RW5
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Catalog excerpts

Limit-value switch, input AC-voltage 1 2 Straightforward application Suitable for severe operating conditions Compact construction Limit value freely adjustable by drum scale Meet high EMC-requirements Umgeb. Amb. Temp Temp: : Anti-tamper seal for drum scale Schaltber Switch.Ran eich: ge: Limit-value switches Volt-free output as change over switch contact or make-contact Open-circuit or closed-circuit variants available Test function to simulate an increased sensor signal without critical machine loading Optionally with latching function (only open circuit devices) Operating characteristics displayed by integrated LEDs Flame-inhibiting and self-extinguishing body Suitable sensors are available (NORIS GE.. devices) Limit-value switches of series 5 Limit value switches of the series 5 are designed to monitor and process electric measured variables. Working principle: When the actual value of the measuring signal supplied reaches the setpoint, the built-in relay will operate. The switching status of the relay contact may, for instance, be monitored or individually processed by a machine controller. General notes on Type RW5.. Description RW5.. • Designed to monitor an alternating voltage • Various devices available for optimal matching to input signal • Limit value settings possible over complete input range by means of drum scale Volt-free relay contact, closed-circuit or open-circuit version Test function for open circuit devices The Types RW5..-S have the integrated special functions testing and latching. The Types RW5..-A2 have only the special function testing. The testing function offers while the contacts 2 and 5 are connected, the limit-value signal selected on the drum scale is lowered by about 15%. In a speed monitoring application, this means that an overspeed condition can be simulated within the normal range without running the machine in the critical range. A volt-free relay contact is provided as a change over switch contact for outputting and further processing. In addition, there is a choice between closed-circuit and open-circuit devices. In the case of closed-circuit devices, the output relay is pulled up in the normal state of operation with the supply voltage applied. It drops off upon the limit-value being exceeded or if the supply voltage fails. Latching function for open circuit devices Open circuit devices can optionally be equipped with a latching function (see type code). When the limit value is exceeded, the relay keeps activated even if the signal falls below the limit value afterwards. The device has to be reset by disconnecting the supply voltage. In the open-circuit variant, the output relay pulls up when the limit-value is exceeded with the supply voltage applied. Failure of the voltage will not result in any switching function

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Technical Data Other Data Input range Relay position Device codes x = contact closed - = contact open (*) = Latching function: as -A2, but relay keeps open until Us is disconnected The red LED is illuminated, if the limit value is exceeded R Limit-value switch Input signal W |AC-voltage Type series 5 Type 5 Input range NORIS Automation GmbH Muggenhofer Strasse 95 90429 Nuremberg Germany Version 01.04: 07/2014 Changes reserve

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