Hitachi Understanding L300P Error Codes and Protective Functions in Inverters
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PROTECTIVE FUNCTIONS

 

 

Display on digital

Display on remote

Name

Cause(s)

operator/copy unit

operator

ERR1****

 

 

 

 

The inverter output was short-circuited, or the motor

While at constant speed

OC.Drive

Over-current

During deceleration

OC.Drive

shaft is locked or has a heavy load.

protection

These conditions cause excessive current for the

During acceleration

OC.Accel

 

inverter, so the inverter output is turned off.

Others

Over.C

 

 

Overload

When a motor overload is detected by the electronic thermal function, the inverter

Over.L

protection(*1)

trips and turns off its output.

 

 

 

Braking resistor

When the regenerative braking resistor exceeds the usage time allowance or an over-voltage caused by the

OL.BRD

overload protection

stop of the BRD function is detected, the inverter trips and turns off its output.

 

 

 

Over-voltage

When the DC bus voltage exceeds a threshold, due to regenerative energy from

Over.V

protection

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

 

 

 

EEPROM error(*2)

When the built-in EEPROM memory has problems due to noise or excessive temper-

EEPROM

ature, the inverter trips and turns off its output.

 

Under-voltage

A decrease of internal DC bus voltage below a threshold results in a control circuit fault. This condition can

Under.V

error

also generate excessive motor heat or cause low torque. The inverter trips and turns off its output.

 

CT(Current

If a strong source of electrical interference is close to the inverter or abnormal operations occur in the built-

CT

transformer) error

in CT(Current transformer), the inverter trips and turns off its output.

 

 

 

CPU error

When a malfunction in the built-in CPU has occurred, the inverter trips and turns off

CPU1

its output.

 

External trip

When a signal to an intelligent input terminal configured as EXT has occurred, the

EXTERNAL

inverter trips and turns off its output.

 

USP error

An error occurs when power is cycled while the inverter is in RUN mode if the Unattended Start Protection

USP

(USP) is enabled. The inverter trips and does not go into RUN mode until the error is cleared.

 

 

Ground fault

The inverter is protected by the detection of ground faults between the inverter output

GND.Flt.

and the motor during power-up tests. This feature protects the inverter only.

Input over-voltage

When the input voltage is higher than the specified value, it is detected 60 seconds

OV.SRC

protection

after power-up and the inverter trips and turns of its output.

 

Instantaneous

When power is cut for more than 15msec., the inverter trips and turns off its output. If power failure contin-

Inst.P-F

power failure

ues, the error will be cleared. The inverter restarts if it is in RUN mode when power is cycled.

 

Inverter thermal

When the inverter internal temperature is higher than the specified value, the thermal sensor in the inverter

OH FIN

trip

module detects the higher temperature of the power devices and trips, turning off the inverter output.

 

Gate array error

Communication error has occured between CPU and gate array.

GA

Missing phase

One of three lines of 3-phase power supply is missing.

 

PH.Fail

IGBT error

When instantaneous over-current has occurred, the inverter trips and turns off its

IGBT

output to protect main circuit element.

 

Thermistor error

When the thermistor inside the motor detects temperature higher than the specified

TH

value, the inverter trips and turns off its output.

 

Expansion card 1

 

–

OP1 0-9

connection error

 

An error has been detected in an expantion card or at its connecting terminals.

 

Expansion card 2

 

 

–

OP2 0-9

connection error

 

 

 

 

Out of operation

Due to insufficient voltage, the inverter has turned off its output and been trying to

UV.WAIT

due to under-voltage

restart. If it fails to restart, it goes into the under-voltage error.

 

(*1)You can clear the error by pressing the Start / Reset key 10 seconds after the trip occurred.

(*2)If an EEPROM error occurs, be sure to confirm the parameter data values are still correct.

How to access the details about the present fault

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output frequency

Motor current

 

Voltage between

Cumulative inverter

Cumulative power-on

Error code

Status at trip point

at trip point

at trip point

 

P(+) and N(–) at trip point

operation (run) time

time at trip point

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

at trip point

 

 

 

19

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Contents Page +Power Supply 12C 12A 11C 11A AL0 AL1 AL2Damper No contact XGlobal ISOEase EASY-REMOVABLE Cooling FAN DC BUS Capacitor Control Circuit TerminalsPower Source Series NameL300P-015LFU2 L300P-022LFU2Standard Specifications Rated capacity 400V KVA 480V 57.5 510 1115 1520%25 10C External dynamic braking unitPhase 3-wire 380-480V ± 10%, 50/60Hz 116 149 176 215 253 Phase Wire370HFU2 450HFU2 550HFU2 750HFU2 900HFU2 1100HFU2 IP00 3750Dimensions L300P-015-055LFU2015-055HFU2 015-055HFE2L300P-185-300LFU2, 185-300HFE2, 185-300HFU2 L300P-370LFU2370HFU2 Unitmm inchL300P-750LFU2 L300P-450-550LFU2 450-750HFE2450-750HFU2 Exhaust Wall Air intake L300P-1320HFE2, HFU262.52.46 793.11 48018.91 710 740 380 270 Press to stop the drive or reset an alarm Shows drives statusPress to run the motor Indicates the unit associated with the parameter displayGroup Standard Functions Function ListMonitoring Functions and Main Profile Parameters A063 Jump frequency 1 setting 00-99.99/100.0-400.0Hz A064 Jump frequency width 1 setting 00-10.00HzA065 Jump frequency 2 setting 00-99.99/100.0-400.0Hz A243Group Fine Tuning Functions Group Intelligent Terminal Functions Group Motor Constants FunctionsGroup Expansion Card Functions Group User-selectable Menu FunctionsTerminals Terminal DescriptionTerminal Arrangement Screw Diameter and Terminal WidthTerminal Description Default setting CE/UL Protective Functions Connecting Diagram Terminal Name FW, 1, 2, 3, 4O2, OI, AM, AMI Common P24Intelligent Input terminals For 18.5kW25HP and overHitachi EH-150 series PLC L300P Output Module EH-YT16 Connecting to PLCHitachi EH-150 series PLC L300P Output Module Power Supply Fuse Inverter MotorCables for OPE-S/SR/SRE and SRW-0EX AccessoriesICS-1 Data Bit Configuration Standard SpecificationsConnector specifications Input data is divided into upper 8-bit and lower 8-bitCable connection SpecificationsSpecifications Dimensional drawings Unit mm For Compact Panel L300P-900- 1100HFU2/E2L300P-1320HFU2/E2 Panel cutoutTorque Characteristics Derating DataFor Correct Operation Application to MotorsHigh-frequency Noise and Leakage Current Lifetime of Primary Parts

L300P specifications

The Hitachi L300P is a versatile and highly efficient variable frequency drive (VFD) known for its robust performance and reliability across various industrial applications. This drive is part of Hitachi's renowned L-series, designed to provide precise motor control and energy savings, making it a popular choice among engineers and system integrators.

One of the standout features of the Hitachi L300P is its advanced vector control technology. This technology enables the drive to deliver superior torque control and operational efficiency, which is crucial for applications requiring high performance and accuracy. The L300P's sensorless vector control capability allows it to maintain optimal performance even in varying load conditions, ensuring that motors run smoothly and efficiently.

The L300P also boasts a wide input voltage range, accommodating different voltage requirements from 200V to 600V. This flexibility makes it suitable for diverse global applications without the need for voltage converters. Additionally, the drive supports a broad range of output frequencies, allowing for seamless integration with various motor types.

Another significant aspect of the L300P is its built-in PLC functionality. This feature enables users to implement simple control tasks directly within the drive, reducing the need for external controllers and minimizing installation space and complexity. With programmable logic capabilities, users can optimize their processes and add custom functionalities to meet specific operational requirements.

The L300P is equipped with comprehensive protection features, including overcurrent protection, overvoltage protection, and motor stall prevention. These safety mechanisms ensure that the drive and the connected motors remain protected under adverse operating conditions, enhancing system reliability and reducing maintenance costs.

In terms of user interface, the L300P includes an intuitive keypad that allows for easy parameter setting and monitoring. The display provides real-time information about operational status and performance metrics, enabling users to make informed decisions quickly.

Energy efficiency is another key characteristic of the L300P. By utilizing advanced control algorithms and motor management techniques, the drive significantly reduces energy consumption, making it an environmentally friendly choice for industries looking to lower their carbon footprint.

Overall, the Hitachi L300P combines advanced technology, robust performance, and user-friendly features, making it a pivotal component in modern industrial automation and control systems. With its flexibility and efficiency, it stands out as a reliable solution for a wide range of applications, from HVAC systems to conveyor control and beyond.
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