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Datasheet RF5

Datasheet RF5
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Limit-value switch for frequency NORIS standard signal input 1 2 Straightforward application Suitable for severe operating conditions Compact construction Limit value freely adjustable by drum scale Anti-tamper seal for drum scale Frequency ranges to suit customer requirements Provision made for ﬁne adjustment of measuring range Meet high EMC-requirements Umgeb. Amb. Temp Temp: : Limit-value switches Volt-free output as normally closed contact or normally open contact Open-circuit or closed-circuit variants available Open-circuit devices with integrated push button to simulate an increased sensor signal for test functions 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 speed sensors are available (NORIS devices FA../ FT..) 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 RF5.. Description RF5.. • Designed to monitor a NORIS standard frequency signal In the case of closed-circuit devices, the output relay is pulled up in • Suitable to evaluate outputs of sensors of the FT.. and FA.. series the normal state of operation with the supply voltage applied. It drops • Factory-set maximum range frequency adjustment between 50 Hz off upon the limit-value being exceeded or if the supply voltage fails. and 10 kHz (maximum range frequency corresponds to 100 % of drum scale) • Trimming potentiometer for re-adjustment of measuring range In the open-circuit variant, the output relay pulls up when the limitvalue is exceeded with the supply voltage applied. Failure of the voltage will not result in any switching function below the limit value. • Limit value setpoint adjustable by means of drum scale from 5 ... 100 % • Lowest limit value: 50 Hz (RF500..), 100 Hz (RF501..), 1,000 Hz (RF502..) To avoid triggering errors the frequency full range set in factory must 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 be the highest frequency of the measuring chaine, the set point will be keeps activated even if the signal falls below the limit value afterwards. done in a ratio to the full range. The device has to be reset by disconnecting the supply voltage. Test function for open circuit devices The NORIS standard signal Open-circuit devices have an integrated test button for testing pur- The NORIS standard signal corresponds to a rectangular voltage poses. As long as this button is kept pressed, the preselected limit value with an amplitude that corresponds to the supply voltage applied. This is decreased by abt. 15%. This enables safety functions, such as an results in a signal that is immune overspeed trip to be tested without running the machine in the critical siderable changes in the supply voltage. The supply voltage reVolt-free relay contact, closed-circuit or open-circuit version A volt-free relay contact is provided as a normally closed or normally open contact for outputting and further processing. In addition, quired by the sensor is provided L there is a choice between clos

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Other Data Series RF5.. Type key / variants Connection NOC RF5..-.2 Device codes Limit-value switch Relay position Input signal F Frequency input for NORIS standard signal (sensor series FT / FA) Type series 5 Type 5 x = contact closed - = contact open (*) = Latching function: as -A1, but relay keeps open until Us is disconnected (**) = Latching function: as -A2, but relay keeps closed until Us is disconnected The red LED is illuminated, if the limit value is exceeded Input range fB / upper-range frequency fE / limit value fS 00

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