TSGR-21 GAS Release Panel User Manual
Vighnaharta Technologies Pvt. Ltd. Page
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4.5 RAC Operation
4.5.1 Auto Mode Operation
By using Key Switch you can select Auto Mode .Remember without key you cannot change the mode.
Whenever there is fire alarm condition in any zone, depending upon RAC configuration, pre release timer for the
particular RAC starts automatically and system enters into pre release condition. RAC releases when pre release
time is over. This is RAC released condition. Remote release action overrides pre release time and starts remote
release timer after remote release time finishes RAC releases instantly. Similarly RAC release action is aborted by
manual or remote action.
For example, RAC: Assigned for Zone1 & Zone2 Cross zoned and auto released.
The system operations are given as below.
•
Pre Release1 LED turns OFF and Release LED turns ON.
•
Remote Release LED OFF in no action.
•
Abort1 LED OFF.
•
If main cylinder is selected then Main RAC Released else or Standby RAC Released message shows on LCD.
•
All events are stored in memory.
•
System latches these indications till system reset.
•
Other LED indications retain their status.
•
After RAC ON time, RAC output activates the relay continuously.
•
RAC relay restores the status after system reset.
4.5.2 Manual Mode Operation
By using Key Switch you can select Manual Mode .Remember without key you cannot change the mode.
In the system user can only make RAC release by external release MCP. By pressing External Release MCP
(Manual Release) Manual pre release Timer gets activated and after timer finishes RAC release.
LCD and LED indicate as shown below.
For Example: To do manual RAC Release Press External MCP.
Note
: The option display timer starts, after time up, it goes back to normal display. If pre release time is
already started, it displays the time.
The system takes the following actions if RAC is released manually.
•
All events stored in memory.
•
Pre Release LED turns OFF, Manual Release LED turns ON.
•
Abort LED OFF.
•
Released LED turns ON.
Z1:Fire Z2:Fire
Evt: Main RAC release
Z1:Fire Z2:Fire
11/03/20 17:57