RN221N
Active barrier with optional HART® diagnosis

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 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

Predecessor

·         RN221

·         NY9170

·         HAA420Z