wiring an occupancy sensor

[charliebarns]

Hey guys,

Based on other posts in the forums I picked up a Leviton Ultrasonic Occupancy sensor model # ODC10-U0W and the power pack to power it ODP13-10. The power pack wires directly to 120V and provides 24VDC ad 33mA out to the sensor. This system is designed to control a 120V load (ie: light) when occupancy is sensed. the occupancy sensor itself has 3 wires, Red=24V Black= LV return path, and blue for control. When occupancy is sensed, the blue wire provides 24VDC back to the power pack which turns the relay on inside the power pack allow 120V to pass through to the load. I'm trying to figure out how to use this in a contact closure type situation to tie it into my OPII but I'm a bit lost. Anyone have any ideas?

Link to sensor: http://assets.twacomm.com/assets/pdf/24423.pdf

I've also included a copy of the wiring diagram.


thanks

CB

 

[BraveSirRobbin]

I'm not familiar with an "OPII". Is it a digital input? Can't it just use the relay controls from this sensor?

 

[WayneW]

OPII = HAI OmniPro II

You should be able to simply hook the common (blue/white) and the NO (yellow/white) to an HAI input/zone.

 

[charliebarns]

OPII = HAI OmniPro II

You should be able to simply hook the common (blue/white) and the NO (yellow/white) to an HAI input/zone.

I'm not sure why the diagram shows those three wires, I think maybe the instructions are common to a few sensors and this one does not have the HVAC relay built in. So what mine has is the Red, Black and Blue only which connects to the Power Supply.

 

[WayneW]

Based on other posts in the forums I picked up a Leviton Ultrasonic Occupancy sensor model # ODC10-U0W and the power pack to power it ODP13-10.

Got any other part numbers? Leviton.com gets no hits on those part numbers, so we cannot look up exactly what you have. Or is there a magic decoder ring for the model numbers? Leviton has a ton of occupancy sensors.

The instruction sheet from http://www.leviton.com/OA_HTML/ibeCCtpItmD...mp;item=364749# shows the 3 HVAC wires on the power pack, not the actual sensor.

 

[charliebarns]

Based on other posts in the forums I picked up a Leviton Ultrasonic Occupancy sensor model # ODC10-U0W and the power pack to power it ODP13-10.

Got any other part numbers? Leviton.com gets no hits on those part numbers, so we cannot look up exactly what you have. Or is there a magic decoder ring for the model numbers? Leviton has a ton of occupancy sensors.

The instruction sheet from http://www.leviton.com/OA_HTML/ibeCCtpItmD...mp;item=364749# shows the 3 HVAC wires on the power pack, not the actual sensor.

I know, I haven't had any success finding the docs online. It is an ODC10-U0W. Maybe I'll have to pick one up that has the relay built in for HVAC and just scrap this one

CB

 

[WayneW]

Based upon what you said about what you had, you should be able to take the coil from a 24VDC relay and hook it to the blue and black (or maybe the blue and red) wire. But since there is uncertainty here, be extra careful. Assume the wires contain 110VAC until proven otherwise with a meter.

Do you have any idea if the timer logic for the light is in the occupancy sensor or in the power pack? If the duration timer logic is in the power pack, the blue wire could signal briefly whenever it sees motion. Then the power pack decides to keep the high voltage enabled for X minutes/hours. That would mean your OPII gets a lot of short signals that don't match up to when the light is on.

 

[BraveSirRobbin]

The other thing you could do is get a 120 volt AC coil relay, connect that to the 'load' wires, then use the contacts off of it for your Omni II input.

A relay such as THIS one has a large resistance coil so current is minimal (0.04 amps) and has terminals that can easily be used with crimp spade type lugs (yes the 40 amp capability of the contacts is overkill), and it's under eight bucks shipped.

I would probably mount this and the power supply in some type of junction box and have 'clamps' on the exiting wiring.

 

[charliebarns]

Based upon what you said about what you had, you should be able to take the coil from a 24VDC relay and hook it to the blue and black (or maybe the blue and red) wire. But since there is uncertainty here, be extra careful. Assume the wires contain 110VAC until proven otherwise with a meter.

Do you have any idea if the timer logic for the light is in the occupancy sensor or in the power pack? If the duration timer logic is in the power pack, the blue wire could signal briefly whenever it sees motion. Then the power pack decides to keep the high voltage enabled for X minutes/hours. That would mean your OPII gets a lot of short signals that don't match up to when the light is on.

Thanks for the replies. I know the timer logic is in the occupancy sensor and can be set to a minimum of 8 seconds. When motion is detected it sends 24V down the blue wire. So if I did use a 24V relay I could potentially use it to provide the contact closure to the Omni Pro II, just one extra step.

 

[broconne]

Based upon what you said about what you had, you should be able to take the coil from a 24VDC relay and hook it to the blue and black (or maybe the blue and red) wire. But since there is uncertainty here, be extra careful. Assume the wires contain 110VAC until proven otherwise with a meter.

Do you have any idea if the timer logic for the light is in the occupancy sensor or in the power pack? If the duration timer logic is in the power pack, the blue wire could signal briefly whenever it sees motion. Then the power pack decides to keep the high voltage enabled for X minutes/hours. That would mean your OPII gets a lot of short signals that don't match up to when the light is on.

Thanks for the replies. I know the timer logic is in the occupancy sensor and can be set to a minimum of 8 seconds. When motion is detected it sends 24V down the blue wire. So if I did use a 24V relay I could potentially use it to provide the contact closure to the Omni Pro II, just one extra step.

Did you make any progress with your occupancy sensor? I am thinking of pre-wiring for some occupancy sensors but I am not concerned that is a mistake because I can't find a single occupancy sensor that works off of 22/4.

 

[charliebarns]

Based upon what you said about what you had, you should be able to take the coil from a 24VDC relay and hook it to the blue and black (or maybe the blue and red) wire. But since there is uncertainty here, be extra careful. Assume the wires contain 110VAC until proven otherwise with a meter.

Do you have any idea if the timer logic for the light is in the occupancy sensor or in the power pack? If the duration timer logic is in the power pack, the blue wire could signal briefly whenever it sees motion. Then the power pack decides to keep the high voltage enabled for X minutes/hours. That would mean your OPII gets a lot of short signals that don't match up to when the light is on.

Thanks for the replies. I know the timer logic is in the occupancy sensor and can be set to a minimum of 8 seconds. When motion is detected it sends 24V down the blue wire. So if I did use a 24V relay I could potentially use it to provide the contact closure to the Omni Pro II, just one extra step.

Did you make any progress with your occupancy sensor? I am thinking of pre-wiring for some occupancy sensors but I am not concerned that is a mistake because I can't find a single occupancy sensor that works off of 22/4.

Yes you can either use the method above (use a relay that is closed by the occupancy sensor as a dry contact to your M1 or OPII) or you can pick-up the Leviton ODC20-URW which has the relay built in. I'll snap a picture of both within the next couple of days so you can see the difference. In either case you have to use a 120V -> 24V power pack. They're cheap, it just adds an extra step.

CB

 

[broconne]

Based upon what you said about what you had, you should be able to take the coil from a 24VDC relay and hook it to the blue and black (or maybe the blue and red) wire. But since there is uncertainty here, be extra careful. Assume the wires contain 110VAC until proven otherwise with a meter.

Do you have any idea if the timer logic for the light is in the occupancy sensor or in the power pack? If the duration timer logic is in the power pack, the blue wire could signal briefly whenever it sees motion. Then the power pack decides to keep the high voltage enabled for X minutes/hours. That would mean your OPII gets a lot of short signals that don't match up to when the light is on.

Thanks for the replies. I know the timer logic is in the occupancy sensor and can be set to a minimum of 8 seconds. When motion is detected it sends 24V down the blue wire. So if I did use a 24V relay I could potentially use it to provide the contact closure to the Omni Pro II, just one extra step.

Did you make any progress with your occupancy sensor? I am thinking of pre-wiring for some occupancy sensors but I am not concerned that is a mistake because I can't find a single occupancy sensor that works off of 22/4.

Yes you can either use the method above (use a relay that is closed by the occupancy sensor as a dry contact to your M1 or OPII) or you can pick-up the Leviton ODC20-URW which has the relay built in. I'll snap a picture of both within the next couple of days so you can see the difference. In either case you have to use a 120V -> 24V power pack. They're cheap, it just adds an extra step.

CB

Are you running 22/4 from the power pack near your HAI to the sensor? Or can you not run 24 VDC over 22/4? I am obviously at the theory stage rather than the implementation phase.
Also, in your search for occupancy sensors did you find any that were wall/corner mounted rather than ceiling mounted?

 

[charliebarns]

Based upon what you said about what you had, you should be able to take the coil from a 24VDC relay and hook it to the blue and black (or maybe the blue and red) wire. But since there is uncertainty here, be extra careful. Assume the wires contain 110VAC until proven otherwise with a meter.

Do you have any idea if the timer logic for the light is in the occupancy sensor or in the power pack? If the duration timer logic is in the power pack, the blue wire could signal briefly whenever it sees motion. Then the power pack decides to keep the high voltage enabled for X minutes/hours. That would mean your OPII gets a lot of short signals that don't match up to when the light is on.

Thanks for the replies. I know the timer logic is in the occupancy sensor and can be set to a minimum of 8 seconds. When motion is detected it sends 24V down the blue wire. So if I did use a 24V relay I could potentially use it to provide the contact closure to the Omni Pro II, just one extra step.

Did you make any progress with your occupancy sensor? I am thinking of pre-wiring for some occupancy sensors but I am not concerned that is a mistake because I can't find a single occupancy sensor that works off of 22/4.

Yes you can either use the method above (use a relay that is closed by the occupancy sensor as a dry contact to your M1 or OPII) or you can pick-up the Leviton ODC20-URW which has the relay built in. I'll snap a picture of both within the next couple of days so you can see the difference. In either case you have to use a 120V -> 24V power pack. They're cheap, it just adds an extra step.

CB

Are you running 22/4 from the power pack near your HAI to the sensor? Or can you not run 24 VDC over 22/4? I am obviously at the theory stage rather than the implementation phase.
Also, in your search for occupancy sensors did you find any that were wall/corner mounted rather than ceiling mounted?

I've got the power pack mounted in the octagonal box for the occ sensor and then I ran 22/4 from the sensor back to the HAI panel. I didn't come across any ultrasonic sensors that were wall mounted, just the ceiling sensors.

CB

 

[charliebarns]

Also have a look at the sensor switch CM-9....

 

[broconne]

Based upon what you said about what you had, you should be able to take the coil from a 24VDC relay and hook it to the blue and black (or maybe the blue and red) wire. But since there is uncertainty here, be extra careful. Assume the wires contain 110VAC until proven otherwise with a meter.

Do you have any idea if the timer logic for the light is in the occupancy sensor or in the power pack? If the duration timer logic is in the power pack, the blue wire could signal briefly whenever it sees motion. Then the power pack decides to keep the high voltage enabled for X minutes/hours. That would mean your OPII gets a lot of short signals that don't match up to when the light is on.

Thanks for the replies. I know the timer logic is in the occupancy sensor and can be set to a minimum of 8 seconds. When motion is detected it sends 24V down the blue wire. So if I did use a 24V relay I could potentially use it to provide the contact closure to the Omni Pro II, just one extra step.

Did you make any progress with your occupancy sensor? I am thinking of pre-wiring for some occupancy sensors but I am not concerned that is a mistake because I can't find a single occupancy sensor that works off of 22/4.

Yes you can either use the method above (use a relay that is closed by the occupancy sensor as a dry contact to your M1 or OPII) or you can pick-up the Leviton ODC20-URW which has the relay built in. I'll snap a picture of both within the next couple of days so you can see the difference. In either case you have to use a 120V -> 24V power pack. They're cheap, it just adds an extra step.

CB

Are you running 22/4 from the power pack near your HAI to the sensor? Or can you not run 24 VDC over 22/4? I am obviously at the theory stage rather than the implementation phase.
Also, in your search for occupancy sensors did you find any that were wall/corner mounted rather than ceiling mounted?

I've got the power pack mounted in the octagonal box for the occ sensor and then I ran 22/4 from the sensor back to the HAI panel. I didn't come across any ultrasonic sensors that were wall mounted, just the ceiling sensors.

CB

So just to verify, you are running 110VAC to every location you have an occupancy sensor?