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52 W7 ASD Installation and Operation Manual
Acceleration Time #1
Program Fundamental Parameters Fundamental #1 Accel
Time #1
This parameter specifies the programmed time in seconds for the output of the
ASD to go from 0.0 Hz to the Maximum Frequency for the #1 Acceleration
profile. The accel/decel pattern may be set using Accel/Decel #1 Pattern. The
minimum and maximum accel/decel time may be set using S-Pattern Lower
Limit Adjustment and the S-Pattern Upper Limit Adjustment.
Note: An acceleration time shorter than the load will allow may
cause nuisance tripping and mechanical stress to loads.
Automatic Accel/Decel and Stall settings may lengthen the
acceleration time.
Acceleration
The acceleration rate of a motor is determined by several factors: applied
power, applied load, and the physical properties of the motor (winding
parameters, motor size, etc.). The ASD will control the first of these factors:
input power. The settings of the ASD control the frequency and amplitude of
the applied voltage to the motor.
Under most operating conditions, as the output frequency of the ASD goes up
so does the output voltage (linear acceleration). The ASD has the ability to
modify the relationship between frequency and voltage automatically to
produce smoother operation or increased (starting) torque.
Parameter Type — Numerical
Factory Default — (ASD-dependent)
Changeable During Run — Yes
Minimum — 0.1
Maximum — 6000
Units — Seconds
Accel #2 Time
Program Fundamental Parameters Fundamental #2 Accel
Time #2
This parameter specifies the programmed time in seconds for the output of the
ASD to go from 0.0 Hz to the Maximum Frequency for the #2 Acceleration
profile. The accel/decel pattern may be set using Accel/Decel #2 Pattern. The
minimum and maximum accel/decel time may be set using S-Pattern Lower
Limit Adjustment and the S-Pattern Upper Limit Adjustment.
This setting is also used to determine the acceleration rate of the Motorized Pot
function.
Note: An acceleration time shorter than the load will allow may
cause nuisance tripping and mechanical stress to loads.
Automatic Accel/Decel and Stall settings may lengthen the
acceleration time.
Parameter Type — Numerical
Factory Default — (ASD-dependent)
Changeable During Run — Yes
Minimum — 0.1
Maximum — 6000
Units — Seconds
Acceleration Time #1 Accel #2 Time