Honeywell fire-lite alarms MRP-2002E Manual page 101

Calculating the System Current Draw
Table 5-3 contains three columns for calculating current draws. For each column, calculate the
current and enter the total (in amperes) in the bottom row. When finished, copy the totals from Cal-
culation Column 2 and Calculation Column 3 to Table 5-4 on page 102.
TABLE 5-3:System Current Draw Calculations
Calculation Column 1
Primary, Non-Fire Alarm Current
Device Type (amps)
Qty
Main Circuit Board 1
CAC-5X [ ]
[ ]
4XTMF
(1 max.)
ANN-80 [ ]
ANN-I/O [ ]
ANN-RLY [ ]
ANN-(R)LED [ ]
ANN-S/PG [ ]
2-wire Detector Heads [ ]
4-wire Detector Heads [ ]
Power Supervision
[ ]
3
Relays
4
NAC #1
NAC #2
NAC #3
NAC #4
Current Draw from
5
TB9 (nonalarm )
6
Sum each column
for totals Primary Non-Alarm =
Table Footnote
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. Refer to the Device Compatibility Document for standby current.
3. Must use compatible listed Power Supervision Relay.
4. Current limitation of Terminal TB5 circuits is 3.0 amps per NAC
5. The total standby current must include both the resettable (TB9 Terminals 3 & 4) and nonresettable/resettable (TB9 Terminals 1
& 2) power. Caution must be taken to ensure that current drawn from these outputs during alarm does not exceed maximum rat-
ings specified. Current limitations of TB9, Terminals 1 & 2 = 0.500 amps, filtered, 24 VDC +/-5%, 120 Hz ripple @ 10 mV
nonresettable power and TB9, Terminals 3 & 4 = 0.500 amps, filtered, 24 VDC +/-5%, 120 Hz ripple @ 10mV
power.
6. Total current draw listed above cannot exceed 7.0 amps
7. The current shown represents one zone (IDC) on the main circuit board in alarm. One zone consumes 0.040 amps.
8. Enter the number of IDCs used minus one.
MRP-2002 & MRP-2002E PN 53049:A1 5/01/2008
Calculation Column 2
Secondary, Fire Alarm Current
(amps)
X[current draw]= Total Qty
X[0.122]= 0.122 1
X[0.001]= [
X[0.005]= [
X[0.037]= [
X[0.035]= [
X[0.015]= [
X[0.028]= [
X[0.045]= [
2
X[ ] = [
2
X[ ] = [
X[0.025]= [
[
[
[ ]=
Secondary Alarm =
X [current draw] = Total
1, 7
0.185
X[0.185] =
] X[0.001]=
1
]
X[0.011] =
] X[0.040]=
] X[0.200]=
] X[0.075]=
] X[0.068]=
] X[0.045]=
8
X[0.040]=
]
8
X[0.040]=
]
] X[0.025]=
] X[ ]=
] X[ ]=
[ ]=
Power Supply Calculations
Calculation Column 3
Secondary, Non-Fire Alarm Current
(amps)
Qty X[current draw]= Total
1 X[0.122]= 0.122
[ ] X[0.001]=
[ ] X[0.005]=
[ ] X[0.037]=
[ ] X[0.035]=
[ ] X[0.015]=
[ ] X[0.028]=
[ ] X[0.045]=
2
[ ]
X[ ] =
2
[ ]
X[ ] =
[ ] X[0.025]=
[ ]=
Secondary Non-Alarm =
RMS
, resettable
RMS
101
,