Description

Active barrier with power supply for safe separation of 4...20 mA current circuits The active barrier RN221N supplies e.g. a transmitter with power, if required also in the Ex-area, and then transmits the galvanically isolated signal. With the optionally available HART® monitoring the status of the transmitter is monitored. If an error arises a relay at the RN221N sends an alarm. The relay has to be actively set back. Thus even just briefly occurring errors can be easily located.
  • Benefits
    • Wide range power supply, flexible power source
    • Compact side by side DIN rail housing
    • International Ex approvals, marine approval
    • Bidirectional HART® transmission. Communication sockets for HART® sensor setting up. Evaluation of status information from...
    • Wide range power supply, flexible power source
    • Compact side by side DIN rail housing
    • International Ex approvals, marine approval
    • Bidirectional HART® transmission. Communication sockets for HART® sensor setting up. Evaluation of status information from connected transmitter with HART® protocol.
    • Primary or secondary master operating mode, automatic selection
    • Sensor monitoring with early-warning system
    • Manual or automatic reset of the relay contact
  • Field of application
    • Galvanic isolation of 4 to 20 mA current circuits
    • Removing large loop circuits
    • Powering 2 wire transmitters
    • Monitoring of SMART transmitters with early-warning system
    • Intrinsically safe sensor supply for Ex-area
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