time delay modules can be used with a wide range of Finder rail-mounted relay socket combinations including the latest 46 Series Industrial Relays. The timer modules in the 86 series are among the smallest and most versatile currently available.

The modules offer the ability to introduce a time delay to the operation of relays, and are ideally suited for use with control circuits that require a delayed relay response in order to ensure the correct functioning of logic or sequence. The timer modules can either be fitted during panel assembly or retrofitted without any need for re-wiring or for the introduction of components requiring additional panel space.

The time delay modules are compatible with sockets having both screw and screwless connection formats, and can be used with relays from Finder’s 40, 44, 46, 55, 60 and 62 series, therefore providing the facility for multiple delayed contact combinations from 1 CO to 4 CO with switched current ratings from 7A to 16A at 250V AC or 30VDC.

ON delay and ON pulse functions, four time delay ranges spanning 1.5s to 64 min and a 12 - 24V AC or DC operating voltage mean that fewer models need to be held in stock to cover the whole range of available specifications.

By ensuring that all future introductions of relay socket combinations offer full compatibility with the 86 series, Finder guarantees the user continued maximum flexibility of operation for the widest variety of applications.

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New from Finder is a range of 35mm rail mounting sockets featuring screwless terminations. Designed for use with Finder’s 34, 40, 41, 44 and 55 series plug-in relays and 85 series timers, the sockets can be used in any application where power and control wiring is terminated. The sockets will allow panel builders, machine builders, system integrators, OEMs and installers to make a reliable and vibration-resistant connection to the relay or timer in the shortest possible time.

Conventional screw terminals must be tightened to a specified torque during assembly: this process is time-consuming, and it is difficult to ensure that it has been performed correctly. As a consequence, screw connections can work loose under high levels of vibration, either in operation or when being transported. Screwless connections are achieved by means of two metallic blades that are both under tension, which will always force a strong closing action on the wire.

The sockets are all suitable for 35mm rail (EN 50022) mounting and, depending upon type, may also be suitable for panel mounting. The sockets offer the same features and performance as their screw terminal equivalents, allowing the designer the choice of a screwless termination without compromising on other parameters.   Many of the sockets accept Finder’s range of coil indication, EMC suppression and timer modules, and all feature plastic retaining and release clips .

The wide range of relay socket styles that are now available in the screwless format means that the benefits of reduced wiring time and termination reliability can be offered across a large selection of Finder’s relay types and ratings.

These sockets are the result of Finder’s total in-house capability for product design and expertise in advanced manufacturing technology; encompassing the design and manufacture of all precision mould and press tools, automated assembly machinery and test equipment.

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New from Finder is the 46 Series miniature industrial relay range. The 46 Series has evolved from the successful PCB mount 40 Series, and provides both single-pole and two-pole contact configurations for use in control panels and systems. The key characteristic of this new range is its full terminal compatibility with a widely used but single sourced de-facto industry standard. The Faston spade/blade terminals provide secure and reliable connections between the relay and the associated 97 Series socket, over and above that achieved by its predecessor.

Says Finder’s Sales Manager Ted Waller, “This type of relay with spade terminals has been primarily single-sourced until now. The introduction of the 46 Series provides the customer with a real choice, offering a higher current rating than the competing product, and a unique range of optional plug-in modules for greater functionality that is not available elsewhere”

The 46 Series relays are available with either AC or DC coils, and benefit from a host of advanced features and options, including a mechanical flag indicator and manual test button that can be used in momentary or latching mode - useful during commissioning, fault tracing and override situations.  A version with LED indication is also available.

The 46.52 relay has a two-pole changeover (DPDT) configuration and a maximum rated current of 8A, while the single-pole changeover (SPDT) 46.61 model is rated at 16A maximum.

The associated 97 Series rail mounted sockets feature a flip-out retaining and release clip for easy removal of the relay. Uniquely these sockets accept an extensive range of time-delay, coil indication and EMC suppression modules and an 8-way jumper link that reduces the time taken to wire common connections.

As an alternative to using the rail mounting socket the relay can be secured by an optional flange-mount bracket allowing direct mating with Faston connectors.

The terminal arrangement and pitch of the 46 Series are fully compliant with existing relays of this type, and the new relays can be used as a drop-in replacement for industry standard products.

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