Download UltraSite User`s Guide BEC Supplement

Sensors must be defined in the BEC before they will appear
in the Outside Light Level Sensor Number scroll options.
See Section 8, Sensor Control.
Zone Light Level Sensor # [options] [NONE]
The zone light level sensor must be set up as one of the 64
system sensors configurable in the BEC. Choose the appropriate sensor from the scroll options.
Sensors must be defined in the BEC before they will appear
in the Outside Light Level Sensor Number scroll options.
See Section 8, Sensor Control.
Light Panel Update Interval [0 - 60 min.] [20 min.]
After the BEC checks the outside light level and makes any
necessary adjustments to the dimmer, the BEC waits for an
amount of time equal to the Light Panel Update Interval be-
6.2.5.
fore making another check. Enter a number of seconds
from 1 to 60 in the Light Panel Update Interval field.
Pulse Width [1 - 100 tenths of sec] [5 tenths of sec]
The BEC adjusts dimmer settings by sending a series of 12
V DC digital pulses to the dimmer panel. Each pulse raises
or lowers the dimmer percentage by a slight amount. The
desired width of the pulse is entered in the Pulse Width
field. Specify a value from 1 to 100 tenths of a second.
Raise/Lower
The Raise output sends 12 V DC pulses to the dimmer panel when the BEC calls for a higher indoor light level. The
Lower output sends pulses when the BEC calls for a lower
light level. Specify the board and point addresses of these
outputs in the Raise/Lower fields.
Setup Instance
Setup Instance allows users to access all
dimmer-related dialog boxes in succession.
Functional Description
When Setup Instance is chosen, all dialog boxes related to
lighting zone setup appear in sequence. This allows users
48 • Dimmer Control
to change a number of settings without having to select
each dialog box individually from the system tree menu.
When a new zone is created in UltraSite, the Setup Instance
sequence is initiated automatically.
Setup Instance cycles through the dialog boxes in the following order:
• Dimmer Setup - see Section 6.2.4.
• Dimmer Setpoints - see Section 6.2.2.
026-1003 Rev 1 10-06-97