RN221N Active barrier with optional HART® diagnosis

Field of application

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.

• 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

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

• Measuring principle

  Active barrier

• Measuring principle

  Power supply

• Function

  Active barrier with power supply for safe seperation of 4...20 mA current circuit

• Loop power supply

  20...250 V DC/AC

• Auxiliary power supply / Loop power supply

  20...250 V DC/AC

• Input

  1 x analog 4...20 mA

• Output

  1 x analog 4...20 mA

• Certificates

  ATEX II (1)GD (Ex ia) IIC
  FM AIS I,II,III/1/ABCDEFG1
  CSA (Ex ia) I,II,III/1/ABCDEFG1
  IECEx (Ex ia) IIC
  NEPSI (Ex ia) IIC
  JPN (Ex ia) IIC
  EAC (Ex ia) IIC

• Operation

  HART