Configuration - Drive
9-113
9
iControl DC
Speed Control
• Armature Voltage: Input PID.
• Dampening speed: Increase to remove oscillation by dampening speed loop voltage.
Excessive values may impact system performance. Adjust after adjusting PID - Stan-
dard, Proportional and Integral parameters on the Control tab. Please refer to “Car
Response and Speed Loop Gain (System 12 SCR Drive)” on page 2-65.
• Dampening torque: Usually set to 0.0. Increase to remove oscillation by providing
voltage dampening for the current loop. Armature Voltage, Dampening Speed is more
effective and should be adjusted first.
• Low-pass frequency: Determines how much variation will be allowed in the signal
received from the armature voltage. Recommended range 40 - 99 Hz.
• High-pass frequency: Determines how much of the DC component will be removed
from the armature feedback voltage before the signal is used in the speed loop calcula-
tion. Increase to reduce the dampening effect on the system (Dampening Speed and
Dampening Torque become less effective).
• Armature Current: Input current loop.
• Dampening speed: Increase to remove oscillation by providing current dampening for
the speed loop. Excessive values may impact system performance.
• Dampening torque: Usually set to 0.0. Increase to remove oscillation by providing cur-
rent dampening for the current loop. Armature Voltage, Dampening Speed is more
effective.
• Low-pass frequency: Determines armature current signal smoothing.
• High-pass frequency: Determines how much of the DC component will be removed
from the armature feedback current before this signal is used in the velocity loop cal-
culation. Increase to reduce the dampening effect on the system (Dampening Torque
becomes less effective).
Current Control
• Dampening current: Dampens any oscillation caused by speed loop gain adjustments.
Dampening current adjustment will only be effective if other system parameters are also
adjusted. Contact MCE Technical Support before adjusting this parameter.
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