6–6

Monitoring Trip Events, History, & Conditions

Troubleshooting and Maintenance

Error Codes

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.

Error

Name

Cause(s)

Code

 

 

 

 

 

 

 

 

E01

Over current event while

The inverter output was short-circuited, or the motor

 

at constant speed

shaft is locked or has a heavy load. These conditions

 

 

cause excessive current for the inverter, so the inverter

E02

Over current event during

output is turned off.

 

deceleration

 

 

 

 

E03

Over current event during

 

 

acceleration

 

 

 

 

E04

Over current event while

 

 

motor is stopped

 

 

 

 

E05

Overload protection

When a motor overload is detected by the electronic

 

 

thermal function, the inverter trips and turns off its

 

 

output.

 

 

 

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 thresh-

 

 

old 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.

 

 

 

E11

CPU error

A malfunction in the built-in CPU has occurred, so

E22

 

the inverter trips and turns off its output to the motor.

 

 

 

E12

External trip

A signal on an intelligent input terminal configured 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 cycled

 

 

while the inverter is in Run Mode. 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 upon

 

 

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 100 seconds after powerup and

 

 

the inverter trips and turns off its output.

 

 

 

E21

Inverter thermal trip

When the inverter internal temperature is higher than

 

 

the specified value, the thermal sensor in the inverter

 

 

module detects the higher temperature of the power

 

 

devices and trips, turning the inverter output off.

 

 

 

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Hitachi L100 instruction manual Error Codes, E01
Page 130 Page 132

L100 specifications

The Hitachi L100 series is a versatile range of variable frequency drives (VFDs) designed to enhance performance in various industrial applications. Known for their reliability and efficiency, these drives are widely used in motors for pumps, fans, compressors, and conveyors.

One of the main features of the Hitachi L100 is its impressive control capabilities. The drive supports both scalar and vector control modes, allowing for precise speed and torque management. This flexibility ensures optimal motor performance across different load conditions. Additionally, the L100 series offers an impressive speed range, which can accommodate a wide variety of applications, from low-speed to high-speed requirements.

The L100 is equipped with built-in functionality for energy saving. By utilizing advanced control algorithms and auto-tuning features, the drive optimizes energy consumption, reducing operational costs and contributing to improved overall system efficiency. The energy-saving mode is particularly beneficial in applications where load conditions frequently change.

Another hallmark of the Hitachi L100 is its robust communication capabilities. The drive supports various communication protocols including Modbus and Ethernet, making it easy to integrate into existing control systems. This connectivity allows for real-time monitoring and diagnostics, which aids in predictive maintenance and minimizes downtime.

In terms of user-friendliness, the L100 series includes a clear, intuitive keypad that simplifies programming and operation. The drive also features a wide range of customizable parameters, enabling users to easily tailor the settings to suit specific application requirements. Additionally, the inclusion of a customizable PID controller allows users to refine process control automatically.

Safety is a priority in the design of the Hitachi L100. The drive comes with various built-in safety features such as overvoltage, overload, and short-circuit protection, ensuring reliable operation in challenging environments. Furthermore, it complies with global safety standards, making it suitable for international applications.

Lastly, the L100's compact design ensures easy installation and minimizes the space required in control cabinets. This is especially advantageous in facilities where space is at a premium. Overall, the Hitachi L100 series represents a combination of advanced technology, user-friendly features, and reliable performance, making it a popular choice for industrial automation solutions.
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