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Monitoring the Inverter
5–8
975-0320-01-01
Fault Mode
When a fault state is detected, the appropriate fault message appears on the front
panel display at the next screen refresh (within 2 seconds). The GT Inverter fault
message screens are shown in Table 5-8.
Fault Mode causes
These message screens only appear when there is a fault, and then flash
alternately with the Inverter Offline default screen (Table 5-5) until the fault is
corrected.
Table 5-8
Fault Message Screens
Display
Appears When...
DC Voltage Fault
145.5V
The actual DC voltage is over or under the allowable range,
240 to 600 Vdc. Self-clearing, no action required.
The PV array should be configured such that DC voltage
does not fall below 240 Vdc or rise above 600 Vdc.*
AC Voltage Fault
280V
The actual AC voltage is over or under the allowable range,
as specified in “Output” on page A–2.
This is a utility fault; it will clear itself when the AC voltage
comes within the specified range.†
Frequency Fault
0.0Hz
The actual Frequency is over or under the allowable range, as
specified in “Output” on page A–2. This is a utility fault; it
will clear itself when the frequency comes within the
specified range.†
Over Temp Fault
81.4C 178.5F
The unit’s internal temperature is greater than 80° C
(176° F), the unit will shut down automatically and only
restart when the temperature has dropped to less than 70° C
(158° F).
Neutral Loss
Detected
The GT Inverter is configured for North America, and the
phase-to-neutral voltage is outside the allowable range.
Either this is a utility fault or a phase-to-neutral line is not
connected properly.
Ground Fault
Reset System
A grounding fault is detected. The ground fault fuse will be
blown. The system must be shut down completely, the fault
corrected, the fuse replaced (see “Replacing the Ground
Fault Protection Fuse” on page 6–4) and then the system
restarted. Troubleshooting a grounding fault should be
performed by qualified personnel, such as a certified
electrician or technician.
Unit Shutdown
via Remote
The GT Inverter unit has been shut down via a computer
connected to the RS-232 port.
Protection uP
Not Responding
The protection microprocessor is not responding.
Summary of Contents for GT5.0-NA
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