Monitoring the Inverter

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 5-8Fault Message Screens

 

Display

 

Appears When...

 

 

 

 

 

 

 

DC Voltage Fault

 

The actual DC voltage is over or under the allowable range,

 

145.5V

 

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

 

The actual AC voltage is over or under the allowable range,

 

280V

 

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

 

The actual Frequency is over or under the allowable range, as

 

0.0Hz

 

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

 

The unit’s internal temperature is greater than 80° C

 

81.4C 178.5F

 

(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

 

The GT Inverter is configured for North America, and the

 

Detected

 

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

 

A grounding fault is detected. The ground fault fuse will be

 

Reset System

 

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

 

The GT Inverter unit has been shut down via a computer

 

via Remote

 

connected to the RS-232 port.

 

 

 

 

 

Protection uP

 

The protection microprocessor is not responding.

 

Not Responding

 

 

 

 

 

 

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