Xtralis VESDA VLC-400, Руководство по эксплуатации продукта

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VESDA VLC-400 Product Guide VESDA by Xtralis
12 www.xtralis.com
2.4.8 Event log
A historical log of the most recent 10,240 events occurring within the system is stored in the detector’s
permanent memory. These events can be viewed using the Xtralis VSC software supplied with the detector.
Note: The Fault LED remains illuminated while the RS232 cable is connected and Xtralis VSC active. At
the same time the fire panel sees the detector in a fault condition until Xtralis VSC is removed.
2.5 Communications with Apollo Protocol
2.5.1 Detector configuration
The VESDA VLC-400 operates on the Apollo Loop using the standard protocol and is compatible with XP95
and Discovery FACP's. An Apollo Loop can have a maximum of 126 VESDA VLC-400 detectors.
The VESDA VLC-400 is configured using Xtralis VSC software on a PC connected to the detector’s DB9
connector on the termination card.
2.5.2 Types
The VESDA VLC-400 detector can be reported as one of two types, aspirating (152) or optical (160). The
default type setting is aspirating (152). The detector type is selectable via Xtralis VSC.
Feature Aspirated Type Optical Type
Smoke Analog Value 11 to 127 (Alarm at 55) 23 to 127 (Alarm at 55)
Fault Analog Value <8 (8 to 10 not used) < 8 (8 to 22 not used)
Drift Value 0 16
Type Bits 2 1 0 4 3 7 6 5 2 1 0 4 3 7 6 5
1 0 0 1 1 0 0 0 1 0 1 0 0 0 0 0
Table 2-2: Bit Types for Aspirated and Optical Type VESDA VLC-400
The differences between the two types relates to the nominal non smoke signal and the setting of the drift
value as indicated in Table 2-2. Discovery type devices are allocated a specific device type by Apollo that is
set as a constant value (i.e. a 3 bit type code) that is reported back to the fire panel.
2.5.3 Protocol Compatibility
The VESDA VLC-400 operates on the Apollo Loop using the XP95 or the Discovery protocol.
2.5.4 Protocol BIT Usage
The VESDA VLC-400 uses a 3-bit message to communicate:
l
Bit 0 = Remote LED/Relay
1
l
Bit 1 = Self Test
l
Bit 2 = Fire LED
The Output bits initiate an action/status message while the Input bits provide confirmation of the respective
action
1
The Xtralis VSC software can configure the Remote LED/Relay to follow Bit 0 or Bit 2. If the LED/relay
signal (bit 0) is intended for the operation of a remote LED, many FACP’s limit the number of remote LED’s
that may be illuminated in order to minimize the alarm current. If in doubt, please contact the fire control panel
manufacturer.