VESDA
®
LaserFOCUS VLF-500 Product Guide
11
Extra terminals (Terminals 3, 4, 5, 6 & 7)
Terminals reserved for future use.
Figure 11 - Terminal block display, spare power terminals
Power supply (Terminals 8, 9, 10 & 11)
It is recommended that the power supply be compliant with local codes and standards required
by the regional authority. For code-specific information, see
Codes and Standards Information for
Air Sampling Smoke Detection
on page iv.
Caution:
Check the product termination wiring label during installation and subsequent
maintenance visits.
Figure 12 - Terminal block display, power supply
Operating voltage:
24 VDC nominal (18 - 30 VDC)
Power consumption:
9.8 W nominal, 11.7 W in alarm
Current consumption:
410
mA nominal, 490 mA in alarm
Legend
3
Display Tx
4
Display Rx
5
Display Comm Gnd
6
Display Power -
7
Display Power +
Legend
8
Power Return 0 VDC
From power supply unit
9
Power in 24 VDC
10
Power Return 0 VDC
To next detector (if more
than 1 detector per Power
Supply Unit)
11
Power Out 24 VDC