L100 Inverter

1–11

Velocity Profiles

 

 

 

 

 

The L100 inverter is capable of sophisticated

Speed

 

 

 

Getting

speed control. A graphical representation of

Fixed speed

 

 

 

 

 

 

that capability will help you understand and

 

 

 

 

 

program the associated parameters. This

 

Accel

Decel

 

Started

example, the acceleration is a ramp to a set

 

 

 

 

manual makes use of the velocity profile

 

 

 

 

 

graph used in industry (shown at right). In the

 

 

 

Time

 

 

 

 

 

 

speed, and the deceleration is a decline to a

 

Velocity Profile

 

 

 

 

 

 

 

stop.

 

 

 

 

 

The L100 inverter can store up to 16 preset

Speed

speeds. And, it can apply separate acceleration

 

 

 

Speed 2

and deceleration transitions from any preset to

 

 

 

 

Speed 1

 

 

any other preset speed. For example, a motor

 

 

 

 

 

 

 

with a small load could use high accel/decel

 

 

 

 

 

 

values, but a heavy load will generally use

 

 

 

 

 

 

 

 

 

 

 

Time

slower speed changes. A multi-speed profile

 

 

 

 

 

 

Multi-speed Profile

(shown at right) uses two or more preset

 

 

 

 

 

 

 

speeds in one motion of the load. There is no limit to the number of speed changes for one motion; that is up to the control input to the inverter. Also note that speed can be infinitely variable across the speed range. You can use the potentiometer control on the keypad for manual control. The drive also accepts analog 0-10V signals and 4-20 mA control signals as well.

The inverter can drive the motor in either direction. Separate FWD and REV commands select the direction of rotation. The motion profile example shows a forward motion followed by a reverse motion of shorter duration. The speed presets and analog signals control the magnitude of the speed, while the FWD and REV commands determine the direction before the motion starts.

Speed

Forward move

 

 

Time

 

Reverse move

Bi-directional Profile

NOTE: The L100 can move loads in both directions. However, it is not designed for use in servo-type applications that use a bipolar velocity signal which determines direction.

Page 28
Image 28
Hitachi Velocity Profiles, L100 inverter is capable of sophisticated Speed, Shown at right uses two or more preset

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.