54
NFS-320/E/C Installation Manual —
P/N 52745:M2 7/1/14
Power Supply Calculations
Calculating the System Current Draws
Category
Calculation Column 1
Primary, Non-Fire Alarm
Current (amps)
Calculation Column 2
Primary, Fire Alarm
Current (amps)
Calculation Column 3
Secondary, Non-Fire Alarm
Current (amps)
Qty
X [current draw]=
Total
Qty
X [current draw]=
Total
Qty
X [current draw]=
Total
NFS-320/E
# NACs in use (0, 1, 2, 3 or 4)
*
CPS-24/E
KDM-R2 (Backlight on)
1
[ ]
n/a
[ ]
x [0.250] =
x [0.035]
n/a
x [0.100]=
1
[ ]
n/a
[ ]
x [0.250] =
x [0.035]
n/a
x [0.100]=
1
[ ]
1
[ ]
x [0.250] =
x [0.035]
x [0.040]
x [0.100]=
SLC loop
†
:
1
x [0.200]=
1
x [0.200]=
1
x [0.200]=
NCA, NCA-2 Back-light ON
NCA, NCA-2 Back-light OFF
NCM-W/F
HS-NCM-W/MF/SF/WMF/WSF/MFSF
TM-4
DPI-232 (Refer to manual**)
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
x [0.400]=
x [0.200]=
x [0.110]=
x [0.400]=
x [0.110]=
x [
]=
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
x [0.400]=
x [0.200]=
x [0.110]=
x [0.400]=
x [0.175]=
x [
]=
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
x [0.400]=
x [0.200]=
x [0.110]=
x [0.400]=
x [0.110]=
x [
]=
APS-6R
ACPS-2406, ACPS-610
[ ]
[ ]
x [0.025]=
x [0.0013]=
ACM-24AT
ACM-48A
AEM-24AT
AEM-48A
[ ]
[ ]
[ ]
[ ]
x [0.016]=
x [0.016]=
x [0.002]=
x [0.002]=
[ ]
[ ]
[ ]
[ ]
x [0.070]=
x [0.070]=
x [0.056]=
x [0.056]=
[ ]
[ ]
[ ]
[ ]
x [0.016]=
x [0.016]=
x [0.002]=
x [0.002]=
Maximum number of LEDs illuminated on
these annunciators during non-fire
conditions:
[ ]
x [0.0054]=
[ ]
x [0.0054]=
AFM-16AT, AFM-32A
ACM-16AT, ACM-32A
AEM-16AT, AEM-32A
[ ]
[ ]
[ ]
x [0.040]=
x [0.040]=
x [0.002]=
[ ]
[ ]
[ ]
x [0.056]=
x [0.056]=
x [0.018]=
[ ]
[ ]
[ ]
x [0.040]=
x [0.040]=
x [0.002]=
AFM-16A
ACM-8R (refer to manual**)
LDM (refer to manual**)
FDU-80
LCD-80
LCD2-80
[ ]
[ ]
[ ]
[ ]
[ ]
x [0.025]=
x [
]=
x [
]=
x [0.0643]=
x [0.100]=
[ ]
[ ]
[ ]
[ ]
[ ]
x [0.065]=
x [
]=
x [
]=
x [0.0643]=
x [0.100]=
[ ]
[ ]
[ ]
[ ]
[ ]
x [0.025]=
x [
]=
x [
]=
x [0.0643]=
x [0.050]=
FZM-1, MMX-2 Auxiliary power
[ ]
x [0.0115]=
[ ]
x [0.090]=
[ ]
x [0.0115]=
RPT-W, RPT-WF, RPT-F
RPT-485W, RPT-485WF
[ ]
x [0.017]=
[ ]
x [0.017]=
[ ]
x [0.017]=
UDACT Communicator
UDACT-2 Communicator
NFV-25/50 (see manual**)
[ ]
[ ]
[ ]
x [0.040]=
x [0.052]=
x [
]=
[ ]
[ ]
[ ]
x [0.100]=
x [0.087]=
x [
]=
[ ]
[ ]
[ ]
x [0.040]=
x [0.052]=
x [
]=
FWSG (only if powered by the FWSG 24V
connections TB:A2 and TB:A3)
[ ]
x [0.040]=
[ ]
x [0.040]=
[ ]
x [0.040]=
Four-Wire Smoke Detectors
‡
[ ]
[ ]
x [
]=
x [
]=
[ ]
[ ]
x [
]=
x [
]=
[ ]
[ ]
x [
]=
x [
]=
Power Supervision Relay
EOLR-1
[ ]
x [0.020]=
[ ]
x [0.020]=
[ ]
x [0.020]=
Notification Appliance powered from Main
Power Supply
**
[ ]
[ ]
x [
]=
x [
]=
DHX-501, FSD-751RPFSD-751RPL(Duct
Detectors with internal relays)
Refer to installation document
[ ]
[ ]
x [
]=
x [
]=
[ ]
[ ]
x [
]=
x [
]=
[ ]
[ ]
x [
]=
x [
]=
CHG-120 Battery Charger
[ ]
x [0.060]=
Local Energy Municipal Box
[ ]
x [
]=
Compatible Devices not listed above
††
[ ]
[ ]
x [
]=
x [
]=
[ ]
[ ]
x [
]=
x [
]=
[ ]
[ ]
x [
]=
x [
]=
Sum each column for totals
Primary, non-alarm:
Primary, alarm:
Secondary, non-alarm:
Table A.2 System Draw Current Calculations
*
Maximum current draw for all NACs plus DC output from TB10 and TB2 is 3.0 A during standby.
†
Value represents an SLC’s maximum current draw. Refer to device datasheets for individual current draws.
‡
The total regulated load current supplied to four-wire smoke detector and power supervision relays cannot exceed 1.25 A.
**
Enter the total notification appliance draw from the Main Power Supply, excluding the current from APS-6R supplies. Refer to Device Compatibility Document.
†† Refer to manual and/or Device Compatibility Document. See Table 1.1, “Reference Documentation,” on page 8 for specific documentation part numbers.
