Appendix B: Power Calculations - Fire-Lite MS-4012 Instruction Manual

Appendix B: Power Calculations

NOTE: The LED Interface (40xxLI) does not consume any power and can be ignored when calculating power
requirements. In addition, the General Alarm and Trouble Module (40xxAT) does not consume power during
trouble and the RZA-4 consumes nothing in alarm.
Basic Control Panel
(AC Power off - System trouble LED on and audible trouble
sounder activated - includes indicating supervisory current)
If using a Zone Relay Module:
If using a Transmitter Module (40xxTM), add 5 mA
If using the Reverse Polarity Alarm output, add 10 mA
If using the Reverse Polarity Trouble output, add 10 mA
If using a Remote Zone Annunciator (RZA-4), add 8 mA
Unregulated, Auxiliary power (draw from Terminals 18 & 19)
a. Two-wire detector heads
b. Four-wire detector heads
c. End of Line Relays
d.
28
Table 1: Standby Battery Requirements
4012ZR, add 8 mA
or 4024ZR, add 16 mA
Number
in
use
X
X
X
Add lines a, b, & c for subtotal
Add last column for Standby Battery Current :
15586 Rev E
Current Total
Per Device
Device Current
0.1 mA =
0.15 mA =
25.0 mA =
Place subtotal here
5/14/93 P/N 15586:E
79.2 mA