Technical information

85
Software Setup and Operation
Figure 66: Accel/Decel Shape
The key advantage of using this option is reduced mechanical noise and wear of the
mechanical components. The difference is shown below.
Use the right and left arrow keys to select the shape you want. Press the <Enter> key to
confirm and enter your choice.
Time Base Override
By using the arrow keys to toggle between Analog, Real-Time and Encoder, you can change
the operating time base of the drive. The time base selected here overrides the internal time
base whenever the Time Base Override Input (Input #43) is active. (Encoder is only available
with the appropriate application module.)
Analog
When set to Analog this parameter sets the time base to external analog control. When in
analog control with an analog voltage supplied to the command connector, the actual velocity
of the motor will be:
Actual Velocity=(Programmed Velocity)(Input Analog Voltage)/10 Volts
For example:
If the analog voltage is +5 volts, and the programmed velocity is 3000 RPM’s, then the actual
velocity of the motor will be 1500 RPM’s.
The Analog Option is not available when using a PCM-18 Application Module.
Real-Time
When set to Real-Time the time base is synchronized to the drive’s internal clock.
Encoder
This parameter is available only if your FX drive is equipped with a PCM module that is
capable of ratio control. When set to encoder the time base is synchronized to an external
encoder.
SPEED
TIME
SPEED
TIME
MOD-SINE RAMPS LINEAR RAMPS