Ampcontrol gasguard, Инструкция по установке, эксплуатации и обслуживанию

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GASGUARD IS CONTROLLER Issue: R2, Date: 26/09/2011, CRN: 7502
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2.6.2 Adding Input Alarm set-points to a Zone Block (Refer to Zone Functional Diagram in appendix A )
A Zone Block groups together alarm set-point signals and ‘maps’ them to selected relays. A Zone Block input can be
any or all of the alarm set-point signals from any/all input channel (a max. total of 20 set-points). A set-point can be
configured to be included or not included in a Zone Block’s input. Included alarm set-point signals are effectively
‘OR’ed’ together, such that any active set-point may potentially operate a relay.
Note: A set-point, even if active, is ignored if it is not included in a Zone Block input.
2.6.3 Adding Relays to Zone Blocks (Refer to Relay Functional Diagram in appendix A)
Any or all of the four relays may be included in a Zone Block’s output. Including a relay into a Zone Block output,
maps it to the selected alarm set-points at the Zone Block’s input. A relay may be included in any one, or all of the
six Zone Blocks simultaneously.
Note: If there are no relays selected in any of the six Zone Blocks, then the Controller will not indicate alarm
states via the relays.
A relay may be set to be ‘ON’ or ‘OFF’. If a relay is set to ‘OFF’ it cannot be activated irrespective of other settings
within the relay configuration menu, or via any conditions set within a Zone Block.
Relays may be set to be on, off, in or out of a Zone Block via the relay configuration menu.
2.6.4 Zone Voting
The Zone Voting function allows the operator to select the number of active, included set-points that are required to
activate an included relay. In total there are up to 20 alarm set-points that can be included in a Zone Block’s input,
and accordingly, the vote number can be set from 1 to 20.
Note: The vote count value is important since it controls the logical behaviour of the included relay.
If a vote count of 1 is set, then the set-point signals are effectively ‘OR’ed’ together and any included set-point will
potentially activate the included relay.
If the vote count is set equal to the number of included set-points, then the logic effectively becomes an ‘AND’
function. Under this condition a relay will only be activated when the number of active set-points is equal to, or
greater than the vote count. Single set-points becoming active, or multiple active set-points below the vote count will
not activate an included relay.
The vote count does not allow for specific set-points to be included in the number that must be active. Any set-point
from any channel will be considered in the comparison. For example, if 12 set-points are included and the vote count
is set to 5, any 5 of the 12 set-points will potentially activate an included relay.
2.6.5 Zone Active Status
A Zone Block may be set to be inactive, irrespective of included set-points and relays. A Zone block that is set to
‘OFF’ will not allow its included relay to be activated via the included input set-points. A relay included in a Zone
Block that is set to ‘OFF’ may still be activated if it is included in another Zone Block that is set to ‘ON’.
Example Settings for a Zone Block (Refer to Section 4 for nomenclature relating to Controller settings ).
Alarm Set-Point inclusion is made in the Zone configuration menu.
Relay inclusion is set via the Relay configuration menu.