Page 98
490X Engineer’s Reference Guide
Custom Screen
Maximum Output Current
Log Size
Time & Date
Non-Volatile Memory
Quiescent Currents
Control Panel plus Keypad
32 Characters
1A* (See Power Supply Rating)
250 Event Log
31 Event Modem Log
Log & Display
Yes
150mA@12V d.c
*Power Supply Rating
It should be noted that the 490X has 1 Amp available for the full system. However, for
the purpose of compliance to EN and PD6662 standard, the capacities of the power
supply have to be specified differently.
For a Grade 2 system you have 72 hours to charge the battery. With the 490X Control
Panel, 90mA is available for battery charging. This defines a theoretical maximum
standby battery capacity of 8.0Ah and a maximum of 666mA available for system
power. If a smaller capacity battery is used then the rating has to be reduced
accordingly. For example: If a 7Ah battery is used it will recharge in 72 Hrs and will
theoretically provide 910mA (1000-90mA) for the system. However, the supply rating
for that system under PD6662 is still 7.0Ah/12hrs = 583mA. Sounders, detectors and
other auxiliary items should be included when calculating current drawn by the system.
Any damage caused through overloading the Control Panel Supply will not be covered
by the warranty
We recommend that additional power supplies are used to supply detectors on long
cable runs.
490X 1.qxd 11/07/2006 12:32 Page 98
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