Hello,
Looking for an expanded list of Hitachi SJ300 alarms and troubleshooting info if possible. I have issues with a Hitachi inverter (SJ300-22HFU to be exact)
Hitachi SJ300 Inverter Fault and Alarm Information
The microprocessor in the inverter detects a variety of fault conditions and captures the event recording it in a history table. The inverter output turns OFF, or "trips" similar to the way a circuit breaker trips due to an over-current condition. Most faults occur when the motor is running. However, the inverter could have an internal fault and trip in Stop Mode. In either case, you can clear the fault by pressing the Stop/Reset key.
The conditions at the time of an error provide important clues to help you understand the cause. The SJ300 inverter displays a "status at trip point" digit to the right of the decimal point for some error codes. For example, E07.2 means Error 7 occured and the inverter status was condition # "2" when the error occurred.
- .0 = RESET
- .1 = STOP
- .2 = DECELERATION
- .3 = CONSTANT SPEED
- .4 = ACCELERATION
- .5 = f0 STOP
- .6 = STARTING
- .7 = DC BRAKING
- .8 = OVERLOAD RESTRICTION
Stand by for more...
An error code will appear on the display automatically when a fault causes the inverter to trip. The following table lists the cause associated with the error.
- E01 - Over current event while at constant speed: The inverter output was short-circuited, or the constant speed motor shaft is locked or has a heavy load. These conditions cause excessive current for the inverter, so the inverter output is turned OFF. (or the dual-voltage motor is wired incorrectly)
- E02 - Over current event during deceleration: The inverter output was short-circuited, or the constant speed motor shaft is locked or has a heavy load. These conditions cause excessive current for the inverter, so the inverter output is turned OFF. (or the dual-voltage motor is wired incorrectly)
- E03 - Over current event during acceleration: The inverter output was short-circuited, or the constant speed motor shaft is locked or has a heavy load. These conditions cause excessive current for the inverter, so the inverter output is turned OFF. (or the dual-voltage motor is wired incorrectly)
- E04 - Over current event during other conditions: DC braking power(A054) is set too high, or a current transformer error occurred, or a noise source induced the error.
- E05 - Overload protection: When a motor overload is detected by the electronic thermal function, the inverter trips and turns OFF its output.
- E06 - Braking resistor overload: When the regenerative braking resistor exceeds the usage time allowance or usage ratio, the inverter trips and turns OFF its output to the motor.
- E07 - Over voltage protection: When the DC bus voltage exceeds a threshold, due to regenerative energy from the motor.
- E08 - EEPROM error: When the built-in EEPROM memory has problems due to noise or excessive temperature, the inverter trips and turns OFF its output to the motor.
- E09 - Under-voltage error: A decrease of internal DC bus voltage below a threshold results in a control circuit fault. This condition can also generate excessive motor heat or cause low torque. The inverter trips and turns OFF its output.
- E10 - CT (current transformer): If a strong source of electrical interference is close to the inverter or a fault occurs in a built-in CT (current transformer), the inverter trips and turns its output OFF.
- E11 - CPU error: A malfunction in the built-in CPU has occurred, so the inverter trips and turns OFF its output to the motor.
- E12 - External trip: A signal on an intelligent input terminal con figured as EXT has occurred. The inverter trips and turns OFF the output to the motor.
- E13 - USP: When the Unattended Start Protection (USP) is enabled, an error occurred when power is applied while a Run signal is present. The inverter trips and does not go into Run Mode until the error is cleared.
- E14 - Ground fault: The inverter is protected by the detection of ground faults between the inverter output and the motor during powerup tests. This feature protects the inverter, and does not protect humans.
- E15 - Input over-voltage: When the input voltage is higher than the specified value, it is detected 60 seconds after powerup and the inverter trips and turns OFF its output.
- E16 - Instantaneous power failure: When the input power is removed for more than 15ms, the inverter trips and the output to the motor turns OFF. If the power failure duration exceeds the duration set in parameter B002, it is considered a power failure. When input power is restored, the inverter restarts if the Run signal is present, depending on the restart condition
- E21 - Inverter thermal trip: When the inverter internal temperature is above the threshold, the thermal sensor in the inverter module detects the excessive temperature of the power devices and trips, turning the inverter output OFF.
- E23 - Gate array error: An internal inverter error has occurred in communications between the CPU and gate array IC.
- E24 - Phase failure detection: One of three lines of the 3-phase power is missing.
- E30 - IGBT error: When an instantaneous over-current condition occurs on any IGBT (output transistor) device, the inverter trips. then it turns the outputs OFF in order to protect the circuitry.
- E35 - Thermistor: When a thermistor is connected to terminals [THM] and [CM1] and the inverter has sensed the temperature is too high, the inverter trips and turns OFF the output.
- E36 - Brake error: When the inverter releases the brake and cannot detect whether the external brake is ON or OFF within the waiting time (set by parameter 8024), the inverter trips and turns OFF the output to the motor.
- E6X - Expansion card #1 connection error: An error has occurred in an expansion card or at its connecting terminals. Please refer to the manual for the expansion card for additional details.
- E7X - Expansion card #2 connection error: An error has occurred in an expansion card or at its connecting terminals. Please refer to the manual for the expansion card for additional details.
That should help you out!