SUPREMATouch
222
Startup
MSA
US
- Single link: Exactly one condition has been set, and the value 1 has been selected as the
switching threshold.
- OR link: Several conditions have been set, and the value 1 has been selected as the switching
threshold. That is, the selected relay output is set when any one or more than one of the se-
lected conditions are fulfilled. It is possible in this way to configure a Common Alarm.
- AND link: The value set for the switching threshold is the same as the number of selected con-
ditions; that is, all of the selected conditions must be fulfilled before the selected relay output
is set.
- “n” out of “m” link: If m conditions have been set and the value n has been selected as the
switching threshold, the selected relay output is set when n out of the m conditions are fulfilled.
NOTE: After finishing the configuration, check the settings you have made for correctness and
plausibility to ensure that the alarms will be triggered reliably.
It is recommended that the relay output driver configuration be checked after the first calibration
and before the connection of alarm devices by supplying test gas to the sensors. In this way, the
functionality of the entire system is tested all the way from the sensor to alarm actuation.
NOTE: No input may be inhibited during the test.
The alarm configuration can also be checked at the sensors without test gas application by using
the sensor simulation modules.
Behaviour of the Relay Outputs
The behaviour of a relay output depends on the parameter setting of “new Alarm” or the alarm
settings “latching” or “non-latching”.
Non-latching alarm:
The signal is within the alarm limits:
- The output is at “normal” status.
The signal is outside the alarm limits:
- The output is permanently at alarm status.
Acknowledgement by pressing the ACKNL key:
- The output is at alarm status, unless the parameter setting is “new Alarm” (i. e. actual alarm).
- The output changes to “normal status”, if the parameter setting is “new Alarm”. If after 24 hours
the signal is still outside the alarm limits, the output changes again to alarm status and can be
acknowledged again.
The signal is no longer outside the limits:
- The output changes to “normal” status, regardless of whether the alarm has been acknowl-
edged or not.
For non-latching alarms, the RESET key has no effect.
Latching alarm:
The signal is within the alarm limits:
- The output is at “normal” status.
The signal is outside the limits:
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