High Country Tek HGC-2, Closed Loop Controller - Manual (Page 17)

Hydraulic Generator Controller – HGC-2
17
Initial Set-up Procedure :
The following steps are recommended when commissioning a HGC-2 controller:
1. Select the desired operating frequency.
2. Set the Minimum and Maximum Output currents according to the valve data sheet.
3. Set the Dither Frequency as recommended by the valve manufacturer.
( NOTE: Higher dither frequencies can sometimes be used in closed loop systems to improve frequency response).
4. Set the Ramp Up Rate and Ramp Down Rate to a nominal 3 seconds ( trim this to suit perfromance ).
5. Adjust the PID parameters as needed to optimize the system response:-
 Start with Proportional (P) setting and increase to achieve a stable system.
 Once stability is achieved, gradually increase the add Integral (I) setting and finally,
 Increase the Derivative (D) setting as needed to improve system response and/or stability.
The Constant Current Mode, or CC Mode, is useful for setup and troubleshooting. It can also be used in
electrically noisy environments where the AC feedback might become overly distorted. In this mode the
controller will maintain a constant output current to the valve coil without regard to the AC line feedback. To
initiate CC Mode, apply a signal to both the CC Mode Enable and the main Enable simultaneously. Once
started, the CC Mode Enable signal can be removed and the controller will continue in this mode until the main
Enable is removed. CC Mode cannot be initiated after the controller is started in normal mode.
Troubleshooting - Constant Current Mode:
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latest version. HCT accepts NO liability for technical mistakes or printing errors, or their consequences.