Setting travel limits – ETS-Lindgren 2075 MiniMast (Archived) User Manual

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MODEL 2075 MINIMAST™

Setting Travel Limits

REV D – PN 399235

SETTING TRAVEL LIMITS

The mechanical limits of the Model 2075 MiniMast™ are located
in the motor base on the mast platform.

CAUTION Keep all body parts away from the drive components
when the tower is energized. Never be directly beneath the carrier
at any time.

The mechanical limit adjustment knobs are labeled to indicate
function. To increase the amount of travel in either direction turn
the knob in the direction indicated by the positive (+) sign. To
decrease the amount of travel in either direction you must turn the
knob in the minus (-) direction as indicated.

WARNING Ensure the current travel limit settings will not cause
damage to the mast or any mounted antennas prior to operation.

With the carrier at the lowest point of desired travel, attach the
lifting rope to the carrier assembly. The attachment point on the
carrier is the lever arm of the carrier brake. Turn the lower limit
adjustment knob in the (-) direction unit the limit switch engages
the actuator. Then, running the carrier up and down, adjust the
lower limit knob until the proper position is found. Run the carrier
assembly up until the carrier assembly is near its desired position.
Adjust the upper limit adjustment knob in the (-) direction until the
limit switch engages the actuator. Then, running the carrier up and
down, adjust the upper limit knob until the proper upper limit
position is established. Run the tower through its entire scan range
several times to ensure that the limit positions are properly set.
Whether or not the soft limits in the controller are used, the
mechanical limits must be set for proper and safe operation.

Archived 3/18/10