Chamberlain SL 1000-X3 - Manual (Page 16)

Rev J Doc 01-20098 Page 16 of 44
J. GATE SENSITIVITY ADJUSTMENTS
The gate operator monitors both average and peak motor current. When the gate
encounters an obstruction, the gate operator senses the change in motor current and
reverses the gate. Three sensitivity adjustments must be set for each installation:
• Right gate motion (R69)
• Left gate motion (R160)
• Start-up current (R203)
♦ If your installation requires setting switch S2 to the “Open to Right” position, use the
“Open to Right" adjustment procedures below. If your installation requires setting S2
to the “Open to Left” position, use the “Open to Left" adjustments following the "Open
to Right" procedures.
♦ The minimum sensitivity is full clockwise and maximum sensitivity is full counter
clockwise. These adjustments must be made while the gate is in motion.
♦ Before starting the adjustments, verify that the Left and Right reverse pots are set
fully clockwise, and the Start-up pot is set to the 11 o’clock position (See Fig. 15).
♦ Make all adjustments in the order listed.
NOTE:
Current flow varies with temperature. Do not tune the sensitivity
measurements too finely, or they may cause false overcurrent faults to occur
during cold weather.
Figure 15. Gate Sensitivity Adjustments Location.
"OPEN TO RIGHT" ADJUSTMENT PROCEDURES
Right Gate Motion Adjustment (R69)
1. Initiate opening the gate.
2. Wait 4 to 5 seconds, then lightly "tug" against the edge of the gate to simulate an
obstacle.
3. If the gate does not stop or back up, reclose gate and adjust the pot slightly
counterclockwise.
4. Repeat steps 1-3 until gate stops or backs up when tugged and has the desired
sensitivity.
Left Gate Motion Adjustment (R160)
1. Open the gate fully, then initiate closing the gate.
2. Wait 4 to 5 seconds, then lightly "bump" the leading edge of the gate to simulate an
obstacle.
3. If the gate does not stop or back up, reopen the gate and adjust the pot slightly
counterclockwise.
4. Repeat steps 1-3 until the gate stops or backs up when bumped and has the desired
sensitivity.