8.6 Machine Data Parameters (LN)
Risk of personal injury or death!
The following parameters relate to the machine data of the elevator.
It is important to enter the correct values, such that the motor runs at the
overspeed error limit is calculated
correctly.
The drive uses the following equation to calculate the motor speed in RPM from the
machine data parameters:
12 x LN02 Gear Reduction Ratio x LN03 Roping Ratio x FPM Speed
LN01 Traction Sheave Diameter x 3.141
12 x LN02 Gear Reduction Ratio x LN03 Roping Ratio x m/s Speed x .00508
LN01 Traction Sheave Diameter x 3.141
LN01 Traction Sheave Diameter
The diameter of the sheave in either inches or mm, depending on US02 System Units
(ft/min or m/s). Ideally this value would be measured from the center of the rope.
LN02 Gear Reduction Ratio
The gear ratio, X:1. If the gear ratio is unknown, refer to parameter LN05 Estimated Gear
Reduction Ratio, pg. 129.
Once the car is running on high speed, if the measured speed is slightly above or below
the contract speed, the gear ratio can be changed slightly to compensate. Higher values
in LN02 will increase the car speed, lower values will decrease the car speed. Make very
small changes at first!
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