‘RGBF’ Precision Multi-Limit Switches and Inductive Multi-Proximity Switches
General information on mechanical multiple limit switches
Precision multiple limit switches are used for controlling and positioning in all areas of mechanical and systems engineering and for solving automation tasks.
The main advantages of these highly accurate and reliable positioning devices are:
- Minimum space requirements due to compact design
- Low-cost connection through the use of a common wiring cable
- Easy access to all switch stations for test and service purposes
- Easy installation
A range of housing versions, including DIN versions, are available to suit the full spectrum of application fields. A high standard of quality is always guaranteed in every installation position by the degree of protection IP 67.
Precision multiple limit switches possess several switching elements arranged in a row. The spacing between the individual switching positions of 12 mm and 16 mm is standardized in accordance with DIN 43697.
The range is completed with a particularly compact, space-saving version with a spacing of 8 mm.
The switching elements are actuated by means of plungers. This action is achieved with trip dogs in accordance with DIN 69 639, which are mounted with an interference fit in trip rails according to DIN 69 638.
Depending on the technical requirements in terms of switching point accuracy and approach speed, four functionally different plunger types (chisel, roller, ball and domed plungers) are used.
Depending on the plunger type, the reproducible switching point accuracy is ± 0.002 mm and the maximum approach speed is 120 m/min.
The precision multiple limit switches can be assembled with snap-action and safety switching elements, or also in combination with inductive switching elements. The mechanical life of the switching elements amounts to 30 x 106 mechanical operating cycles.
Using high-quality and proven acrylonitrile-butadiene rubber (NBR) for all seals and sealed areas. This material is resistant to oils, greases, fuels, hydraulic fluids and most known cooling lubricants.
Moreover, NBR possesses high mechanical rigidity over a wide temperature range and so it is perfectly suitable for the highly stressed diaphragm seal, which separates the plunger compartment and the interior of the switch.
The material used for the diaphragm seal is a key criterion for the quality, mechanical life and precision of the multiple limit switches. The same material is used for the cover seal and the cable entry.
General information on inductive multiple limit switches
Inductive multiple limit switches are used for positioning and control in all areas of mechanical and systems engineering. Inductive multiple limit switches are used for automation tasks in machines for the wood, textile and plastics industry, as well as for area monitoring for robotics.
Due to their non-contact and thus wear-free principle of operation, inductive multiple limit switches are insensitive to heavy vibration, heavy soiling and have an above average mechanical life even in aggressive ambient conditions.
Four different designs of inductive multiple limit switches are available for a very wide range of applications with 8 mm, 12 mm or 16 mm proximity switch spacing; these can be equipped with numerous inductive switching elements. In addition to these multiple limit switches, single limit switches according to DIN 43693 and the particularly compact ESN design are also available. With these versions a solution can be provided for almost every requirement.
Interchangeability with mechanical multiple limit switches and single limit switches means that it is possible to straightforwardly modify machines.
The switches can therefore be retrofitted on existing machine installations to take full advantage of the benefits of non-contact switches.
For safety-relevant end of travel limit switching, EMERGENCY STOP functions or other safety critical applications, it is possible to equip the multiple limit switches with a mixture of the necessary mechanical safety switching elements and inductive switching elements. You can combine the advantages of non-contact switching with positively driven NC contacts.
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