Service manual

4801-5159 Rev 01-2015 Technical Installation and Service Manual Page 17
DC Harness Plug
Encoder
Actual Position
Open Speed
Close Speed
TotalCycles
Service Cycles
Door Obstruction
(Cycles 100)
Mode
- - -
Unknown Position Indication
10 Unknown Position Indication
There are occasions when the Controller may not know
the exact position of the door. For example, when
returning from the Jog Mode. In these cases the Display
Indicator will display a series of three bars as shown to
the right. This is known as the Unknown Position
Indication.
When the door is actuated, the door will proceed to the
full open position, however the speed of the door will be
reduced. When the door has returned from the Home
Switch position to the Open Limit position, the Display Indicator will show the Actual Position of the door. This
indicates that the door has reset its position and is ready for normal operation.
If the Door Encoder fails, the control will not be able to recognize the position of the door. This problem can also
arise from a loose or bad connection in the DC Harness. Check the DC Harness to insure it is connected properly
and that there are no loose wires in the connection to the Encoder.