L100 Inverter

4–19

Frequency Arrival Signal

Frequency Arrival [FA1] and [FA2] signals indicate when the output frequency acceler- ates or decelerates to arrive at a constant frequency. Refer to the figure below. Frequency Arrival [FA1] (left graph) turns on when the output frequency gets within 0.5 Hz below or 1.5 Hz above the target constant frequency. The timing is modified by a small 60 ms delay. Note the active low nature of the signal, due to the open collector output.

Frequency Arrival [FA2] (right graph) uses thresholds for acceleration and deceleration to provide more timing flexibility than [FA1]. Parameter C42 sets the arrival frequency threshold for acceleration, and parameter C43 sets the threshold for deceleration. This signal also is active low and has a 60 ms delay after the frequency thresholds are crossed.

Output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

frequency

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F01

 

Hz

 

 

0.5 Hz

 

F01

 

 

 

 

1.5 Hz

set value

 

 

set value

 

 

 

 

 

 

 

 

 

 

 

 

 

1.5 Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.5 Hz

 

0

 

 

 

 

time

FA1

ON

ON

signal

 

 

 

60 ms

60 ms

Output

 

 

frequency

 

 

Hz

 

 

Thresholds

 

 

C42 accel.

0.5 Hz

1.5 Hz

 

 

C43 decel.

 

 

0

 

 

 

 

time

FA2

ON

 

signal

 

 

Option

Terminal

Function Name

Output

 

Description

Code

Symbol

State

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01

FA1

Frequency arrival

ON

when output to motor is at the set frequency

 

 

type 1 signal

 

 

 

 

 

OFF

when output to motor is off, or in any accelera-

 

 

 

 

 

 

 

tion or deceleration ramp

 

 

 

 

 

02

FA2

Frequency arrival

ON

when output to motor is at or above the set fre-

 

 

type 2 signal

 

quency thresholds for, even if in acceleration or

 

 

 

 

deceleration ramps

 

 

 

 

 

 

 

 

OFF

when output to motor is off, or during accelera-

 

 

 

 

tion or deceleration before the respective thresh-

 

 

 

 

olds are crossed

 

 

 

 

 

 

 

 

 

 

 

 

Valid for outputs:

11, 12, AL0 – AL2

 

Example:

See I/O specs on page 4–5.

Required settings:

(none)

Inverter output

 

 

 

 

Notes:

 

terminal circuit

 

• At the time of acceleration, an output signal at a

 

 

 

 

FA2 FA1

frequency between the set frequency - 0.5 Hz to

 

 

 

 

H

O

OI

L

FM CM2 12 11

+ 1.5 Hz is turned on.

• At the time of deceleration, an output signal at a

 

 

 

 

 

frequency between the set frequency + 0.5 Hz to

+

 

 

 

 

-1.5 Hz is turned on.

 

RY

 

RY

• The delay time of the output signal is 60 ms

–

 

 

 

 

 

 

 

 

 

 

(nominal).

 

 

 

 

 

 

Operations and Monitoring

Page 109 Page 111
Page 110
Image 110
Hitachi L100 instruction manual Frequency Arrival Signal, Off
Page 109 Page 111

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.
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