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Delphian - Model VAM -Voting Alarm Module
A VAM provides a relay contact transfer when a specified minimum number of individual alarms occur in a zone. This "auxillary" relay is field selectable to be automatically or manually reset. Manual reset is done with a button on the VAM front panel or with a remote reset switch. A typical application is to avoid costly tranxient alarms by requiring a "vote" of two or more independent individual alarms before an expensive action is initiated (eg a halon dump or plant shutdown).
ZAMs save installation cost. No wiring is required to use ZAMs with the Flexirack mounted Delphian gas monitoring systems. External inputs require only a dry contact and a series resistor.
ZAMs provide special funcation contact outputs based upon the alarm status of one or more monitoring points in a zone. A zone is a user-designated group of points which could be:
- Up to 15 gas detection channels in a Delphian Flexirack
- External monitoring inputs (contact closures). These could be flame, smoke, or heat detectors.
- Any combination of both.
ZAMs can share a Flexirack with up to 15 gas detection controllers. They are field adjustable to monitor low, high and/or fail alarms from controllers in the rack, and/or contact closure inputs from other sources. Alarm relay outputs remain available from individual channels of Micro controllers even when ZAMs are used.
No external wiring is required to use ZAMs with Flexirack mounted Delphian gas detection systems.