Drive Programming Instruction Error

What does E45 mean?

This fault indicates that the inverter encountered a command within the Drive Programming logic that it could not execute. This could be due to a syntax error, an unsupported instruction, or a logical conflict within the program, leading to an inverter trip.

• Syntax error in a specific line of the Drive Programming (DP) code (e.g., missing operand, incorrect keyword, unbalanced parentheses).
• Using an instruction that is not supported by the specific inverter model or its current firmware version.
• Logical error in the DP program causing an operation to be attempted with invalid data (e.g., division by zero, accessing an undefined memory address).
• Corruption of a specific part of the DP program memory, leading to an unexecutable instruction.
• Mismatch between expected data types and actual data types in a programmed operation (e.g., performing arithmetic on a string).

Click steps to track your progress.

1. 1

   1. Isolate the specific line number or instruction indicated in the inverter's fault log (if available) for the Drive Programming (DP) error.

2. 2

   2. Compare the problematic instruction against the inverter's Drive Programming manual to verify correct syntax and supported commands.

3. 3

   3. Check for logical errors, such as attempting mathematical operations with non-numeric values or division by a potential zero during runtime.

4. 4

   4. Re-enter the suspected erroneous line of code carefully, paying close attention to syntax and required arguments.

5. 5

   5. If the program was uploaded from an external tool, try recreating the program manually in the inverter to rule out transfer errors or format issues.