steute Technologies GmbH & Co. KG
About us
Where other switching devices cannot cope, the products in our business field Controltec are in their element. They have been especially developed for use in extreme environments, e.g. high or low temperatures, explosive zones, very hygienic areas for foodstuffs or very dirty production halls. Examples from our comprehensive range include safety sensors in degree of protection IP 69, vibration-resistant Hall sensors, immersion-resistant foot switches in degree of protection IP 68, robust emergency pull-wire switches for underground mining applications and salt fog-resistant position switches in degree of protection IP 66.
One focus of this business field is switchgear for use in explosive zones, certified in accordance with European and international norms, such as ATEX and IECEx, as well as national stipulations, such as EAC and Nepsi.
Products
Emergency pull-wire switch Ex ZS 92 S / Belt alignment switch Ex ZS 92 SR
The "Extreme" versions of the new steute ZS 92/ZS 92 SR emergency pull wire and belt alignment switches have already been tried and tested in practice. Now steute will be showing for the first time Ex versions of these two switching devices, both developed especially for adverse environments. Design features include very robust die-cast aluminium housings with multiple coatings (passivation, base coat, powder coating), a high protection class (IP 65) and significantly reduced actuation force and actuation travel compared to their predecessors. This makes it easier to actuate the emergency stop function and also means reliable fulfilment of all relevant international standards (for e.g. emergency stop switchgear, emergency pull wire s witches or the safety of continuous conveyor equipment). The emergency pull wire switches in the Ex ZS 92 S series will be available with ATEX/IECEx approvals for zones 1 (gas Ex) and 21 (dust Ex). The belt alignment switches in the Ex ZS 92 SR series will be approved for zone 21 (dust Ex).
Emergency pull-wire and belt alignment switches for extreme ambient conditions - product range now completed
At the Solids 2023, the steute business unit "Extreme" will be presenting an expansion - or rather doubling - of its ZS 92S/SR series. To date, these extremely robust and versatile emergency pull-wire and belt alignment switches have been "packaged" in a die-cast aluminium enclosure ideally suited to unfavourable ambient conditions thanks to multiple coatings (passivation, base coat, powder coat). Users can now alternatively opt for an enclosure which is made out of top-quality duroplastic and is anti-corrosive beyond all reasonable doubt. All screws and connecting elements are stainless steel. The entire series features a high degree of flexibility. The ZS 92 S is available with a variety of pre-installed settings for the release lever and the unlocking mechanism. This means that the switch can be installed in nearly every conceivable operating position, including the rear side. Installation dimensions are compatible with other readily available emergency pull-wire and belt alignment switches, making it easy to retrofit existing (conveyor) plants with the new switches or to exchange them later. In the ZS 92 SR belt alignment switch, the switching points for advance warning and switch off are easily adjustable in 5° steps, considerably increasing its practicality and versatility. Users also benefit from significantly reduced release forces and paths when actuating the emergency stop function. They make the safety switch easier to operate and also mean that all the relevant international standards (e.g. regarding emergency stop devices with mechanical latching function) are reliably met. The latest additions to the ZS 92 series with their robust plastic enclosures – whether as emergency pull-wire or belt alignment switches – are thus ideally suited to bulk conveying and handling applications.
Wireless belt-alignment switch ZS 92 SR with RF I/O
Combining the ZS 92 SR belt alignment switch with the RF I/O radio module has enabled steute to develop a new and robust wireless switching system. The Zs 92 SR is an exceptionally robust switching device with a multiple-coated die-cast aluminium enclosure monitors the alignment of conveyor belts. Its actuator lever detects any belt misalignment. In such cases, the switch triggers a stop of the conveyor system or a correction of the belt – depending on its integration within the control system. The signal is usually sent to the control system via a cable. But when large distances are involved, this requires a great deal of cabling, and rough environments with their adverse conditions are more prone to disturbances and downtimes than clean production areas. Taken by steute in collaboration with an interested gravel works operator, it was a logical step to develop the ZS 92 SR further: the belt alignment switch has now been adapted to communicate with the control system via radio. Another contributory factor making this a logical step was that both the necessary hardware and the wireless technology already existed: steute offers a wide range of industrial wireless switching devices, e.g. position switches, foot switches and sensors, which use the sWave wireless protocol developed by steute and which are to be found in countless successful applications. These two technologies have now been combined. The belt alignment switch is connected to a separate RF I/O module. Via sWave, this transmitter unit passes on any signals arriving from the switch to a wireless receiver – reliably, without cables, and over outdoor distances of up to approx. 400 metres. Users can install additional repeaters for even longer distances. Two belt alignment switches can be connected to each RF I/O module, and each switching device transmits a two-level wireless signal. At the first level this could be a warning signal, while the second level could trigger a shutdown of the conveyor system.
New Ex solenoid interlock Ex STM 515
steute at the SOLIDS 2024 with new heavy-duty product series / robust, compact, Ex-compatible and with many optional features: new series of Ex solenoid interlocks
Sicherheitssensor Ex RC Si 56
Ex zone 1 and 21 Thermoplastic enclosure Suitable for the food processing industry Long life Reed contacts, coded Actuation from front Switching distance up to 6 mm With pre-wired cable Special version only for gas Ex zone 2 and dust Ex zone 22 available
Solenoid interlock Ex STM 295
Ex zone 1 and 21 Thermoplastic enclosure Wiring compartment Spring-to-lock or power-to-lock principle Two Ex switch inserts in one enclosure Double insulated Locking force 1000 N Actuator can be repositioned by 90° on request Special version only for gas Ex zone 2 and dust Ex zone 22 available
Position switch Ex ES/EM 98
With the ES/EM 98 Extreme series, steute has developed position switches with metal housings and normed dimensions in acc. with DIN EN 50041, suited to applications in extreme environments. Depending on user preferences and the sealing concept selected, versions are available in protection classes IP 66, IP 67 and IP 69K. A large temperature range from -40 °C to +90 °C further increases the potential of these new Extreme position switches. Users can choose from a large selection of actuators, and available switching inserts include a new contact variant with three contacts designed as a slow action or snap action contact with a positive break NC contact. A certified variant for use in explosive zones is now also available. The switching devices can be used in gas-Ex-zones 1 and 2, as well as dust-Ex-zones 21 and 22.