L100 Inverter

4–23

The alarm output terminals are connected as shown below (left) by default, or after initialization. The contact logic can be inverted as shown (below right) by using the parameter setting C33. The relay contacts normally open (N.O.) and normally closed (N.O.) convention uses “normal” to mean the inverter has power and is in Run or Stop Mode. The relay contacts switch to the opposite position when it is in Trip Mode or when input power is Off.

N.C. contacts (after initialization)

N.O. contact (inverted by C33 setting)

 

 

 

 

 

 

 

 

During normal running

When an alarm occurs

During normal running

When an alarm occurs

 

or power is turned off

or power is turned off

 

AL0 AL1 AL2

AL0 AL1 AL2

AL0 AL1 AL2

AL0 AL1 AL2

Contact

Power

Run

AL0-

AL0-

 

Contact

Power

Run

AL0-

AL0-

State

AL1

AL2

 

State

AL1

AL2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N.C.

ON

Normal

Closed

Open

 

N.O.

ON

Normal

Open

Closed

(after

 

 

 

 

 

(set

 

 

 

 

ON

Trip

Open

Closed

ON

Trip

Closed

Open

initialize,

 

C33=00)

 

 

 

 

 

 

 

 

 

C33=01)

OFF

Open

Closed

 

 

OFF

Open

Closed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operations and Monitoring

Page 114
Image 114
Hitachi L100 instruction manual When an alarm occurs

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.