HIMA F6214 drive module

Gain adjustments are made from DeviceNet check-box When checked, the Controller Proportional Gain is updated over the DeviceNet bus and cannot be modified by the service tool. When not checked, the Controller Proportional Gain may be modified by the service tool. Controller Proportional Gain Sets the proportional gain of the P control.Tuning can be accomplished by increasing the Proportional Gain until the actuator just starts to oscillate, then reducing the Proportional Gain by a factor of 2. An SPC adjusted to an under-damped condition will be more responsive with less gain margin. It is more susceptible to instability due to changes in the system.

SPC Servo Position Controller

 Woodward 35 An SPC adjusted to an over-damped condition will have slower response and better stability. It is less susceptible to instability due to changes in the system. The ideal adjustment is a critically damped condition. This produces the best stability and response combination. Ref. Manual 83402 PID Control for additional information on tuning the control.

PI—The PI Controller will adapt best to small changes in the system. The PI controller is used in a majority of the applications (90 %+). Position feedback is forced to match position demand during steady-state operation.

Forward/Reverse Acting Control 

Selects the sense of the error signal in the controller. For example, when the demanded position exceeds the actual position (positive error), a forward-acting controller drives the output more positive, while a reverse- acting controller drives the output more negative. Actuator Minimum Current Determines the most negative actuator current that can be output, and sets the scaling for the -100 % controller output point. Allowed Range: –250 mA to +250 mA

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