YASKAWA VS MINI J7 Specifications download pdf (Page 18)

When the frequency reference is output by analog input

of control circuit terminals FR and FC, the relation

between analog voltage and frequency reference can be

set.

Frequency reference gain (n41)

The analog input voltage

value for the maximum

output frequency (n09) can

be set in units of 1%.

Factory setting : 100%

Frequency reference bias (n42)

The frequency reference

provided when analog input

is 0V (4mA or 0mA) can be

set in units of 1%.

[n09 : Maximum output frequency = 100%]

Factory setting : 0%

Gain : Outputs % (ratio to max. output frequency n09)

at 10V.

n41 = %

Bias : Outputs % (ratio to max. output frequency n09)

at 0V.

n42 = %

FREQUENCY REF.

(4mA)

10VGAIN

(20mA)

MAX. OUTPUT

FREQUENCY

GAIN

100



MAX. OUTPUT

FREQUENCY

BIAS

100



( ) indicates when current

reference input is selected.

Typical Settings

• At 0 to 5V input

• To operate the inverter

with frequency reference

of 50% to 100% at 0 to

10V input

Gain:

Bias:

Constant n41=100

Constant n42=50

10V

MAX. OUTPUT

FREQUENCY

(100%)

50%

Gain:

Bias:

Constant n41=200

Constant n42=0

10V5V

MAX. OUTPUT

FREQUENCY

(100%)

50%

By inputting a jog command and then a forward

(reverse) run command, operation is enabled at the jog

frequency set in n29. When multi-step speed references

1, 2, or 3 are input simultaneously with the jog

command, the jog command has priority.

Name Constant no.

Jog frequency reference

Jog command

n29

n36 to n39

Setting

Factory setting : 6.0Hz

Set to “10” for any constant.

Frequency reference upper

limit (n30)

Sets the upper limit of the

frequency reference in units of

1%.

[n09 : Maximum output frequency

= 100%]

Factory setting : 100%

Frequency reference lower

limit (n31)

Sets the lower limit of the frequency reference in units of 1%.

[n09 : Maximum output frequency = 100%]

When operating at frequency reference 0, operation continues

at the frequency reference lower limit.

However, when frequency reference lower limit is set to less

than the minimum output frequency (n14), operation is

disabled.

Factory setting : 0%

INTERNAL FREQUENCY

REF.

FREQUENCY

UPPER LIMIT

(n033)

FREQUENCY

LOWER LIMIT

(n034)

SET FREQUENCY

REF.

By setting input terminal function selection (one of n36

to n39) to “11” (accel/decel time select), accel/decel time

is selected by turning ON/OFF the accel/decel time

select (one terminal of S2 to S5).

At OFF : n16 (accel time 1)

n17 (decel time 1)

At ON : n18 (accel time 2)

n19 (decel time 2)

OUTPUT

FREQUENCY

ACCEL

TIME 1

(n16)

DECEL TIME 1

(n17)

DECEL TIME 2

(n18)

DECEL TIME 2*

(n19)

DECEL TIME 1*

(n17)

TIME

FWD (REV) RUN COMMAND

MULTI-STEP SPEED REF.

ACCEL/DECEL

TIME SELECTION

(TERMINAL S2 TO S5)

When “deceleration to a stop” is selected (n04=0).

No.

n16

n17

n18

n19

Unit*

0.1s

Setting range

0.0 to 999s

Initial setting

10.0s

Name

Accel time 1

Decel time 1

Accel time 2

Decel time 2

* Setting unit is 1s when 100s or more.

• Accel time

Set the time needed for output frequency to reach 100%

from 0%.

• Decel time

Set the time needed for output frequency to reach 0%

from 100%.

Adjusting frequency setting signal

Frequency reference gain

Frequency reference bias

N42

N41

Operating at low speed

Jog frequency reference

Jog command selection to

N39N36

N29

FREF

Adjusting frequency upper and lower limits

Frequency reference upper limit

Frequency reference lower limit

N31

N30

Using two accel/decel times

Accel time 1, 2

Decel time 1, 2

Input terminal function selection to

N39N36

N19N17

N18N16

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 43 44

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YASKAWA VS MINI J7 Specifications Page 18

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