SECTION 7: WINDRIVE T200 User's Manual
PAGE 7-35
a) Analog Input Reference
Figure 7.35: Analog Input Dialog Box
Automatic Input Offset Zero: The T200
automatically calculates the analog offset voltage upon clicking this button. It assumes that the present command voltage
corresponds to zero torque, velocity command or to the 'home' position.
b) Function Generator Reference
Figure 7.36: Function Generator Dialog Box
The Analog Input is a ±10V signal which is used as a
command reference. When the Analog Input is being used as
the reference source, several parameters must be set in the
dialog box. Enter this dialog via Set-up from the Reference
Source dialog.
Velocity Scaling: The Velocity Scaling is defined as the
commanded motor speed (in RPM) when the analog input
value is +10V. The maximum desired motor velocity is usually
entered in this field, so that the motor will rotate at this speed
when the analog input voltage is +10V. This is always a
positive number.
Input Offset: The Input Offset is used to adjust the input
voltage offset. It is entered in Millivolts (mV). The default
value in the Input Offset field is zero.
Position Scaling: If the T200 is operated in Position Mode,
then the analog reference can be used as a positioncommand.
The Position Scaling can be used to set the number of motor
shaft revolutions corresponding to 10V.
WinDrive compatible servo-drives feature a software
based function generator that is used as the reference
source for drive tuning. Enter this dialog via Set-up from
the Reference Source dialog.
Speed Amplitude: If the Speed Offset was set to 0, then
the Speed Amplitude would set an equal magnitude of the
speed reference command in the clockwise and counter-
clockwise direction. The Speed Amplitude must be a
positive number. It is specified in units of RPM.
Speed Offset: Used to bias the commanded velocity. It can
be positive or negative. The Speed Offset is specified in
units of RPM.
Torque Amplitude: This is specified in units of Nm or lb-
in. If the Torque Offset was set to 0, then the Torque
Amplitude would set equal magnitude of the torque
command in the clockwise and counter-clockwise
direction. The Torque Amplitude must be a positive
number.
NOTE - The operation of the Analog I/O is specified in detail in Section 6.4.
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