A New Species

The new Variable speed starter (VSS) from Eaton offers alternatives for drive engineering

The increasing automation of machines and the increasing legal requirements with regard to energy efficiency have resulted in a significant rise in the demand for variable frequency drives. At the same time the motor starter has established a strong position on the market. In order to bridge the gap between the two, Eaton is now offering a new device class: the Variable speed starter (VSS).

Electrical speed control using variable frequency drives continues to gain importance. The Motor Regulation EC 640/2009 of the European Union is a driving force here, stipulating the mandatory use of IE3 motors directly on the grid or likewise the use of IE2 motors with variable speed drives from 2015. This means that there is an increasing move away from the motor starter towards the variable frequency drive, particularly with simple applications.

Benefits of the motor starter and variable frequency drive combined

There is clearly a gap between these two most widely used methods of controlling electric motors. One the one hand, there is the motor starter with its easy handling and high level of reliability and yet limited functionality. On the other hand, the variable frequency drive provides the required variable motor speed and a wide range of functions, but involves a greater degree of complexity. The move towards the variable frequency drive therefore presents many users with some challenges since it is a highly complex device and normally requires a comprehensive knowledge of drive engineering.

As a pioneer and one of the leading specialists for all aspects of switching, protecting and driving motors, Eaton has developed a new device class that combines the benefits of the motor starter with those of the variable frequency drive. The so-called Variable speed starter (VSS) can be handled as easily as a motor starter but offers the possibility of variable speed control at the same time.

Simplicity at first glance…

Eaton is launching the new device class under the product name PowerXL-DE1, first of all in two sizes. The slim-line FS1 version with a width of only 45 mm is ideal for controlling motors up to 1.5 kW, while the FS2, double the width at 90 mm, is designed for ratings from 2.2 to 7.5 kW. At first glance, these devices are the embodiment of simplicity.

Their attractiveness lies in the fact that there are no buttons and operating elements. This makes a simple “out-of-the-box” installation possible, i.e. the installer just has to take the device out of the box, wire it up like a motor starter, and it is already operational. The fact that the DE1 requires no parameter setting means that the probability of installation errors is kept to a minimum and therefore also the time required up to commissioning. Three LEDs indicate the status and operating mode of the unit at a glance. The table provided directly on the device gives a clear explanation of the color coding and flash frequency.

...impressive trip free design at second

Besides simple handling, Eaton has also integrated the aspect of reliability into the new device class. The trip free design of the Variable speed starter (VSS) ensures maximum availability. This concept comprises the ability of the DE1 devices to detect the regenerative energy feedback from the motor and to thus lengthen the ramp automatically. It also includes a DC braking function and the function of automatically reducing the switching frequency to prevent the device temperature from being exceeded. However, in the event that a fault causes the device to switch off, the automatic restart function makes it possible to ensure continuous motor operation. This means that the manual reset of the fault is no longer necessary providing that safety is not impaired.

The benefits of the trip free design are easily demonstrated in practical applications. Imbalance can be a genuine problem in many applications where centrifugal forces are present (e.g. industrial washing machines). On the one hand the motor must accelerate the load, whilst on the other hand, the imbalance mechanically accelerates the motor so that it runs faster than set by the variable frequency drive. This results in regenerative energy feedback into the DC link circuit. Normally the energy must be discharged via a braking resistor. The DE1 offers a refined alternative: An internal algorithm ensures that this does not increase the DC link voltage to impermissible values and thus initiate a shutdown – and all that without the use of a braking resistor.

Fans are another area of application. The air flow in a pipe system can mean that fans often rotate when the driving motor is not switched on. If a speed controller is then required to switch the motor that is already rotating, the controller may be switched off in certain circumstances on account of overcurrent. With these kinds of applications, the DE1 Variable speed starter (VSS) is able to brake the motor with DC current before the motor actually starts in order to prevent the unwanted shutdown. The device therefore ensures fault-free operation even here.

A large market gap

The variable speed starters are factory fitted with internal EMC filters so that they are suitable for use in industrial networks as well as in public utility grids (category C1, C2, C3) without the need for other external EMC filters.

With this unique performance profile and its design for ambient temperatures from -10 to 50 °C (60°C with derating) the Variable speed starter (VSS) meets the demands of several applications on the market for which there was previously no ideal solution. This includes, for instance, applications for which a DOL starter and star-delta starter combination or a soft starter cannot be used since the motor draws a large starting current but does not permit a reduced starting torque. This also applies to materials handling applications, when machines or crushers have to be started up at once under full load after a stop. Even for many simple applications, such as in the field of transport technology, regular variable frequency drives are often overdimensioned, i.e. too elaborate, too expensive and complex.

Many machine builders, who are required to move media such as air or liquids, are now challenged by the requirement of the ErP Directive to design a new drive concept for fans and pumps in order to achieve the prescribed minimum efficiency values. If they have previously used a motor starter and controlled the flow rate mechanically or hydraulically, such as with throttle valves, they are now faced with the challenge of switching to a power-dependent control through the possibility of variable speed adjustment.

The variable speed starter is also ideal for applications requiring a fixed speed that cannot be implemented with the mains frequency. This is often the case in the wood industry where motors are run at high speeds (e.g. 18,000 rpm). The DE1 also offers an alternative where a constant speed is required, but where an IE3 motor cannot be used due to the different mechanical dimensions compared to IE2 motors.

Operation options: Screwdriver to remote keypad

The variable speed starter also offer considerably more options than is seen at first and second glance. A pluggable and universal configuration module, the DX-EXT-SET, enables the operator to change the most important parameters from the factory setting with a screwdriver – without the need for a keypad, software or manual. This means that ramp times, motor protection, mains frequency and terminal configuration can be set ergonomically. Once the parameters have been set via the operating elements on the front, the configuration module can “mechanically store” this parameter set, which can then be transferred directly to other variable speed starters – simply by plugging onto the DE1 device and pressing the Set button. This function simplifies and speeds up commissioning in series production or when replacing a device in the event of a fault.

Eaton also offers users external keypads with LED or OLED displays, already known from the PowerXL series, for an alternative method of parameterizing and operating the DE1, as well as a Bluetooth communication stick for the simple copying of parameters from one device to others. Like all devices of the PowerXL series, the DE1 is also compatible with Eaton's drivesConnect software. This software and the keypads enable up to 63 devices (DE1, DC1, DA1) to be combined in a drive network and now operate and parameterize them centrally as stations of the network. The DE1 comes with a Modbus interface as standard and can also be integrated directly in Eaton's innovative SmartWire-DT communication system.

The new PowerXL-DE1 Variable speed starters (VSS) that comply with the international CE, UL, cUL and cTick requirements thus provide machine and system builders with a cost-effective and at the same time highly reliable alternative for worldwide use in order to make applications with a previously constant speed more energy efficient and in compliance with the increasing international legal requirements.

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Eaton is adding 14 new models to its successful line of PSG power supplies. The line extension includes 12 Vdc output models, redundancy and buffer modules, and more to provide efficient control power and increase system reliability. The line extension meets the needs of various applications and features.

Benefits:
• 12 Vdc output
• NEC Class 2 rated model
• Redundancy modules
• Buffer module
• IP20 finger-safe terminals
• 3-year standard warranty

Market Segments:
• Mining and metals
• Oil and gas
• Municipal water / Wastewater
• Other industrials and processing

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1658 - 1659 - 1681
Schurter IEC Cord Connectors C21 and Appliance Inlet C22
For Very Hot Conditions 155°C
IEC 16 A / UL/CSA 20 A

Schurter introduces its high temperature inlet and cord connectors series to extend its range of IEC high-temperature power inlets and outlets according to IEC. The high-temperature appliance inlets and cord connectors are designed according to IEC for 16 A at 250 VAC, and according to UL / CSA for 20 A at 250 VAC.

Pin temperature may reach a maximum of 155°C. Furthermore, the appliance inlets and cord connectors meet the requirements of IEC 60335-1 for household appliances, which covers enhanced requirements of glow wire tests for unattended household appliances according to IEC 60695-2-12 and -13. They have certifications from ENEC, UL/ CSA and CCC.

The high-temperature appliance inlet, series 1681, offers types for snap-in or screw-on mounting. The inlet can be specified with terminals for solder, quick-connect or screw connections. The cord connector comes in a straight, series 1658, and an angled, series 1659, design. Cables with a conductor cross-section of up to 2.5 mm2 or 10 AWG can be used.

The IEC high-temperature appliance inlet and the cord connectors are RoHS and CHINA-RoHS compliant. They are used in equipment that operates in elevated ambient temperatures and/or with high currents, such as datacom equipment, where increased power and decreased size are trending, as well as portable industrial equipment such as heating systems.

Applications
• Power Supplies
• IT / Telecom equipment
• Server / Data Storage
• Furnaces, Heating Equipment, Ovens
• Lighting systems

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Honeywell is pleased to announce its new Basic Board Mount Pressure Sensors, Compensated, Unamplified TBP Series. These new sensors are designed for customers who require a simple, high quality, cost-effective, basic performance, mV output device. They are compensated and unamplified, ideal for customers who want a temperature-compensated sensor with the maximum possible resolution.

FEATURES  &  BENEFITS
• Wide pressure range: 60 mbar to 10 bar; 6 kPa to MPa; 1 psi to 150 psi
• Small: 7 x 7 mm [0.276 x 0.276 in] is very small when compared to most board mount pressure sensors, occupying less space on the PCB and typically simplifying placement
• Wide compensated temperature range: 0 °C to 85 °C [32 °F to 185 °F]
• Media compatibility: 
• Non-silicone-gel coating: The input port is limited to non-corrosive, non-ionic media such as dry air and gases and should not be exposed to condensation
• Silicone gel coating: Uses the same materials in the wetted media path but is protected from condensation by a silicone-based gel coating

• Various package styles:
DIP (Dual Inline Pin)
Leadless SMT (Surface Mount Technology)
SMT

• Various pressure ports: 
DIP: Single axial barbed port and low-profile port
Leadless SMT: Single axial barbed port and low-profile port
SMT: Single axial barbed port and low-profile port

• Supports Lean manufacturing
J-STD-020-D MSL 1 unlimited shelf life after packaging is opened
System can be calibrated within one hour after reflow solder
Compatible with modern lead-free and no-clean solder processes

• ISO 9001 compliance

POTENTIAL  APPLICATIONS
Medical
• Hospital beds
• Oxygen concentrators
• Wound therapy
• Blood pressure monitoring

Industrial
• HVAC transmitters
• Air movement control
• Environmental control
• Leak detection
• Industrial controls
• Pneumatic controls
• Other commercial applications

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Schurter is expanding its range of surface mount fuses with the introduction of the UMK 250 series. The quick-acting characteristic of this fuse is in accordance with IEC 60127-4, providing the logical addition to the existing UMZ 250 time-lag series. The UMK 250 provides primary and secondary overcurrent and short-circuit protection.

Schurter offers the UMK 250 in ten rated currents from 500 mA to 4 A. The fuse and clip combination is designed for easy fuse replacement. Rated for the protection of primary and secondary PCB circuits, the UMK 250 is designed for applications including power supplies, medical equipment, lighting and devices for home and industrial use.

This series is RoHS compliant and compatible with lead-free soldering processes. The UMK 250 fuseholder is an ideal substitute for similar SMD fuses, where the fuse clips are not offered. The compatability of the solder pads allows the SCHURTER product to be used in cases where the ability to replace the fuse is desired. The installed fuse-link UMF 250 is considered an Universal Modular Fuse (UMF) and carries VDE and cURus approvals. This ultra-small fuse
including clip is 11.3 x 4.2 x 4.0 mm with a breaking capacity between 100 – 200 A at 250 VAC /
125 VDC.

Technical features:
- Rated Current range: 500 mA to 4 A
- Rated voltage: 250 VAC and 125 VDC, according to IEC
- Breaking capacity: 100 – 200 A @ 250 VAC / 125 VDC
- Characterisitc: Quick-Acting F, according to IEC 60127-4
- Component size including Clip: 11.3 x 4.2 x 4.0 mm

Applications:
- Primary and secondary overcurrent protection
- Lighting
- Medical appliances
- Industrial electronics

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Schurter is pleased to announce, that its compact KFA and DA22 Series power entry modules, with 1- or 2-pole fuseholder and filters, now mates with V-Lock cord sets. The KFA’s and DA22’s new V-Lock compatible feature prevents unintended disconnection of the power from the equipment.

Unlike wire bail or clamp accessories, no additional costly hardware is necessary to install the cord retaining system. The cordset safely latches into a notch in the plastic housing of the KFA and DA22. Removing the cordset is easily achieved by depressing the latch. V-Lock power cords are offered in a wide range of cord lengths and country-specific plugs, including NEMA 5-15 standard hospital grade versions.

The KFA and DA22 are ideal for use in medical devices, IT and audio equipment used on stage, where the power to the equipment must withstand mechanical stress on the cord. It features C14 inlet, 1- or 2-pole fuseholder for 5x20mm fuses, mains filter, 4.8 x 0.8mm quick-connect or PCB terminals, and screw-on or snap-in mounting. Optional voltage selector allows for use in international markets. Current rating 1 to 10 A at 250 VAC.

Approvals include UL, CSA, VDE and CCC.

Features and benefits:
- Power entry module with 3 functions: Appliance Inlet, Fuseholder and Line filter
- Suitable for use in medical equipment according to IEC/UL 60601-1
- Optional fuse drawer "extra-safe" according to IEC/UL 60601-1
- V-Lock retaining system for mating cordsets
- No additional components required for cord retentionFeatures and benefits:
- Power entry module with 3 functions: Appliance Inlet, Fuseholder and Line filter
- Suitable for use in medical equipment according to IEC/UL 60601-1
- Optional fuse drawer "extra-safe" according to IEC/UL 60601-1
- V-Lock retaining system for mating cordsets
- No additional components required for cord retention

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Hylec-APL launches its new DEBOX junction box. The virtually tool-less design facilitates installation faster than the leading competitor and offers greater flexibility. For use in internal applications in a variety of different industries, but especially in the lighting sector, it will reduce time on-site and in turn reduce the overall costs of installation.

The DEBOX features:
•   4 Pole, 24 amp, 4mm terminal block supplied as standard.
•   Can be used with screwless terminals, Kwik-Wire commoning terminals or IDC connectors
•   Can accommodate flat or round profile cables
•   Polypropylene UL 94 V2 material
•   Fixing pin clips the lid in place quickly and effectively
•   Two mounting ears for secure external fastening
•   Virtually tool-less assembly

Enquiry Form: https://www.epreston.co.uk/contact/

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Crouzet DCmind Brush Motors - Product of the Year 2013

March 2014, the 40,000 technical and scientific readers of the American magazine Medical Design Briefs voted the DCmind Brush range of DC motors Product of the Year 2013. DCMind  Brush motors were selected for their outstanding technical merit and practical value.

DCmind Brush motors are incredibly quiet, even at full load, offer excellent efficiency and an exceptional service life, and have an extensive range of gearboxes and accessories. The low noise level (35 dB) of DCmind Brush motors makes them particularly suitable for the medical and biopharmaceutical sectors, as well as laboratories, industry and office equipment and systems. They can also be used in many other high performance applications such as pumps and valves, and also in the railway, military and aeronautical fields.

“The new DCmind Brush motor generation adds a uniquely differentiated premium product to our current offering”, says John Morehead, Crouzet Motors US National Sales Manager. “With its remarkably quiet operation, quality design and manufacturing, it greatly expands our application reach. Additionally, Crouzet’s eco-design strategy has cut the environmental impact of the product’s overall life cycle in half while at the same time improving the product’s
energy efficiencies.”

It is this extraordinary performance that won over the readers of Medical Design Briefs and made DCmind Brush the Product of the Year 2013.

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The PSE HI (high impact) switches can now be delivered with raised symbols, letters and numbers in addition to various colors, or legend inscriptions. The switch surface is made of anodized aluminium, which can be pre-formed with raised symbols to provide long-term wear and excellent user haptics.

The aluminium surface of the PSE HI switches can be produced in various anodized colors. A variety of standard legends and/or raised symbols are offered to indicate function. The laser etched legends or pre-formed raised symbols provide long-term protection against wear. Raised symbols can be numbers, as well as characters from the Braille alphabet. These flexible design options make it possible to offer a wide variety of standard or custom options to meet individual design requirements.

The PSE HI piezo switches have an ingress protection class rating of IP67. The hermetic seal makes the switches ideal for use in areas that must be regularly cleaned or disinfected. Additionally, the switches offer a robust metal housing, well suited for use in harsh environments where there exists the potential for vandalism. The impact resistance according to DIN EN 50102 is IK06.

The PSE HI piezo switch is rated 0.1A @ 42 VAC/60 VDC. The piezo switching element offers an exceptionally long service life of more than 20 million switching cycles. Typical applications requiring such robust switch performance include pedestrian crossing walks, elevators, truck lifts, material-handling equipment, safety equipment, ticketing terminals, gas stations, food service equipment and processing plants.

Technical Data:
- PSE HI piezo switch 0.1A 42VAC/60VDC
- Standard symbols, custom symbols, laser-etched, raised shapes, various colors
- Service life at rated switching capacity > 20 million switching cycles
- Protection class IK06 (DIN EN 50102), IP67 (DIN 60529)

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Hylec-APL’s IP65 door enclosures are designed to simplify installation and guarantee years of trouble free operation. Unlike many competitor products on the market which charge extra for accessories, the Hylec-APL range is supplied with a galvanised steel back plate, external mounting brackets and a lock and key as standard.

• IP65 protection on all models
• Hinged doors in blank or transparent design
• Quarter turn lock and key supplied as standard
• Flame retardant ABS provides impact resistance of IK08
• Galvanised steel backplate provides easy mounting
• Supplied complete with external mounting brackets and assembly screws

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