FireClass FC506 - Page 86

Table 65: Current distribution of FC503 control
panel
FC503 control panel
Switching Power Supply BAQ140T24 (Imax = 5.5 A)
IBattery_Charge_80%_24H =
(12*0.8)/24 = 400 mA
IFor_panel = 5500 - 400 = 5100 mA
Panel Load Distribution
IMain_Board_Electronics = 250 mA
ITotal_Loops_1_2_3 (*) = 800 mA
@40V (1300 mA @27V)
ITotal_Outputs (***) = 3300 mA
IFC500IP = 100 mA (****)
IResidual = 150 mA
12 Ah
Battery
IBattery_Charge_80%_24H =
(12*0.8)/24 = 400 mA
IBattery_Charge_80%_24H =
(17*0.8)/24 = 566.66 mA -> 600 mA
IFor_panel = 5500 - 600 = 4900 mA
Panel Load Distribution
IMain_Board_Electronics = 250 mA
ITotal_Loops_1_2_3 (*) = 800 mA
@40V (1300 mA @27V)
ITotal_Outputs (***) = 3100 mA
IFC500IP = 100 mA (****)
17 Ah
Battery
IResidual = 150 mA
IBattery_Charge_80%_24H =
(38*0.8)/24 = 1266.66 mA -> 1500 mA
IFor_panel = 5500 - 1500 = 4000 mA
Panel Load Distribution
IMain_Board_Electronics = 250 mA
ITotal_Loops_1_2_3 (*) = 800 mA
@40V (1300 mA @27V)
ITotal_Outputs (***) = 2200 mA
IFC500IP = 100 mA (****)
38 Ah
Battery
IResidual = 150 mA
Note:
• (*): ITotal_Loops_1_2_3 is the sum of
currents absorbed on Loops 1, 2, 3
• (**): ITotal_Loops_4_5_6 is the sum of
currents absorbed on Loops 4, 5, 6
• (***): ITotal_Outputs is the sum of the
currents drawn by the terminals SC1, SC2,
24A, 24R, 24V-RS485.
• (****): If the FC500IP module is not be
used then the relative amount of current
(100 mA) can be drawn from the SC1,
SC2, 24A, 24R, 24V-RS485 terminals.
Table 66: Max withdrawable current for FC503
and FC506 control panels
Terminals Max Current
SC1 0.5 A
SC2 0.5 A
24A 1 A
24R 1 A
24V-RS485 1 A
FC503 and FC506 Addressable Fire Control Panels86
Johnson Controls - CONFIDENTIAL