Viii

Index to Warnings and Cautions in This Manual

Warnings for Operations and Monitoring

WARNING: Be sure to turn on the input power supply after closing	.......... 4–3
the front case. While being energized, be sure not to open the front
case. Otherwise, there is the danger of electric shock.
WARNING: Be sure not to operate the switches with wet hands.	.......... 4–3
Otherwise, there is the danger of electric shock.
WARNING: While the inverter is energized, be sure not to touch	.......... 4–3
the inverter terminals even when the motor is stopped. Otherwise,
there is the danger of electric shock.
WARNING: If the Retry Mode is selected, the motor may suddenly	.......... 4–3
restart during the trip stop. Do not approach the machine (be sure to
design the machine so that safety for personnel is secure even if it
restarts.) Otherwise, it may cause injury to personnel.
WARNING: If the power supply is cut off for a short period of time,	.......... 4–3
the inverter may restart operation after the power supply recovers if
the command to operate is active. If a restart may pose danger to
personnel, so be sure to use a lock-out circuit so that it will not
restart after power recovery. Otherwise, it may cause injury to
personnel.
WARNING: The Stop Key is effective only when the Stop function	.......... 4–3
is enabled. Be sure to enable the Key separately from the
emergency stop. Otherwise, it may cause injury to personnel.
WARNING: After the operation command is given, if the alarm	.......... 4–3
reset is conducted, it will restart suddenly. Be sure to set the alarm
reset after verifying the operation command is off. Otherwise, it
may cause injury to personnel.
WARNING: Be sure not to touch the inside of the energized	.......... 4–3
inverter or to put any conductive object into it. Otherwise, there is a
danger of electric shock and/or fire.
WARNING: When the power is turned on when the running	.......... 4–3
command is already active, the motor will suddenly start rotation
and is dangerous. Before turning the power on, confirm that the
running command is not enabled.
WARNING: When the Stop key function is disabled, pressing the	.......... 4–3
Stop key does not cancel the stop and trip.
WARNING: Be sure to provide a separate, hard-wired emergency	.......... 4–3
stop switch. When the operation command source is a digital opera-
tor, this selection is ineffective.
WARNING: If the power is turned on and the Run command is	.......... 4–6
already active, the motor starts rotation and is dangerous! Before
turning power on, confirm that the Run command is not active.

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.

Hitachi L100 instruction manual Viii

Models: L100

viii

Index to Warnings and Cautions in This Manual

L100 specifications