Varga Elektronik team would like to thank you for your trust and pleasant business over the past year.
Our office will be closed during the holidays from 27th December 2016 until 2nd January 2017.
We wish you a Merry Christmas and a Happy New Year!
December 20, 2016
The front panel interfaces Modlink MSDD from Murrelektronik provide uncomplicated and safe access to the control unit without having to open the cabinet door. A variety of country-specific sockets and data connectors provide high flexibility; comprehensive approvals allow a worldwide application.
Software of control units often have to be adapted during operation. To do this, they have to be connected to laptops or diagnostic devices. This is often only possible with the cabinet door open which in turn costs time and money. If changes have to be made during operation, service technicians sometimes come up with a makeshift solution to access the control unit. This temporary wiring can be prone to errors and is a less-than-ideal solution.
This can be avoided by using the front panel interface Modlink MSDD. Modlink MSDD is a modular system which consists of standardized single and double frames made of metal or plastic which are installed into the control cabinet. More than 170 different inserts with country-specific sockets and data interfaces (for example SUB-D, RJ45 or USB) can be snapped into place. Whether they’re used in China, Canada, France or in many other countries – Murrelektronik has the right solution!
This variety allows you to have more than 100,000 combination options. In all single frames, there is space for at least one country-specific socket and data communication. If several sockets and interfaces are necessary for the application, the double frame offers the required space. The high protection class of IP65 ensures that the Modlink MSDD front panel interfaces can also be used in rugged environments. Thanks to shielding plates, the EMC requirements can be met.
In the industrial area, sockets must be secured, according to the standard, up to 20 A using residual current devices (RCDs). Therefore a commercially available 2-pole safety switch can be integrated in Modlink MSDD. After an error, just reset the safety switch. For the data communication, this insert can be equipped with a USB-A or RJ45 connection depending on practical needs. The result is a complete programming interface including a secured electrical connection. This solution is unique on the market.
Approvals are important for international use. Modlink MSDD front panel interfaces with the well-known double-bit lock for control cabinets are certified by UL according to cURus. The approval for the inserts is a so-called design approval. Thus newly configured inserts are as of now approved according to cURus.
October 6, 2016
New White Paper: Efficient redundancy for power supplies
PULS engineers worked out a genius MOSFET decoupling solution for redundancy modules. It secures a reliable system availability in case of short-circuit and highest efficiency.
The White Paper tells you more about ten criteria that are essential for optimal redundant systems. Standard epitaxial or Schottky diodes can not fulfil all of these criteria - e.g. the need for minimal no-load losses.
You will also learn more about the parallel-use mode and the fascinating „hot swapping“ technology that enables you to replace a power supply or a redundancy module while the system is running.
Reliable system availability in case of short-circuit
Efficient redundancy for power supplies
Redundancy modules guarantee reliable system availability, even if a power supply fails. However, the decoupling diodes in the module lead to high power losses in form of heat and a large voltage drop. Therefore, PULS is replacing the diodes with efficient MOSFETs. The redundancy modules also receive further useful features.
In a redundant system, two or more power supplies are switched in parallel and decoupled by one or more redundancy modules. The module prevents short-circuiting of the bus voltage if a short-circuit occurs in the output side of a power supply. To achieve this, a diode or equivalent component is used for decoupling. One is sufficient for each power supply. The disadvantage of this method: diode decoupling causes significant power losses in form of heat.
A load current of 40A creates approx. 20W of power losses (image 1). This means heavy thermally induced stress for the electronics, which can only be reduced by means of large heat sinks. PULS engineers were not willing to accept this compromise. They carried out research to find out what users require specifically in a redundancy system.
Ten criteria have emerged for optimal redundancy:
- Highest safety and availability
- Minimal power losses
- Ease of use
- Load-side return voltage immunity
- Short-circuit protection
- Parallel function: Power distribution between power supplies
- Signal in case a power supply fails
- Inverse-polarity protected input
- Signal in case of error condition
- Hot swapping: Swapping without voltage interruptions.
When analysing the results, it quickly became clear to the development team that standard epitaxial or Schottky diodes could not fulfil the need for minimal no-load losses. Therefore, a decoupling solution with MOSFETs was developed instead.
This technology reduces power losses. For instance, when using a MOSFET module, a load current of 40A will only produce power losses amounting up to 3W instead of 20W. However, points five and eight were a major challenge for the development team when designing the new MOSFET solution. This is because short-circuits or inverse polarity in the power supplies could destroy the MOSFETs.
Circuit design actuates MOSFET in case of short-circuit
If a short-circuit occurs in the load or cabling, the power supply voltage fails and almost no useable voltage is present at the redundancy module input. However, the MOSFETs in the redundancy module must remain continuously actuated for the short-circuit current to flow with low power losses. Otherwise, this current is absorbed by the body diodes in the components. This increases power losses by 15 times and could eventually destroy the MOSFETs. This weak point of the components is overcome by a new circuit that even in the case of a short-circuit, it takes advantage of the minimal residual voltage to actuate the MOSFETs properly (image 2).
The circuit can be bypassed even in other critical situations, such as when the power supplies are connected to an existing short-circuit or if the input voltage has been reverse-poled.
A voltage drop of just 50 mV
With MOSFETs as a decoupling element, even voltage drops can be minimised. Diodes in standard redundancy modules cause a voltage drop of 500mV between the input and output. Thanks to the MOSFET redundancy modules, this situation could be improved drastically. For instance, in the redundancy module YR80.241, the voltage drop at 40A output current is lower than 50mV between the input and output.
Uniform power distribution via parallel function
After implementing MOSFETs, even the parallel-use mode achieves better thermal balance, thus leading to an extended lifetime. In this process, the load current is divided equally between the individual power supplies.
There are two ways of integrating the parallel function in the system. It can be either integrated directly into the power supplies or into the redundancy module. In the integration of power supplies, the output voltage is regulated in such way that it is around 4% higher at no load than it is at nominal load. This results in an automatic current distribution between devices, as long as their no-load voltage is identical. If a power supply takes up more current, its voltage decreases automatically and a current symmetry is restored. This property ensures that there are no power losses in the current distribution. In the integration of the parallel function in the redundancy module, the MOSFETs are used in linear mode. They generate a well dosed voltage drop in the channel with the higher voltage so that a current symmetry is achieved between the two channels, i.e. the power supplies. This method also enables power supplies without integrated parallel-use mode to be used in parallel. PULS developers deal intensively with the optimisation of both approaches. It is crucial for the parallel-use mode to always support the safety, availability and efficiency of the redundant system – both for classic 1+1 redundancy systems and for N+1 systems.
Hot swapping – replacement without voltage interruptions
An additional technical innovation was implemented in the design of the redundancy module YR40.245. Hot swapping is therefore also available in this module for the first time. With "hot swapping" one understands the replacement of a power supply or a redundancy module while the system is running. To enable this, the critical connections have plug connectors with short-circuit protection. If the predetermined sequence is observed when replacing the defective device, it can be replaced without voltage interruptions. Redundancy is restored immediately after replacement. This is indispensable for systems, whereby even a temporary failure could mean significant security risks or serious economic losses.
PULS is the only company worldwide focused entirely on the development and production of DIN rail power supplies. We concentrate our engineering knowledge, resources and energy on one goal: To be the best in this technology. As a result of this focus, our product families DIMENSION, PIANO and MiniLine set standards in terms of efficiency, size and service lifetime.
September 22, 2016
Active illuminated safety emergency-stop with status indication active/inactive
- mounting diameter Ø 22.3 mm
- with status indication (active/inactive)
- in acc. with ISO13850:2015(E), EN 13850:2016
- easily visible
- delivery without external LED monitoring unit
- LED: 24V DC/18mA
- Faston connection 2.8x0.8 mm
- with switching position indicator
- degree of protection IP65
- available with 2 NC
- possible use, p. ex.:
- pluggable operation stations
- wireless operation stations
- pluggable plant parts
July 14, 2016
New Marine Pressure Transmitter ECTN 8477 completes Trafag's shipbuilding portfolio
The reliable and robust Marine Pressure Transmitter ECTN 8477 completes Trafag’s pressure transmitter product range for the shipbuilding industry. It has already been approved for the use on ships by the classification societies of GL-DNV, KRS and RINA.
The Marine Pressure Transmitter ECTN 8477 with thick-film-on-ceramic sensor bases on the technology of the ECTfamily which has proven its reliability in thousands of demanding industrial applications. The Marine Pressure Transmitter ECTN 8477 has already been approved for the use on ships by the classification societies of GL-DNV, KRS and RINA and more are yet to come.
Pressure measurement ranges from 0 …1 bar up to 0…400 bar, allowable temperature ranges from -25 … 85°C and a design where considerable emphasis has been focused on robustness against vibration and EMC are ideal preconditions for marine applications, where the requirements regarding reliability and safety are extremely high. To ensure a correct and long-term stable measurement even in highly corrosive environments, the Marine Pressure Transmitter ECTN 8477 is available in AISI316L as a standard, but also optionally in the salt water resistant duplex steel 1.4462 and in titanium.
The Marine Pressure Transmitter ECTN 8477 completes Trafag’s marine pressure transmitter portfolio. Trafag, established in the shipbuilding industry for 50 years and well-known for its reliable solutions for pressure and temperature measurement and monitoring, offers beside the ECNT 8477 two more marine pressure transmitters, i.e. EPN/ EPNCR 8298 and NAE 8256, which both are based on thin-film-onsteel sensor technology. The EPN/EPNCR 8298 is the first choice when it comes to measure pressure up to 2500 bar and in general where long-term-stability is crucial. The NAE 8256, which features the same extremely stable thin-film-on-steel sensor, is the only marine pressure transmitter in the market in the very small size of HEX19, which makes it the preferred solution there space is extremely limited.
June 10, 2016
Full Inox Miniature: Small, smart and indestructible
The new series of Full Inox Miniature inductive sensors from Contrinex are the smallest self-contained inductive sensors on the market. Available in sizes M5 and Ø 4 mm as both PNP and NPN types, they are ideal for use wherever space is scarce and operating conditions are harsh. Thanks to a high-quality ASIC with integral IO-Link interface, all PNP-types in this series satisfy the requirements of smart factories.
Full Inox Miniature sensors have excellent temperature stability from -25°C to +70°C (-13°F to +158°F), a high switching frequency up to 1200 Hz and a long operating distance of 3 mm. The robust, one-piece stainless steel housing of these inductive sensors has IP68 and IP69K protection. It is corrosion- and seawater-resistant and resists pressure up to 80 bar. These housing characteristics, combined with encapsulated electronics, ensure consistently optimal reliability even under high loads and in demanding environments, for example in robotics, micromechanics or linear drive technology. With an IO-Link interface integrated as standard, these sensors are well equipped for the demands of modern smart factories.
Thanks to their subminiature size, robust housing and long operating distance these Full Inox Miniature series sensors are ideal for applications that require the highest reliability and durability in the smallest space. They contribute to a reduction of machine mass without sacrificing mechanical strength. Sensor-related downtime is virtually eliminated.
May 20, 2016
Industrial Ethernet Connectors: The largest selection
Murrelektronik offers the widest range of Industrial Ethernet connectors on the market. No matter if they’re used in IP20 cabinet wiring, in a harsh industrial IP67 environment, or from the cabinet or the office world into the field - Murrelektronik has the cordset you need.
The cables are designed to meet industrial requirements in a variety of ways. They can be produced in almost any length, with your choice of connector style (straight, 90°, 45°), and direction in which the cable connection is made (left, right, up or down) in quantities as small as a single piece. The cables feature 360° shielding to ensure reliable data transfer. The compact housing saves space while the RJ45 connector clip has been refined to be easy to handle and install.
Murrelektronik’s Industrial Ethernet cordsets are available to meet Cat. 5, Cat. 5e, Cat. 6 and Cat. 6A specifications.
All Murrelektronik Industrial Ethernet cordsets are 100% quality tested. This means they are electrically tested with regard to high voltage, function, pinning and short circuit as well as visually inspected to guarantee Murrelektronik’s high standard of quality.
May 9, 2016
Pluggable cable entry plate… KEL-QTA
For a quick and tool-free installation of multi-conductor and factory terminated cables the cable entry plate KEL-QTA is perfect.
The KEL-QTA combines the split QT grommets with our membrane version of the icotek cable entry plates within a single unit.
Up to 34 multi-conductor and factory terminated cables can be installed by using multiple grommets.
The KEL-QTA is available in the sizes:
- Size 10-pole standard industrial connectors
- Size 24-pole standard industrial connectors
- Quadric in 46 x 46 mm
- In metric sizes M32 and M50.
Easy, tool-free assembly - watch our assembly video on youtube.
April 4, 2016
WERMA launches AndonSPEED
A unique andon light system to optimise warehouse processes
WERMA Signaltechnik, based in the south west of Germany, is launching at Logimat in Stuttgart (8th-10Th March 2016) a unique, intelligent call for action andon light system for warehousing and packing operations. Unlike traditional andon lights this not only gives clear and immediate optical signalisation of operational condition changes but also documents and analyses non- productive events.
Notify a call for action/assistance direct from the work-station
AndonSPEED allows the member of staff to simply press a but-ton on his packing station and activate a signal light which gives a clear indication of the type of assistance required and thereby enable intervention to respond immediately.
Whether it be a request for new material to be delivered, assistance required or that work is running out, with the help of AndonSPEED the appropriate intervention can be called up im-mediately. This can help reduce waiting times and delays in responding to requests for intervention and thus make the operation more lean and efficient.
AndonSPEED is not only quick and simple to install but is intuitive and thus very easy to use. The different events or requests are commonly signalled with red/green/amber lights and so little training is required to understand the significance of the warning lights which can be a significant factor if the workforce might be largely inexperienced / seasonal.
Improve processes through the reports and analyses generated
AndonSPEED collects and stores all status light changes and can generate reports and analyses. The software package supplied with the system provides accurate and impartial process data and improves transparency of the operation.
Decisions can be made based on the impartial data provided by AndonSPEED reports. Bottlenecks can be identified, pro-cesses optimised and long lasting counter measures instigated. “It is possible to reduce waiting time at the workstation by up to 50% comments Winfried Huber”, Sales Manager at WERMA Signaltechnik.
The data is presented in clear and easy to follow visual displays, allowing you to look at the different performance characteristics of the operation and more easily identify possible deficits.
The improved transparency of disruptions and waiting times in the operation permits continuous improvement measures to be put in place and release hidden potential and optimise the process.
March 25, 2016
DIN-RAILway power supplies – a new standard in the railway sector
Proven Industry Technology on Rails
Author: Christoph Frodl, Engineer for Special Applications at PULS
For those of you who have sat waiting on a train due to technical problems, you know only too well that more reliable technology on the railway should be the highest priority. A modern train composition is technically highly complex and nothing moves without a reliable power supply. A DIN-RAILway power supply is the answer from PULS for a more robust and reliable DIN-Rail power supply on the railway.
Of course, there have been specialised power supplies for the railway for many years. The demands are high and in several areas: Failures cannot occur, even with high mechanical shock in an even broader temperature range. In general, fans are not allowed because these constitute an increased risk of failure. This in turn requires the highest efficiencies in very compact units that can only discharge heat loss via natural convection. PULS, as a market leader in the field of industrial power supplies, meets the strict requirements of the various railway standards with a variation of its standard industrial power supply. PULS is known for its quality, reliability and longevity as well as its protection against tough environmental and EMC conditions. This reputation is due to carefully selecting components and a robust design.
Historically, the input voltages in railways differ from those in industry. However, the voltage adjustments were no problem thanks to PULS’ highly flexible circuit designs. A new range of power supplies is now available to the railway sector, whose concept has already been proven in tens of thousands of industrial applications worldwide. PULS technology provides a special feature for railway technology by allowing the devices to be mounted onto a DIN rail. The PULS portfolio includes 1 and 3-phase units as well as DC/DC converters for railway applications.
The EN50155 standard defines the requirements for the use of electrical devices on rolling stock. Compliance ith EN 50155 must of course be demonstrated through proper testing. What tests are required?
- Vibration resistance (DIN EN61373): This standard constitutes significantly more severe test conditions than those required for industrial power supplies. This makes it possible for the unit to be installed in the vehicle body, on the roof and even under the floor.
- Temperature range: Industrial power supplies from PULS can be operated up to an ambient temperature of +60 °C without derating. For the railway sector, the suitability in accordance with EN50155 could also be demonstrated on some devices at an extended temperature range of up to 70 °C continuously and 85 °C for 10 minutes. QS5.241-60 meets the temperature class T3 and the QS10.241-60 and CPS20.241-60 even meet class Tx (-40°C).
- EMC resistance (EN50121-3-2): In the railway sector high requirements apply with respect to dielectric strength and interference. The PULS low-noise circuit topology demonstrates a high degree of EMC resistance.
- Fire protection in accordance with EN45545-1: Industrial power supplies from PULS are UL-certified as standard and have been tested in accordance with the new fire safety standard EN45545-1. PULS units are not sealed and thus have a low fire load, which is an additional advantage and makes the unit extremely light.
Where specifically does PULS score points?
Anyone who has successfully marketed power supplies for a period of time can only do so by providing units of the highest quality because otherwise it is not possible to remain in the market. In the industrial sector intrinsic properties such as highest efficiency, smallest dimensions, lowest weight, longest lifetime (> 60 000 h), maximum availability are also key factors to staying in a very competitive market for the long term. Naturally, these factors are also of key importance in the railway sector. To give an example: The CPS20.241-60 unit from PULS has an output power of 400 W throughout the entire temperature range and has an integrated MOSFET decoupling circuit at the output for redundant operation with passive load sharing. It also has an efficiency of 94% and if the input voltage fails - even in the event of a short-circuit- the output voltage remains available for more than 20 ms. Short interruptions can therefore be easily bridged. The vast power density is achieved in a 65mm housing width and a weight of only 1000g. Even more appreciated are the active input inrush current limiter and the integrated reverse polarity protection for DC voltages at the input.
But what really distinguishes the new PULS DIN-RAILway power supplies is the extremely simple DIN-rail fixation. The conventional wall mounting used in the past often led to heat conduction through the mounting plate. In industry, such mounting concepts should only be used as an exception. The majority of electronic and electro-mechanical devices are mounted to DIN rails. The industrial concept from PULS therefore also brings great advantages to the railway sector, because vibration-proof mounting on DIN-rails is only possible if the device has a high-quality DIN-rail fixation system and minimum weight.
It is not only the fast mounting on DINrails that is an advantage, but also the absolutely vibration-free connection that you get from using spring terminals. Loose screw terminals are one of the most common failure causes in electrical systems and frequently lead to fires. In industry, the use of spring-loaded terminals has, to a great extent, displaced the use of screw terminals. This has occurred because protection against the effects of vibration is inherently controlled by the spring clamp terminals which is why they are more frequently used in the signalling and power supply fields.
The railway series from PULS
The opportunity to go to a one-stop shop - whether for AC/DC or DC/AC – solutions from a single source are particularly appreciated by users. The PULS spectrum:
- DC/DC converter in the power ranges 100 W, 200 W and 400 W
- AC/DC power supplies in the power ranges 240 W and 480 W
- 3AC/DC power supplies in the power ranges 240 W and 480 W
The DIN-RAILway power supplies from PULS represent a new range of railway power supplies whose concept has already been proven in tens of thousands of industry applications worldwide. A complete range of 1 to 3 phase units and DC/ DC converters are currently available, all of which can be mounted to DIN-rails. The units are: convection cooled, equipped with vibration-free spring clamp terminals, very compact, extremely lightweight and exhibit the highest level of efficiency. PULS DIN-Railway customers also have the benefit of working with the logistical resources of a large-scale manufacturer.
Din Rail Power Supplies by PULS can be used in the train and on the track.
Typical applications include:
- Central Power,
- Air conditioning,
- Signaling Technology,
- Train Security.
March 10, 2016
Submersible Pressure Transmitter ECL 8439
A reliable and economic solution for many applications — also in thick and viscous media. Different material options for optimum media compatibility and a smart and robust design guarantee accurate and stable pressure and level measurement even in harsh environments.
The new ECL 8439 submersible pressure transmitter is the ideal choice for reliable and cost-effective level measurement in applications with drinking water, grey water and sewage water, oils and fuels, seawater and many more.
The robust ceramic sensing element of Trafag’s own production and the high-performance electronics based on the Trafag ASIC allow accurate measurement even under harsh conditions. The electronics complies with EMC standards EN/IEC 61000-6 and features an integrated lightning protection as standard.
The pressure connection, covered by a removable cap, has a wide conical opening which is ideal even for viscous media and still protects the measurement membrane from accidental damage. The ECL 8439 is available in AISI316L or duplex steel 1.4462. The duplex steel is particularly recommended for sea water applications and is a good and cost-effective alternative to titanium.
The type label information is laser engraved to ensure easy identification of all relevant device parameters even after many years in aggressive media.
The compact housing with a diameter of 25mm and a length of about 100mm is available in two versions: The completely cylindrical standard version and the OEM version with M22x1.5 adapter thread. The M22x1.5 thread can be used to attach adapters for cable piping systems or to mount the transmitter in the tank. Both versions can be immersed for pressure and level measurement in water up to 20 meters in depth.
Data sheet: www.trafag.com/H72336
Overview of Advantages and Performance:
- Suitable for thick and viscous media
- Different materials for optimum media compatibility
- Lightning protection integrated
- Water treatment, Seawater, oils and fuels, etc.
- Measuring principle: Thick film on ceramic
- Measuring range: 0…0.1 to 0…2.0 bar; 0...1.5 to 0...30 psi
- Media temperature: -25°…70°C
- Output signal 4…20 mA
March 1, 2016
Stainless steel enclosure and adapter ring
Completely assembled stainless steel enclosure for wall and profile mounting
- Robust stainless steel square profile V2A, 40x40 mm (wall thickness 2 mm)
- Designed for wall and profile mounting (incl. slot nuts)
- For 1 to 6 actuators
- Equipped with actuators of the Shortron range
- Degree of protection IP54/IP65
- With M12 connector (1-3 actuators) or direct wiring via cable gland (4-6 actuators)
Adapter ring for series KOMBITAST-R-JUWEL
- for the fixing of all panel mount jacks of the series Rontron-R-Juwel in a panel cut-out Ø 30.5 mm
- Ø 30.5 to Ø 22.3 mm
February 15, 2016
multiPANEL offers the option of integrating every conceivable application. The enclosure front of the »multiPANEL DISPLAY« facilitates the permanent installation of a front plate or glass front, e.g. for touch applications. Almost borderless, with flush installation and permanently connected with the enclosure. Suitable cut-outs for switches and more are included in the service provided by ROLEC, and are established in the production department at the German headquarters in accordance with customer specifications.
It is possible to directly integrate commercially available built-in panels in the front of the »multiPANEL KOMMANDO« enclosure. A small recess in the framework enables almost flush integration of the PC here. Furthermore, front plates can be inset in the frame from the front or rear, and fastened in place with clamping pieces. The combination of direct panel installation and a part front plate is also possible.
With the flat multiPANEL 70 version, the rear wall is optionally available as a flush rear wall, which can be supplied with hinges and a lock or as a bolted version where required. A robust, 15mm deep, framed door including lock and internal hinges offers a greater installation depth. This results a multiPANEL enclosure depth of 85mm. Furthermore, a 60mm deep framed door version is also available for an even greater enclosure depth, which is also equipped with a lock and internal hinges. The total depth with this version is 130mm. Internal mountings can naturally also be installed in the door. For this purpose, stays are fitted inside the door on request by the customer, in preparation for the technical installation. Furthermore, a circumferential groove is available inside the 60mm deep door, for mounting clamping pieces.
|Enclosure sizes|| Accurate to the millimetre as per customer's needs
L x W x H max. 800 x 800 x 70/85/130 mm
|Additional infos||Puristic, multi-variable design for modern machines
Profile enclosure – produced to the precise millimetre
Three enclosure depths: 70, 85 and 130 mm
Five front installation options
Direct access possible with three door designs
Aluminium corner pieces mounted with aluminium profiles
Standard front plates: Aluminium 3 mm, Al Mg 1, silver anodised
Optional: Finished front plates, bored, stamped, engraved or printed
Membrane keypads ready for installation
Optional handle: POM RAL 9005, with stainless steel inlay V2A
Enclosure lock: rear wall bolted (only MPD 00 and MPK 00), lock and hinge, black
|Fastening||With the suspension arm system profiPLUS 50 Panel coupling|
|Internal mounting||Slide-in contour for spring nuts M4/M5|
|Ingress protection||IP 65 / EN 60529|
|Surface||Powder coating RAL 9005 Deep black, fine structure
February 4, 2016
Cable entry KEL-DPU | universal, robust & hygienic
With the new universal cable entry plate KEL-DPU by icotek standard cables, wires, optical fibres or pneumatic hoses can be quickly and safely routed into electrical enclosures, housings or machines and additionally strain relieved.
High stability, tightness and strain relief
The cable entry plate KEL-DPU is especially characterised by its very robust hard frame made of polypropylene which is completely moulded with elastomer. This results in a high ingress protection and stability as well as in a high strain relief level of the routed cables.
Cables passing the membranes at the plate front are sealed a second time through conical cable sleeves at the back of the KEL-DPU. This unique grommet design provides sealing rates IP65 / IP66 (certified acc. to EN 60529).
In addition, the cable entry plate KEL-DPU meets the high requirements of protection class NEMA 4X (certified acc. to UL 50E), confirming its excellent performance in harsh environments.
The alternative to standard cable glands
In comparison to common cable glands the packing density of the KEL-DPU is significantly higher – even when using multi sealing inserts with the cable glands.
Up to 32 cables or hoses can be routed with just one KEL-DPU. The cable entry plate fits on space-saving cut-outs (36 x 112 mm) for common 24-pin industrial connectors.
Quick and easy mounting
The mounting of the plate by screwing or tool-free plugging is remarkably quick and easy. When plugging the KEL-DPU the screw holes remain completely sealed by the elastomer layer.
Even the installation of cables or hoses can be done reliably and within seconds. Simply put a small slit into the thin membrane and push the cable through.
Large type variety
Currently it can be chosen from 7 different types, depending on number and diameters of the cables. The highly flexible clamping ranges of the membranes enable the routeing of cables from 3.2 to 20.5 mm in diameter.
The cable entry plate KEL-DPU is available in grey or black and can be optionally delivered with threaded bushings pressed into the screw holes.
Hygienic design – flat surfaces, detergent resistant
In food and packing industries hygiene is very important. Dirt-collecting recesses on machines and plants have to be avoided.
The flat and completely sealed surface of the KEL-DPU is perfect for these requirements. Dirt or dust can hardly accumulate on the plate and it is easy to clean. Furthermore, the KEL-DPU is certified for ECOLAB detergent resistance.
Advantages & benefits
- Very high stability
- High strain relief due to the special design of the cable sleeves
- Screw or plug-in mounting possible
- Very high packing density (compared to cable glands)
- Simple and quick assembly with cables
- Flat surfaces - no dirt-collecting recesses (hygienic design)
- Resistant against ECOLAB detergents
- Double cable sealing with IP65/IP66 and NEMA 4X
For the KEL-DPU icotek also offers useful accessories. Already pierced membranes can be resealed with ST-B plugs. This way the IP ratings IP65 and IP66 still remain.
To get a reliable EMI shielding on the routed cables directly at the inside of the enclosure or machine wall, the EMC cable assembly bracket KEL-EMC-PF can be screwed directly on the back of the mounted KEL-DPU (screw mounting only) using the screws of the cable entry place.
For mounting the KEL-DPU on Rittal enclosures with prefabricated cut-outs the icotek flange plates FP-AE, FP-KL or FP-BG can be used. In this case the protection class is reduced to IP54 which is conditioned by the enclosures themselves.
Technical specificationsMaterial: frame: polypropylene, sealing plate: elastomer Colours: grey (similar RAL 7035), black Flame class: UL94-V0 self-extinguishing Protection class IP: IP65, IP66 (certified acc. to EN 60529) Protection class NEMA: NEMA 4X (certified acc. to UL 50E) Temperature: -40°C to +90°C (static) Properties: halogen free, silicone free Cut-out: 36 x 112 mm Mounting height: 14.5 mm
January 27, 2016
IODD on Board
Now you can set up machines and systems with IO-Link devices even faster. Murrelektronik is the first manufacturer to offer "IODD on board" which allows you to “Plug & Play” when integrating IO-Link devices.
An IODD (IO Device Description) file describes sensors and valves. It contains information about the device’s identity, parameters, process data, diagnosis data, communication properties and other details.
Murrelektronik's new MVK Metal and Impact67 fieldbus modules have IODD files (for participating manufacturers IO-Link devices) integrated into the GSD file. If those devices - like IO-Link sensors or valve clusters - are included in an installation, this database is available and can be quickly integrated. Prior to this each new IO-Link master had to be individually integrated into the software taking up valuable time. If a large number of identical sensors had to be connected, the process had to be repeated for each new device on the network. This was a time consuming and error-prone process.
Now, with "IODD on board", the IO-Link master is configured by the control – and the setup is complete. Just “Plug & Play” and the job is done.
Another interesting feature of these new modules is the option to integrate IO-Link devices by assynchronous access. This option is also available on the new Cube67 IO-Link master module. All of Murrelektronik's new IO-Link modules correspond to IO-Link specification 1.1. and are equipped with IO-Link Class A and B ports.
January 15, 2016
Washdown sensors; food-grade inductive sensors withstand high-pressure cleaning
Food-grade washdown inductive sensors from Swiss manufacturer Contrinex are completely compatible with the strict hygiene standards of the dairy industry, helping maximize plant utilization during round-the-clock production of milk-based foodstuffs. Rated to IP68/IP69K, Contrinex stainless-steel washdown sensors withstand both aggressive cleaning chemicals and high-pressure water jets, offering highly robust solutions for the harshest operating environments. Food-grade sensors are available with IO-Link, a standardized serial connection protocol, providing digital communication in washdown areas at no additional cost.
- Maximum plant utilization in hygienic processes
- Elimination of sensor-related downtime
- Digital communication without the need for special cabling
- Outstanding process monitoring and control capabilities
- Fast, easy set-up and reconfiguration
Advantages of DW-LS-603-M12 and DW-L#-703-M## inductive sensors
- Corrosion resistant, food-compatible sensors
- Enclosure rating IP68/69K
- IO-Link interface
- Extremely robust Full Inox types (One-piece, stainless-steel housing; Factor 1 on steel and aluminum; Ecolab certified)
January 8, 2016