LEGRAND Watt Stopper CI-355 User manual

CI-355
360° Passive Infrared • Line Voltage
Occupancy Sensor
with Light Level feature
SPECIFICATIONS
Voltages ..............................................................120/230/277/347VAC
Load Ratings
@120VAC................................................. 0-800W Ballast/Tungsten
@230 or 277VAC, 50/60Hz .....................................0-1200W Ballast
@347VAC, 50/60Hz ................................................0-1500W Ballast
Operating Temperature................................ 32° to 131°F (0° to 55°C)
Light Level One-Step Adjustment....................................10FC–300FC
Time Delay Adjustment............................................... 5 to 30 minutes
Walk-Through Mode ..............3 minutes if no activity after 30 sec.
Test Mode............5 sec. upon intial power-up or DIP switch reset
PIR Coverage
Sensitivity Adjustment ................... Automatic or Low (DIP switch)
Model CI-355............................................................... up to 1200ft2
Model CI-355-1 ............................................................. up to 500ft2
U.S. Patents: 4,787,722
5,189,393
and Patent Pending
Santa Clara, CA 95050
Installation Instructions

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UNIT DESCRIPTION
The Watt Stopper CI-355 360° passive infrared (PIR) occupancy sensors turn
lighting systems on and off based on occupancy and ambient light levels. The
light level feature can be used to keep lights from turning on if the ambient light
level is sufficient.
SmartSet™ technology allows the sensor to be installed with minimal
adjustments. SmartSet automatically adjusts the time delay and PIR sensitivity to
usage patterns in the controlled space.
The sensors can be configured to turn lighting on, and hold it on as long as the
sensor detects occupancy. After no movement is detected for a user specified
or SmartSet time (5 to 30 minutes) the lights are switched off. A “walk-through”
mode can turn lights off after only 3 minutes, if no activity is detected after 30
seconds of an occupancy detection.
The CI-355 operates on 120VAC, 230VAC, 277VAC or 347VAC.
COVERAGE PATTERN
The CI-355 provides a 360° coverage pattern. Two lens patterns are available. The
CI-355 provides up to 1200 square feet of coverage and the CI-355-1 provides up
to 500 square feet of coverage. The coverage shown represents walking motion
at a mounting height of 8 feet. For building spaces with lower levels of activity or
with obstacles and barriers, coverage size may decrease.
8 ft
12 ft 12 ft3 ft 3 ft5 ft 5 ft7 ft 7 ft9 ft 9 ft
0
Typical
desk-top
level
24 ft
7.3m
44 ft
13.4m
8 ft
22 ft 13 ft 7 ft 3 ft 03ft 7 ft 13 ft 22 ft
Typical
desk-top
level
CI-355 Coverage Pattern
(standard lens)
CI-355-1 Coverage Pattern
(high density, reduced range lens)

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PLACEMENT GUIDELINES
Depending upon obstacles such as furniture or partitions, the area of coverage
may be less or more than the sensing distances shown in the coverage pattern.
This must be considered when planning the number of sensors and their
placement. It is also recommended to place the sensor 4 to 6 feet away from air
supply ducts as rapid air currents or the differences in temperatures may cause
false activations.
Mount the sensor to the ceiling. The CI-355 is designed for a ceiling height of
about 8-10 feet. Mounting above or below this range will significantly affect the
coverage patterns. Be aware that as you decrease the mounting height, you
decrease the range and increase the sensitivity to smaller motions. Conversely,
when you increase the height, you increase the range and decrease the sensitivity
to smaller motions. At heights of more than
12-14 feet, you may start to significantly
reduce sensitivity. As a general rule, each
occupant should be able to clearly view the
sensor.
Often the best location to install a CI-355 in
a closed office is off-center. Avoid placing
a sensor directly in line with an open door
through which it has a clear view out, as the
sensor may detect people walking by.
Masking the PIR Lens: Opaque adhesive tape is supplied so that sections of
the PIR lens can be masked. This restricts the sensor’s view and allows you to
eliminate PIR coverage in unwanted areas such as hallways outside of the desired
coverage area. Since masking removes bands of coverage, remember to take this
into account when troubleshooting coverage problems.
Open Office Area Coverage: To get
complete coverage in an open office area,
install multiple sensors so that there is
an overlap with each adjacent sensor’s
coverage area.
For open office areas with partitions it is
best to place sensors over intersection of
four workstations.
For large areas of coverage use multiple
sensors.
CI-205
36'
36'
CI-205
12'
18'

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WIRING DIRECTIONS
CAUTION
TURN POWER OFF AT THE CIRCUIT BREAKER
BEFORE INSTALLING SENSORS.
Load
Switch Load Hot
Neutral
Neutral
Ground
(Optional)
Hot
Neutral
Neutral
Load
Load
Load
Line
Neutral
Line
Ground
(Optional)
Ground
(Optional)
Strip Gauge
#12 to #16 AWG
Cu Wire Only
Multiple sensors connected in parallel

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LIGHT LEVEL FEATURE
The Light Level feature holds lights off upon initial occupancy if adequate ambient
light exists. It will not turn the lights off if they are on. The default setting is for
maximum, meaning that even the brightest ambient light will not hold the lights
off. When the light level is set it is written to memory so that in the event of power
failure the setting is not lost.
• Avoidmountingthesensorclosetolightingxtures.
• Adjustduringdaylighthourswhenambientlightintheareaisatdesiredlevel.
1. Open the Front Cover and locate the Light Level pushbutton. See Sensor
Adjustment.
2. Momentarily press the Light Level pushbutton. Do not exceed 4 seconds.*
The sensor enters setup mode, as indicated by the rapidly flashing green LED.
The LED will flash throughout the setup process. Occupancy indications from
the LED are disabled during setup.
3. Move away from the sensor to avoid interference with light level detection.
The sensor measures the light level for a 25-second period, then averages the
readings and automatically sets the light level function.
4. When the LED stops flashing, replace the Front Cover.
* Pressing the pushbutton for 5 seconds or more resets the light level to the
default. The LED flashes rapidly for 10 seconds after the setting has changed.

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MOUNTING THE SENSOR
Using a 4-Inch Square Junction
Box with Double-Gang
Mudring
1. Pull the high voltage wires into
the J-Box through the conduit
knockout.
2. Connect the high voltage wires to
the appropriate terminals on the
sensor.
3. Align the sensor in the J-Box
so that the mudring mounting
screw tabs on the box match the
mudring mounting holes on the
sensor’s rear housing.
4. Use two machine screws (included with the sensor) to attach the sensor to the
mounting tabs on the J-Box.
5. Snap the front cover onto the sensor.
Using an Octagonal Junction Box
1. Pull the high voltage wires
into the J-Box through the
conduit knockout.
2. Connect the high voltage
wires to the appropriate
terminals on the sensor.
3. Align the sensor in the J-Box
so that the mounting screw
tabs on the box match the key
holes on the sensor’s rear
housing.
4. Use two machine screws
(included with the J-Box)
to attach the sensor to the
mounting tabs on the J-Box.
5. Snap the front cover onto the
sensor.
4" Octagonal, 2.25" Deep*
Junction Box
Ceiling
Sensor
Screws
Front
Cover
4" Square, 2.25" Deep*
Junction Box with
Double Gang
Mudring attached
Drop Ceiling
Front
Cover
CA-1 Adapter
Rear Housing
Screws
Sensor Flange
* The Junction Box must be at least 2.25” deep. If it is not, an
extension ring is required.

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SENSOR ADJUSTMENT
The sensors are factory preset to allow for quick installation in most applications.
Verification of proper wiring or coverage, or customizing the sensor’s settings can
be done using the following procedures. To make adjustments, open the Front
Cover with a small screwdriver.
There is a 30 second
warm-up period when
power is first applied.
Before making adjustments,
make sure the office furniture
is installed, lighting circuits are
turned on, and the HVAC systems
are in the overridden/on position.
VAV systems should be set to
their highest airflow. Set the DIP
switches to the desired settings.
See “DIP Switch Setting”, next page.
To Test Occupancy Sensors
1. Ensure the PIR Activity LED is enabled (DIP switch 6 ON) and PIR Sensitivity is
set to MAX (DIP switch 7 ON).
2. Ensure the Time Delay is set for Test Mode* using the “5 seconds/SmartSet”
setting. (DIP switches 3,4, & 5 are OFF).
3. Ensure that the Light Level is at default (maximum). See the Light Level
Feature section of this document for instructions.
4. Remain still. The green LED should not flash. The lights should turn off after 5
seconds. (If not, see “Troubleshooting.”)
5. Move about the coverage area. The lights should come on.
When testing and adjustment is complete, reset DIP Switches and Light Level to
the desired settings, and replace the cover on the sensor.
* If you need to invoke the Test Mode and the DIP switches are already set for
5 seconds/SmartSet, toggle DIP switch #5 ON then back to the OFF position.
This provides a 5 minute test period. During the test period, the Time Delay is
only 5 seconds.
Keyhole slots
(for mounting to
4" octagonal box)
Double gang
mudring
mounting holes
Light level
pushbutton
DIP
switches
PIR lens
ON
1234567
ECE
PIR Activity
LED (Green)

DIP SWITCH SETTING
The CI-355 has 7 DIP switches under the cover. They
are used to set time delay and sensor activation LED
settings.
Not Used: Switch 1
Switch 1 has no function. It’s position does not affect
the sensor’s operation.
Override: Switch 2
To override all sensor functions, set DIP switch 2 to the
ON position. The green LED will come on and stay on
for the duration of the override.
This bypasses the light level and occupancy detection
control functions of the sensor, but still allows the
lights to be manually controlled with a light switch, if
one is installed.
Time Delay: Switches 3, 4, 5
The sensor will hold the lights on as long as occupancy
is detected. The time delay countdown starts when
no motion is detected. After no motion is detected for
the length of the time delay, the sensor will turn the
lights off. The sensor can select the time delay using
SmartSet, or you can select a fixed time delay.
• SmartSetrecordsoccupancypatternsandusesthis
history to choose an optimal time delay from 5 to 30
minutes. SmartSet behavior starts immediately and
is refined continually as history is collected.

Walk-through mode turns the lights off three minutes after the area is
initially occupied, if no motion is detected after the first 30 seconds. If motion
continues beyond the first 30 seconds, the selected time delay applies.
LED: Switch 6
When enabled, the green PIR Activity LED under the sensor lens will light when
the sensor detects motion.
Sensitivity: Switch 7
Minimum forces a reduced detection range for the PIR.
Max/SmartSet causes the sensor to monitor the controlled area and automatically
select the maximum sensitivity that will provide reliable operation without false
detection. This setting is constantly updated.
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5 sec/SmartSet
10 minutes
10 minutes
15 minutes
15 minutes
20 minutes
30 minutes
5 minutes
345
Time Delay
= walk-through mode
LEDs
Disabled
Enabled
6
= ON
-= OFF
= Factory Setting


1
Not Used
2
Normal
Override
Override

Sensitivity
Minimum
Max/Smartset
7

Feature Switch

TROUBLESHOOTING
CAUTION
Turn power off at the circuit breaker
before working with or near high voltage.
For any unexpected operation:
1. Check DIP switch settings.
2. Make sure the switches are set according to the defined
settings in the DIP Switch Setting Chart.
Lights do not turn on with occupancy, and the following condition
exists:
• PIR Activity LED does not flash:
1. Check that the circuit breaker has been turned back on.
2. Check all sensor wire connections.
3. Make sure that the LED is enabled (DIP switch 6 on) and that the
PIR Sensitivity is set for Max/Smartset (DIP switch 7 on).
4. Check for line voltage input to the sensor.
- If line voltage is present, replace the sensor.
- If line voltage is not present, check line wiring.
• PIR Activity LED flashes:
1. If the sensor’s Light Level feature has been turned on, the lights
connected to the Light Level Output might be held off because of
the level of ambient light in the controlled area. To test whether
the Light Level adjustment is the problem, cover the PIR lens and
PIR Activity LED (see diagram) with your hand to see if the lights
turn on. If the lights turn on, the Light Level setting was keeping
the lights off (see “Sensor Adjustment” for readjustment).
2. Check all sensor wire connections.
Lights do not turn off automatically:
1. The sensor may be experiencing activations from outside
the controlled area or from some type of interference
(see “Unwanted Sensor Activations” below).
2. Check all sensor wire connections.
3. Turn sensitivity and time delay to minimum
and allow the sensor to time out.
If the lights turn off, the sensor is working properly (see
“Sensor Adjustment” for readjustment of sensor).

Unwanted Sensor Activations (LED flashes):
• Possible causes
1. Improper sensor location or inadequate masking causing
detection outside of desired coverage area.
2. The PIR sensitivity may be set too high.
3. Sensor located too close to HVAC or VAV vents with heavy air flow.
• Possible solutions
1. Mask the lens to reduce PIR coverage (see “Masking
the PIR Lens”, under “Placement Guidelines”).
2. Set DIP switch 7 to OFF and see if the excess activations stop.
3. Relocate the sensor.
ORDERING INFORMATION
Catalog # Description
CI-355 Passive Infrared Occupancy Sensor, Line Voltage, 360° lens, up
to 1200 square ft., with light level sensor
CI-355-1 Passive Infrared Occupancy Sensor, Line Voltage, 360° high
density/reduced range lens, up to 500 square ft., with light level
sensor
CA-1 Cosmetic adapter for ceiling installation with 4” square
j-box or Wiremold #V5752 box.
WARRANTY INFORMATION
Watt Stopper/Legrand warranties its products to be free of defects in materials
and workmanship for a period of five (5) years. There are no obligations or
liabilities on the part of Watt Stopper/Legrand for consequential damages arising
out of or in connection with the use or performance of this product or other
indirect damages with respect to loss of property, revenue, or profit, or cost of
removal, installation or reinstallation.
2800 De La Cruz Boulevard, Santa Clara, CA 95050
Technical Support: 800.879.8585
www.wattstopper.com
03490r2 03/2007
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