9-10 9469300994
Troubleshooting DGC-2020HD
Synchronizer Does Not Raise Generator Voltage to Achieve Matching of Bus and
Generator Voltages
Navigate to the Settings, Programmable Outputs, Analog Output Settings, AVR Output screen and
change the Voltage Response setting from Increasing to Decreasing.
Speed Bias
Engine Speed Does Not Change When Speed Bias Voltage Changes
Verify that the engine speed will change when the speed bias changes. As a test, you can force a voltage
on the speed bias output by setting the Min Output Voltage and Max Output Voltage to the same value by
navigating to Settings, Programmable Outputs, Analog Output Settings, GOV Output. If the bias is current
based, you can force a fixed current by setting the Governor Output Voltage Minimum and Maximum to
the same value by navigating to Settings, Programmable Outputs, Analog Output Settings, GOV Output.
If the speed still does not change when varying the bias:
• Verify that the governor or ECU is equipped and configured to accept bias inputs.
• Check connections to verify the wiring to the governor bias is correct.
• If you have an engine with an ECU, check ECU programming to verify it is set up to accept a
speed bias input.
Engine Speed Decreases When Speed Bias is Increased
Navigate to the Settings, Programmable Outputs, Analog Output Settings, GOV Output screen and set
Speed Response to Decreasing.
Engine Speed Increases When Speed Bias is Decreased
Navigate to the Settings, Programmable Outputs, Analog Output Settings, GOV Output screen and set
Speed Response to Decreasing.
Load Anticipation
Large Frequency Overshoot on Recovery
Kla Gain may be too high and GOV output may be saturated. See Figure 9-8. Navigate to Settings, Bias
Control Settings, Governor Bias Control Settings and decrease Load Anticipation, Kla Gain.
To Next Page
Loading...
