Where the need to control lighting, temperature or other functions according to daylight hours exists, Finder has developed an innovative, easily programmable time switch which employs a unique digital program to calculate sunrise and sunset times by simply entering the location’s postcode with a single joystick.
With ever increasing pressures to reduce energy consumption, Finder’s Astro 12.81 time switch will control lighting, heating/cooling and humidity equipment in commercial, residential and industrial applications wherever sunrise and sunset times are critical in determining operational times. The Astro’s micro-controller stores postcode data from 16 European countries, including the UK, allowing for a precise calculation of seasonal sunrise and sunset times through date and location coordinates. The Astro is also programmable using geographical coordinates, settable between 30°S and 64°N; 16°W and 50°E. The Astro will also automatically compensate, should European Summer Time be enabled.
For added flexibility, the output switching can be advanced or retarded about the calculated sunrise (or sunset) time in 10-minute increments—up to a maximum of 90 minutes. A manual override of the output status allows for maintenance or one-off events. With a 16A 250vac rated output contact and a 120A 5ms peak current rating, the Astro time switch is capable of directly switching 2000W halogen, 750W compensated fluorescent, 200W CFL or LED lamp loads and AC15 loads up to 750 VA.
The integral back-up battery, which is easily replaceable from the front, features an automatic power save mode which helps extend battery life.
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With increasing health and safety demands and the need to protect valuable equipment, Finder’s new 70 Series modular rail-mounted monitoring relays provide a solution by offering maximum flexibility in monitoring a range of electrical supply parameters, in compact, easy to adjust units. For example, machine safety legislation (IEC/EN/BS60204-1) requires that portable or semi-portable motor-driven equipment be prevented from starting up in the wrong direction should the local phases be reversed, and a phase reversal monitoring relay can provide for that.
Finder’s new relays are ideal for monitoring supplies to machinery, equipment, and installations where failure or variation outside acceptable limits may result in damage to equipment, danger to personnel, or disruption to critical processes or procedures. Featuring ‘positive safety logic,’ the 70 Series will ensure that any failure mode results in the output relay assuming its de-energized position. With a selectable fault memory (lock-out), safety is increased by preventing uncontrolled restarting of equipment.
With a wide range of adjustments to maximize application flexibility, the monitoring relays feature two or three colour LED indicators for immediate visual indication of supply status. The functions and values are programmable from the front face, simplifying set-up and adjustment.
Within the 70 Series range are units designed to monitor single and 3-phase supplies for under-voltage, over-voltage, voltage within set limits, and for neutral loss, phase loss, phase rotation and asymmetry. The four monitoring relays in the 70 Series range (three of which are multifunctional) offer a selection of voltage limits between 170 – 270 for single phase, and 300– 480 for three-phase supplies, a switch off delay time between 0.5 – 60 seconds, and 4 – 25% variation of phase asymmetry. The modules are available in 17.mm or 35mm, dependent on type.
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Finder’s popular low profile relay range has now been extended for use with AC supply voltages. The new 24VAC and 230VAC versions of the 41 Series are ideal where the use of a DC supply voltage proves unsuitable, or would incur additional cost.
Available in single and 2-pole contact versions, with rated switching currents of 8A and 16A, the 15.7mm high relay will find useful applications in electronics, control panels, machine and factory process control systems—particularly where space constraints place limits on height.
With a rated coil power of 0.9VA, the low consumption promotes energy saving, and the cadmium-free contact materials conform to current and future REACH and WEEE directives. It also features RTII environmental protection, making it flux-proof for automatic flow soldering.
The 41 Series low profile relay can be mounted directly onto the pcb, or into a pcb socket. It can also be used with a range of 35mm rail-mounted sockets, with screw or screwless terminals – all available with EMC suppression modules and with the option of a time-saving jumper link.
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When safety is paramount and required to conform to increasing amounts of new legislation, Finder’s 7S Series forcibly guided contact relays offer a competitively priced and compact solution for designers and engineers who require confirmation of the functional integrity of critical circuitry.
Class A forcibly guided contacts rated at 6A, 250VAC and conforming to EN50205 requirements, make the 7S Series suitable for many safety related applications.
The screwless terminals allow for quick, vibration-resistant connections, and the availability of 2, 4 and 6 pole versions makes the relays suitable for a wide range of uses in machine and plant control systems and energy generation, as well as water supply and treatment. Utilizing materials that comply with UNI 11170-3 for fire and smoke characteristics, and meeting the requirements of EN 61373 and EN50155 for mechanical and climatic characteristics also ensure they are suitable for railway applications.
With an operating voltage range spanning 0.7 to 1.25 of nominal, Finder’s new 7S Series tolerates a wide supply variation.
Standard gold-plated or notched crown contacts provide high reliability switching, with a minimum load rating of 60mW.
Meeting the requirements of EN 13849-1 for functional reliability in machines and plant engineering, the 7S Series relays are housed in compact 22.5mm rail mounting enclosures equipped with quick-connect cage clamp terminals and LED coil status indication.
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For installations needing duplicate equipment sets, for reasons of operational security or to meet peak loading demands, Finder has introduced a flexible multi-function priority change relay, providing convenient control of main and secondary systems. Suiting for example, pumping or refrigeration applications, the 72.42 relay has been designed to alternate the duty of two sets of equipment to ensure even wear over time.
The relay can be configured to alternate the output duty either on successive applications of the supply voltage or via an independent input control signal. The 72.42 relay also provides a second input enabling both outputs to be forced on in response to a peak demand or an alarm signal.
To minimise any switch-on current surge, the 72.42 relay incorporates an adjustable output delay timer, supporting for example the staggering of pump motor starts. In addition, where maintenance of either equipment set is needed, the relay will ensure that only the healthy equipment set is made available.
Available in 24V and 110V to 240V AC/DC versions, the 72.42 relay supports a wide supply range and with two independent NO output contacts rated at 12A, 250VAC, is capable of directly switching single phase motor loads up to 0.55kW. Output status is shown by dual LED indication.
Finder’s priority change relay is provided in a 35mm wide housing and is designed for 35mm rail mounting (EN60715). The relay terminals are screw type and the unit’s protection category is IP20.
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With a host of design features to improve both reliability and efficiency, the 78 Series of switched mode power supplies from Finder gives control system builders a stable and dependable low voltage DC supply. 91% efficient, and drawing only 0.4W in standby, this series of modular, rail mounted DC power supplies comprises 24VDC, 36W; 24VDC 60W and 12VDC, 50W output variants that support universal AC or DC supply ranges, respectively 100-265VAC and 140-370VDC.
Integrating the latest protection technologies, the 78 Series includes: thermal protection with fast output voltage shutdown; short circuit protection with ‘hiccup’ (auto-recovery) mode and overvoltage (varistor) protection. In addition, the power supplies’ high inrush current handling capability means they will safely tolerate loads with high current transient characteristics, such as capacitive circuits and solenoids fitted with ‘economy’ resistors.
To help minimise downtime in the event of a fault, the power supply inputs are protected by an easy access internal fuse, with an adjacent spare fuse ensuring an even more immediate fix. Able to be interconnected in either dual (bi-polar) or series configuration, multiple 78 Series power supply outputs can also be ORed using standard diodes to support both manual and automatic redundancy schemes, further augmenting control system reliability.
Measuring only 70mm wide and 60mm deep, these highly compact 35mm rail mounted power supplies can also help to reduce control panel size. Qualified to EN60950-1 and EN61204-3 normes, they are fully compliant with global EMC standards for power supply design.
Click on the Link Below to access Finder 78 Series Information
Finder 78 Series - Switch Mode Power Supplies
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Finder has announced the introduction of a pair of panel thermostats designed to maintain constant temperature levels in control panels and enclosures. Suiting the needs of both simple and sophisticated heating and ventilation systems, the 7T Series thermostats help to improve component reliability and preserve instrumentation accuracy through enhanced temperature setting and control.
With red or blue temperature setting dials to clearly identify the heating and ventilation variants, the 7T thermostats are IP20 rated and come in slim 17.5mm rail mounting housings, ensuring easy installation and usage in compact panel designs.
A temperature setting range of between 0 and 60ºC makes them suitable for a wide range of environments, while their snap action bi-metallic sensor means a positive switching action and a long electrical life (100,000 cycles). The thermostats’ output contact (normally closed for heating control, normally open for ventilation control) is rated at 250VAC, 10A, enabling them to directly switch heater or fan loads up to 2500VA AC1 and 250VA AC15.
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Finder has announced the introduction of a range of eight modular, 22.5mm wide rail-mounted timers designed to provide a complete range of timing functions, while keeping part number holdings to the absolute minimum. The multi-voltage 83 Series of multi-function and mono-function timers handles 14 different timing functions, with time scales between 0.05 seconds to 10 days and offers either single or double pole variants.
To maximise flexibility the timers support a very wide working voltage range, from 24V through to 240V AC or DC, making them suitable for mains or low voltage AC operation as well as DC battery supplies. With changeover contacts rated for 16A, the 83 Series is capable of switching AC1 loads of up to 4KVA or single phase motors up to 0.5kW. For easy maintenance, both flat blade and cross head screw drivers can be used to adjust the range and function selectors, the timing trimmer and to disengage the rail mounting clip.
The single pole 83.01 and double pole 83.02 multi-function timer variants both offer up to 8 different timing functions, including a special watchdog function allowing users to monitor repeating processes by resetting the time period each time a “watchdog” pulse is received, with the continuous presence or absence of a pulse beyond the set time triggering the release of the output contacts.
The 83.02 timer also provides the facility of external potentiometer time setting, enabling the timer to be adjusted from the front of control panel or enclosure, whilst assuring the security of timer function and time scale settings. In addition, to further maximise flexibility and minimise part number stocking, it also offers users the option to select between either 2 timed or 1 timed and 1 instantaneous contact.
The third multi-function timer in the series, the 83.91 provides 4 asymmetrical flasher timing functions: starting pulse on; starting pulse off; as well as starting pulse on and starting pulse off both with a control signal input allowing timing to be initiated from a remote sensor operating at a voltage other than the supply voltage.
Completing the 83 Series timer range are 3 single pole mono-function timers: the 83.11 for on-delay; the 83.21 for interval; 83.41 for off-delay with control signal; and a pair of 2 pole mono-function timers: the 83.62 for power-off delay (true off-delay) and the 83.82 for star-delta timing function.
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Finder has introduced a new family of ultra-slim relay interface modules that provides a low-cost, space-saving solution for a host of industrial applications. The 39 Series MasterINTERFACE range incorporates an innovative, replaceable fuse for output circuit protection, plus busbars and terminals that substantially simplify input and output wiring.
Housed in a compact 6.2mm wide package, the 39 Series offers integral coil protection circuitry across the gamut, as well as a secure retention and ejection clip, and terminal screws suitable for blade and crosshead screwdrivers. Five dedicated module types are offered, designed to meet the specific requirements for basic, enhanced, input, output and timer interface functions.
Available with electromechanical or solid state relays for general interfacing applications, the MasterBASIC features common link supply terminal positions, allowing the use of a 16-way jumper link. The enhanced MasterPLUS module adds the option of a quick connection replaceable output fuse and special leakage current suppression versions to mitigate any detrimental effects caused by residual current in the input circuit. Both the MasterINPUT and MasterOUTPUT incorporate additional busbar jumper links and terminals necessary for the full connection of 2- or 3-wire input devices and output devices respectively, thus reducing component cost, time and panel space. The MasterTIMER is a multi-function and multi-range device with DIP-switch selection of 4 time scales and 8 functions, with timer delay adjustment achieved via an easy-to-access rotary knob on the top surface of the module.
A range of accessories is available to support the 39 Series relay interface modules, including red, blue and black 16-way jumper links, and dual purpose separators (1.8mm or 6.2mm) for the visual or protective separation of groups of interfaces operating from different supply voltages, or for the protection of cut ends of jumper links. The MasterADAPTER permits the easy connection of A1/A2 terminals of up to 8 MasterINTERFACE modules to PLC outputs via a 14-way ribbon cable, plus simple 2-wire power supply connection, providing significant wiring savings.
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Two separate catalogues now available for: Industrial Applications; Commercial and Residential Applications
Finder has announced the availability of two new catalogues for 2011/12 detailing the company’s complete product range. The catalogues, one aimed at Industrial applications and the other targeting Commercial and Residential applications, contain essential reference information on timers, relays, interface modules, sockets and accessories for designers and buyers of electronic and electrical systems.
The 360-page Industrial Catalogue includes new series of interface relays, solid state relays, surge protection devices, panel thermostats and timers. This latest edition is divided into 3 product sections: plug-in / PCB relays; relay / interface modules; timers and monitoring relays. There are comprehensive specifications and ordering data for all products. For relays this includes coils, contacts, insulation and life figures, performance graphs, connection and dimensional diagrams. For timers and monitoring devices the catalogue features full illustrations and explanatory timing charts, switch settings, display and LED indication, along with application notes and guidance. To simplify ordering, all related socket and accessory information immediately follows the main product data.
In addition, an extensive general technical information section provides background on reference standards, terminology and definitions. This section has been expanded to include data on contact load classifications, UL approval file numbers and contact material characteristics.
The 78-page Commercial and Residential edition specifically focuses on energy saving lighting control, movement detection, time switch and temperature control products and features new items such as modular contactors, dimmers and room thermostats. Full technical and ordering data is provided together with performance and setting illustrations.
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© E. Preston (Electrical) Ltd 2024.
UK distributor of electrical and electronic components.