Plura RUB VI, Дополнение к руководству по установке и системам

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Functional Description and Specifications RUB VI
Page 14
2.3 Signal Changeover
With the default set- up (“Factory Settings”), the changeover relays operate in the automatic
mode. After the power has turned on all the relays have their contacts open.
Utilizing the
Distribution function with one of the configuration tools, you can switch between
automatic and manual changeover. In the manual mode you can open or close the contacts
at will. Regardless of automatic or manual mode not more than one changeover each second
will be allowed. Each relay can individually be set into one of the following modes:
Changeover Relay Auto
Open
Close
Auto
•
After the power has turned on the monitor accepts a three minutes warm-up period of the
signal source. If no input signal can be detected during this time, an error will be
indicated but no alarm will be raised. After this period or after once a signal has been
detected the monitoring and changeover procedure starts.
Display at status monitor: “ input signal status OK/ time-out / data error “
“ input signal received yes/ no “
•
An error at the spare output stage will not affect the changeover relays.
•
The changeover relay will open its contacts if no error can be detected at both the spare
output and the corresponding channel output stages.
•
The changeover relay will close its contacts if the spare output stage has no fault, but the
corresponding channel output fails, provided that the maximum number of simultaneous
changeover switching has not been reached.
Max. Simultaneous Changeover Switching : If several output stages have a failure and
the corresponding changeover relays close their contacts, the spare output stage will drive
all these output channels. This set-up restricts the simultaneous changeover switching to a
maximum value ( 1 to 6 ).
Display at status monitor: “ number of activated changeover relays 0 – 6 “
Manual modes: Open or Close
• The automatic mode is switched off.
•
The relay is forced to open or close its contacts regardless of any signal status and
regardless of the maximum number of simultaneous changeover switching.
The status monitor informs about the last changeover
Please refer to chapter “System Status“ for details.