L100 Inverter

3–15

DC Braking Settings

The DC braking feature provides

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

additional stopping power when compared

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to just a normal deceleration to a stop. DC

+

Running

 

 

Free run

 

 

DC braking

 

 

 

 

braking is particularly useful at the low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

frequency end of the deceleration ramp

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

where there is little or no motor torque

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

time

 

 

 

 

 

 

 

 

 

 

 

available for stopping. If you enable DC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

braking, it turns on during deceleration at a

 

 

 

 

A53

 

 

 

 

A55

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

frequency you can specify. If desirable,

you can specify a delay time during which the motor coasts (free runs) before DC braking helps stop the rotation.

Most importantly, the force and duration of DC braking are adjustable. Be careful to not specify a long braking time that causes motor overheating. If you use DC braking, we recommend using a motor with a built-in thermistor, and wiring it to the inverter’s thermistor input (see page 4–17). Also refer to the motor manufacturer’s specifications for duty-cycle recommendations during DC braking.

 

“A” Function

Run-

Defaults

DOP,DRW,DOP+

 

 

 

 

 

 

 

 

 

 

 

 

 

Func.

Name

Description

time

EU/

Units

Func.

Name

 

DriveParameters

 

Edit

 

 

Code

US

Code

 

 

 

 

 

 

 

 

Configuring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A51

DC braking enable

range is 0.5 to 10 Hz

00

F-20

DCB SW

 

Two options; select codes:

 

 

 

 

 

00... Disable

 

 

 

 

 

 

 

 

 

 

01... Enable

 

 

 

 

 

 

 

 

A52

DC braking frequency

The frequency at which DC

0.5

Hz

F-20

DCB F

 

 

 

 

setting

braking occurs,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A53

DC braking wait time

The delay from the end of Run

0.0

sec.

F-20

DCB

 

 

 

 

 

command to start of DC

 

 

 

 

WAIT

 

 

 

 

 

braking (motor free runs until

 

 

 

 

 

 

 

 

 

 

DC braking begins)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A54

DC braking force

Applied level of DC braking

0

%

F-20

DCB V

 

 

 

 

setting

force, settable from 0 to 100%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A55

DC braking time

Sets the duration for DC

0.0

sec.

F-20

DCB T

 

 

 

 

setting

braking, range is 0.1 to 60.0

 

 

 

 

 

 

 

 

 

 

seconds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 71
Image 71
Hitachi L100 instruction manual DC Braking Settings, Func Name, Edit Code

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.