WLCP-36WST-S3

WLCP-36WST-S3
WTP-4408 Controller
Programming
Types of Schedules
ON
The relay output will issue a
signal to turn the relay(s)
ON at the specified time.
Press the D button to
confirm the ON action and
return to the Event
Schedule Menu.
The Event Schedule Menu
appears:
OFF
The relay output will issue a
signal to turn the relay(s)
OFF at the specified time.
Press the D button to
confirm the OFF action
and return to the Event
Schedule Menu.
The Event Schedule Menu
appears:
Photocell Enable
Refer to Page 28 for how
to SAVE a schedule to
permanent memory.
NEW SCHEDULE ACTION
TYPE OF
ACTION: ON
OK
A B D
NEW OUTPUT: 1 MTWTFSS
06:00A ON MTWTFSS
TIME
ACTION
DAYS
SAVE
A B C D
NEW SCHEDULE ACTION
TYPE OF ON
ACTION: OFF
In order to utilize this feature, a WPS-5527K Photometric Sensor
must be connected to the WTP-4408 Controller and the Photo
Settings Option must be turned ON in the Setup Menu.
Photo control will be enabled
at the specified time.
Press the D button to confirm
the Photocell Enable action
and proceed to the Setpoint
Setup screen.
When the Setpoint Setup
screen appears, press the A
button to modify the high
setpoint or the B button to
modify the low setpoint.
Use the number keys on the
keypad to enter both the high
and low level setpoints. Be
sure that the high setpoint
value is greater than the low.
NEW SCHEDULE ACTION
TYPE OF TIMEOUT ENB
ACTION: PHOTO ENB
OK
A B D
SETPOINT SETUP
HIGH LEVEL:
LOW LEVEL:
HIGH LOW
A
B
OK
A B D
NEW OUTPUT: 1 MTWTFSS
06:00A OFF MTWTFSS
TIME
ACTION
DAYS
SAVE
A B C D
0020 fc
0005 fc
Components WLCP-36WST-S3 1.1
page 30
Photocell Enable (continued)
Press the D button to
confirm the Photocell
Enable and the setpoint
selections and return to
the Event Schedule Menu.
The Event Schedule Menu
appears:
How the Photocell Control (PHOTO ENB) works:
The WTP-4408 will automatically keep track of the measured light level
(in footcandles) sent from the sensor head. This information will be
displayed on the Main Menu. The measured light level can be used to
switch relays ON or OFF depending on the setpoints.
The following diagram shows the relationship between measured light
level and the setpoints.
15fc
current measured light level
from sensor head
ON
5fc
Low Level Setpoint
Dead Band
OFF
20fc
High Level Setpoint
When the measured light level passes above the High setpoint, the relay
output will turn OFF. The opposite occurs when the measured light level
falls below the Low setpoint.
Note the switching action only occurs when the light level goes past a
setpoint or when the Photocell is enabled by a scheduled event. The relay
outputs will issue a momentary signal ON or OFF.
The WTP-4408 will wait 3 minutes to switch the relays. The purpose is to
nullify any temporary changes to the light level that could cause false
switching.
Photocell control is used primarily in exterior or interior skylighting
control applications. Typically, for an exterior application the setpoints
would be 20fc for the High & 5fc for the Low.
For an interior application that switches lights on a cloudy day, typical
setpoints are 1000fc for the High and 700fc for the Low.
CAUTION: Do not schedule an ON or an Astronomical (Astro ENB)
event when the Photocell mode (Photo ENB) is scheduled to
operate on that output.
Continued on the next page ...
SETPOINT A SETUP B D
HIGH LEVEL:
0020 fc
LOW LEVEL:
0005 fc
OK
NEW OUTPUT: 1 MTWTFSS
06:00A PHOTO ENB MTWTFSS
TIME
ACTION
DAYS
D
SAVE
A B C D
lighting controls