This part is available from http://www.controlshvac.com
The OSC24VAC ceiling mount, low profile panoramic PIR Detector uses a Fresnel lens to provide up to 8 m coverage.
This passive infrared detector is designed to monitor a room and to transmit presence to a BMS via a dry contact
signal. The 24VAC operation makes the OSC24VA 100% compatible with standard BMS voltage system
This detector is suitable for occupancy detection of residential, factories, warehouses and office building.
- 24V AC Operating Voltage
- Operating current : 18mA. ( 0.4VA at 24VAC)
- Wall/ceiling installation
- PVC 2 part twist off
- Tamper Switch
- NO or NC alarm contact ( jumper selectable)
- Maximum coverage detecting distance: 1m to 8m (up to 24 square meter *)
- Detecting Angle : 360deg
- Self-testing start-up time 30 to 60 sec
- Operation temperature -10C to +50C
- Alarm indicator: red LED ( can be jumper deactivated)
- Alarm output: N.C. or N.O AC/DC 28V , 100mA
- Tamper output: N.C . or N.O.,DC28V, 100mA
- Coverage axis : 11 far, 8 middle, 5 vicinities
- Dual infrared sensor
- Operating Humidity: up to 95 % RH non condensing
- Anti RF interference: 1OMHz-1 GHz 20V 1m
- Outline Size: 105mm diameter * 33 mm high ( with base)
- Installation distance or height: 2.5m to 7m (recommended)
The relay output can be normally open (NO) or normally closed (NC) by selecting the proper jumper setting
To set the N.C. or N.O.output type according to the BMC
Short 1&2: for
Short 2&3 for : N.C.
Default is N.C (jumper on 2&3)
N.O. is open when no movement is detected
N.C. is closed when no movement is detected
Relay contact are rated at 100ma 28V AC-DC
Tamper contact is normally closed N.C. when the unit cover is on
Removing the cover will open the contact
Will enable or disable the LED
Short 1&2: for LED on
Short 1&2: for LED Off
Default is 1&2
WARNING : When LED is disabled, there will not be any light to show the sensor is working.
The Pulse jumper is used to adjust the sensitivity and anti- interference
Selecting the numbers of IR pulses required to trigger a valid alarm
(Normally not changed unless detection interference are present.)
Short 1&2 for 1 pulse sensitivity
Short 2&3 for 2 pulse sensitivity
Open (none) for 3 pulse sensitivity
Default is 1&2
After the device is powered up, (If the LED jumper is on position 1&2 the LED indicator will turn on)
For proper testing , the lens cover must be fully attached to the base
Testing without the lens cover will not work as the unit initializes itself and adjust the parameter in a learn fonction
Power the unit
Wait for one minute
On power up, the detector will be in self-test for approximately a minute (60 sec.)
After the self-diagnostic is over, the detector will start in normal operating.
Proceed to a walk test as a normal user would need to be detected.
If enabled, the red LED will flash every time it is detecting motion.
The OSC24VAC can be hooked up to many BMS systems
The most common usage is along with a VAV controller.
Contact to ground
If your VAV controller has a binary input that uses an NO/NC to ground contact for detection of state ( like in figure 1)
You can use the 24VAC from the VAV controller and route the ground signal to one of the the NO or NC contact.
The other side of the relay will return to the VAV controller input.
Set the NO/NC jumper on the OSC24VAC as per required by your BMS equipment
Ensure polarity is respected if your 24VAC power transformer is grounded
If your BMS system uses a totally isolated signal that shorts 2 wires that are not connected to the controller ground (like in figure 2)
You will need 4 conductors between the OSC24 and your BMS equipment
2 conductors for the 24VAV
2 conductors for the NO or NC contact
Polarity is irrelevant as the output relay is isolated from the power source.
This detector should not be used in life threatening detection situation
Please install and use the detector according to this manual
Don't touch the surface of sensor while the lens cover is off as it will affect the sensitivity of the detector.
Please cut power before cleaning
Use a soft cloth with alcohol if cleaning is required
Please user all safety precautions and personal protection while installing.
* Depending on obstacles, ambient lighting interference and radio interferences