Motor Control for HBJ800 – User Guide
Limit teaching, emergency bypass, motor and sensor wiring, troubleshooting, and LiftMaster remotes for the AutoVent HBJ800 motor control. Version V11.
About the motor control
The motor control is an advanced system that limits the rotations of the motor. It remembers the position the motor is at through power outages and is designed to stop the motor at the same spot each time.
Motor limits / Why doesn’t my motor go? V11
If the motor is against the Top limit, Teach Open’s LED is on. If it is against the Bottom limit, Teach Close’s LED will be on.
Setting the limit positions
To set the top position: press and hold the Teach Top and Open buttons. The motor will start. Hold the button in until the motor is near the end of its travel. Release slightly before the desired stopping position.
Setting the bottom limits is the same concept. Press and hold the Teach Bottom and Open buttons. Release near the end of the travel.
Depending on the installation, the motor coasts a little after it reaches the limit. You may need to try to set the limit slightly ahead so it stops correctly for your installation.
The teach LEDs flash when saving a new limit position.
You can also teach the limit position at any time by holding down a teach button for at least 3 seconds. The teach LEDs will flash after you release the button if the new limit position was recorded.
Running the motor from the box
Press the buttons directly above the open or close buttons to run the motor from the control box.
It’s the same as running it from the control terminals. The LEDs will illuminate whenever a signal is coming in to run the motor. If the motor does not run, it’s because the motor is against a limit position.
Emergency contactor bypass
When you are installing, or if there is a rotation sensor that doesn’t work, you can bypass the electronic limiting system with the onboard toggle switch. Simply push the switch and the motor will run. If you want to go the opposite direction, flip the little lid out on the relay. (Always flip it in when finished.)
When installing, make sure the Open/Close buttons work before completing the job. A motor only working when operating from the emergency bypass is not completely installed.
Motor power wiring (Style A)
There are 2 styles of motors that can be connected.
Style A: HBJ-760 motor power wiring
- Power in: plug into a 120v outlet.
- Motor connections:22 – blue – earth
23 black
24 – red
25 – white - Capacitor mounted in the enclosure:26 – capacitor lead
27 – capacitor lead
Connecting a switch
Connect a switch as shown here. Use a 3-conductor control wire (electrician provided).
Sensor wiring
Depending on the date of manufacturing, the sensors either share or don’t share the cord going back to the controller.
Wiring when sensor wires join in a plug and only 1 cord goes back to the controller
Sensor Blue → GND
Sensor Black → B
Sensor White → A
Wiring when 2 sensor cords go back to the controller
Sensor 1 Blue → GND
Sensor 1 Black → ASensor 2 Brown → 24V
Sensor 2 Blue → GND
Sensor 2 Black → B
Troubleshooting notes
If the motor just stops and starts, line voltage may be too low. This is especially likely if running from a generator. Try running from a stable outlet.
Motor only runs in 1 direction and doesn’t stop for the limits
Check the AB lights; they must blink in a sequence. If they don’t, check the sensor wires.
Runs manually when holding teach buttons but not from the toggle switch
Does the Open/Close LEDs come on when the switch is toggled?
- No: check the switch wiring.
- Yes: check the AB lights.
The A&B LED must turn on when metal is in front of the sensor. Each sensor has a red LED too. When a sensor’s red LED illuminates, an A or B light will be on.
A & B light diagnostics
- If a red sensor LED is stuck on: is metal in front of it? If the red LED is illuminated with no metal, change the sensor.
- Check the sensor wiring for damage.
- Use a big flat screwdriver and put it against the sensor face.
- No response: check that the blue & brown wires have 24vdc; change the sensor.
- Turns on and the corresponding AB LED illuminates: the sensor is OK. Check the tolerance between the sensor and wheel. The sensor can’t detect more than 0.25″ away. Adjust the wheel position if needed.
Make sure the wheel doesn’t touch the sensor. We have seen this give random results.
Motor just buzzes, doesn’t run
Open the motor cover and check the cord connections very carefully. Pull on each conductor to see if any is loose. Redo all the motor connections.
Check the voltage. It needs to be at least 110v.
If it still doesn’t start, the motor may be overloaded.
- Remove the load and see if it starts. If it starts, reduce the load.
- If it doesn’t start and you have verified the connections, replace the motor.
A or B light just pulses once a second – doesn’t operate correctly
Check for DC voltage between blue & brown (GND and 24v terminals) on the sensor cord. If there is almost no voltage with the sensors connected, disconnect the sensor. If the voltage jumps to 24vdc with the sensors disconnected, change the sensor and sensor cord. Most likely the cord going to the yellow sensors is mangled.
Motor doesn’t run; both Teach Open and Teach Close LEDs are on
This means the top & bottom limits are set to the same position, which doesn’t allow the motor to go either open or closed. Set the limit positions. See Setting the limit positions to reset a limit.
Motor runs the wrong direction
Turn the power off. Swap wires 24 & 25. Both limit positions must be reset after swapping direction.
LiftMaster remotes
The LiftMaster 850LM connector wires to the HBJ with 3 wires (after 1/29/24). The pigtail is 12 inches long.
#1 – red wire – Power +
#2 –
#3 –
#4 – #5 brown – CH1 NO
#6 – black wire – power- & COM
An optional momentary pushbutton can be connected as shown.
Programming a remote
The HBJ800 works with the LiftMaster 850LM receiver and LiftMaster 893MAX remotes (3 buttons: Button 1, Button 2, Button 3). The Pair button on the 850LM is the CH1 learn button.
- Press and release the CH1 (Pair) button.
- Within 30 seconds, press the desired button on the remote control.
To erase the memory
- Press and hold the Learn button for the channel you want to erase. Release the button when the corresponding LED turns off; the memory has been erased.
Specifications
| Model | HBJ800 control |
|---|---|
| Version | V11 |
| Power in | 120v outlet |
| Minimum motor voltage | 110v (motor will not start reliably below this) |
| Sensor detection range | 0.25″ maximum between sensor and wheel |
| Compatible remotes | LiftMaster 850LM receiver, LiftMaster 893MAX remote |