SI4548-US-10 Manual
Table Of Contents
- 1 Information on this Manual
- 2 Sunny Island 4548-US/6048-US
- 3 Safety Precautions
- 4 Assembly
- 5 Opening and Closing
- 6 Electrical Connection
- 7 Control Elements
- 8 Initial Start-Up
- 9 Switching On and Off
- 10 Operation
- 11 Archiving Data on an SD Card
- 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
- 14 Connecting External Sources
- 14.1 Generator
- 14.1.1 Parallel Connection
- 14.1.2 Generator Start Options
- 14.1.3 Generator Operation
- 14.1.4 Manual Generator Operation
- 14.1.5 Automatic Generator Operation
- 14.1.6 Limits and Power Control
- 14.1.7 Run Times
- 14.1.8 Operation Together with PV Inverters and Wind Power Inverters
- 14.1.9 Stopping the Generator
- 14.1.10 Stopping the Sunny Island
- 14.1.11 Disturbances
- 14.2 Grid
- 14.2.1 Limits of the Voltage Range and Frequency Range
- 14.2.2 Starting the Sunny Island
- 14.2.3 Operation in the Event of Grid Failure in a Grid-Tie Backup Configuration
- 14.2.4 Backup Operation and Anti-Islanding
- 14.2.5 Grid Reconnection
- 14.2.6 Grid Operation
- 14.2.7 Grid Failure
- 14.2.8 Disturbances
- 14.2.9 Limits and Power Control
- 14.2.10 Operation Together with PV Inverters and Wind Power Inverters
- 14.3 Generator and Grid
- 14.1 Generator
- 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
- 18 Maintenance and Care
- 19 Parameter Lists
- 20 Troubleshooting
- 21 Accessories
- 22 Technical Data
- 23 Glossary
- 24 Contact
6 Electrical Connection SMA America, LLC
54 SI4548_6048-US-TB_en-13 Technical description
6.4.3 Communication for Multi-Device Connection
The Sunny Island can be connected in parallel, as a split-phase system or in a three-phase system with
other Sunny Island devices in order to increase the overall power. The Sunny Island inverters
communicate with each other via an RJ45 data cable. A black RJ45 cable is provided with each
Sunny Island. You need it in order to establish an (internal) communication between several
Sunny Islands inverters. The maximum overall length of the communication bus of 98 ft. (30 m) must
not be exceeded. If you operate only one Sunny Island in your system, the cable is not required.
Proceed as follows to implement the connection:
1. Remove one of the two plugs from the cable support sleeve.
2. Lead the RJ45 cable from the outside through the plugs inside the master.
3. Remove the terminator plugged into the "ComSyncOut" pin connector of the master and insert
it in "ComSyncIn" pin connector of the master.
4. Plug the RJ45 cable into the "ComSyncOut" pin connector.
5. Connect the master with slave:
Number of slaves Connection procedure
1 slave • Take the RJ45 cable coming from the master, insert it into the
slave and plug it into the "ComSyncIn" pin connector.
• Leave the terminator plugged into the "ComSyncOut" pin
connector.
☑ Master and slave are connected.
2 Slaves • Take the RJ45 cable coming from the master, insert it into the
slave and plug it into the "ComSyncIn" pin connector.
• Remove the terminator in the slave 1 from the "ComSyncOut"
pin connector.
• Plug the RJ45 cable, which is included in the scope of delivery,
into the "ComSyncOut" pin connector of slave 1.
• Lead the RJ45 cable coming from the slave 1 into the slave 2
and plug it into the "ComSyncIn" pin connector.
☑ The master and the slaves are connected.