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Bergquist's proprietary HeatSeal® membrane switches are custom engineered for use in environments where reliability is critical. The HeatSeal process thermally bonds switch layers together, providing a seal that is impervious to moisture, temperature extremes and cleaning chemicals. Options include screened silver ink or PC board circuitry, tactile graphics, rim or pillow embossing, deadfront or translucent windows and more.
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APEM professional membrane switch panels
- Custom designed front panels
- Sealed, easy to clean
- Tactile feedback by snap dome or embossing
- Many options available: texture varnish, integrated components, prominent shapes, changeable legends, reinforced sealing…
Applications: instrumentation, medical, time management, weighing systems, vending machines, access control…
APEM, the broadest offering in the switch market: miniature switches, industrial switches, LED indicators, professional switch panels and professional joysticks.
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Customised membrane keyboards
- Extremly flat profile (> 1mm)
- With or without tactile feedback/snap-action disc
- Integral LEDs/displays
Customised low profile keyboards with RAFI short-travel keyswitches RACON 8/12 on RF15/19 in front panel under an overlay
- Good tactile feedback (click)
- Fully illuminated/spot illuminated
- Integration of displays and electronic compoments
- Integration of RAFI KN 19 main switches (250V / 4A) under an overlay
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Short-travel systems with overlay or keycaps
Keyboards made up of RAFI short travel keyswitches MICON 5, RACON 8/12 or RF 15/19 under overlay or under keycaps.
Advantages
* very good tactility (click)
* fully illuminated
* combination with displays and other components on one PCB
* combination with short travel main switch KN 19, max. 250 V / 4A
* combination with control unit RAFIX 22 FS on one PCB
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A membrane switch generally consists of two polyester films that are screen printed with conductive ink to form the circuit layers of the switch. A spacer, which is die cut at contact points, is then sandwiched between two circuits. The die-cut holes permit a touch of the finger to close the contact, which in turn completes the circuit. Upon release, the circuit is broken.
A graphic overlay is added to the membrane switch to allow the input device user to identify specific switch contacts.
The panel back is laminated with an adhesive for mounting to a backer or enclosure and is terminated with a means for interfacing with the customer’s electronics.
Tactile feedback in a membrane switch is actually an enhancement, which provides the user feedback when they press the key location. Typically, the switch consists of a top and bottom layer of polyester with a tactile actuator that when pressed, momentarily completes the circuit while providing the user a degree of response based on the switches construction.
Non-tactile membrane switches rely on a sensory response other then tactile touch, such as an audio or visual stimuli that alerts the user to switch closure.
Non-tactile switches perform well in abusive environments and are more conducive in applications where large, hidden or irregular shaped keys are a requirement.
Printed circuit board switches are utilized in situations where there are trace routing limitations with traditional membrane switches or the OEM customer would like to utilize the PCB as a ridged backer that can also be populated with active and passive components, reducing the amount of materials and interconnects.
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The standard line of polyester keyboards features all the experience and know-how of GRAFOS. The efficiency of this kind of products, meeting the needs of having a complete and ready to use product, is guaranteed under hard demand. They are available in several models - 33 to 104 keys version- and are used above all for applications of Industrial Automation. There are different models for different applications: from frame to panel version, from desktop to drawer version and finally rack version. Membrane keyboards promise a pleasant palpation feeling with tactile feedback, security and precision during the data input, also by the use with gloves; the polyester front plate is resistant against numerous chemical active substances. In the side photo an example of 87 keys frame version of reduced dimensions and, as pointing option, a plastic trackball.
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Functional and clearly arranged: front foils and foil keyboards
Front foils and foil keyboards allow the production of robust flat input systems in a modern and customized design. Our experience and competence offers you an individual solution with high product safety. If you need simple stickers, individual front foils or a complete foil keyboard with the associated electronics and peripherals: our project teams will work out the most efficient solution for your needs.
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The Trio membrane keypad is a single unit which brings together all the elements required for an effective man machine interface in one package. This minimises the time taken to mount and connect to other Trio Motion technology control system products.
The unit consists of an IP65 keypad featuring 37 tactile keys, eight of which can be defined by the user and identified by inserting key legends from the rear of the keypad. Incorporated into the units is a four line by twenty character, vacuum fluorescent display. Connection to the control system is via a fibre-optic cable to the Master Controller. The interfacing is handled by dedicated built-in network interface software. The only other connection necessary is for the power supply.
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Accessories
* battery compartments
* sealing elements, even with specialized measurements
* screw inserts
* foils
* keyboard foils
* enclosure feet
* card guides
* hinges
* window fields
* stay bolts
* carrier track holders
* etc.
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A membrane switch, or membrane keyboard, is most often described as a thin, low profile, micro motion front panel assembly utilizing one or more layers of polyester, with screen printed conductors printed on each layer. The switch assembly is generally built with pressure sensitive adhesives to bond the polyester layers together.
When two or more circuit layers are designed into the switch panel, the adhesive spacers both separate and attach the conductive layers. Additionally, they provide the openings needed to allow for a switch closure between the two separated layers. Other options that are often provided on the front panel include an adhesive mounting sheet to attach the keypad to a housing or sheet metal bracket, and a graphic overlay. The graphic is used to provide the cosmetic appeal that is most often associated with a membrane switch assembly.
Tactile membrane switches are either stamped and plated metal contacts, or embossed polyester contacts, used in conjunction with a front panel assembly. The tactile element is generally part of the switch system: enclosed in the switch assembly to provide a "snap" or tactile response when the switch is actuated.
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User-friendly, flexible membrane switch keyboards that are long-lasting (>6 million actuations), reliable and cost-effective.
The Clicktouch process produces a thermoformed polyester foil with “elastic” spring zones enabling extended key travel. Circuit layers are printed on polyester substrates with special silver, carbon and insulation links, with additional protection against oxidation provided by over-printing with carbon.
Advantages over conventional membrane and metal dome based keyboards:
•Significantly reduced contact bounce (<2 ms)
•Long key travel (up to 2 mm) providing improved tactile feedback (even when operated by someone wearing gloves, a clear click can be sensed)
•No metal parts, resulting in a longer switch life and greater reliability.
Clicktouch retains essentially the same ergonomic performance as standard mechanical push buttons, but is also:
•Dust-tight
•Water-tight
•Chemically resistant
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Film and short-stroke keyboards
Standard versions
Customer-specific versions
Complete systems
Standard Keypads
Individual keypad from 1 to 40 keys
PC keyboards from 30 to 107 keys
Keyboard decoders and accessories
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... see all the products in the category
Keyboards
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The SS-110 Slow Speed Switch is a complete system that has one adjustable set point for monitoring a single rotating shaft.
This Speed Switch is used in slow speed applications, and allows accurate underspeed detection within the 1/100-10 rpm range. The SS-110 System is an efficient way to continuously track proper machine RPM, and provide a relay output upon detection of an unwanted change in speed or stoppage of the monitored shaft.
Features:
- Dial-In Calibration Does Not Require Power
- Set Point Ranges: .01 - 0.99 and 0.1 - 9.9 rpm
- ETL Approved to UL 508 Standard
- Completely Field Adjustable
- Fail-Safe Operation in Underspeed Mode
- DIN Rail or Stand Alone Mounting
- Additional DIN Rail Available - Consult Factory
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Speed responsive switches detect motion, or sense over-speed or under-speed occurrences of industrial machinery or motors. Hubbell Industrial Controls, Inc. has both direct coupled or non-contact type switches for; directional, non-directional, plugging, anti-plugging, over-speed, under-speed, and also zero-speed applications. Many enclosure styles are available including surface or flange mounting with NEMA 3, 4, 7, 9, 10 or 13 construction.
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The combination of a coder with ends of the road in the same case increases the reliability and the safety of the machines, because of two independent checking circuits in the same case.
The coder integrated provided information uninterrupted of the movement in 5-30 VDC with a resolution from 100 to 5000 increments. The programmable ends of the road, the catch of origin are regulated freely with the position wished.
The adjustment of the ends of the road is very simple: the case is assembled on the machine, the machine is then led manually to its limiting position, the end of the road is positioned with a key of programming. This procedure is repeated for the other end of the road.
The case is well protects by its cap against dust or any external intervention; all the signals are cabled on a connector with the back of the case.
These cases can also be provided with potentiometers.
COMP' AUT will be able to best advise the customer in the choice of the case being appropriate for its application.
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These PCB series of acceleration or shock sensors are intended for applications where acceleration, velocity or impact need to be sensed. Many commercial applications exist (automotive, motorbikes, test equipment,…)
Their size is very small enabling them to be mounted practically everywhere. High reliability, robustness and no power needed for activation, are their major advantages.
These acceleration and shock switches are available from 1 to 15 g-level .
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ASLS-2
Contact Form/Style: Normally Open
Switching Voltage: 24Vdc Max.
Switching Current: 0.25A Max.
Switching Capacity: 5VA Max.
Activation Level: 2-4.9G
Contact Resistance: 10 Ohms Max.
Size: Over All Length: 0.709in (18.0mm)
Diameter: 0.181in (4.6mm)
Electrode Diameter: 0.020in (0.50mm)
Electrode Spacing: 0.114in (2.92mm)
Acceleration and Shock Switch
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The 20.SS is an electromechanical device designed to protect equipment from damaging shock or vibration. The sensitive mechanism detects excessive shock and shutdown the equipment before further damage occurs.
20SS shockswitches are housed in an ATEX certified enclosure and can be used for applications requiring an execution of EEx-d-IIC-T6.
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POWER SWITCH
Plug and Play with RF POWER SWITCH
The innovative RF POWER SWITCH from HUBER+SUHNER sets new standards and is the simpliest solution for switching between two RF channels.
The RF POWER SWITCH family is a new product group designed for applications in mobile radio base stations. Thanks to the Plug and Play concept, switching is done automatically as soon as the mating connector is plugged in.
RF POWER SWITCH connectors are used for combining two transmit signals (TX) to increase the coverage of the mobile radio base station. In addition, they simplify the installation of modules and the cabling of base stations. The RF POWER SWITCH replaces electronically controlled RF relays and allows simplified PCB layouts with a more compact design. This ultimately produces appreciable cost reductions.
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