User manual

INVERTER FAULT CODES
The inverter display screen provides fault information. In addition, the inverter
firmware utilizes a Modbus variable to indicate a fault condition. Each bit in this fault
variable represents a fault type, the same fault type displayed on the screen. The
Modbus information for the bit assignments and specific fault variables for the fault
categories are as follows:
Table 8‑2. Fault categories
Description Screen
Display
Category
Bit Number Hex Value Decimal Value
Modbus register number = 42102
Drive fault DRV 0 1 1
Voltage fault VLT 1 2 2
Grid fault GRD 2 4 4
Temperature fault TMP 3 8 8
System fault SYS 4 10 16
Latching fault 15 8000 32768
For each fault category, another fault variable provides detailed information on which
fault has occurred within this category. The following tables list the possible faults
within each category and related information:
•
Hexidecimal value: Value displayed following the category
• Screen display text: Text displayed on the second screen
• Description: Describes the fault
• Action: Necessary steps to resolve the fault
Drive Faults
The following table lists the drive protection faults.
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8‑8 Troubleshooting and Solar Energy Technical Support 570-1001792-05A