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© 2022 All rights reserved. Data subject to change without notice.
FCS - Operation Manual
Rev. C | 2022.02
RLY-). So there will be a relay number 1 in the FCS and a relay number 1 in the RLY-4, for
example.
NOTE:
If you are configuring the internal or terminal connected STROBE, HORN or AUDIBLE
it is best not to change the Modbus ID or the Relay No that was assigned at the factory.
Enabled/Disabled:
To enable a channel, press the button to turn it green and the word
Enabled will be displayed. To disable a channel press the button so it is white and the
word Disabled is displayed. A disabled channel will show on the normal display with a “d”
at the end of the line, unless the line has been removed from showing on the display.
NOTE:
A disabled relay acts as if it does not exist therefore it will not be triggered by any gas
or priority event.
Latching/Not Latching:
A latched relay is a relay that has triggered an event/it is active
and it will remain so until it is manually cleared/turned off. To enable relay latching, press
the button to turn it green with the word Latching displayed. To disable relay latching,
press the button to turn it white with the words Not Latching displayed.
NOTE:
If the relay latching has been enabled, the relay will not un-trip until the cause of
tripping (alarm level, time of day, etc.) has cleared AND the Clear Latched button is pressed
on the Relay Status bar details. For more information, refer to Section 8.4 How to Clear a
Latched Relay.
Silencing/Not Silencing:
If you would like to silence the channel of the internal audible
buzzer, a terminal connected strobe or horn or a remote strobe or horn, press the button
so it is green and with the word Silencing displayed. To not use the silencing feature,
press the button so it is white with the words Not Silencing displayed.
NOTE:
Any relay defined with the silencing functionality will respond to the Silence ? button
activity. Meaning if a relay that controls a fan is set to Silencing, when the relay is triggered,
the Silence ? notification will appear and if you press Yes, the relay (the fan) will be turned off,
“silenced”. Therefore make sure the logic behind the setting is appropriate.
Failsafe/Normal:
The FCS is designed to be fail-safe so the relay is energized in a non-
alarm state for failsafe operation. When the channel has been set to trigger in a failsafe
mode, the button will be green and the word Failsafe will be displayed (this is the factory
default). If required, the FCS can be configured for normal relay operation by choosing
Normal. When a channel is set to trigger in a normal mode, the button will be white and
the word Normal will be displayed.
NOTE:
The flexibility built into configuring relays may allow parameters to be set that don’t
make a lot of sense. The system does not stop you from setting nonsense combinations
such as enabling latching and silencing on the same relay or setting a time of day priority
tripping a relay that is defined to be latching. Make sure the logic behind your settings is
appropriate.