SILENT KNIGHT SK-5208 Specifications download pdf (Page 71)

Operation 151204

5-6

5.5.2 Double Interlock Releasing Operation

A typical double interlock releasing system would be programmed with a minimum of two zones selected for

“Cross Alert A”, one zone selected as “Man. Release A”, and one selected as “Interlock A”. Additional zones

can be selected as Cross Alert or Manual Release.

This double interlock system requires both cross alert and manual release verification zones. A single manual

release and interlock zone can be used without any cross alert zones. In this system configuration an active

manual release and the interlock zone is required to initiate the release.

Table 5-5 illustrates what will cause a Pre-alert, General Alarm, and a Release.

If no zones are selected for “Interlock” verification then the system will operate as a standard cross alarm

releasing system (see Section 5.5.1).

See Section 5.5.1.1 for default NAC settings for releasing systems.

5.6 Smoke Alarm Verification

Figure 5-6 illustrates how the Smoke Alarm Verification cycle operates.

Figure 5-6 Smoke Verification Cycle

During the Confirmation Period if there is no alarm indication then the system will return to normal operation.

Table 5-5: Double Interlock Operation

Inputs Output Results

Cross Zone 1

XXXXXXXX

Cross Zone 2

XX XX XX XX

Manual Release A

XXXX XXXX

Interlock

XXXXXXXX

Normal

Pre-Alert

General Alarm

Release and General Alarm

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 101 102

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SILENT KNIGHT SK-5208 Specifications Page 71