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Power Supply Calculations
TABLE A-3:
Device Type
Main Circuit Board
RTM-8F
ACM-8RF
AFM-16ATX
AFM-32AX
AEM-16ATF
AEM-32AF
AFM-16ATF
AFM-32AF
AFM-16AF
UDACT-F
LDM-32F
LDM-E32F
LCD-40 Series
4-Wire Smoke Detector
Power Supervision Relay
Addressable Devices
Notification Appliances
1. Current limitations of terminals:
TB4, Terminals 1 & 2 = 2.5 amps
TB4, Terminals 3 & 4 = 0.3 amps
TB4, Terminals 5 & 6 = 0.3 amps
TB1 and TB2, any one circuit = 2.5 amps
Total current draw from all terminals cannot exceed 3.6 amps with standard XRM-1 transformer installed; 6.0 amps
with both standard XRM-1 transformer and optional XRM-24 transformer installed. Note that total current from TB4,
Terminals 3 & 4 and 5 & 6 must not exceed 0.600 amps.
2. All RTM-8F Relays activated
3. All eight ACM-8RF Relays activated on a single module
4. All annunciator LEDs on
5. UDACT-F actively making phone call to Central Station. If the normally open contact is used, current consumption
increases to 100 mA
6. LDM-32F with LEDs on
7. M302 Monitor Module current-limited at 90 mA in alarm
8. This column must not exceed total system current draw of 6.6 amps
Technical Manuals Online! - http://www.tech-man.com
Filtered Load in Alarm - External Devices Connected to TB2 & TB4 Only
# of Devices
1
[
] one max.
[
]
[
] one max.
[
]
[
]
[
]
[
] one max.
[
]
[
]
[
]
[
]
[
]
maximum draw
for all devices
[
]
Sum Column for Alarm Load
firealarmresources.com
Alarm Current
(amps)
X
0.168
X
0.146
X
0.158
X
0.056
X
0.018
X
0.056
X
0.065
X
0.075
X
0.056
X
0.018
X
0.054
X
[
X
[
7
X
0.2
X
[
Document #15668
Rev. I
04/20/98
P/N 15668:I
Total Current
(amps)
=
0.168
2
=
3
=
4
=
4
=
4
=
4
=
5
=
6
=
=
=
=
]
]
=
=
]
=
=
1
0.2
8
amps
79
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