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411UDAC Power Supply
6.1
411UDAC Power Supply
The 411UDAC provides filtered power for operating the digital communicator, external devices and the battery
charger. The power for operating external devices is limited. Use Table 6-2 (standby or nonalarm) and Table 6-3
(alarm) to determine if external loading is within the capabilities of the power supply.
Load in Standby
TABLE 6-2:
Device Type
Main Circuit Board
2-wire Detector Heads
4-wire Detector Heads
Power Supervision Relays
Additional Current Draw
from 12 VDC Resettable
Notes:
Refer to the Device Compatibility Document for compatible listed power supervision relays.
1.
Refer to Device Compatibility Document for 2-wire and 4-wire smoke detector standby current.
2.
Load in Alarm
TABLE 6-3:
Device Type
Main Circuit Board
4-wire Detector Heads
Power Supervision Relay
2
Notification Appliances
Additional Current Draw
from 12 VDC Resettable
Notes:
Use compatible listed power supervision relay only. Refer to the Device Compatibility Document
1.
Refer to the Device Compatibility Document for 4-wire smoke detector current
2.
Maximum available current for notification appliances is 1.0 amp
3.
Maximum available current from resettable output is 0.200 amps
4.
Total system current cannot exceed 1.6 amps
5.
For Remote Station applications, total standby current must not exceed 193 mA
6.
# of Devices
1
X
[
]
X
[
]
X
1
X
[
]
X
Sum Column for Standby Load
# of Devices
1
X
[
]
X
1
[
]
X
[
]
X
[
]
X
3
Sum Column for Alarm Load
Document #51073
Current
(amps)
0.143
=
[
]
=
[
]
=
=
[
]
=
=
Current
(amps)
0.330
=
[
]
=
0.025
=
[
]
=
[
]
=
=
Rev. A 1/19/99
P/N 51073:A
Total Current
(amps)
0.143
amps
Total Current
(amps)
0.330
amps
63
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