Function - Endress+Hauser Rns 221 Bedienungsanleitung

2 Function

The unit delivers two galvanically isolated voltages of 24 V DC. The
maximum current supplied, per output, is 30 mA. The outputs are
electronically monitored. The output voltage is stabilised to 24 V ± 10%,
current is limited to 38mA on short circuit.
For communication with connected sensors using the HART
each power supply circuit is fitted with an unit internal communication
resistance of 250 W. The HART
connected to the front mounted communication sockets (2 mm).
LEDs in the unit front panel indicate the unit operation mode:
q Green LED illuminated:
The unit is connected to the power source and is operational.
q One or two yellow LEDs illuminate:
The power supply to the connected component(s) is on.
®
communication module can be
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protocol,
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