DAVIS SPREAD-SPECTRUM RADIO MODEM, Руководство пользователя

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Page 30 Spread-Spectrum Radio Modem Installation Kit
✦
Line B (Alarm Output Module/Timer)
The Alarm Output Module draws 9 mA (0.009A) continuously (1440
minutes per day). The Timer current may be considered negligible (0A)
when the Timer is off (that is, the relay is not energized). The Timer
draws 12 mA (0.012A) when it is on (that is, the relay is closed).
✦
Line C (RM On)
When the RM is on, it draws 180 mA (0.18A).
Note: The Alarm Output Module enables the RM for a minimum of 48 minutes every day (4
minutes each even-numbered hour). The timer enables the RM for the amount of time
for which you have it set.
Charge Drain per Day Example
The example worksheet shown below illustrates the power drain for a
GroWeather, using the Timer to turn the RM on for six four-minute periods
each day.
C
OMPONENT
C
URRENT
T
IME
O
N
D
RAIN
L
INE
(A
MPS
) (
MIN
/
DAY
) (A
MP
-
MIN
)
Console, SIM/junction box & WeatherLink 0.018 1440 25.9 A
Alarm Output Module/Timer 0.012 24 0.3 B
RM On 0.180 24 4.3 C
Total System Drain per Day = A+B+C: 30.5 Amp-min