Load Weigher Configuration
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4
iControl DC
• Light load threshold (% of full load): Enter the percentage of full load weight below
which the controller should consider the car to be in a light load condition. Typically
set below 20% of full load. A setting of 00% = OFF. See “Load Thresholds” on page 4-
36.
• Empty load threshold (% of full load): Enter the percentage of full load weight below
which the controller should consider the car to be empty. See “Load Thresholds” on
page 4-36.
6. When ready, press the SEND button to send the changed values to the controller.
Learning Load Values
Learning the empty and fully loaded car values is a semi-automated process requiring that the
appropriate load be present in the car before beginning each stage. It is best to have two people
available, one in the machine room at the elevator controller or iView PC and one at a floor to
handle test weights and ensure there are no passengers in the elevator.
The test weights must be equal to full load value. The learn process must be performed twice,
once for empty car load and once for full car load. In order to learn load weigher values, the ele-
vator must be in normal Passenger operation. The car will not be moved from the starting floor
if the load weigher is an “isolated platform displacement sensing” type. However, if the load
weigher is the “rope tensions sensing” or “cross-head deflection sensing” type, the car must
travel the hoistway, stopping to learn the load values at each floor.
The load weigher sensor must be calibrated prior learning the load values. Please refer to “Load
Weigher Sensor Adjustment” on page 4-21. If you are preparing to do safety testing, including gover-
nor and buffer tests, you might want to do them first and then adjust the load weigher sensor and
learn the load values, because re-calibrating the load weigher is recommended following buffer tests.
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