Drive - Pretorque Tab - MCi iControl User Manual

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Drive - Pretorque Tab

Control
Both isolated platform and strain gauge load weighing devices are supported.
Please refer to "Pre-torque Adjustments" on page
• Pretorque option: The following Pretorque options are available:
• No Pretorque: Pretorque is disabled.
• Synthetic pretorque: Pretorque is enabled with a fixed load value which is equal to a
Pretorque balance adjustment value of four (4). When a load weigher is not available,
this option can be used to improve initial start by helping to hold the car at zero speed
when the brake is first lifted. Adjust the Pretorque balance adjustment up or down
from four (4) to get positive or negative pretorque, and adjust the Pretorque position
compensation and Pretorque gain as desired.
• Load weigher pretorque: Pretorque is enabled. The load value is supplied by an analog
load weigher.
• Pretorque position compensation: Controls the pretorque output voltage based on car
position in the hoistway.
• Pretorque gain: Controls the amount of output voltage from the pre-torque function.
Increase to increase voltage at takeoff and compensate for any rollback at the start of a
run.
• Pretorque balance adjustment: Adjust to ensure no rollback of a balanced car at the top of
the hoistway.
9-92 Manual # 42-02-2222
4-16.