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Troubleshooting DGC-2020HD
Step 5: Verify the wiring to the breaker from the DGC-2020HD. If it appears correct, you can manually
close and open by modifying the programmable logic. Map some unused outputs to the Open
and Close outputs from the Gen Breaker Block in the programmable logic. Map a virtual switch
to the logic output that would normally be the breaker open output. Map another virtual switch
to the logic output that would normally be the breaker close output. Connect with
BESTCOMSPlus, and exercise the virtual switches using the Control panel located in the
Metering Explorer. Never turn open and close on at the same time. This could damage the
breaker and/or motor operator. If everything is working as expected, restore the logic to its
original diagram.
Mains Breaker Does Not Open When Mains Fails
Step 1: Verify that a Mains Breaker has been configured by examining the settings on the Settings,
Breaker Management, Breaker Hardware screen.
Step 2: Verify the mains breaker has been correctly included in the programmable logic.
Step 3: Verify that the Mains Fail Transfer parameter is set to Enabled on the Settings, Breaker
Management, Breaker Hardware screen.
Step 4: Verify that a failure of the mains is detected by the DGC-2020HD. Check status using the
Metering Explorer in BESTCOMSPlus and verify that the Mains Failed status LED is lit when
the power on the DGC-2020HD bus voltage input is either out of voltage or frequency range. If
necessary, modify the settings on the Settings, Breaker Management, Bus Condition screen to
achieve correct detection.
Step 5: Verify the wiring to the breaker from the DGC-2020HD. If it appears correct, you can do a
manual close and open by modifying the programmable logic. Map some unused outputs to the
Open and Close outputs from the Gen Breaker Block in the programmable logic. Map a virtual
switch to the logic output that would normally be the breaker close output. Map another virtual
switch to the logic output that would normally be the breaker close output. Connect with
BESTCOMSPlus, and exercise the virtual switches using the Control panel located in the
Metering Explorer. Never turn open and close on at the same time. This could damage the
breaker and/or motor operator. If everything is working as expected, restore the logic to its
original diagram.
Mains Breaker Does Not Close After Mains Returns
Step 1: Verify that a Mains Breaker has been configured by examining the settings on the Settings,
Breaker Management, Breaker Hardware screen.
Step 2: Verify the mains breaker has been correctly included in the programmable logic.
Step 3: Verify that the Mains Fail Transfer parameter is set to Enabled on the Settings, Breaker
Management, Breaker Hardware screen.
Step 4: Verify that stable mains power is detected by the DGC-2020HD. Check status using the
Metering Explorer in BESTCOMSPlus and verify that the Mains Stable status LED is lit when
the power on the DGC-2020HD bus voltage input is good. If necessary, modify the settings on
the Settings, Breaker Management, Bus Condition screen to achieve correct detection.
Step 5: Verify the wiring to the breaker from the DGC-2020HD. If it appears correct, you can do a
manual close and open by modifying the programmable logic. Map some unused outputs to the
Open and Close outputs from the Gen Breaker Block in the programmable logic. Map a virtual
switch to the logic output that would normally be the breaker open output. Map another virtual
switch to the logic output that would normally be the breaker close output. Connect with
BESTCOMSPlus, and exercise the virtual switches using the Control panel located in the
Metering Explorer. Never turn open and close on at the same time. This could damage the
breaker and/or motor operator. If everything is working as expected, restore the logic to its
original diagram.
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