Axis AX-906 Podręcznik Użytkownika Pobierz pdf (Strona 24)

80

AX

DRIVE USER GUIDE

STEP 3

STEP 4

STEP 5

Selecting a

new Wave

Shape

WAVE SHAPING

FOR

THE AX

DRIVE

STEP 1

STEP 2

STEP 3

STEP 4

STEP 5

STEP 6

Adjust

phase

B offset (pot

#2)

and

phase

A offset (pot #3).

Alternately

adjust

these

two

pots

for

maximum

smoothness

as

well. These

pots

adjust

the

zero

(0)

crossing

point

of

the

current

in

each

phase.

Re-Iocate

the

natural

frequency again.

Increase

and

decrease

the

velocity

in

small

increments

(.1

rps

and

lower)

until

you

have re-Iocated

the

velocity

where

the

natural

frequency

seems

to

be

most

prominent.

Repeat

steps

1

through

4 untU you have maxlm1zed

the

motor's

performance.

All

the

above

adjustments

have affected only

the

total

amount

of

current

being

sent

to

the

motor

and

the

amount

in

each

phase

of

the

motor

with respect to

each

other. This

can

be

very effective

in

most

applications.

but

it

may

be

possible

to

take

your

tuning

procedure one

step

further

by

changing

the

shape

of

the

current wavefonn itself. See Table 4-3.

%

of

3rd

Waveform

Harmonic

#1

-8%

#2

-6%

#3

-4%

#4 -2%

#5

0%

#6

+2%

#7

+4%

#8

+6%

#9

+8%

Table 4-3.

AX

Waveform

Settings

Stop

motion

to

the

motor.

Use

the

WV

(Select Micro-stepping Waveform)

command

to

select a new waveform.

The

new

waveform will

take

effect

immediately.

There

are

9 different waveforms avaUable

and

waveform

#5

is

the

default setting.

Re-Iocate

the

natural

frequency again.

Repeat

the

section titled

Adjusting

the

DrIver

to

the

Motor

Repeat

steps

1

through

3

in

this

section untU

maximum

performance

is

achieved.

Once

you

have

chosen

the

new waveform. you will

need

to

command

the

new

value evety time you power

up

or

the

command

can

be

made

part

of a non-volatile

memoty

sequence

that

is

executed

on

power up.

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