3–9

L100 Inverter

“A” Group: Standard Functions

Basic Parameter Settings

These settings affect the most fundamental behavior of the inverter—the outputs to the motor. The frequency of the inverter’s AC output determines the motor speed. You may select from three different sources for the reference speed. During application development you may prefer using the potentiometer, but you may switch to an external source (control terminal setting) in the finished application, for example.

The base frequency and maximum frequency settings interact according to the graph below (left). The inverter output operation follows the constant V/f curve until it reaches the full-scale output voltage. This initial straight line is the constant-torque part of the operating characteristic. The horizontal line over to the maximum frequency serves to let the motor run faster, but at a reduced torque. If you want the motor to output constant torque over its entire operating range (limited to the motor nameplate voltage and frequency rating), then set the base frequency and maximum frequency equal as shown (below right).

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A 03

 

 

 

 

 

 

 

 

 

A 03

 

A 04

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A 04

100%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Constant torque

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

f

0

 

 

 

 

 

 

 

 

f

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Base

Maximum

 

 

 

Base frequency =

 

 

 

 

 

Frequency Frequency

 

 

 

maximum frequency

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

“A” Function

 

 

Run

 

Defaults

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Func.

Name /

 

 

 

 

Description

 

 

Mode

–FE

–FU

 

 

–FR

Units

 

 

 

 

 

 

Edit

 

 

Code

SRW Display

 

 

 

(CE)

(UL)

(Jpn)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A_01

Frequency source

 

Three options; select codes:

 

 

✘

01

01

00

 

—

 

setting

 

 

 

 

00 ...Keypad potentiometer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01 ...Control terminal

 

 

 

 

 

 

 

 

 

 

 

F-SET-SELECT TRM

 

 

 

 

 

 

 

 

 

 

 

 

 

02 ...Function F01 setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A_02

Run command source

 

Two options; select codes:

 

 

✘

01

01

02

 

—

 

setting

 

 

 

 

01 ...Control terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

02 ...Run key on keypad, or

 

 

 

 

 

 

 

 

 

 

 

F/R SELECT TRM

 

 

 

 

 

 

 

 

 

 

 

 

 

digital operator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A_03

Base frequency setting

 

Settable from 50 Hz to the

 

 

✘

50.0

60.0

60.0

 

Hz

 

 

 

 

 

 

 

maximum frequency

 

 

 

 

 

 

 

 

 

 

 

F-BASE

060Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A_04

Maximum frequency

 

Settable from the base

 

 

✘

50.0

60.0

60.0

 

Hz

 

setting

 

 

 

 

frequency up to 360 Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F-MAX

060Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameters Drive

Configuring