VESDA VFT-15 Product Guide
VESDA by Xtralis
24
www.xtralis.com
5.2
User Functions
User functions associated with some configuration and control buttons are described in this section. For more
information on setup and configuration, refer to Chapter 5.
Function
Access Level
Description
ACCEPT
None
Acts only on the internal sounder. Acknowledges all current Alarm states.
All other warning mechanisms continue unchanged. Sounder operation
changes from continuous to 1 second ON: 15 seconds OFF. New Alarm
events cause the sounder to revert to continuous operation.
SOUNDER
SILENCE
Operator
Acts only on the internal sounder. The Sounder is switched off until one or
more new Alarm events.
RESET
Operator
Clears all latched Alarms and Faults. Current Alarms or Faults will remain.
ISOLATE
Operator
Used when diagnosing faults, testing new installations, et cetera. All alarm
relays are disabled, so that Alarm conditions will not be reported back to
the Host Panel. The Isolate button toggles the unit between Isolated and
Normal operation, as shown by the Isolated indicator, but see note below.
Notes:
l
If the unit is isolated then returned to the Normal, Locked state (by
pressing the
MENU
button) the Operator will need to re-enter
Operator Access Code in order to cancel the isolated state.
l
If a power cycle is applied to the detector the detector will not
remain in an isolated state.
l
The Sounder and alarm LED indicators will operate as normal.
l
The fault relay will indicate a fault condition while the detector is
isolated.
TEST
None
Successive presses of the Test button show:
1. Date on the Status Display
2. Time on the Status Display
3. IP address on the Status Display
4. Subnet net mask on the Status Display
5. Media Access Control (MAC) address on the Status Display
6. All LEDs on the panel and LED segments on the Status Display
and the Sounder operates.
7. Normal display
The TEST button does not operate when the detector is in an unlocked
state.
SCAN
None
Initiates a scan of the sectors in the detector.
If the Scan button is pressed once, it will start by scanning the 1st sector for
60 seconds, then scan subsequent sectors for a time set by the MIN
DWELL parameter. The STOP LED indicator flashes during this time.
Subsequent presses of the Scan button will advance the scan to the next
adjacent sector, where it will scan the sector for 60 seconds, then continue
scanning subsequent sectors for the time set by MIN DWELL.
Table 5-2: Description of User Functions for the Display Panel
The VFT detector can also be reset remotely by applying 24 VDC to the remote reset input on the Main I/O
PCB (refer to Section 3.2).
Note:
When the Operator Access Code is entered (default = 0), the Sounder Silence, Reset and Isolate
user functions are enabled and the unit is placed in the Unlock state, as shown by the flashing
Unlock indicator. If the unit is isolated, then returned to the Normal, Locked state (by pressing the
Main Menu button) the Operator will need to re-enter Operator Code in order to cancel the Isolated
state. If any button is not pressed to lock the panel the unit will self-timeout and lock in 5 minutes.
