VESDA
®
LaserPLUS Installation Manual
Version 1.5 3
2. Cabling Requirements
The terminals on the termination card in the LaserPLUS will accept wire sizes up to 2.5sq
mm (12 AWG).
2.1 Power Cables
Use the power ratings for the detector and the modules to determine the required wire
sizes. Refer to table below for power ratings.
2.2 Power Consumption
The power requirements for the detector to operate are as follows:-
Operating voltage:
18 VDC to 30 VDC
Power Consumption (W)
@ 24VDC
Current Consumption (mA)
@ 24VDC
Quiescent With Alarm Quiescent With Alarm
LaserPLUS with Blank
Plates @ 3000rpm
5.76 6.24 240 260
LaserPLUS with Blank
Plates @ 3500rpm
5.76 6.24 240 260
LaserPLUS with Blank
Plates @ 4000rpm
6.48 6.96 270 290
LaserPLUS with Blank
Plates @ 4200rpm
6.72 7.20 280 300
Programmer Module
1.08
(Backlight Off)
1.44
(Backlight On)
45
(Backlight Off)
60
(Backlight On)
Display Module Only 1.44 2.64 60 110
Table 1 Power and Current Consumption for LaserPLUS Detector and Modules
2.3 Data Cables
The recommended RS 485 data cable for interconnecting to other detector units on the
VESDAnet loop is Belden 9841 (or equivalent). The cable characteristics are as follows:-
• 24 AWG, Twisted pair, Shielded, 120 ohms impedance
The maximum specified length for the RS485 cable between any two devices on
VESDAnet is 1300m (4000ft).
To Next Page
Loading...
