Hitachi WL200 Drive Fault Codes:
| Fault Code and Meaning | Cause and Remedy |
|---|---|
| E01 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. These conditions cause excessive current for the inverter, so the inverter output is turned OFF. Setting in dual-voltage motor is wrong. Remedy: Check for short circuits, unlock the motor shaft, or reduce load. Press Stop/Reset key. |
| E02 Over-current event during deceleration | Cause: Excessive current detected during deceleration. (Similar conditions to E01). Remedy: Check deceleration time parameters. Press Stop/Reset key. |
| E03 Over-current event during acceleration | Cause: Excessive current detected during acceleration. (Similar conditions to E01). Remedy: Check acceleration time parameters. Press Stop/Reset key. |
| E04 Over-current event during other conditions | Cause: Excessive current detected during conditions other than constant speed, accel, or decel. Remedy: Check motor and load conditions. Press Stop/Reset key. |
| E05 Overload protection | Cause: When a motor overload is detected by the electronic thermal function, the inverter trips and turns OFF its output. Remedy: Reduce motor load. Press Stop/Reset key. |
| E06 Braking resistor overload protection | Cause: When the BRD operation rate exceeds the setting of “b090”, this protective function shuts off the inverter output and displays the error code. Remedy: Check braking usage and “b090” setting. Press Stop/Reset key. |
| E07 Over-voltage protection | Cause: When the DC bus voltage exceeds a threshold, due to regenerative energy from the motor. Remedy: Check input voltage and deceleration times. Press Stop/Reset key. |
| E08 EEPROM error | Cause: 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. Remedy: Reset operation by RS terminal or STOP/RESET key is not accepted. Reset by cycling power. If error persists, perform initialization. |
| E09 Under-voltage error | Cause: 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. Remedy: Check input power source. Press Stop/Reset key. |
| E10 Current detection error | Cause: If an error occurs in the internal current detection system, the inverter will shut off its output and display the error code. Remedy: Press Stop/Reset key. If error persists, contact support. |
| E11 CPU error | Cause: A malfunction in the built-in CPU has occurred, so the inverter trips and turns OFF its output to the motor. Remedy: Press Stop/Reset key. |
| E12 External trip | Cause: A signal on an intelligent input terminal configured as EXT has occurred. The inverter trips and turns OFF the output to the motor. Remedy: Remove the external trip signal. Press Stop/Reset key. |
| E13 USP (Unattended Start Protection) | Cause: When the Unattended Start Protection (USP) is enabled, an error occurred when power is applied while a Run signal is present. Remedy: Clear the Run signal. Press Stop/Reset key. |
| E14 Ground fault | Cause: The inverter is protected by the detection of ground faults between the inverter output and the motor during powerup tests. Remedy: Reset operation by RS terminal or STOP/RESET key is not accepted. Check motor/cable for ground faults. Reset by cycling power. |
| E15 Input over-voltage | Cause: The inverter tests for input over-voltage after the inverter has been in Stop Mode for 100 seconds. If an over-voltage condition exists, the inverter enters a fault state. Remedy: Check input voltage. After the fault is cleared, the inverter can enter Run Mode again. |
| E19 Inverter thermal detection system error | Cause: When the thermal sensor in the inverter module is not connected. Remedy: Press Stop/Reset key. |
| E21 Inverter thermal trip | Cause: 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. Remedy: Allow inverter to cool. Check cooling fans/ventilation. Press Stop/Reset key. |
| E22 CPU communication error | Cause: When communication between two CPU fails, inverter trips and displays the error code. Remedy: Press Stop/Reset key. |
| E25 Main circuit error | Cause: The inverter will trip if the power supply establishment is not recognized because of a malfunction due to noise or damage to the main circuit element. Remedy: Check power supply and for electrical noise. Press Stop/Reset key. |
| E30 Driver error | Cause: An internal inverter error has occurred at the safety protection circuit between the CPU and main driver unit. Excessive electrical noise may be the cause. Remedy: Reset operation by RS terminal or STOP/RESET key is not accepted. Reset by cycling power. |
| E35 Thermistor | Cause: When a thermistor is connected to terminals [5] and [L] and the inverter has sensed the temperature is too high. Remedy: Check thermistor temperature. Press Stop/Reset key. |
| E36 Braking error | Cause: When “01” has been specified for the Brake Control Enable (b120), the inverter will trip if it cannot receive the braking confirmation signal within the Brake Wait Time. Remedy: Check brake signal wiring and timing. Press Stop/Reset key. |
| E37 Safe Stop | Cause: Safe stop signal is given. Remedy: Check Safe Stop input. Press Stop/Reset key. |
| E38 Low-speed overload protection | Cause: If overload occurs during the motor operation at a very low speed, the inverter will detect the overload and shut off the inverter output. Remedy: Reduce load at low speeds. Press Stop/Reset key. |
| E40 Operator connection | Cause: When the connection between inverter and operator keypad failed. Remedy: Check keypad connection. Press Stop/Reset key. |
| E41 Modbus communication error | Cause: When “trip” is selected (C076=00) as a behavior in case of communication error, inverter trips when timeout happens. Remedy: Check Modbus communication lines. Press Stop/Reset key. |
| E43 EzSQ invalid instruction | Cause: The program stored in inverter memory has been destroyed, or the PRG terminal was turned on without a program downloaded to the inverter. Remedy: Check or reload EzSQ program. Press Stop/Reset key. |
| E44 EzSQ nesting count error | Cause: Subroutines, if-statement, or for-next loop are nested in more than eight layers. Remedy: Correct EzSQ program structure. Press Stop/Reset key. |
| E45 EzSQ instruction error | Cause: Inverter found the command which cannot be executed. Remedy: Correct EzSQ program command. Press Stop/Reset key. |
| E50 to E59 EzSQ user trip (0 to 9) | Cause: When user-defined trip happens, inverter trips and displays the error code. Remedy: Check user program logic. Press Stop/Reset key. |
| E60 to E69 Option error | Cause: The inverter detects errors in the option board mounted in the optional slot. For details, refer to the instruction manual for the mounted option board. Remedy: Refer to Option Board manual. Press Stop/Reset key. |
| H001 Frequency upper limit warning | Cause: Frequency upper limit (A061) > Max. Frequency (A004). Remedy: Correct parameter settings. |
| H002 Frequency lower limit warning | Cause: Frequency lower limit (A062) > Max. Frequency (A004). Remedy: Correct parameter settings. |
| H005 Multi-speed freq warning | Cause: Output Frequency setting (F001) or Multi-speed freq. 0 (A020) > Max. Frequency (A004). Remedy: Correct parameter settings. |
| H015 Frequency setting warning | Cause: Output Frequency setting (F001) or Multi-speed freq. 0 (A020) > Frequency upper limit (A061). Remedy: Correct parameter settings. |
| H025 Frequency lower limit conflict | Cause: Frequency lower limit (A062) > Output Frequency setting (F001) or Multi-speed freq. 0 (A020). Remedy: Correct parameter settings. |
| H031 Start frequency conflict | Cause: Start frequency (A082) > Frequency upper limit (A061). Remedy: Correct parameter settings. |
| Rotating Display Reset | Cause: RS input is ON or STOP/RESET key is pressed. Remedy: Release key or RS input. |
| —- Under-voltage (Indication) | Cause: If input voltage is under the allowed level, inverter shuts off output and waits with this indication. Remedy: Restore input voltage to allowed level. |
| 0000 Waiting to restart | Cause: This indication is displayed after tripping before restarting. Remedy: Wait for restart. |
| Blinking Communication error | Cause: Communication between inverter and digital operator fails. Remedy: Check connection between inverter and operator. |