Front Panel Display Screens and What They Mean

 

 

 

 

 

Fault Mode

 

 

 

 

 

When a fault state is detected, the appropriate fault message appears on the front

 

panel display at the next screen refresh (i.e., 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

 

Description

 

 

 

 

 

 

 

 

DC Voltage Fault

 

When the actual DC voltage is over or under the allowable

 

145.5V

 

range, 165 to 600 Vdc. Self-clearing, no action required.

 

 

 

The PV array should be configured such that DC voltage

 

 

 

does not fall below 195 Vdc or rise above 600 Vdc.*

 

 

 

 

 

 

AC Voltage Fault

 

When the actual AC voltage is over or under the allowable

 

 

280V

 

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

 

When the actual Frequency is over or under the allowable

 

 

0.0Hz

 

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

 

When 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).

 

 

 

 

 

 

Ground Fault

 

When a grounding fault is detected. The ground fault

 

 

Reset System

 

protection fuse will be blown (North American models only).

 

 

 

The system must be shut down completely, the fault

 

 

 

corrected, and the fuse replaced.‡ The system can then be

 

 

 

restarted. Troubleshooting a grounding fault should be

 

 

 

performed by qualified personnel.

 

 

 

 

 

 

Unit Shutdown

 

Appears if the GT Inverter unit has been shut down via a

 

 

via Remote

 

computer connected to the RS-232 port.

 

 

 

 

 

 

Protection uP

 

The protection processor is not responding.

 

 

Not Responding

 

 

 

 

 

 

 

 

*It is normal to receive this fault during low light conditions at dawn or dusk. At such times, the array does not have sufficient energy to power the inverter, so the PV voltage drops below 165 volts occasionally.

†Grid fault. When this fault is cleared the protection timer will begin its countdown and you will see the “Reconnecting in sss seconds” and “Inverter Offline” special screens (see Table 5-10)flashing alternately until the countdown is complete.

‡Applicable to North American models only. European models do not have a ground fault protection fuse installed.

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