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Aurora Power One Centralized Rack Cabinet
Aurora Power One PVI Module

✓ PVI50 - 3I19
✓ PVI50 - 3M04
✓ PVI50 - 3L07 (NEW)
✓ PVI55 - 3L07 (NEW)
✓ PVI55 - 3M05
✓ PVI67 - 3M62
✓ PVI67 - 3M67

POWER ONE CENTRALIZED

Listed below are the requirements for initial action on a failed inverter. Before proceeding with any operation: A) Verify that the model is correct; B) Carefully follow all instructions provided in the manufacturer’s operation and maintenance manual; C) Ensure that the intervention is carried out by trained personnel; D) Since this is a photovoltaic inverter with a DC input that is always live, strictly observe all applicable safety regulations.

Alarms, Errors and Warnings

Messaggio di allarme
Allarme
Codice a display
Possibile causa
Possibile soluzione

Display off

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a) if the problem is common to all modules in the rack: No auxiliary voltage
b) if the problem is present not in all modules in the rack: Logic board display connection

(a) Check the status and voltage at the terminals of the Aux disconnect switch inside the ACbox. Rebend the auxiliary voltage distribution harnesses, starting from the bottom upward.
b) Rebend the auxiliary voltage distribution harnesses, starting from the bottom upward.
Remove the top panel of the module and check the connection of the fat to the display.
If no solution is found, contact STI Service Repair.

Energy Save

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(a) Insufficient DC voltage

a) - Open the left front panel and check the presence of DC voltage (at least 350V).
- Check the status of the DC fuses.
- Check the status of the field switch disconnector.
- Check the polarity of the strings.
- Through Aurora CVI Central (DC side, Vpanel), check for the presence of DC voltage (at least 350V):
If the DC voltage is within the threshold:
Try swapping the module with another one from the same rack, verifying the correct connection between the module blades and the rack tapered plugs. If the error persists, contact STI Service Repair.
If the DC voltage is not within the threshold:
- Using Aurora CVI Central software check the Vpanel: if the threshold is different from 350V, in the Setup (DC side) submenu try decreasing the value of variable 112.
- Contact STI Service Repair for module replacement.

Waiting sun-net

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(a) ( if the problem is common to all modules): No voltage on AC side
b) (if the problem is not common to all modules): Internal module fault

a) Check the voltage at the terminals of the AC breaker.
- Check the status of the trio of AC fuses connected to the module and that the
voltage reaching them is 320 Vac.
- Check the voltage at the terminals of the AC filters by removing the right front panel.
- Check the status of the AC contactor by checking the connections to the twilight relay and interface protection device (LV version only).
- Check the voltage at the ends of the integrated transformer (LV version only).
- Check the connectors on the rack connection plugs. Measure
with tester the VAC on the connectors.
If the blades are out of place, the counterpart of the module is not making contact.
- Check the AC disconnect switch at the base of the Acbox that it is not in the TRIPPED position.
If this is the case, the Imax and Tmax trimmers have not been calibrated to the MAX position by the parent company.
b) Check the functionality of the module.
Try swapping the module with another one from the same rack.
If the error persists in the same module, contact STI Service Repair.

Iin high

Input current above the maximum threshold

E001

(a) Incorrect sizing of the PV generator. Error in plant implementation.
b) Internal module fault.

(a) Check whether the composition of the PV generator is within the DC limits of the inverter. It is possible that this state leads to a halt in the conversion process due to DC fuse tripping. Adjust the system to the limits of the inverter.
b) Check the functionality of the module.
Try swapping the module with another one from the same rack.
If the error persists in the same module, contact Service STI Repair.

Bulk OV

Input voltage above the maximum threshold

E004

(a) Incorrect sizing of the PV generator. Error in plant implementation.
b) Internal module fault.

a) Check the DC voltage input to the inverter.
- Open the field disconnect switch and check whether the PV generator composition is within the DC limits of the inverter.
- Adjust the system to the inverter limits.
- Check the status of the DC connections input to the inverter.
b) Check the functionality of the module.
Try swapping the module with another one of the same rack.
If the error persists in the same module, contact the Service STI Repair.

Error com.

Communication error with the DSP

E005

(a) Internal module failure

a) Perform a complete restart cycle of the inverter.
Try swapping the module with another one from the same rack.
If the error persists in the same module, contact Service STI Repair. This repeated error can lead the module to the E043 Autoexclusion error.

Overcorr

Output current outside the maximum threshold

E006

(a) Short circuit on the AC side of the inverter. AC line voltage fault.
b) Internal module fault.

a) Disconnect the module completely:
- Open the AC switch on board the inverter, the DC disconnector and the Auxiliary power supply.
- Check the connections and the voltage on the AC side.
- Check the status of the trio of AC fuses connected to the module and that the
voltage coming to them is 320 Vac.
- Check the voltage at the ends of the integrated transformer (LV version only).
b) Check the functionality of the module.
Try swapping the module with another one from the same rack.
If the error persists in the same module, contact Service STI Repair.

OCH

IGBT SAT

E007

(a) Disturbance/grid hole/low irradiance (morning, evening)
(b) Internal module IGBT failure.

In case of occasional or alternating error on several modules:
- Download the fault log using Aurora CVI Central software and check the generating conditions and the number of errors.
This repeated error may lead the module to error E043 Autoexclusion.
If the error is not recurrent, this is not a real problem.
b) If the error is permanent on one module, try swapping the module with another one of the same rack. If the error persists in the same form contact Service STI Repair.

Overtemp.

Overtemperature

E014

(a) Temperature probe failure, ambient temperature above 60°, filters blocked.

a) Using Aurora CVI Central software check:
- Heatsink temperature (H Sink degrees centigrade). If it is higher than
95°c contact the Service STI Repair
- Check the technical compartment and ambient temperature, check the status of filters.
- Try swapping the module with another one of different framework.
If the error persists in the same module contact the Service STI Repair.
If the error persists in the same framework, check the status of the temperature probe
in the side dipswitch board.
If it is not solved contact the Service STI Repair.

Bulk sbil.

Voltage difference on DC capacitors above
the maximum threshold

E015

(a) PV generator insulation loss.
(b) Module failure.

a) Disconnect the module completely:
- Open the AC switch on board inverter, the DC disconnector and the Auxiliary power supply.
- Check the unbalance of the DC voltage to ground: Through the use of a tester, compare the value of the voltage between the positive bar of the PV generator and ground, and the value of the voltage between the negative bar and ground. In case of two values unbalanced with each other, the PV generator insulation should be checked, then repeat the operation on the individual strings until indentifying on which of them the problem is located (For these operations, the use of a megohmmeter can be functional).
b) In case of two PV generator voltage values balanced with each other, try swapping the module with another one of the same rack.
If the error persists in the same module, contact the Service STI Repair.

Low temp.

Temperature below the minimum threshold

E033

(a) Ambient temperature below -10°.
b) Temperature probe failure

a) Through the Aurora CVI Central software, in the INVERTER MONITORING menu, check whether the default value of the MCU°C, P. Feed
°C, H Sink°C, AUX2 °C and AUX3 °C thresholds is -10°C. Should the value be lower, through the SETUP->SPECIAL FUNCTION menu, act on variables 101/103/105/109. If the error is on AUX2 act on variable 107.
This change allows the inverter to continue to produce, you still need to contact STI Service Repair.
b) Check the technical compartment and ambient temperature.
Try swapping the module with another one of different framework.
If the error persists in the same module contact STI Service Repair.
If the error persists in the same framework, check the status of the temperature probe in the dipswitch side board.
If the error is not resolved contact STI Service Repair.

Remote off

Remote off

E035

(a) Remote off by software command.
(b) Intentional/accidental shutdown via contacts in terminal block X9-X10X11

a) Through the Aurora CVI Central softaware, reset Remote ON from the MODULE- menu.> COMMANDS->SOFTWARE COMMANDS-> REMOTE ON/OFF SETTINGS.
(b) Check the status of terminals X9-X10-X11 inside the ACBox:
- That they are shorted by bar
- That they are screwed correctly
- The connection of the leads between the terminal board and the Molex connector
CN3 of the AC drawer
- The connection between the side boards in the J18 and J9 connectors.
- Check dipswitch S7 on the side board:
-Frame low -> Switches 1 and 2 ON / Switches 3, 4, 5 and 6 OFF
-Central frame -> Switch 3 and 4 ON / Switch 1, 2, 5 and 6 OFF
-Frame high -> Switches 5 and 6 ON / Switches 1, 2, 3, and 4 OFF
NOTE: If all switches of S7 of the low frame are OFF the
REMOTE command is disabled on the whole machine.

Iin low

Negative input current above the maximum threshold

E037

(a) Negative DC input current

a) Using Aurora CVI Central Software download the fault log and check the recurrence of the error.
If the error is permanent, try swapping the module with another one of the same rack. If the error persists in the same form contact Service STI Repair.

Knockout fans

Blocked fans

E038

(a) Presence of foreign matter.
(b) Fan failure.

(a) Check the condition of the filters and inspect the front panel at the central fan. If the error is permanent, contact STI Service Repair.
b) Check via Aurora CVI Central which fan is blocked (FAN
1/2/3) and contact STI Service Repair.
This repeated error may lead the module to error E043 Autoexclusion

DC open

DC disconnector open

E039

(a) DC circuit breaker open.
(b) Status auxiliary contact failure.

a) Check the status of the DC disconnect switch by removing the left front panel.
b) Check the status of the auxiliary contact (J14/J11 side board) by acting on the DC contactor (ON/OFF) by verifying via tester the change of status of the connection wiring. Try swapping the module with another one from the same rack.
If the error persists in the same module contact STI Service Repair.

AC open

AC disconnector open

E040

(a) AC switch open/fault at auxiliary contact, dipswitch board fault.
(b) dipswitch board fault.

(a) If the error is present on all modules in the same rack, check the status of the switch and auxiliary contact present inside the AC disconnector.
In the -TL inverters, check the continuity of the auxiliary contact between the AC drawer and the terminal block in the ACbox compartment as follows:
- AC disconnector ON: Continuity between X7D and X7F
- AC disconnector OFF: Continuity between X7D and X7E
Check the connection of the leads between the terminal block and the
Molex CN2 connector of the AC drawer.
If the machine is -TL version, the leads connected to Molex CN2 must connect to the 6-pin Molex connector on the thermostat side of the ACBox drawer.
b) If the error is present only in some modules in the rack, check the
connections in the dipswitch board.
Try swapping the module with one from a different framework. If
the error persists in the same form contact Service STI Repair.

Interr. AC

The internal AC contactor has not switched

E041

(a) Failure of the contactor inside the module.

Perform a complete restart cycle of the inverter.
Try swapping the module with another from the same rack.
If the error persists in the same module, contact Service STI Repair.

Low Bulk

Capacitor voltage below the minimum threshold

E042

(a) DC-side voltage below the minimum threshold

a) Through the Aurora CVI Central Software download the fault log, check the recurrence of the error. If the error is permanent, try swapping the module with another one from the same rack. If the error persists in the same form contact Service STI Repair.

Auto Excl.

Self-exclusion of the module due to repeated failures

E043

(a) The module detected a high number of errors of the same type.

(a) The module is in the state of self-exclusion from the system to avoid further damage. The errors that can bring the module to this state are: E005, E007, E015, E038. It is necessary to use Aurora CVI Central Software to unlock the module and download the fault log to understand the initial cause that generated the self-exclusion state. In case of E038, the module will self-exclude 900 seconds after the first error is detected.

A.I. Warn

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(a) Lack of anti-island pulse on jbox serial.

(a) This status does not affect the output of the inverter in any way and indicates that no module has been set up as stringcomb manager via the Aurora CVI Central Software. In case you are not using FIMER stringcombs, it is possible to set a module as stringcomb manager by setting in number of stringcombs equal to zero (CONFIGURATION PLANT-> STRINGCOMB MANAGER-> SET).

OV network

OV Line voltage

W004

(a) AC voltage too high, high grid impedance, unsuitable AC cable cross section, incorrect AC cable wiring.

a) Fully section the module by opening the AC switch on board inverter, the DC disconnector and the Auxiliary power supply. Through the use of a tester, verify the origin of the fault.

UV net

UV Mains voltage

W005

(a) AC voltage too low, incorrect AC cable wiring.

a) Fully section the module by opening the AC switch on board inverter, the DC disconnector and the Auxiliary power supply. Through the use of a tester, verify the origin of the fault.

OF network

OF network

W006

(a) Grid frequency above the maximum threshold, grid transient, AC breaker trip or inverter edge contactor.

a) Fully section the module by opening the AC switch on board inverter, the DC disconnector and the Auxiliary power supply. Check the origin of the anomaly.

UF network

UF network

W007

(a) Grid frequency below the minimum threshold, grid transient, AC breaker tripping or inverter edge contactor.

a) Fully section the module by opening the AC switch on board inverter, the DC disconnector and the Auxiliary power supply. Check the origin of the anomaly.

Pot. nothing

Zero exported power

W014

(a) Zero exported power

a) Through the Aurora CVI Central Software download the fault log, check the recurrence of the error. If the error is permanent, try swapping the module with another one from the same rack. If the error persists in the same form contact Service STI Repair.

Df/dt network

Df/dt network

W015

(a) Conditions of transient island operation.

a) Fully section the module by opening the AC switch on board inverter, the DC disconnector and the Auxiliary power supply. Check the origin of the anomaly.

Surge Protector Device

W016

(a) DC-side cartridge varistor trip, failure of auxiliary status contact.

a) Remove the left front panel and check:
- That the wiring of the auxiliary contact signal is inserted under the
varistor cartridge
- That the varistor is in good condition (the varistor status indicator should be green, if it is red it should be replaced)

Jbox Err.

One or more StringCombs have communicated a problem

W017

(a) Generic stringcomb error

a) Verify by means of Aurora CVI Central Software the recurrence of the warning (STRINGCOMB MONITORING).
In the stringcombmanager module, it is possible to verify the stringcombs that are the subject of the problem and the type of the warning reported.
In case of a permanent warning, verify the RS485 line between inverter and stringcombs.

Quartz failure

Desynchronization of the two MCU-managed clocks

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(a) Short quartz

(a) The inverter does not give functional problems, there may be problems in recording statistics. Contact Service STI Repair.
When replacing the module, check the synchronicity of date and time with the rest of the modules in the rack

Low Battery

Desynchronization of the two MCU-managed clocks

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(a) Live battery

(a) The inverter does not give functional problems, there may be problems in recording statistics. Contact Service STI Repair.

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