Marktime 6420 User manual

♦GENERAL INFORMATION
SPECIFICATIONS:
Voltage: 24VDC
Current Consumption: 9mA
Power Supply: 6400 Power Pack
Operating Temp: 0°C to 55°C (32°F to 131°F )
Adjustable Time Delay: 5 Sec (test mode) to 30 Min
Walk-Through Mode 3 minutes if no activity in 30 seconds
PIR Adjustment: 50% or 100% (Dip Switch 1)
Light Level Adjustment: 100 Lux - Daylight (Trimpot)
PIR Coverage: Up to 1200 ft2
NOTES:- Keep these instructions available for future reference.
- Indoor use only.
DESCRIPTION:
The Model 6420, 360° PIR Occupancy
Sensor turns lights on and off
automatically based on thermal motion
detection. It includes a light level
adjustment that will keep lights off if
there is enough daylight already present
in the coverage area. After no
movement is detected for the set time
delay, the lighting is switched off. A
"walk-through" mode is available that will turn the lights off after only 3 minutes if no
movement is detected after 30 seconds of an occupancy detection. This feature is well
suited for hallways and closets.
The Model 6420 can also be set to automatically adjust the time delay based on traffic
patterns in the coverage area. It works well with the Model 6400 Power Pack.
♦COVERAGE PATTERN
The 6420 sensor provides a 360° coverage pattern up to 1,200 sq-ft. The coverage
shown in Figure-1 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.
♦PLACEMENT GUIDELINES
Depending upon obstacles such as furniture or partitions, the area of coverage may be
more or less than the sensing distances shown in the coverage pattern (see Figure-1).
This must be considered when planning the number of sensors and their placement. It
is also recommended to place the sensor 4-6 feet away from air supply ducts as rapid
air currents or the differences in temperatures could cause false activations.
Mount the sensor to the ceiling. The 6420 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 as you decrease the mounting height, you decrease the range and increase
the sensitivity to smaller motions. Conversely, when you increase the mounting 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 model 6420 occupancy sensor in a closed office is off-
center (see Figure-2). Avoid placing the sensor directly in line with an open door
through which it has a clear view out, as the sensor may detect people walking by.
For open office area coverage, install multiple sensors so that there is an overlap with
each adjacent sensor's coverage area. (see Figure-3)
♦WIRING
CAUTION:BE SURE TO DISCONNECT POWER FROM THE CIRCUIT BREAKER
BEFORE WIRING!
NOTE:EACH 6400 POWER PACK CAN SUPPLY POWER FOR UP TO SIX 6420
SENSORS. WHEN USING MORE THAN SIX SENSORS, MULTIPLE POWER PACKS ARE
REQUIRED.
Standard Wiring (Low Voltage Connections):
+24VDC (RED) from power pack to "+24VDC" terminal on sensor.
Common (BLACK) from power pack to "Common" terminal on sensor.
Control (BLUE) from power pack to "Control Out" terminal on sensor.
NOTE:TO ADD A MANUAL MOMENTARY SWITCH, CONNECT ONE SIDE OF THE
SWITCH TO THE "COMMON" TERMINAL ON THE SENSOR AND CONNECT THE OTHER
SIDE OF THE SWITCH TO THE "MANUAL ON" TERMINAL ON THE SENSOR.
♦INSTALLATION
CAUTION:INSTALLATION BY A LICENSED ELECTRICIAN IS RECOMMENDED.
INSTALLATION AND USE OF THIS EQUIPMENT SHOULD BE IN ACCORDANCE WITH
PROVISIONS OF THE U.S. NATIONAL ELECTRICAL CODE, APPLICABLE LOCAL CODES,
AND PERTINENT INDUSTRY STANDARDS.
CAUTION:USE THIS DEVICE WITH COPPER WIRE ONLY.
CAUTION:IMPROPER WIRING CAN CAUSE DAMAGE TO THE POWER PACK,
LIGHTING SYSTEM, OCCUPANCY SENSOR(S), AND OTHER CONTROL DEVICES.
NOTE:MOST APPLICATIONS REQUIRE UL LISTED, 18-22 AWG, 3-CONDUCTOR,
CLASS 2 CABLE FOR LOW-VOLTAGE WIRING.
WARNING: TO AVOID FIRE, SHOCK, OR DEATH, TURN OFF POWER
AT CIRCUIT BREAKER OR FUSE AND TEST THAT POWER IS OFF
BEFORE WIRING SENSORS OR POWERPACKS!
1) Verify power has been turned off at the circuit breaker.
2) Refer to the WIRING & PLACEMENT GUIDELINES sections for planning
and laying out the low-voltage wiring, power pack(s), and sensor(s).
3) Pull the low-voltage wires from the power pack into the octogonal junction
box through the conduit knockout (See Figure-5).
4) Connect the low-voltage wires to the appropriate wires on the sensor.
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5) Loosen the appliance mounting screws attached to the octogonal junction
box.
6) Align the sensor in the junction box so that the mounting screws on the
box line up with the slotted holes on the sensor's housing.
7) Push the sensor up into the junction box carefully and twist it so that the
mounting screws are seated in the slots.
8) Tighten the two screws to secure the sensor to the junction box.
9) Adjust the settings of the sensor if required by accessing the controls on
the housing (see Figure-6). See the Settings Section for customizing the
performance of the sensor.
10) Snap the front cover onto the sensor housing and restore circuit power.
NOTE:THERE IS A 45 SECOND WARM-UP PERIOD WHEN POWER IS FIRST APPLIED.
♦SETTINGS
1) The 6420 sensor has 9 DIP switches under the cover that can be used to adjust the
sensitivity, time delay, walk-through mode, vacancy mode, audible alarm, visual alarm,
and Hold ON features. See Figure-7 for all available DIP switch settings and defaults.
NOTE:THE SENSORS ARE PRESET AT THE FACTORY TO ALLOW FOR QUICK
INSTALLATION IN MOST APPLICATIONS.
NOTE:BEFORE MAKING ADJUSTMENTS, BE SURE OFFICE FURNITURE IS
INSTALLED, LIGHTING CIRCUITS ARE TURNED ON, AND HVAC SYSTEMS ARE IN THE
OVERRIDDEN/ON POSITION.
Sensitivity Setting: Switch 1
50% - Sensor's coverage is smaller; about half of the widest range.
100% - Maximum range of the Sensor's PIR coverage (1,200 sq-ft).
Time Delay: Switches 2, 3, 4
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 set time delay, the sensor will turn the lights off. The sensor can select the time
delay using Autoset, or you can select a fixed time delay.
Autoset records occupancy patterns and uses this history to choose an optimal time
delay from 5 seconds to 30 minutes. Autoset behavior starts immediately and is refined
continually has data is collected.
Walk Through Mode: Switch 5
Turns the lights off 3 minutes after initially occupied, if no motion is detected after the
first 30 seconds. If motion continues beyond the first 30 seconds, the selected time
delay will apply. Only when the fixed time delay is set greater than or equal to 5 minutes
is the walk-through mode in effect.
Vacancy Mode: Switch 6
The manual-on function is achieved by using a momentary switch. The switch is
connected to the sensor's "Manual ON" and "Common" terminals. When the
momentary switch is pressed, the load will revert to the opposite state. With the
vacancy mode enabled, the momentary switch must be pressed upon entering the room
to turn the lights on. When the room is unoccupied and the time delay ends, the
momentary switch must be pressed to turn the lights on again, if there is no movement
detected within the first 30-second period.
With the vacancy mode disabled, the lights can be turned on using the momentary
switch and will stay on as long as motion is detected. After which, the set time delay will
apply. Pressing the momentary switch while the load is on will turn the load off and as
long as motion is detected, the load will stay off. 5 minutes after no motion is detected,
the sensor will revert back to the automatic-on mode.
Audible Alert: Switch 7
When this feature is enabled, 1 minute, 30 seconds, or 10 seconds before the time
delay expires, the sensor buzzer will "chirp" indicating the time delay is almost over.
Visible Alert: Switch 8
When this feature is enabled, 1 minute before the time delay expires, the sensor will
flash the load once indicating the time delay is almost over.
Hold ON: Switch 9
When this feature is enabled, all sensing functions are bypassed and a momentary
switch (if installed) will be invalid. The load will stay on until the DIP switch is disabled.
Ambient Light Level Adjustment
To adjust the ambient light level (to accomodate amount of
daylight entering the room), rotate the "Light" trimpot as needed.
Turn towards the "-" if enough daylight enters the room for it's
intended use (lights will not turn on when motion is detected).
Turn towards the "+" if lights should turn on regardless of amount
of available daylight. Range is 100Lux to Daylight.
♦TROUBLESHOOTING
Lights to not turn on with occupancy.
PIR Activity LED does not flash:
1) Check that the circuit breaker has been turned back on.
2) Be sure that the PIR Sensitivity is set for 100% (DIP Switch 1 to ON)
3) Check all sensor and power pack wire connections.
4) Check for 24VDC input to the sensor between the red and the black low-voltage
wires.
●If 24VDC is present, replace the sensor.
●If 24VDC is not present, check the high-voltage connections to the power pack.
●If high-voltage connections are good, and high-voltage is present at the proper value,
replace the power pack.
PIR Activity LED flashes:
1) If the sensor's Light Level trimpot has been turned to the "-", the lights may be held
off by the sensor because of the available ambient light in the coverage area. In this
case, try covering the PIR Sensor lens and the PIR Activity LED with your hand. If the
lights turn on, readjust the Light Level trimpot towards the "+" as needed for the desired
operation.
2) Check all sensor and power pack wire connections.
3) Check for 24VDC at the power pack's Control (blue wire) connection to the sensor
while the sensor is activated. If there is no voltage, replace the sensor. If there is
voltage, replace the power pack.
Lights to not turn off automatically.
1) Sensor may be experiencing activations from some type of interference outside the
coverage area. (See Unwanted Sensor Activations below.)
2) Check all sensor and power pack wire connections.
3) Disconnect power pack blue wire.
●If lights do not turn off, replace the power pack and reconnect wiring.
●If lights turn off, the problem may be the sensor or wiring between the sensor and
power pack.
4) Reconnect the blue wire.
5) Turn sensitivity and time delay to minimum, and allow the sensor to time out.
●If lights turn off, the sensor is working properly. Adjust sensitivity and time delay for
the sensor.
Unwanted Sensor Activations (LED flashes).
Possible Causes:
1) Sensor located too close to HVAC or VAV vents with heavy air flow.
2) The PIR sensitivity may be set too high.
Possible Solutions:
1) Relocate the sensor.
3) Set PIR Sensitivity to 50% (DIP Switch 1 to OFF).
♦WARRANTY
Model 6420 360º Passive Infrared Low-Voltage Occupancy Sensor INSTRUCTIONS
THREE YEAR LIMITED WARRANTY
If this product fails because of a manufacturing defect within three years after purchase,
we will replace it at no charge. Our warranty does not cover damage caused by accident,
abuse, or misuse. We assume no further liability with respect to the sale or use of this
product.
This warranty is in lieu of all other warranties, expressed or implied, including the
warranty of merchantability. We make no warranty with respect to the fitness of any
goods for the user's particular application. This warranty gives you specific legal rights,
and you may also have other rights which vary from state to state.
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