VESDA LaserCOMPACT, Руководство по эксплуатации продукта

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VESDA
® LaserCOMPACT Product Guide
15
Note: UL Specs: To meet UL specifications, any alarm thresholds that initiates an
evacuation procedure via a Fire Alarm Panel must not be set higher than 2% obs/m
(0.625% obs/ft.)
Relay settings and conditions to change states
Table 4 - Default relay settings and conditions to change state
Auxiliary / GPI Terminals
The Bias, Reset (GPI) and LED terminals are located on the termination card (Refer to
Figure 14,
“LaserCOMPACT termination card VN Model (VLC-505),” on page 19 and Figure 15,
“LaserCOMPACT termination card RO Model (VLC-500),” on page 20. These terminals have the
following functions:
Bias Terminals: These output terminals provide 10 VDC supply to initiate the reset input
terminals via a remote reset/isolate switch.
LED Terminals: These output terminals provide a 5 V, 15 mA DC supply via a 220 ohm resistor
to power a remote LED.
Reset (GPI) Terminals: These terminals are also known as the General Purpose Input (GPI)
and are used for Reset, Mains OK or Standby functions. The input terminal requires a voltage
supply between 5 V and 24 VDC to operate. The voltage input to this terminal is isolated from the
system by an opto-coupler device. Connect the Reset (+) terminal to the positive output and the
Reset (-) terminal to the ground output of the external device (for an example of use refer to
Figure 21,
“Wire connection details for power terminals on VN and RO model termination card,”
on page 24).
Relay # Relay Condition for relay to change state
1 Fault This relay is de-energized when one of the following conditions occur:
Fault found on detector or on VESDAnet loop
Air flow normalization is initiated
System isolation is initiated
When the Overlay Alert function has been selected, this relay is de-
energized once the Alert Threshold is initiated
2 Pre-Alarm This relay is energized once the Pre-Alarm threshold is initiated
3 Fire This relay is energized once Fire Alarm threshold is initiated