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ZF’s D4 Switch Offers Reliable Solution For Today’s Appliances

ZF Friedrichshafen AG’s D4 miniature snap action switch has been an industry standard for many years. Originally this style of switch became popular with appliance manufacturers, due to its small size and excellent current carrying capabilities.

The D4 series benefits from an increased tracking resistance of PTI 300, a high functional reliability, and excellent switching precision. Using application-specific contact materials for switching currents from 0.1A up to 21A at 250VAC, the switches offer superior contact reliability. Due to several available actuators and mounting points, the devices will prove suitable for many different applications.

ZF are pleased to confirm approval has recently been received for the NCKL2/8 UL certificate which applies to the D4 range. They are now certified as ignition protected against new refrigerants which are being used within domestic white goods including refrigerators, ice machines, heat pumps and air conditioning units.

 

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Schurter UMT-W Super Time-Lag SMD Ceramic Fuse

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Super Time-Lag SMD ceramic fuse with selective tripping characteristic

• Suitable as a Fail Safe Device
• Very high melting integral
• Precisely defined melting times (min/max)
• Compact construction

With the UMT-W, Schurter launches a pulse-proof SMD ceramic fuse with super time-lag tripping characteristics, which is particularly suitable as a fail-safe device in demanding applications.

The cuboid shaped (5.3 x 16 mm), extremely compact SMD fuse is available in five rated currents from 5 A to 20 A and reaches rated voltages of up to 125 V AC&DC with a breaking capacity of up to 1000 A. All these you get with a super slow and precisely defined melting characteristic unique for SMD fuses.

Applications
The Schurter UMT-W is recommended wherever high inrush currents flow (e.g. motor control systems). The UMT-W is particularly suitable for applications with long cables (e.g. avionics), which are often primarily protected by an electronic fuse. If this monitoring fails, or does not perform its task correctly, the UMT-W takes over as a fail-safe device and transfers the system to a safe, currentless state. Due to the precise melting times with its precisely defined min/max corridor at 4xIn, robust and selective safety concepts can be implemented on top of the electronic fuse.

COTS+ The UMT-W fuse is a “COTS+” product. The “+” comes from extended fuse qualification tests (e.g. AEC-Q200) and highly controlled manufacturing processes, which are available to all SCHURTER customers. For higher reliability requirements, we also offer visual inspection according to MIL-PRF 55342, different types of up-screenings (burn-in) and detailed test reports on request.

 

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Schurter C20F Appliance Inlet with Filter

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• Variants with ground choke
• Highly resistant – fully potted
• Interrupts ground loops
• V-Lock cord retention

Schurter extends its successful power entry module series C20F with versions including a ground line choke, designed for suppressing high-frequency interference on the ground conductor. Additionally, the new variants have a bigger X-capacitor for better symmetrical attenuation.

The C20F filter series combines an IEC C20 appliance inlet with a high-quality mains filter. The particularly wide metal flange makes contact with the housing surface over a large area, thus enabling optimum filtering and shielding.

 

Ground Choke
New variants of the C20F appliance inlet filters are equipped with a ground choke. The line filters have a second choke on the earth conductor in addition to the current-compensated choke on the pole and neutral conductor. The ground choke is located between the device plug and the filter output. Placing it directly at the mains input ensures that possible high-frequency interference currents on the earth conductor cannot bypass the filter via the housing. Medical filters in particular (no Y-capacitors) benefit from improved asymmetrical attenuation in the higher frequency range due to the ground choke.

Applications
The C20F filter series is available as standard or medical version and is used in devices that require a particularly high noise immunity. These include IT or telecom systems according to IEC 92368-1 and medical devices according to IEC 60601-1. The series is compatible with V-Lock device connection cables.

The C20F series is certified for currents up to 16 A / 250 VAC according to IEC standard and 20 A according to UL/CSA standard at 125/250 VAC. It provides ENEC, CQC and cURus approvals.

 

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ZF Energy Harvesting Switch Solutions Technology

Self-Sufficient RF Transmission of Switch Signals Without Battery and Wires.

Energy Harvesting Switch Solutions Technology is an energy harvesting switch which reacts to its environment without a need for energy. This solution developed by ZF is based on the principle of Energy Harvesting and does not require any wires. Energy Harvesting can be described as an ‘operation without any auxiliary energy’. Instead of generating auxiliary energy through an integrated energy source or adding it via an external energy supply, energy that is available in the surrounding environment or that is acting on the system is converted. Therefore an Energy Harvester generally speaking is an energy converter.

The wireless RF switch system from ZF based on an energy harvester transforms the mechanical input energy of the actuation into electrical energy, which then transmits, for example, a switching signal to a wireless receiver via RF electronics. The advantages of the system are that the switch can be placed anywhere without the need for any wires. Over its whole life cycle it will fulfill its function completely maintenance free and without any need to replace a battery. The RF switch is fed with different input parameters and is capable of reacting to its environment.

The energy harvesting RF-switches from ZF can be used in a variety of applications such as industrial automation and building automation, smart home or medical technology. Designed for global use, the switches provide an excellent alternative to wired or battery-powered systems.

System Advantages:
Reduction of connection systems
Flexibility for inaccessible locations
No complex wire assembly
Maintenance-free – no batteries need to be changed
Network-compatible
High energy efficiency
Long mechanical life
Flexible “Pairing” allows the operation of several receivers with one switch (and vice versa)
Unique ID excludes a mutual interference between different RF-switches

 

Description
> Compact & highly efficient Energy harvesting wireless system consisting of a generator and receiver.
> Network compatible wireless data transfer via RF-technology.
> “Unique ID” excludes interference between RF-switches.
> Several frequency bands allow global use within different applications.
> Flexible “Pairing” allows the operation of several receivers with one switch (and vice versa).
> Environmentally friendly – no batteries need to be changed or disposed of.
> Long mechanical life (up to 1.000.000 operations).

Receiver
> Integrated receiver (in existing ECU) or as a separate unit (in a housing/as a plug-in receiver PCB).
> Antenna integrated or external
> Output interfaces: Low voltage relay 230V / 0.5A; RS 232 TTL Bus; RS 485 TTL Bus; Digital interface (high/low) / SPI; USB

Product Range
> The product is available in the form of a “raw” energy harvesting generator or generator with PCB and antenna system, as a rocker switch, snap switch or light switch module.
> A Wireless Switch Module fulfilling KNX-RF 2.0 is also available.

 

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Bulgin Buccaneer Power Range

A full range of IP66, IP67, IP68 and IP69K rated environmentally sealed circular power connectors designed to provide secure, robust and watertight connections in heavy duty, industrial & harsh environment applications. Each series has a flex cable connector, in-line flex cable connector and bulkhead panel mounting options – overmolded cable versions are also available for certain series.

With a wide choice of ruggedized plugs and receptacles offering 2 to 32 poles, popular power ratings including 250V, 277V up to 600V 32A and screw, solder or crimp terminations and metal or plastic connector housings, the Buccaneer power connector range provides the ideal interconnect solution to many design problems.

 

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Crouzet Pneumatic Products

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For more than 40 years now, Crouzet the automation control components manufacturer, has offered a wide range of pneumatic products for simple automation systems using compressed air, without a source of electricity. These products consist of human / machine interface components, position detectors, pressure switches, amplifiers, pneumatic logic components, electro-pneumatic valves and industrial vacuum components.

Air, a cheap renewable source of energy, is suitable for numerous applications, especially in hazardous / explosive environments (ATEX).

Pneumatics products can be found in the following apllications and more:

• Packaging Machines
• Valves
• Medical Equipment
• Food Processing Machines
• Railway Applilcations
• Hazardous & Expolsive Environments
• Textile Machines
• Industrial Vehicles
• Industrial Machines

 

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Sensata ACW4 / TCW4 Hall Effect Sensors

Sensata Technologies, an industrial technology company and a leading provider of sensors, today announced the availability of the new ACW4 Single Turn and TCW4 Multi Turn Absolute Hall Effect Sensors, which feature an over-molded, two-part modular construction that provides engineers with exceptional design flexibility.

The sensing electronics are encased in a thermoplastic polyamide shell while the separate activating magnet is external to the sensor assembly. This modular architecture results in a compact package of only 50mm in diameter by a maximum 24mm thick that allows designers to easily incorporate the ACW4 and TCW4 sensors into both new and existing systems. An over-molded housing completely encapsulates the electronics and seals the cable entry from exposure to the elements, making this IP67-rated sensor an ideal solution for robotic, industrial, manufacturing and material handling applications where dusty or wet conditions are common.

To help save time and cost, Sensata offers a variety of engineered magnet holder accessories that developers can use instead of designing and testing their own. A variety of output types are available to ensure that the ACW4 or TWC4 sensors can interface with the most common controllers. Unlike typical Hall effect sensors, which rely on a shaft to operate, there are no moving parts in contact with each other; eliminating any potential wear or misalignment.

 

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Cynergy3 SIL3 Functional Safety Incremental Encoders

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SIL3 Functional Safety Incremental Encoders
With a robust and reliable design resulting in a wide range of secure products, which can be used in several types of configuration.

Any automated system potentially poses a risk to people, property or the environment. For this reason a number of safety measures have been taken. Safety standards have been created with one thing in mind: limiting risk.

With these standards as a framework, functional safety can, after a risk analysis, provide appropriate protection. Hazards are anticipated during the system design phase and are dealt with before they occur. These standards have evolved to increase the safety level and have been applicable since 2012.

Features
• Usable up to SIL3 and Cat.4 / PLe according to IEC 61508 / EN ISO
13849
• Suitable for safe motor feedback according to IEC 61800-5-2
• Robustness and excellent resistance to shock and vibration
• High protection level: IP65
• High temperature performance –20°C to +85°C
• Power supply 5Vdc or 11/30Vdc
• Digital TTL/RS422 or HTL or sine/cosine 1Vpp output
• Resolutions up to 2500ppr
• 58mm encoder, solid shaft 6mm, 9.52mm or 10mm (DSM5H), and
through shaft, standard 14mm (DSO5H)
• Connector or cable output (DSM5, side output only for DSO5)
• Stainless steel version available as an option (DSM5X) – consult factory
• Adapted anti-rotation system (DSO5H)

 

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Contact E Preston Electrical

tel: +44(0) 161 339 5177

email: sales@epreston.co.uk

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