Controlled Products Systems Group 9050-080 - Manual (Page 35)

3.3 AUTOMATIC LIMIT ADJUSTMENT
This gate operator does not use any mechanical limit switches or run timers to adjust the open and
close positions of the gate. The gate open and close positions are determined by the physical stops
(or chain stops) of the gate. The gate operator will automatically measure the gate and will set its
"limits" from this measurement during this automatic sequence.
!! IMPORTANT !!
This automatic limit adjustment sequence must be run prior to testing the operator for normal
operation, and prior to testing any of the safety features that are incorporated into this operator. This
includes the primary and secondary entrapment protection features, and the entrapment alarm and
reset features.
1. The limit adjustment is automatic and relies on the physical stop of the gate or on the
chain stops installed on the chain. Be sure that the gate has a physical travel limitation in
both directions prior to starting this sequence. DoorKing "Gate Stops" can be used if
physical stops are not present on the gate.
2. Turn power to the operator ON. Activate an open device (or momentarily jumper between
terminals 8 and 12). The gate operator should begin to cycle the gate to the OPEN
position.
3. If the gate operator begins to cycle the gate to the CLOSED position, turn power to the
operator OFF. Change the setting of direction switch 1, then repeat step 2.
4. After the gate reaches the full open position, the gate operator will shut off. Activate a
keying device to close the gate (or allow the timer to close the gate if it is turned on).
When the gate reaches the full closed position, the gate operator will shut off.
NOTE: During this initial setup, be sure that the operator clutch does not slip while the
gate is cycling from the full open to the full closed position. If the clutch slips during this
period, the limits will be misadjusted.
5. After closing, the gate will open automatically and stop approximately one foot from the
full open position, and then will continue to the full open position. Activate a keying device
to close the gate (or allow the timer to close it if it is turned on). The gate will close and
stop approximately one foot from the full closed position, and then will continue to the full
close position.
6. The operator limits and coast settings are now set. Cycle the gate again. The operator
should reach the full open and full close positions and then shut off automatically.
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