- General Electric Computer Accessories User Manual

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• Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Protective Functions
Custom User Faults
Each Innovation Series product provides the capability to configure two fault
circuits. The trip faults Customer use NC flt and Customer use NO flt trigger on input
signals that are the states of the fault circuits. Customer use NC flt occurs when the
normally closed circuit is open. Customer use NO flt occurs when the normally open
circuit is closed.
Function inputs
The following table specifies the input parameters of the Custom User Faults
function.
Parameter Description
User NC fault sel Selects the source of the normally closed circuit input.
User NO fault sel Selects the source of the normally open circuit input.
Faults and alarms
The following table specifies the faults and alarms declared by the Custom User
Faults function.
Fault/Alarm Description
Customer use NC flt
Trip fault that occurs when the normally closed circuit
input is False, indicating that the circuit is open
Customer use NO flt Trip fault the occurs when the normally open circuit input
is True, indicating that the circuit is closed
Function description
The parameters User NC fault sel and User NO fault sel generally select digital
inputs (variables Digital input 1, …, Digital input 6) or general purpose LAN
requests (variables GP lan req bit 1, …, GP lan req bit 8). The custom user faults
may be disabled by selecting Unused for the input parameters.
DC Link Protection
The drive contains several diagnostic and protective features involving the DC Link
Protection.
Diagnostic variables
The following table specifies the DC Link Protection diagnostic variables.
Variable Description
DC bus feedback Unfiltered DC link voltage. DC volts
DC bus voltage Filtered DC link voltage. DC volts
DC bus charged Indicates whether the DC link voltage is high enough to
allow the drive to run.
DC bus excursion Departure of DC link from user specified region. DC volts