Set Max Torque:
This is a factor in the motor control software. The “Max Torque” is the maximum
power the motor driver can produce, thus limiting the power to the motor. On a
new install, it is possible that the Max Torque is too low and the motor does not
have enough power to move the door. In this instance, errors will be seen on the
Master Controller LCD. The solution to this problem is to reboot the Master
Controller using the Bypass Mode, adjust the Max Torque setting upwards by 500,
then exit the Menu. Once the motor has sufficient torque to match the door
weight and friction, the system will be able to run the boot up diagnostics and
Homing routine. On the other hand, if the Max Torque is set too high, the door will
move in abrupt jerky motions. The key is to find a balance between not enough
torque, and too much. See further info on Max Torque.
Object Detection Level:
This setting allows the software to determine if an object has obstructed the door
from closing completely. The setting is calculated by the value entered, whereas
500 = 1" of travel. Since 500 = 1" of door travel, 250 would be 1/2" travel, 125 would
be 1/4" etc. Upon closing, if the door is not able to complete the move to the
Closed Position due to an obstruction, then the door will automatically retract. This
is a redundant safety feature. In most cases, the Closing Trip Level is used to detect
an amount of pressure on the door during the closing motion. Above a certain
pressure on the door, the door will auto-retract(Closing Trip Level). In some cases,
during the last couple of inches of travel closing as the door is decelerating, it
becomes more difficult to detect pressure on the door. It is during this last few
inches that this extra Object Detection feature becomes useful. The purpose of the
Object Detection feature is so that in the event that a hand or finger is stopping
the door from completing it's motion towards the closed position, and the Closing
Trip Level does not detect the pressure due to the slow speed in deceleration, the
Object Detection provides a safety backup.
The Object Detection operation uses an average of 10 completed closes to
determine a time factor in the software to track the normal closing time of the
decel phase. This means that to become effective, the door must complete 10
closes without an obstruction to establish the internal running average. After the
average is settled, the Object Detection begins to operate. If an object is
preventing the door from completing the move within the average time, the
Object Detection will retract the door. If the Object Detection Level is set to 125,
then any object thicker than 1/4" will trigger the retraction. On an Object
Detection, a message will appear on the Master Controller LCD screen stating
"Object Detected" at the time the door retracts.
NOTE: After two consecutive Object Detections, the master controller will
automatically reboot. This is done to recalibrate the system to the Home Switch.
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