E-19Â CPU / Gate Array Failure fault in Toshiba drive
E-19 CPU / Gate Array Failure fault in Toshiba drive
Description E-19 is a severe hardware fault. It indicates a failure in the communication between the main CPU and the Gate Drive ICs (the chips that actually fire the IGBTs) or a failure of the CPU itself. It effectively means the drive's "nervous system" is paralyzed. This is rarely a setting issue and almost always a physical board failure. Causes
1. Component Failure: An optocoupler, gate driver IC, or the CPU itself has burned out.
2. Conductive Dust: Metal shavings or carbon dust have settled on the circuit board, creating short circuits between tiny logic pins.
3. Corrosion: Moisture or chemical fumes have corroded the board traces.
4. Lightning Strike: A massive surge bypassed the input protection and fried the delicate logic circuits. Solution There is very little field troubleshooting for an E-19.
1. Power cycle the drive. Leave it off for 5 minutes to fully discharge capacitors and clear volatile memory. Power back on. If E-19 clears, it may have been a one-time glitch caused by extreme noise (EMI).
2. Check for noise. If E-19 appears only when a specific contactor closes nearby, you have an EMI issue. Install snubbers on coils and check grounding.
3. Inspect the board. Remove the cover and look for black soot, white corrosion, or water marks on the green circuit boards. Clean with electronic cleaner and a soft brush if dirt is found.
If the fault returns immediately upon power-up, the Control Board or the Main Power Board must be replaced. The drive is essentially dead.
Description E-19 is a severe hardware fault. It indicates a failure in the communication between the main CPU and the Gate Drive ICs (the chips that actually fire the IGBTs) or a failure of the CPU itself. It effectively means the drive's "nervous system" is paralyzed. This is rarely a setting issue and almost always a physical board failure. Causes
1. Component Failure: An optocoupler, gate driver IC, or the CPU itself has burned out.
2. Conductive Dust: Metal shavings or carbon dust have settled on the circuit board, creating short circuits between tiny logic pins.
3. Corrosion: Moisture or chemical fumes have corroded the board traces.
4. Lightning Strike: A massive surge bypassed the input protection and fried the delicate logic circuits. Solution There is very little field troubleshooting for an E-19.
1. Power cycle the drive. Leave it off for 5 minutes to fully discharge capacitors and clear volatile memory. Power back on. If E-19 clears, it may have been a one-time glitch caused by extreme noise (EMI).
2. Check for noise. If E-19 appears only when a specific contactor closes nearby, you have an EMI issue. Install snubbers on coils and check grounding.
3. Inspect the board. Remove the cover and look for black soot, white corrosion, or water marks on the green circuit boards. Clean with electronic cleaner and a soft brush if dirt is found.
If the fault returns immediately upon power-up, the Control Board or the Main Power Board must be replaced. The drive is essentially dead.
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