Vaidnor VDF730 Series, User Manual

Page: 147 / 166

Description of Function Codes VDF730 User Manual
-
146
-
PB
-
05
(
Overcurrent stall gain
)
is used to adjust the overcurrent suppression capacity of the
AC drive
.
The larger the value is
,
the greater the overcurrent suppression capacity will be
.
In
the prerequisite of no overcurrent occurrence
,
set PB
-
05 to a small value
.
When the inertia
is very small
,
set this parameter to a value smaller than 20
.
For small
-
inertia load
,
the value should be small
.
Otherwise
,
the system dynamic response
will be slow
.
For large
-
inertia load
,
the value should be large
.
Otherwise
,
the suppression
result will be poor and overcurrent fault may occur
.
If the overcurrent stall gain is set to 0
,
the overcurrent stall function is disabled
.
Figure 6
-
25 Diagram of the overcurrent stall protection function
Output
current
Output
frequency
(
Hz
)
Set
frequency
Overcurrent stall
protective current
Time
(
t
)
Time
(
t
)
Acceleration
process
Deceleration
process
Constant
-
speed process
Function Code Parameter Name Setting Range Default
PB
-
07 Short
-
circuit to ground upon power
-
on
0
:
Disabled
1
:
Enabled
1
It is used to determine whether to check the motor is short
-
circuited to ground at power
-
on
of the AC drive
.
If this function is enabled
,
the AC drive
'
s UVW will have voltage output a
while after power
-
on
.
Function Code Parameter Name Setting Range Default
PB
-
08 Protection upon off
-
load
0
:
Disabled
1
:
Enabled
0
If this function is enabled
,
the output frequency of the AC drive is 7
%
of the rated motor
frequency after the load the AC drive becomes 0
.
After the load restores
,
the AC drive run at
the set frequency
.
Function Code Parameter Name Setting Range Default
PB
-
09 Power dip ride
-
through function
0
:
Disabled
1
:
Enabled
0
PB
-
10
Power dip ride
-
through frequency
decline rate
0
.
00 Hz
/
s to P0
-
04
/
s 10
.
00 Hz
/
s
PB
-
11
Voltage rise judging time of power
dip ride
-
through
0
.
00
–
100
.
00s 0
.
50s