15
AS Auto On/Off (Interior Lights with AS-100 Switch)
In this scenario, lighting is turned on automatically by the AS switch after receiving a signal
from the panel. During the scheduled occupied times, the lighting can be controlled ON/OFF
by the occupant using the button on the AS switch. All other functionality and programming
requirements are same as AS Manual On/Auto Off.
Photocell Control Options
If an EM24-A2 Photocell is connected to the system, the following exterior lighting scenarios
may be used.
Photocell ON/OFF (Exterior Lights – Security)
A channel assigned to this scenario turns on its relay(s) when the photocell signals it is dark
outside. It turns off the relay(s) when the photocell signals it is light.
No additional data is required by the clock.
Photocell and Schedule ON/OFF (Exterior Lights)
A channel assigned this scenario turns on its relay(s) when the building is scheduled to be
occupied and the photocell signals that it is dark outside. It turns off the relay(s) either when the
building is scheduled unoccupied or when the photocell signals it is light.
Data required by the clock:
A
Occupancy times by day of week.
Astronomic Control Options
Using the LP8’s built-in timeclock, the Astronomic functions automatically calculate sunrise and
sunset times according to the panel’s location as programmed in SETUP — Select Location.
Astronomic ON/OFF (Exterior Lights – Security)
A channel assigned this scenario turns on its assigned relay(s) when it is dark outside and turns
them off when it is light. “Dark” is defined by the user as a number of minutes before or after
sunset. The sunrise darkness threshold mirrors the sunset programming, meaning that if you
set dark for 20 minutes BEFORE sunset, the morning light begins 20 minutes AFTER sunrise.
No compensation is made for rainy or overcast days.
Data required by the Clock:
A
Building location (nearest city/state/province or geographic coordinates, entered in SETUP
screen)
B Time before or after sunset that the lights should turn on (in 10-minute increments, up to
120 minutes). The lights will turn off the number of minutes before or after sunset and the
same number of minutes after or before sunrise – example: 30 minutes after sunset / 30
minutes before sunrise (see illustration).
Astronomic and Scheduled ON/OFF
(Exterior Lights)
A channel assigned this scenario turns
on its relay(s) when it is dark outside
and the building is occupied. It will turn
off when the building is scheduled to be
unoccupied. Generally, lights turn on in
the evening, off at night when the building
is not occupied, then back on in the early
morning until it becomes light.
Data required by the Clock:
A Building location (nearest city/state or
province, entered in SETUP screen)
B Occupancy times by day of week
C Time in minutes before or after sunset that the lights should turn on
NIGHT
Dark = 30min after sunset
(and lasts until 30
minutes before
sunrise)
DAY
Light
Summary of Contents for Wattstopper LP24
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