Enerlites MPC-50L 360 Degree Low Voltage PIR Occupancy Ceiling Sensor Installation Guide
- June 14, 2024
- ENERLITES
Table of Contents
Enerlites MPC-50L 360 Degree Low Voltage PIR Occupancy Ceiling Sensor
Specifications
- PIR Coverage : Sensitivity Adjustment – 50% or 100% (DIP switch)
- Coverage : Up to 1200 ft2
Product Information
The MPC-50L is a passive infrared occupancy sensor designed for indoor use
only. It operates on 24V power provided by the MPP-24 Power Packs. The sensor
has a coverage radius of 22 feet when mounted at a height of 8 feet.
Installation Instructions
Location
The MPC-50L should be mounted in a location that is free from obstructions
such as furniture, plants, walls, and vibration. It should be placed a minimum
of 4 feet away from any air vents and should not be mounted close to a heat
source. When mounting directly to a ceiling light fixture, ensure that the
lens of the sensor is below the lowest point of the fixture. For optimal
performance, it is recommended to install the sensor in the walkways of an
open office space.
Wiring Directions
- The MPC-50L requires the MPP-24 power pack (not included). Each power pack can support up to 6 sensors. If using more than 6 sensors, additional power packs are required.
- Connect the MPC-50L to the MPP-24 or other Class 2 Power Packs using the +24VDC terminals.
Light Level Adjustment
The sensor can be adjusted to operate at the desired level of ambient
light.
Product Usage Instructions
Helpful Hints
- Make sure the sensor’s view of the entrance is not blocked when the door is open.
- Program a longer time out to avoid frequent lights turning on/off.
- Avoid mounting sensors close to air vents.
- Cover the main walkways for better coverage.
- Avoid positioning the sensor to look out the door of the space.
Open Office or Classroom Area Coverage
To achieve complete coverage in an open office area, install multiple
sensors with at least 15% overlap between each adjacent sensor’s coverage
area. The sensors should cover the primary occupant’s desk, the entrance, and
any other areas with heavy traffic.
FAQ
Can I use the MPC-50L outdoors?
No, the MPC-50L is designed for indoor use only.
How far can the MPC-50L cover?
The MPC-50L can cover an area of up to 1200 ft2.
Can I adjust the sensitivity of the sensor?
Yes, the sensitivity can be adjusted to either 50% or 100% using the DIP
switch.
MPC-50L 360° Passive Infrared Low Voltage Occupancy Sensor
SPECIFICATIONS
- Voltage……………………………………………………………………………………………24VDC
- Current Consumption………………………………………………………………………….. 9mA
- Power Supply (Not included)………………………………………… MPP-24 Power Packs
- Operating Temperature………………………………………………32° to 131°F (0°to 55°C)
- Adjustable Light Level………………………………………………………………..10FC-150FC
- Adjustable Time Delay……………………………………………. 5 sec.-30min (DIP switch)
- Walk-Through Mode……………………………………3 minutes if no activity after 30 sec.
- Test Mode………………………………. 5 sec. upon initial power-up or DIP switch reset
PIR Coverage:
- Sensitivity Adjustment……………………………………………. 50% or 100% (DIP switch)
- Coverage………………………………………………………………………………..Up to 1200 ft2
DESCRIPTION
The MPC-50L 360° occupancy sensor uses advanced PIR technology to turn on the lights when motion is detected and keep the lights on when movement is present. The sensor will automatically turn off the lights if no movement is detected within the amount of time selected in the time delay. The built-in “walk-through” mode could offer extra energy saving and switch the lights off in 3 minutes when the room becomes unoccupied after the first 30 seconds of the initial detection.
The MPC-50L operates on 24V powered by MPP-24 Power Packs.
C0VERAGE
The MPC-50L provides a 360° coverage pattern, up to 1200 square feet. The diagram below shows the range of detection with the sensor mounted at a height of 8 feet. The sensor is designed to detect heat-emitted movements across its range of view. Obstructions and low levels of movement may hinder the level of detection.
Location : The device should be mounted in a location free of obstruction from furniture, plants, walls, and vibration (see Figure 1). The sensor must be mounted a minimum of 4 ft. away from any air vents. Avoid mounting the sensor close to the heat source. When mounting directly to a ceiling light fixture, the lens of the sensor must be below the lowest point of the fixture. MPC-50L is designed for a ceiling height of about 8-10 feet. Because of the umbrella-shaped coverage pattern, mounting above or below the recommended height could reduce coverage range and sensitivity. Another important thing to note is that it’s not necessary to have occupancy sensor coverage on every square inch of space in any particular room. These spaces generally have many people moving around in them.
The best location to install multiple MPC-50L is usually in the walkways of an open office space (see Figure 2).
Helpful hints:
- Make sure that the sensor’s view of the entrance will not be blocked by the door when it is open.
- Program a longer time out to avoid the lights constantly turning on/off.
- Do not mount sensors close to air vents.
- Cover the main walkways.
- Try to avoid having the sensor looking out the door of the space
Open Office or Classroom Area Coverage:
- To get complete coverage in an open office area, install multiple sensors so that there is at least 15% overlap with each adjacent sensor’s coverage area.
- The sensors should cover the primary occupant’s desk, the entrance, and any other areas with heavy traffic.
WARNING: Turn the POWER OFF at the circuit breaker before installing the sensor
Read and understand these instructions before installing. This device is intended for installation by the National Electric Code and local regulations. It is recommended that a qualified electrician perform this installation. Make sure to turn off the circuit breaker or fuse(s) and make sure the power is off before wiring the device. Use copper wire only, or equivalent.
**WIRING DIRECTIONS
**
The MPC-50L requires the MPP-24 power pack (not included). Each power pack
supports up to 6 sensors. When using more than 6 sensors, additional power
packs are required.
Connect the low voltage:
- Connect the RED wire from the power pack to the +24V terminal on the sensor.
- Connect the BLACK wire from the power pack to the Common terminal on the sensor.
- Connect the BLUE wire from the power pack to the Control Out terminal on the sensor.
To add a MANUAL SWITCH such as the Momentary Toggle Switch:
- Connect the Gray wire on the Powerpack to 24VDC on the sensor.
- Connect one wire from the momentary switch to the Common terminal on the sensor, and the other wire from the momentary switch to the Manual terminal on the sensor.
LIGHT LEVEL ADJUSTMENT
The sensor may be adjusted to operate at the desired level of ambient light. To do so, turn the dial to point the arrow toward the “-” sign for the sensor to detect motion and operate during low light or no light. Point the arrow toward the “+” sign for sensor to operate when there’s more light in the area or even during daylight.
NOTE : The light level is adjustable only when the time delay is set at or above 30 seconds.
SENSOR ADJUSTMENT
INSTALLATION
Using an Octagonal J-box (not included)
- Pull the low-voltage wires from the power pack into the J-Box through the conduit knockout.
- Connect the low-voltage wires to the appropriate terminals on the sensor.
- Loosen the appliance mounting screws attached to the J-Box.
- Align the sensor to the J-Box so that the mounting screws on the box match the keyholes on the sensor’s rear housing.
- Push the sensor up into the J-Box and twist it so that the mounting screws are seated in the keyhole slots.
- Tighten the two screws to secure the sensor to the J-Box.
- Snap-on the front cover onto the sensor.
TESTING OCCUPANCY SENSOR
To enter Test Mode set DIP switches 2,3,4 to the OFF position, then toggle
DIP switch #3 ON and back to the OFF position. This provides a 5-minute test
period. During the test period, the Time Delay is only 5 seconds
- Ensure the PIR Activity is enabled, red LED flashes, Hold ON mode is OFF (DIP 9 switch OFF) and PIR Sensitivity is set to MAX (DIP switch 1 ON).
- Ensure the Time Delay is set for Test Mode* using the “ 5 seconds/Autoset” setting. (DIP switches 2, 3 & 4 are OFF).
- Ensure that the Light Level is at default (maximum). See the Light Level Feature section of this document for instructions.
- Remain still. The red LED should not flash. The green LED and load are ON, and the lights should turn off after 5 seconds. (If not, see“Troubleshooting.”)
- Move in the front of the coverage area. The lights should turn on automatically.
When testing and adjustment are complete, reset the DIP Switches and Light Level to the desired settings, and put the front cover back on the sensor.
Note : There is a 40-second warm-up period when power is first applied. Use a small screwdriver to open the front cover and make changes to the settings. The pre-set time delay is Test mode and the light level is set at\ maximum
DIP SWITCH SETTING
The MPC-50L has 9 DIP switches under the cover. They are used to set
sensitivity, time delay, walk-through mode, vacancy mode, audible, visual
alarm, and Hold ON feature settings.
Sensitivity setting: DIP switch 1
- 50% -This setting will decrease the amount of area the sensor will cover to half the range
- 100%, the maximum range of the sensor’s coverage is 1200 square feet, see “coverage pattern”
Time delay: DIP switch 2,3,4
The time delay is set with Dip switches 2, 3, and 4, from 15 seconds to 30
minutes. When there is no movement detected by the sensor, the lights will
automatically turn off after the selected time delay has expired. Autoset
features record and analyze the occupancy patterns and provide optimal time
delay from 5s to 30 minutes. AutoSet feature starts immediately and
continually updates its time to ensure that the sensor provides all you need.
Walk-through mode: Switch 5
With Walk-through mode enabled, the sensor turns lights off automatically
in three minutes when no movement is continued afterthe first 30 seconds. The
time delay has to be set to 5 minutes or more to use the walk-through feature.
Vacancy Mode: Switch 6
The “Manual ON” function is achieved by using a momentary switch, such as
model number 91245 (not included) from Enerlites. The switch may be connected
to the sensors. The “Manual ON” and “Common” or with Gray wire from the power
pack and +24VDC on the sensor. The load can operate by pressing the momentary
switch. The operation of the sensor connected to the manual switch depends on
the DIP switch 6 setting.
- Vacancy ON: In this mode, press the momentary switch to turn on the load. The movement will keep the load on.
- Automatic On: In this mode, the sensor will turn the load ON automatically when motion is detected.
- A momentary switch provides the following additional functionality:
- The light can be turned on manually by pressing the momentary switch at any time. The lights will stay on as long as movement is detected. If no movement is detected when the programmed time delay has expired, the lights will turn off automatically.
- Turn the lights OFF manually.
- When the lights are turned OFF by the manual switch, the lights will stay off until the time delay has expired. After the time delay has expired, the sensor will switch back to Automatic ON mode.
- Pressing the manual switch again will turn the lights on and the sensor will be switched to the Automatic ON mode.
Audible Alert: Switch 7
When this feature is enabled you can hear a “tick” from the buzzer 1 minute
before the time delay expires, again at 30 seconds, and again at 10 seconds,
indicating that the lights are about to turn off automatically.
Visible Alert: Switch 8
When this feature is enabled the lights attached to the load will flash once
as a reminder, 1 minute before the time delay expires.
Hold ON: Switch 9
This is the OVERRIDE setting. Set DIP switch 9 to the ON position to override.
The green and red LEDs will be lit and will stay on for the duration of the
override. This bypasses the light level, and occupancy detection, and the
manual ON functions will be invalid.
TROUBLESHOOTING
NOTE : There is a 40-second warm-up time at the initial power-up. LED does not blink:
-
1. Check that the circuit breaker has been turned back on. - Make sure that the PIR Sensitivity is set to 100% (DIP switch 1 ON).
- Check the wire connection between all sensors and the power pack.
- Check for 24V input to the sensor.
- If 24V is present, replace the sensor.
- If 24V is not present, check that high voltage is present in the power pack. If it is, replace the power pack.
LED blinks but lights do not turn ON:
- Check the “Light” setting. If the arrow is pointed to the “-“position, the area needs to be dark enough for the sensor to operate. Cover the light sensor lens to simulate darkness. If the light turns ON, the light level setting needs to be adjusted.
- Make sure the wires are connected and the bulbs are working.
- Check for obstructions in the lens cover.
- Make sure that power to the sensor has been ON continuously for at least one minute. Wait for the warm-up period to end.
- Check for 24VDC at the power pack.
Lights do not turn OFF automatically:
- If there is no motion from people or equipment in the sensor’s view but the LED blinks, look for any nearby source of infrared energy (heat) in motion, such as turbulent air from a heating or cooling supply.
- Mount the sensor so that its lens is below the edge of the fixture and does not directly view the lamps.
- Move the air supply away from the sensor, or move the sensor.
- Verify the time delay settings in switches 2-4. Ensure that the time delay is set to the desired delay and that there is no movement within the sensor’s view for that period.
- Check sensor wire connections.
- Disconnect the power pack’s blue wire:
- If the lights do not turn off, replace the power pack.
- If the lights turn off, the problem may be in the sensor. To check:
- Reconnect the blue wire.
- Turn sensitivity and time delay to a minimum and test the functionality. If the lights turn off, the sensor is working properly.
WARRANTY INFORMATION
This device is warranted to be free of material and workmanship defects for 2 years from the date of purchase. Original receipt or proof of purchase from an authorized retailer must be presented upon warranty claim. ALL claims must be verified and approved by Enerlites, Inc. Warranties from other Enerlites products may vary. This warranty is nontransferable and does not cover normal wear and tear or any malfunction, failure, or defect resulting from misuse, abuse, neglect, alteration, modification, or improper installation. To the fullest extent permitted by the applicable state law, Enerlites shall not be liable to the purchaser or end user customer of Enerlites products for direct, indirect, incidental, or consequential damages even if Enerlites has been advised of the possibility of such damages. Enerlites’ total liability underthis or any other warranty, express or implied, is limited to repair, replacement or refund. Repair, replacement or refund are the sole and exclusive remedies for breach of warranty orany other legal theory.
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