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elect the installation location
It is recommended to undertake connection, configuration and acquisition operations
before mounting the CDD in a permanent location.
During acquisition of the inverters in part 5, it can be determined if reception from the
inverters and from the wireless router is sufficient, or if the position or location should
be changed.
Consider the following before installing the MICRO/CDD system:
•
Evaluate possible obstacles that can restrict or nullify the radio communication among MICROs and CDD.
•
Analyze the communication quality considering the possibility of having to extend the radio antenna
externally (CDD Antenna Extension Cable).
•
Each CDD has a capacity to monitor up to 30 MICRO inverters; for more than 30 MICRO inverters, it is
necessary to install more than one CDD.
•
For wireless (WLess) connection with a router, make sure the router is available on the compatibility list
found in the appendix, part 7, and available online at www.abb.com/solarinverters.
•
For Ethernet communication, there must be an unused Ethernet port on the router.
•
For installations with multiple CDDs, it is recommended to acquire all MICRO inverters before mounting
them on the roof, using the "MICRO preinstallation kit" and related guidelines.
•
Choose a place close to an electrical outlet where the bottom part of the device, (where connections are
present), remains accessible.
•
Because the CDD uses radio waves to transmit and receive data, it is important to assess this factor in
choosing the installation position.
Walls in reinforced cement and surfaces covered in metal (doors, shutters, etc.) can markedly reduce the
reach of the device as noted below.
Material
Open Field
Wood / Glass
Stone / Pressed cardboard
Reinforced concrete (reduction increases
with amount of reinforcement)
Metal
The radio signal level between the CDD and MICRO inverter can be increased in several
ways as illustrated below:
Relative signal range reductions
Approximately 100 m
0 – 10%
10 – 40%
10 – 90%
Up to 100%
- 11 -
2 - Plan the installation
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