L100 Inverter

3–21

“B” Group: Fine Tuning Functions

The “B” group of functions and parameters adjust some of the more subtle but useful aspects of motor control and system configuration.

Restart Mode

The restart mode determines how the inverter will resume operation after a fault causes a trip event. The four options provide advantages for various situations. The inverter can restart several times for particular trip events:

•Over-current trip, restart up to 3 times

•Over-voltage trip, restart up to 3 times

•Under-voltage trip, restart up to 16 times

Input

 

power

failure

 

Motor

 

speed

 

 

B03

0

f

 

 

B02

When the inverter reaches the maximum number of restarts (3 or 16), you must power- cycle the inverter to reset its operation.

Other parameters specify the allowable under-voltage level and the delay time before restarting. The proper settings depends on the typical fault conditions for your applica- tion, the necessity of restarting the process in unattended situations, and whether restart- ing is always safe.

 

“B” Function

Run-

Defaults

DOP,DRW,DOP+

 

 

 

 

 

 

 

Func.

Name

Description

time

EU/

Units

Func.

Name

Edit

Code

US

Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B01

Selection of restart

Select inverter restart method,

✘

00

—

F-22

IPS

 

mode

four option codes:

 

 

 

 

POWR

 

 

00... Alarm output after trip,

 

 

 

 

 

 

 

no automatic restart

 

 

 

 

 

 

 

01... Restart at 0Hz

 

 

 

 

 

 

 

02... Resume operation after

 

 

 

 

 

 

 

frequency matching

 

 

 

 

 

 

 

03... Resume previous freq.

 

 

 

 

 

 

 

after freq. matching, then

 

 

 

 

 

 

 

decelerate to stop and display

 

 

 

 

 

 

 

trip info.

 

 

 

 

 

 

 

 

 

 

 

 

 

B02

Allowable under-

The amount of time a power

✘

1.0

sec.

F-22

IPS

 

voltage power failure

input under-voltage can occur

 

 

 

 

UVTIME

 

time

without tripping the power

 

 

 

 

 

 

 

failure alarm. Range is 0.3 to

 

 

 

 

 

 

 

25 sec. If under-voltage exists

 

 

 

 

 

 

 

longer than this time, the

 

 

 

 

 

 

 

inverter trips, even if the restart

 

 

 

 

 

 

 

mode is selected.

 

 

 

 

 

 

 

 

 

 

 

 

 

B03

Time delay enforced

Time delay after under-voltage

✘

1.0

sec.

F-22

IPS WAIT

 

before motor restart

condition goes away, before the

 

 

 

 

 

 

 

inverter runs motor again.

 

 

 

 

 

 

 

Range is 0.3 to 100 seconds.

 

 

 

 

 

 

 

 

 

 

 

 

 

Drive Parameters

Configuring

 

 

Page 76 Page 78
Page 77
Image 77
Hitachi L100 instruction manual Group Fine Tuning Functions, Restart Mode
Page 76 Page 78

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.
Top Page Image Contents