L100 Inverter

3–5

Operational Modes

The RUN and PGM LEDs tell just part of the story; Run Mode and Program Modes are independent modes, not opposite modes. In the state diagram to the right, Run alternates with Stop, and Program Mode alternates with Monitor Mode. This is a very important ability, for it shows that a technician can approach a running machine and change some parameters without shutting down the machine.

The occurrence of a fault during operation will cause the inverter to enter the Trip Mode as shown. An event such as an output overload will cause the inverter to exit the Run Mode and turn off its output to the motor. In the Trip Mode, any request to run the motor is ignored. You must clear the error by pressing the Stop/Reset switch. See page 6–5 for error codes and trip history monitoring in detail.

STOP

RESET

RunStop

RUN

FUNC.

Monitor Program

STOP

RESET

RunStop

RUN

STOP

FaultRESET

Trip Fault

The motor control program in the L100 inverter has two PWM sinusoidal switching algorithms. The intent is that you select the best algorithm for the motor characteristics in your application. Both algorithms generate the frequency output in a unique way. Once configured, the algorithm is the basis for other parameter settings as well (see page 3–13). Therefore, choose the best algorithm early in your application design process.

Other Keypad Programming Devices

Inverter PWM Switching Algorithms

Variable freq. control,

 

 

constant torque

Output

 

 

 

Variable freq. control,

DriveParameters

Configuring

reduced torque

 

Several hand-held programming devices are available:

•Digital Operator Panel, DOP–0EA

•Digital Operator Panel and Read/Write Copy Unit (shown at right), DRW-0EA2

•Operator Monitor, OPE-J

The keypads on these operator units are similar to the inverter keypad (refer to the manual that comes with each unit). These can also be panel-mounted to provide a permanent low-cost operator interface, while keeping the inverter secure within the cabinet. The LCD display on the DOP units provides more detailed parameter names and values. The DRW-0EA2 Copy Unit lets you read the parameters from one unit and copy them to another. The Operator Monitor can view (but not edit) parameters. See Appendix B for DOP monitor and function tables.

Contact your local Hitachi distributor for more product information.

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Hitachi L100 instruction manual Operational Modes, Other Keypad Programming Devices
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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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