3–22

“A” Group: Standard Functions

Frequency-related Functions

Frequency Limits – Upper and lower limits can be imposed on the inverter output frequency. These limits will apply regardless of the source of the speed refer- ence. You can configure the lower frequency limit to be greater than zero as shown in the graph. The upper limit must not exceed the rating of the motor or capability of the machinery. The maximum frequency setting (A004/A204) takes precedence over frequency upper limit (A061/A261).

Output

frequency

A061 Upperlimit

Settable

range

A062 Lowerlimit

0

Frequency command

Configuring

Drive Parameters

 

 

 

 

“A” Function

Run

 

Defaults

 

 

 

 

 

Mode

 

 

 

Func.

Name /

 

–FE(F)

–FU

 

Description

Edit

Units

Code

SRW Display

Lo Hi

(EU)

(USA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A061

Frequency upper limit

Sets a limit on output

✘ ✔

0.0

0.0

Hz

 

setting

 

frequency less than the

 

 

 

 

 

 

 

maximum frequency (A004).

 

 

 

 

 

Lim H

0000.0Hz

 

 

 

 

 

Range is from frequency lower

 

 

 

 

 

 

 

 

 

 

 

 

 

 

limit (A062) to maximum

 

 

 

 

 

 

 

frequency (A004).

 

 

 

 

 

 

 

0.0.. setting is disabled

 

 

 

 

 

 

 

>0.1setting is enabled

 

 

 

 

 

 

 

 

 

 

 

A261

Frequency upper limit

Sets a limit on output

✘ ✔

0.0

0.0

Hz

 

setting, 2nd motor

frequency less than the

 

 

 

 

 

 

 

maximum frequency (A004).

 

 

 

 

 

2Lim H

0000.0Hz

 

 

 

 

 

Range is from frequency lower

 

 

 

 

 

 

 

 

 

 

 

 

 

 

limit (A262) to maximum

 

 

 

 

 

 

 

frequency (A204).

 

 

 

 

 

 

 

0.0.. setting is disabled

 

 

 

 

 

 

 

>0.1setting is enabled

 

 

 

 

 

 

 

 

 

 

 

A062

Frequency lower limit

Sets a limit on output

✘ ✔

0.0

0.0

Hz

 

setting

 

frequency greater than zero.

 

 

 

 

 

 

 

Range is start frequency

 

 

 

 

 

Lim L

0000.0Hz

 

 

 

 

 

(B082) to frequency upper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

limit (A061).

 

 

 

 

 

 

 

0.0.. setting is disabled

 

 

 

 

 

 

 

>0.1setting is enabled

 

 

 

 

 

 

 

 

 

 

 

A262

Frequency lower limit

Sets a limit on output

✘ ✔

0.0

0.0

Hz

 

setting, 2nd motor

frequency greater than zero.

 

 

 

 

 

 

 

Range is start frequency

 

 

 

 

 

2Lim L

0000.0Hz

 

 

 

 

 

(B082) to frequency upper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

limit (A261).

 

 

 

 

 

 

 

0.0.. setting is disabled

 

 

 

 

 

 

 

>0.1setting is enabled