Honeywell NOTIFIER SFP-10UD Series, Manual, Page: 137 / 164

SFP-5UD & SFP-10UD Series Manual— P/N 52879:C2 1/24/2012 137
Calculating the System Current Draw Power Supply Calculations
Table 7.3 contains three columns for calculating current draws. For maximum output current avail-
ability per circuit and per panel, refer to Section 1.2, “Specifications”, on page 15. For each col-
umn, calculate the current and enter the total (in amperes) in the bottom row. When finished, copy
the totals from Calculation Column 2 and Calculation Column 3 to Table 7.4 on page 138.
Device Type
Calculation Column 1
Primary, Non-Fire Alarm Current
(amps)
Calculation Column 2
Secondary, 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
Main Circuit
Board
SFP-5UD
or
SFP-10UD
1
X[0.110]=
X[0.133]=
1
X[0.214]
1, 2
=
X[0.282]
1, 2
=
1
X[0.110]=
X[0.133]=
N-CAC-5X [ ] X[0.001]= [ ] X[0.001]= [ ] X[0.001]=
4XTM [ ]
1 max.
X[0.005]= [ ]
1 max.
X[0.011]
1
= [ ]
1 max.
X[0.005]=
ANN-SEC card [ ]
1 max.
X[0.003]= [ ]
1 max.
X[0.003]= [ ]
1 max.
X[0.003]=
N-ANN-80(C) [ ] X[0.037]= [ ] X[0.040]= [ ] X[0.015]=
N-ANN-I/O [ ] X[0.035]= [ ] X[0.200]= [ ] X[0.035]=
N-ANN-RLY [ ] X[0.015]= [ ] X[0.075]= [ ] X[0.015]=
N-ANN-(R)LED
3
[ ] X[0.028]= [ ] X[0.068]= [ ] X[0.028]=
N-ANN-S/PG [ ] X[0.045]= [ ] X[0.045]= [ ] X[0.045]=
2-wire Detector
Heads
[ ] X[ ]
4
= [ ]
5
X[0.040]= [ ] X[ ]
4
=
4-wire Detector
Heads
[ ] X[ ]
4
= [ ]
5
X[0.040]= [ ] X[ ]
4
=
Power
Supervision
Relays
6
[ ] X[0.025]= [ ] X[0.025]= [ ] X[0.025]=
NAC #1 [ ] X[ ]=
NAC #2 [ ] X[ ]=
NAC #3
NAC #4
Current Draw
from TB9
(nonalarm)
[ ]= [ ]= [ ]=
Sum each
column
7
for
totals
Primary Non-Alarm = Secondary Alarm = Secondary Non-Alarm =
Table 7.3 System Current Draw Calculations
1 If using the Reverse Polarity Alarm output, add 0.005 amps; if using the Reverse Polarity Trouble output, add
another 0.005 amps.
2 The current draw shown represents one zone (IDC) on the main circuit board in alarm. One zone consumes
0.040 amps.
3 An N-ANN-LED is supplied standard with the SFP-5UDC and SFP-10UDC.
4 Refer to the Device Compatibility Document for standby current.
5 Enter the number of IDCs used minus one.
6 Must use compatible listed Power Supervision Relay.
7 Total current draw listed above cannot exceed 3.25 amps for the SFP-5UD(E), 7.25 for the SFP-5UDC, and
7.28 for the SFP-10UD(C/E).