High Country Tek HGC-2, Closed Loop Controller - Manual (Page 8)

8
CC – Constant Current Mode:
This mode is used to verify the system is stable under a constant command signal. The current
mode would be set to any level in the control range of the valve or pump. By commanding the
system with a constant signal, there should be no oscillation and the system should remain stable.
If not, there may be a problem with the hydraulics or a mechanical problem. This can be used as
a starting point to check the system before tuning. If the user cannot get the system stable, the
hydraulics may be the cause and a full overview of all hydraulic components, their settings, the
circuit and the installation should be undertaken.
Min and Max Frequency:
The Min and Max Frequency setting is set to the Low and High end of the frequency and will trig-
ger an alarm (Fault). Set this at the point where an alarm or shutdown is necessary.
Alarm Actions:
Set the condition of the alarm, no fault or Fault
Set the time allowed before the alarm triggers, this is necessary to allow the controller to fault for
very short periods of time and not trigger an alarm on every overshoot or undershoot.
Ramp Up and Ramp Down:
Set the time of ramp by mA/second. Too slow and the controller may not respond in time, too fast
and the controller may become unstable.
NOTE: Ramps are only functional when the controller is powered up. To use the ramps on start –
up or shut down, power the controller up on Pin # 1 always, and use the enable/disable (Pin # 8)
to shut down the generator. The ramps will work only when the controller is powered on Pin # 1.
End of Procedure.
Electronic Controller Solutions for the Global Fluid Power Industry
Controller Set-up: Modes & Adjustments
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HGC-2-Install-B.pub/GG/12 Copyright © High Country Tek, Inc. - 2012
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