USTER HVI 900 - Motor Constants Menu

USTER® HVI 900 Instruction Manual
Uster Technologies, Inc. Chapter 10
Version 4.0 (1.99) Synthetic Fiber Testing - Page 10-21
4.9 Motor Constants Menu
This menu is used to define the motor constants that are the same for all
types of fibers. Most of these menu items should not be
modified without consulting a Uster Technologies Service
Technician.
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Change the values using the same procedure that is used to change
the Fiber Dependent Instrument Constants.
When values are changed on the MOTOR CONSTANTS MENU, the motors
will be re-loaded when you exit the SYNTHETIC FIBER STATUS MENU.
Note: Brusher Forward, Breaker Read Rate, and Comb Read Rate are
the only items that should be changed without consulting Uster
Technologies.
In general, the comb and breaker rates for synthetic fiber must be lower
than for cotton. The lower comb rate is a result of the fact that static
electrical forces are higher in Synthetic fiber than in cotton. Thus, more
time should be allowed for the fibers to position themselves in the air
stream. The lower breaker rate results in greater torque available from
the breaker motor.