Hitachi X200 Drive

Hitachi X200 Drive Fault Codes:

Fault Code and Meaning	Cause and Remedy
E 01 Over-current event while at constant speed	Cause: The inverter output was short-circuited, or the motor shaft is locked or has a heavy load. The dual-voltage motor is wired incorrectly. Remedy: Check for short circuits at the inverter output. Check if the motor shaft is physically locked. Reduce the load on the motor. Verify dual-voltage motor wiring. Press Stop/Reset key to clear.
E 02 Over-current event during deceleration	Cause: Excessive current detected during deceleration. Inverter output short-circuited, motor locked, or heavy load. Remedy: Check for short circuits or ground faults. Increase deceleration time. Check for mechanical lock-up. Press Stop/Reset key to clear.
E 03 Over-current event during acceleration	Cause: Excessive current detected during acceleration. Inverter output short-circuited, motor locked, or heavy load. Remedy: Check for short circuits. Increase acceleration time. Check if motor load is too heavy for the inverter rating. Press Stop/Reset key to clear.
E 04 Over-current event during other conditions	Cause: Excessive current detected during conditions other than constant speed, accel, or decel. Remedy: Check motor wiring and insulation. Inspect for intermittent mechanical binding. Press Stop/Reset key to clear.
E 05 Overload protection	Cause: Motor overload detected by the electronic thermal function. The inverter trips to protect the motor. Remedy: Reduce the motor load. Check if the electronic thermal setting matches the motor. Allow motor to cool before restarting.
E 07 Over-voltage protection	Cause: The DC bus voltage exceeds a threshold, often due to regenerative energy from the motor (acting as a generator). Remedy: Increase deceleration time. Install a braking resistor if deceleration is too fast. Check input voltage stability.
E 08 EEPROM error	Cause: Built-in EEPROM memory has problems due to electrical noise or excessive temperature. Remedy: Check ambient temperature and cooling. Check for sources of electrical noise (grounding). Important: Confirm parameter data values are still correct. If power was turned OFF while [RS] Reset input was ON, this error occurs on restore.
E 09 Under-voltage error	Cause: Decrease of internal DC bus voltage below threshold (Control circuit fault). Can generate excessive motor heat or low torque. Remedy: Check input power supply voltage. Check for loose power connections. Press Stop/Reset key to clear.
E 11 CPU error	Cause: A malfunction in the built-in CPU has occurred. Remedy: Cycle power to the inverter. Check for excessive electrical noise interference. If the error persists, the unit may require service.
E 12 External trip	Cause: A signal on an intelligent input terminal configured as EXT (External Trip) has occurred. Remedy: Investigate the external device connected to the EXT terminal. Remove the external error condition. Press Stop/Reset key to clear.
E 13 USP (Unattended Start Protection)	Cause: Power was applied while a Run signal was already present (and USP is enabled). Remedy: Turn off the Run signal (switch or command). Press Stop/Reset key to clear the error. Re-apply Run signal to start.
E 14 Ground fault	Cause: Ground fault detected between the inverter output and the motor during powerup tests. Remedy: Check wiring between inverter and motor for damage. Check motor insulation resistance. Note: This feature protects the inverter, not humans.
E 15 Input over-voltage	Cause: Input over-voltage detected after the inverter has been in Stop Mode for 100 seconds. Remedy: Check the main power supply voltage. Wait for the voltage to stabilize. Once the fault is cleared, the inverter can enter Run Mode again.
E 21 Inverter thermal trip	Cause: Inverter internal temperature is above the threshold. Thermal sensor detected excessive temperature of power devices. Remedy: Check if cooling fan is running. Check for blocked air vents or heatsink dust. Reduce ambient temperature. Reduce carrier frequency or load.
E 30 Driver error	Cause: Internal inverter error at the safety protection circuit between CPU and main driver unit. Excessive electrical noise may be the cause. Remedy: Check proper grounding and noise suppression. Cycle power. If persistent, replace unit/board.
E 35 Thermistor error	Cause: Thermistor connected to terminals [6] and [L] has sensed temperature is too high. Remedy: Check motor temperature. Check thermistor wiring and connection at terminals [6] and [L]. Verify thermistor settings.
E 37 Safety Stop	Cause: Safety stop signal is given. Remedy: Identify source of Safety Stop signal. Reset the safety circuit.
E 60 Communications error	Cause: The inverter’s watchdog timer for the communications network has timed out. Remedy: Check communication cables and connections. Check master controller status. Verify baud rate and communication settings.
– – – Under-voltage (brownout) with output shutoff	Cause: Low input voltage caused the inverter to turn OFF output and try to restart. If restart fails, this alarm trips. Remedy: Check power supply stability. Check for voltage sags or brownouts on the line. Press Stop/Reset to clear if power is restored.