SI4548-US-10 Manual

ManualsBrandsSMA America ManualsInverters Off-gridSMA Sunny Island 5750W Inverter

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Table Of Contents

1 Information on this Manual
- 1.1 Validity
- 1.2 Target Group
- 1.3 Additional Information
- 1.4 Terminology
2 Sunny Island 4548-US/6048-US
- 2.1 Properties
- 2.2 At a Glance
- 2.3 Scope of Delivery
- 2.4 Required Tools and Resources
- 2.5 Identifying the Sunny Island
3 Safety Precautions
- 3.1 Important Information on Operation
- 3.2 Potential Hazards
4 Assembly
- 4.1 Selecting the Mounting Location
- 4.2 Mounting the Sunny Island with the Wall Mounting Bracket
  - 4.2.1 Mounting the Sunny Island on a Stone Wall
  - 4.2.2 Mounting the Sunny Island Using Wall Studs
5 Opening and Closing
- 5.1 Opening the Sunny Island
- 5.2 Closing the Sunny Island
6 Electrical Connection
- 6.1 Grounding
- 6.2 DC Connection
- 6.3 AC Connection
- 6.4 Additional Connections
- 6.5 Interface for External Communication
  - 6.5.1 Connection of the Interface for External Communication
7 Control Elements
- 7.1 Display Messages
- 7.2 DC Circuit Breaker
- 7.3 Buttons
- 7.4 Meaning of the Light-Emitting Diodes (LED's)
- 7.5 SD Card
8 Initial Start-Up
- 8.1 Requirements
- 8.2 Starting the Quick Configuration Guide (QCG)
- 8.3 Commissioning the Battery Current Sensor
9 Switching On and Off
- 9.1 Switching On
- 9.2 Stopping the Sunny Island (Standby)
- 9.3 Switching Off
- 9.4 Disconnecting the Device from Voltage Sources
- 9.5 Reactivating the Device Following Automatic Shutdown
10 Operation
- 10.1 Menu Structure
- 10.2 Changing Parameters
- 10.3 Direct Access - Direct Access to the Parameters
- 10.4 Compact Meters
- 10.5 Entering the Installer Password
- 10.6 Display Messages (Overview)
- 10.7 Parameter Display
- 10.8 Display of Events
- 10.9 Display of Warnings and Failures
11 Archiving Data on an SD Card
- 11.1 Inserting the SD Card
- 11.2 Removing the SD Card
- 11.3 Saving and Loading Parameters
- 11.4 Writing Log Data
- 11.5 Status Messages
- 11.6 Updating the Firmware
12 Additional Functions
- 12.1 Load Shedding
- 12.2 Sleep Mode
- 12.3 Time-Controlled Operation
- 12.4 Overload and Short-Circuit Behavior
- 12.5 Mixed Operation with Sunny Island inverters of Different Power
- 12.6 Device Faults and Autostart
- 12.7 Automatic Frequency Synchronization
- 12.8 Time-Controlled Standby
- 12.9 Behavior in the Event of a Failure in a Three-Phase System
13 Battery Management
- 13.1 Battery Temperature
- 13.2 Start Options
- 13.3 State of Charge (SOC) and State of Health (SOH)
- 13.4 Charge Control
- 13.5 Battery Preservation Mode
- 13.6 Battery Diagnosis
- 13.7 Battery Lead Resistance
14 Connecting External Sources
- 14.1 Generator
- 14.2 Grid
- 14.3 Generator and Grid
15 Relays
16 Multicluster Operation
- 16.1 Communication between the Sunny Island inverters
- 16.2 Initial Start-Up of the Multicluster System
- 16.3 Switching a Multicluster System On and Off
- 16.4 Generator Operation
- 16.5 Behavior with Different States of Charge
- 16.6 Testing the Multicluster Communication
- 16.7 Automatic Frequency Synchronization
- 16.8 Updating the Firmware
- 16.9 Error Handling in the Multicluster System
- 16.10 Grid Operation
- 16.11 Generator Emergency Operation
17 PV Inverters
- 17.1 Connection to the Stand-Alone Grid (Protected Load Switch)
- 17.2 Setting of the Off-Grid Parameter
- 17.3 Configuration
- 17.4 Sunny Boy Parameter Settings
- 17.5 Frequency-Shift Power Control (FSPC)
18 Maintenance and Care
- 18.1 Enclosure
- 18.2 Cleaning the Fans
- 18.3 Display
- 18.4 Function
- 18.5 Battery
- 18.6 Disposal
19 Parameter Lists
- 19.1 Display Values
- 19.2 Adjustable Parameters
- 19.3 Diagnosis (300#)
- 19.4 Events, Warnings and Errors (History)
  - 19.4.1 Failure/Event (400#)
- 19.5 Functions in Operation
  - 19.5.1 Operation (500#)
- 19.6 Direct Access to the Parameters
  - 19.6.1 Direct Access (600#)
20 Troubleshooting
- 20.1 Error Confirmation
- 20.2 Autostart Handling
- 20.3 Master-Slave Handling
- 20.4 Handling of Pending Errors during the Booting Procedure
- 20.5 Display of Failures and Events
- 20.6 Events
- 20.7 Failure Categories
- 20.8 Warnings and Error Messages
- 20.9 Troubleshooting
- 20.10 What to Do during Emergency Charge Mode
21 Accessories
22 Technical Data
- 22.1 Sunny Island 4548-US
- 22.2 Sunny Island 6048-US
23 Glossary
24 Contact

SMA America, LLC 12 Additional Functions

Technical description SI4548_6048-US-TB_en-13 103

The figure shows an example of the settings if the one-step load shedding function at night is to be

avoided as much as possible. From 6:00 a.m. to 10:00 p.m. the load shedding is activated for a state

of charge (SOC) of 40%, at nighttime (from 10:00 p.m. to 6:00 a.m.), however, the state of charge

of the battery is allowed to go down to 30% before the load-shedding contactor is activated.

The load shedding function can be assigned a total of two times. Thus, in the above listed parameters

the part "Lod1" (see parameter "242.01 Lod1SocTm1Str to "242.06 Lod1Tm2Str") represents the first

assigned function. Another part "Lod2" (see parameter "242.07 Lod2SocTm1Str" to

"242.12 Lod2Tm2Str") represents a second, identical function. These two battery state-dependent

load-shedding functions allow a step by step load shedding where different load groups with different

SOC values can be defined with different priorities.

Define the time intervals t1 and t2:

• Starting time t1: with the "242.05 Lod1Tm1Str" parameter, set the start time for t1

(and with it the end of t2).

• Starting time t2: with the "242.06 Lod1Tm2Str" parameter, set the start time for t2

(and with it the end of t1).

• If the time intervals t1 (Lod1Tm1Str) and t2 (Lod1Tm2Str) are consistent with one another, only

t1 will be activated.

Set the battery state of charge at which the time interval t1 or t2 will start/stop:

• The battery state of charge during the t1 interval, the recognition of which will lead to the

load-shedding function being started: Parameter "242.01 Lod1SocTm1Str"

• The battery state of charge during the t1 interval, the recognition of which will lead to the

load-shedding function being stopped: Parameter "242.02 Lod1SocTm1Stp"

• The battery state of charge during the t2 interval, the recognition of which will lead to the

load-shedding function being started: Parameter "242.03 Lod1SocTm2Str"

• The battery state of charge during the t2 interval, the recognition of which will lead to the

load-shedding function being stopped: Parameter "242.04 Lod1SocTm2Stp"