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About the interfaces
Power terminal
The power terminal has two independent inputs, +Voltage A and +Voltage B. These
have been included to support redundancy should either of the two fail. The DNX R-
2F/FC power supply is galvanically isolated from all other internal electronics.
RS-485 interface
Two connectors with three-position detachable screw terminals support the
connections for the 4 port 2 wire RS-485 system.
Optic Fibre interface
A pair of LC type connectors support the optic fibre interfaces.
Earth terminal
The earth terminal provides a surge path for transients on the Port A circuit.
Relay terminal
The relay may be used to trigger an external alarm under fault conditions. When
configured as outputs, the relay contacts are held open under power and during normal
operation. The relay output circuit can be used as a normally closed relay contact to
support a failsafe mode of operation.
During a power failure the relay contacts open to indicate a fault.
Note: A power failure condition with a simultaneous failure of PSU1 and PSU2, will only
be identified by the relay state and not reflected on the LED indication.
33
Man-1492
DNX-R-2F/FC-K
Содержание DNX-R-2F-K
Страница 36: ...Figure 18b Passive Mode Settings and Dual Port CIE with Hybrid Connections 36 Man 1492 DNX R 2F FC K...
Страница 38: ...Figure 20 iNS LED Indication 38 Man 1492 DNX R 2F FC K...
Страница 39: ...Figure 20a iNS LED Indication 39 Man 1492 DNX R 2F FC K...
Страница 40: ...Notes 40 Man 1492 DNX R 2F FC K...
Страница 41: ...41 Man 1492 DNX R 2F FC K...
Страница 42: ...42 Man 1492 DNX R 2F FC K...