IDR-M Mimic Installation & Commissioning Manual
Appendix 2 - Batter
y Calculations
A2 - 1
997-412-000-3, Issue 3
June 2005
Appendix 2 - Calculating Battery Requirements
Control PCB
If operated from a permanently boosted supply (24V min.):
85mA
If operated direct from batteries (18V min.):
90mA
Each Mimic Driver PCB:
10mA
Each LED on a partially-loaded Driver PCB:
If operated from a permanently boosted supply (24V min.):
3.4mA
per LED (to a maximum of 190mA)
If operated direct from batteries (18V min.):
4.4mA
per LED (to a maximum of 225mA)
The current per relay is given on the data sheet for the chosen
relays. When relays are powered from the fire control panel, their
current should be considered when calculating the panel’s battery
size. When relays are powered from an external PSU, their current
is not supplied by the Mimic Driver PCB, therefore the maximum
current is limited by the PSU.
Note:
Lamp test illuminates all LEDs so provision must be made to
power all LEDs which are fitted even if the Control Matrix will
not illuminate all LEDs during normal operation.
Quick Guide (assuming ALL LEDs are fitted):
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