SMA Communit-10 - Manual (Page 38)

10 Troubleshooting SMA Solar Technology AG
38 Communit-IA-A1-en-22 Installation Manual
10 Troubleshooting
Symptom Cause and corrective measure
No system communication Configuration error
Corrective measure:
• Ensure that all communication devices for the PV system network are correctly
configured (see information on IP address allocation in the Technical Information
"Plant Communication in Large-Scale PV Power Plants" at www.SMA.de).
Cabling error in the RS485 cable
Corrective measure:
• Ensure that the RS485 cable is connected correctly (see Section 6.3 and the poster
"RS485 Cabling Plan").
Error in the patch cable connection
Corrective measure:
• Ensure that the send and receive direction of the optical fiber nodes is correct.
Communication disturbance Unsuitable antenna mounting location
Corrective measure:
• Determine the optimum mounting location for the antenna (see Section 5.4
"Determining the Optimum Mounting Location for the Antenna", page 19).