TBI
PHOTOCELL CELL
SEE NOTE 2
NOTES:
I
FUSE
2 SPST (FOR REMOTE MANUAL CONTROL)
Figure 3
Schematic Diagram, 120V Units
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A
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TBI
I I
P
H
O
T
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C
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L
L
C
E
L
L
SEE NOTE 2
DSI
2 4 0 V
VALUE:
2. SPST
REMOTE MANUAL CONTROL)
Figure 4
Schematic Diagram, 240V Units
the natural light that exists at the scene to
be viewed. Protect the window side of the
sensor from any direct artificial light that
may exist near the photocell after dark, for
example, street lights, window signs, or even
the illuminator itself. The normal direction
of the sensor is facing up, away from the
projected light beam.
clear day. This setting can later be adjusted
for individual needs or for the sensitivity of
the particular camera being used.
The photocell circuit has a 30 second
(minimurn) time-delay feature. This prevents
false switching due to temporary flashes of
light from car headlights, temporary cloud
darkening, etc. The illuminator will be on
when it is first installed, so avoid looking
into the infrared light when checking
photocell operation. If sufficient light
exists, the photocell will switch off after a
short delay. During testing, a delayed
response should be noted.
Adjust the photocell for proper triggering by
sliding the movable clip on the unit into the
appropriate position on the sensor window.
For most applications, slide the clip up to
the 40 or 50 foot-candle setting. This will
turn on the illuminator at about sunset on a
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X301-686
