SMA SUNNY MINI CENTRAL 4600A, SUNNY MINI CENTRAL 5000A, SUNNY MINI CENTRAL 6000A User Manual

SMC46-60A-BA-BEN111320 | IME-SMC50A_60A | Version 2.0

EN

PV Inverter

SUNNY MINI CENTRAL 4600A/5000A/6000A

User Manual

Installer contact

ES

Symbols on the Inverter

Operation display.

Ground fault or varistor defective.
Please inform your installer.

An error has occurred. Please inform your installer immediately.

Tap to switch on the display light and switch to the next message.

Symbols on the Type Label

Beware of dangerous electrical voltage.
The inverter operates at high voltages. All electrical work on the inverter may be

carried out by quali󹻭ed personnel only.

Beware of hot surface.
The inverter can become hot during operation. Avoid contact during operation.

Observe the enclosed documentation.

The inverter must not be disposed of with the household waste.
Further disposal information can be found in the enclosed installation guide.

CE mark. The inverter complies with the requirements of the applicable EC
guidelines.

RAL quality mark for solar products. The inverter complies with the requirements of
the German Institute for Quality Assurance and Labeling.

Direct Current (DC)

Alternating Current (AC)

The inverter is protected against penetration by dust particles and water jets from
any angle.

The inverter has a transformer.

AC

Abbreviation for "alternating current".

DC

Abbreviation for "direct current".

Derating

A controlled reduction in performance, usually dependent on component temperatures.

Electronic Solar Switch (ESS)

The Electronic Solar Switch is part of the inverter's DC disconnection unit. The
Electronic Solar Switch must be securely inserted into the bottom of the inverter and may

only be removed by quali󹻭ed personnel.

Grid impedance

The grid impedance is a characteristic grid speci󹻭cation, which is determined both by the grid

infrastructure, and by the number of power suppliers and power consumers. If the supply for the
grid section should drop due to a grid shutdown of the preceding energy suppliers (medium-voltage
transformers), the grid impedance will change abruptly. In order to detect this and to prevent the
formation of an unwanted off-grid system, SMA Grid Guard monitors the grid impedance and
disconnects the inverter from the grid in the event of a sudden impedance variation.

MPP (Maximum Power Point)

Operational point of the inverter, dependent on current/voltage of the PV generator. The actual
position of the MPP changes constantly, depending on the level of solar irradiation and the cell
temperature.

PV

Abbreviation for photovoltaics.

SMA Power Balancer

The SMA Power Balancer prevents the formation of an unbalanced load > 5kVA (in Italy > 6kVA)
during three-phase grid feed-in. To this effect, 3 Sunny Mini Centrals are each connected via a control
line to a 3-phase feeding unit.

Unbalanced load

The unbalanced load is the difference between the power fed into the grid at the individual line
conductors. In Germany, this must not exceed 5 kVA. In Italy, the unbalanced load is restricted to 6
kVA.

Varistor

The varistors protect the electronics in the inverter from atmospherically coupled energy peaks, such as
those that can occur when lightning strikes nearby.

EXPLANATION OF SYMBOLS GLOSSARY

CONTACT

If you have technical problems, 󹻭rst contact your installer. The following information is required in

order to provide you with the necessary assistance:

• Inverter device type

• Inverter serial number

• Type and number of PV modules connected

• Blink code or display message of the inverter

• Optional equipment (e.g. communication devices)

SMA Solar Technology AG

Sonnenallee 1
34266 Niestetal, Germany
www.SMA.de

SMA Serviceline

Inverters: [phone]
Communication: [phone]
Fax: [phone]
E-Mail: [e-mail]

Visual Inspection

Check the inverters and the cables for visible external damage. Contact your installer if you 󹻭nd any

defects. Do not perform any repair work yourself.

Maintenance and Cleaning

Ask your installer to check for proper inverter operation at regular intervals.

VISUAL INSPECTION, MAINTENANCE AND CLEANING

If your inverter is equipped with a communication component, then numerous measuring channels
and messages can be transmitted for diagnosis.

Measuring channel Description

Balancer Displays the currently active operating mode of the inverter which is set

under the operating parameter "PowerBalancer".

dZac Change of the grid impedance

Error Identi󹻭cation of the current disturbance/error.

E-total Total amount of energy fed into the grid

Event-Cnt Number of events that have occurred

Fac Grid frequency

h-On Total number of operating hours

h-total Total number of operating hours for feeding operations

Iac Grid current

Ipv DC current

Mode Display of the current operating mode

Pac Generated AC power

Power On Total number of grid switch-ons

Riso Insulation resistance of the PV system to the grid connection

Serial number Inverter serial number

Vac Grid voltage

Vpv PV input voltage

Vpv-Setpoint PV target voltage

Your inverter can be in various operating modes. These are displayed as status messages, which can
vary according to the method of communication.

Message Description

Balanced The inverter has disconnected itself from the grid, or is limiting its output to

5 kVA over a 10 minute average. The inverter is part of a three-phase system
with two further inverters and equipped with the Power Balancer for preventing
asymmetric loads.

Derating Overtemperature in the inverter. The inverter will reduce its output to prevent

overheating. To avoid unnecessary output losses, the design of the system
should be checked. Please inform your installer.

Disturbance Disturbance. This message appears for safety reasons and prevents the inverter

from connecting to the grid. Please inform your installer.
Error An error has been detected. Please inform your installer.
grid mon. Grid monitoring.

This display appears during the start phase, before the inverter is connected to

the grid, predominantly in the mornings and evenings when the solar irradiation

is low and after an error.
MPP The inverter is operating in MPP mode. MPP is the standard display message

when operating under normal irradiation conditions.
MPP Peak The inverter is operating in MPP mode above its nominal power.
MPP-Search The inverter is calculating the MPP.
Off Grid The inverter is in "Island" mode. This mode is specially designed for operation in

an off-grid system.
offset Offset adjustment of measurement electronics.
Riso Measurement of the insulation resistance of the PV system.
Stop Interruption of operation.
V-Const Constant voltage operation.
waiting The switch-on conditions are not (yet) ful󹻭lled.

DANGER!

Electric shock caused by high voltage in the inverter.

Even when no external voltage is present, there can still be high voltages in the device.

The following work may be carried out by quali󹻭ed personnel only:

• Electrical installation

• Repairs

• Modi󹻭cation

CAUTION!

Risk of injury from touching the enclosure during operation.
Burns to the body.

• Only touch lid and display during operation.

NOTICE!

Overvoltage in the inverter if yellow LED 󹢵ashes 4 times.

Destruction of the inverter.

• Inform your installer immediately if the yellow LED starts
󹻮ashing and the following display message appears.

Operation

The display shows current values of your system. The displayed values
are updated every 5 seconds. The display is operated by tapping on it.

Tap once

The background illumination is switched on. After 2 minutes, the
illumination switches off automatically.

Tap again

The display switches to the next message.

Display messages

In operation

Upon error-free connection of the inverter to the grid, the following

noti󹻭cations are shown in turn after approximately one minute. Each
noti󹻭cation appears for 󹻭ve seconds, then the cycle starts again.

Power produced on the current day
Operating condition

Current feed-in power
Voltage of the PV generator

Total amount of feeding-in energy
Total number of operating hours for feeding operations

Disturbance

In the event of a disturbance, the inverter will display the status
"Disturbance" and an error message. Please inform your installer.

The following noti󹻭cations will be issued:

Power produced on the current day
Operating condition "Disturbance"

Operating condition
Error message

Measured value at time of disturbance
Current measured value (only displayed if a measured value is
responsible for the disturbance)

DC overvoltage

The DC input voltage connected to the inverter is too high.
Please inform your installer immediately.

State Designation Function

All LEDs are onInitialization The inverter is initializing.

All LEDs are
off

Deactivation The input voltage at the inverter is too low for grid

feeding.

Green LED is
permanently
on

Feeding
operation

The inverter is feeding power into the public grid.

Green LED is

󹻮ashing

Waiting, grid
monitoring

The inverter is monitoring the grid and is waiting for
the DC voltage to reach a certain level so that it can
start feeding the grid.

Stop Interruption of operation.

Derating Power limitation in the inverter.

Red LED is onError A ground fault has occurred or one of the thermally-

monitored varistors on the DC input site is defective.
Please inform your installer.

Yellow
LED is on
continuously

Disturbance The inverter is operating in "Operation constantly

disabled" mode. This can have several causes.
Please inform your installer.

Yellow LED is

󹻮ashing

Disturbance The inverter is indicating a disturbance. This can

have several causes. Please inform your installer.

LED MODES

SAFETY PRECAUTIONS PRODUCT OVERVIEW

Air grills

Enclosure lid

Display

LEDs

Serial number

Identi󹻭cation of the Sunny Mini Central by the type label

In operation

Ground fault or varistor defective

Disturbance

DISPLAY

STATUS MESSAGESMEASURING CHANNELS