Catalog excerpts
Limit-value switch, input direct current 1 Straightforward application Suitable for severe operating conditions Compact construction Galvanic isolation of the input and Schaltb Switch.R ereich: ange: Umgeb. Amb. Temp Temp: : output signal to the supply voltage • Anti-tamper seal for drum scale Limit value freely adjustable by drum scale Limit-value switches Meet high EMC-requirements requirements Volt-free output as change over switch contact Open-circuit or closed-circuit variants available Short circuit and broken-wire monitoring with live-zero devices Operating characteristics displayed by integrated LEDs Flame-inhibiting and self-extinguishing body 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 RI5.. Description RI5.. • Designed to monitor a direct current Volt-free relay contact, closed-circuit or open-circuit version A volt-free relay contact is provided as a change over switch • Devices from 0 ... 20 mA without live-zero-monitoring contact for outputting and further processing. In addition, there is a • Devices from 4 ... 20 mA with live-zero-monitoring choice between closed-circuit and open-circuit devices. • Limit value settings possible over complete input range by means of drum scale 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. Integrity and short-circuit monitoring of input signal In the open-circuit variant, the output relay pulls up when the The integrated signal monitoring of the live-zero device provides limit-value is exceeded with the supply voltage applied. Failure of the monitoring of the sensor signal for broken wire and short circuit. If the voltage will not result in any switching function below the limit value. measured signal falls below the limit at approx. 2 mA, the relay will operate. The red LED will light up and the green LED will be flashing. Limit-value switches with 0 ... 20 mA input are not available with broken-wire and short-circuit ala
Open the catalog to page 1Other Data Series RI5.. Relay position Type key / variants RI5..-A Input range: x = contact closed - = contact open The red LED is illuminated, if the limit value is exceeded R Limit-value switch Input signal I [Direct current Type series 5 Type 5
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