Vaidnor VDF650 Series, Руководство пользователя, Страница: 67 / 296

Operation
,
Display and Application Examples VDF650 User Manual
-
66
-
4
.
8
.
9 Setting the Motor Rotating Direction
After the AC drive restores the default settings
,
press
RUN
to drive the motor to rotate
.
In
this case
,
the rotating direction is regarded as the forward rotation
.
If the rotating direction is
reverse to the direction required by the equipment
,
power off the AC drive and exchange any
two of the output UVW cables
(
wait until the main capacitor of the AC drive is completely
discharged
).
In some applications where both forward rotation and reverse rotation are required
,
enable
the reverse control
(
P8
-
13
=
0
,
default value
)
and meanwhile reverse the rotating direction
by setting P0
-
09 to 1
.
Then press
RUN
to make the motor rotate in the reverse direction
,
as shown in the following fgure
.
Figure 4
-
26 Reversing the motor rotating direction
Command source
(
operation panel control
)
Forward rotation
command
(
terminal
,
communication
)
Reverse rotation
command
Fs
>
0
Fs
≤
0
Fs ≤ 0
Fs
>
0
P0
-
09
0
0
1
1
0
1
P8
-
13
(
terminal
,
communication
)
Set frequency
Rotating
direction setting
Reverse control
enabled
Forward
rotation
Reverse
rotation
Rotating
at 0
.
0 Hz
If the command source is terminal control and reverse rotation is required
,
use the default
value 0 of P8
-
13 to enable reverse control
.
According to the preceding figure
,
when the running frequency of the AC drive is set by
means of communication
(
P0
-
03
=
9
)
and reverse control is enabled
(
P8
-
13
=
0
),
the AC
drive instructs the reverse direction if the set frequency Fs is a negative value
.
If the give running command is reverse rotation or the set frequency is a negative value
,
but
reverse control is disabled
(
P8
-
13
=
1
),
the AC drive will run at 0 Hz and has no output
.
In some applications where reverse rotation is prohibited
,
do not change the rotating
direction by modifying the function codes because the function codes will be restored once
the AC drive restores the default settings
.
4
.
8
.
10 Setting the Fixed Length Control Mode
The VDF650 has the fxed length control function
.
The length pulses are sampled by the DI
allocated with function 27
(
Length count input
).
The
"
Actual length
" (
PB
-
06
)
is obtained by
dividing the number of pulses sampled by the value of PB
-
07
(
Number of pulses per meter
).
If the actual length is larger than the
"
Set length
" (
PB
-
05
),
the multifunctional DO terminal
becomes ON
.
In the process of fxed length control
,
the length can be reset by means of the DI terminal
allocated with function 28
(
Length reset
).
The related setting is shown in the following fgure
.