ABB ACL30 - Speed Reference Scaling

142 Program features
 Speed reference scaling
The Speed reference scaling function converts the linear speed of the elevator (m/s)
to the rotation speed of the elevator motor (rpm). To ensure correct operation of the
function and the elevator, you must define calculation factors at the start-up of the
drive. These factors (parameters) are: gear ratio, sheave diameter and roping ratio.
The figure below illustrates the components of the function.
The figure below illustrates common roping ratio alternatives.
Motor
Gear ratio
Sheave dia (m)
Speed
(rpm)
Linear speed (m/s)
Speed (rpm)
Gear ratio
Motor
Linear speed (m/s)
Sheave diameter (mm)
Roping ratio 1:1 Roping ratio 2:1
Roping ratio 1:1
Roping ratio 2:1