What is a drive point?
What is a master drive point?
What is a tensioning drive point?
A drive point is any non-idling component intended to maintain or change web speed or tension in the machine direction (MD), typically rollers connected to a brake, clutch, or motor. (Note: Clutches are usually have a driven input shaft connected to a motor, but can be used as a brake without a motor.)
The master drive point is the single drive point intended to control the overall speed of a web line. The master drive point (also called the pacer or line speed reference) leads the entire line through acceleration, steady speeds, and deceleration. If the master drive point slips, the web speed and tension will be uncontrolled.
A tensioning drive point is any additional drive point that is not the master. Each additional tensioning drive points (also known as followers) creates an additional tension zone. Tensioning drive points will run near the master speed, but trim their speed or torque, as needed, to increase or decrease tension.