RN221N - Active barrier with optional HART® diagnosis
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
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Wide range power supply, flexible power source
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Compact side by side DIN rail housing
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International Ex approvals, Germanischer Lloyd / marine approval
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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
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Manual or automatic reset of the relay contact
Field of application
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Galvanic isolation of 4 to 20 mA current circuits
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Removing large loop circuits
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Powering 2 wire transmitters
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Monitoring of SMART transmitters with early-warning system
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Intrinsically safe sensor supply for Ex-area
Technical information
| Measuring Principle | Resistance Temperature Detector | |
| Function | Active barrier with power supply for safe seperation of 4...20 mA current circuit | |
| Certification |
ATEX II(1)GD(Ex ia)IIC FM USA IS FM USA NI CSA IS CSA NI IECEx Ex ia TIIS Ex ia GOST Ex i GL ship approval SIL Hygenic WHG |
|
| Input | 1 x analog 4...20 mA | |
| Output | 1 x analog 4...20 mA | |
| Relay output | 1 x no contact | |
| Auxiliary power supply / Loop power supply | 20...250 V DC/AC | |
| Dimensions (wxhxd) |
22.5 x 110 x 112 mm (0.89" x 4.33" x 4.41") |
|
| Operation | HART | |