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15-2
Step 5.
Use a voltmeter connected between the BATT– terminal (17) and the SENDER COM terminal
(2) on the DGC-2020ES to verify that there is no voltage difference at any time. Any voltage
differences may manifest themselves as erratic sender readings. Wiring should be corrected so
that no differences exist.
Step 6:
Check the sender wiring and isolate sender wiring from any of the ac wiring in the system. The
sender wiring should be located away from any power ac wiring from the generator and any
ignition wiring. Separate conduits should be used for sender wiring and any ac wiring.
Incorrect Display of Generator Voltage
Step 1.
Verify that all wiring is properly connected. Refer to the Typical Connections chapter in the
Installation manual.
Step 2.
Ensure that the proper voltage is present at the DGC-2020ES voltage sensing inputs (40, 41,
43, and 45).
Step 3.
Verify that the voltage transformer ratio and sensing configuration is correct.
Step 4.
Confirm that the voltage sensing transformers are correct and properly installed.
Incorrect Measurement or Display of Generator Current
Step 1.
Verify that all wiring is properly connected. Refer to the Typical Connections chapter in the
Installation manual.
Step 2.
Ensure that the proper current is present at the DGC-2020ES current sensing inputs 33, 34, 35,
36, 37, and 38.
Step 3.
Verify that the current sensing transformer ratios are correct.
Step 4.
Confirm that the current sensing transformers are correct and properly installed.
Incorrect Display of Engine RPM
Step 1.
Verify that all wiring is properly connected. Refer to the Typical Connections chapter in the
Installation manual.
Step 2.
Verify that the flywheel teeth setting is correct.
Step 3.
Verify that the prime mover governor is operating properly.
Step 4.
Verify that the measured frequency of the voltage at the MPU input (31 and 32) is correct.
Step 5.
If the MPU is shared with the governor, verify that the polarity of the MPU input to the governor
matches the polarity of the MPU input to the DGC-2020ES.
DGC-2020ES Indicates Incorrect Power Factor
Check the rotation of the machine and the labeling of the A-B-C terminals. The machine must be rotating
in the same phase sequence as dictated by the generator phase rotation setting for correct power factor
metering. A power factor indication of 0.5 with resistive load present is a symptom of incorrect phase
rotation.
LCD is Blank and all LEDs are Flashing at Approximately Two-Second Intervals
This indicates that the DGC-2020ES does not detect that valid application firmware is installed. The unit
is running its boot loader program, waiting to accept a firmware upload.
Step 1.
Start BESTCOMSPlus
Step 2.
Select COMMUNICATIONS > UPLOAD DEVICE FILES and select the device package file that
contains the firmware and language you want to upload.
Step 3.
Check the boxes for DGC-2020ES Firmware and DGC-2020ES Language Module. Click the
UPLOAD button to start the upload process.
Troubleshooting
. Use the top pull-down menu and select FILE > NEW > DGC-2020ES.
®
9469200995
DGC-2020ES
- Quick Links:
- Configuration through the Front Panel
Hide quick links:
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