E-40Â My Function / Logic Trace fault in Toshiba drive
E-40 My Function / Logic Trace Error fault in Toshiba drive
Description Toshiba drives feature a built-in mini-PLC called "My Function" or "Logic Trace." Users can write custom logic scripts (AND, OR, Timers) to control the drive without an external PLC. E-40 indicates a runtime error in this custom script. It is equivalent to a "Syntax Error" or "Loop Error" in programming. Causes
1. Infinite Loop: The custom logic created a loop that never exits, freezing the CPU.
2. Invalid Variable: The script tried to access a parameter or terminal that doesn't exist on this model.
3. Memory Overflow: The script is too complex or used too many timers/counters for the drive's memory.
4. Corrupt Upload: The logic program was uploaded via PC software but got corrupted during transfer. Solution You must disable "My Function" to recover the drive.
1. Navigate to the My Function parameter group (usually F900+). 2. Find the "My Function Selection" parameter. Set it to "0" (Disable/Off). 3. Cycle power. The drive should now operate as a standard VFD.
To fix the root cause, you need to connect the "PCM001" or "PCT001" software, download the logic script, and debug it. Look for logic loops or undefined variables. Re-upload only after verifying the code.
Description Toshiba drives feature a built-in mini-PLC called "My Function" or "Logic Trace." Users can write custom logic scripts (AND, OR, Timers) to control the drive without an external PLC. E-40 indicates a runtime error in this custom script. It is equivalent to a "Syntax Error" or "Loop Error" in programming. Causes
1. Infinite Loop: The custom logic created a loop that never exits, freezing the CPU.
2. Invalid Variable: The script tried to access a parameter or terminal that doesn't exist on this model.
3. Memory Overflow: The script is too complex or used too many timers/counters for the drive's memory.
4. Corrupt Upload: The logic program was uploaded via PC software but got corrupted during transfer. Solution You must disable "My Function" to recover the drive.
1. Navigate to the My Function parameter group (usually F900+). 2. Find the "My Function Selection" parameter. Set it to "0" (Disable/Off). 3. Cycle power. The drive should now operate as a standard VFD.
To fix the root cause, you need to connect the "PCM001" or "PCT001" software, download the logic script, and debug it. Look for logic loops or undefined variables. Re-upload only after verifying the code.
Comments
Post a Comment