Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации, Страница: 174 / 512

Parameter overview Parameter
6 - 24
Func-
tion
Parameter
Name
Incre-
ments
Initial
value
Setting
range
Description
Para-
meter
copy
Para-
meter
clear
All
Para-
meter
clear
Refer
to
page
Rel
a
ted
parameter
s
✔
: enabled
—: disabled
Regeneration avoidance function
882
Regeneration
avoidance operation
selection
1 0
0
Regeneration avoidance function
invalid
✔ ✔ ✔
6-267
1
Regeneration avoidance function
is always valid
2
Regeneration avoidance function
is valid only during a constant
speed operation
883
Regeneration
avoidance operation
level
0.1V
400V/
780V *
300–800V
Set the bus voltage level at which
regeneration avoidance operates.
When the bus voltage level is set
to low, overvoltage error will be
less apt to occur. However, the
actual deceleration time increases.
The set value must be higher
than the "power supply
voltage
×
.
* The initial value differs according
to the voltage class:
200V/400V
✔ ✔ ✔
885
Regeneration avoid-
ance compensation
frequency limit value
0.01Hz 6Hz
0–10Hz
Set the limit value of frequency
which rises at activation of regen-
eration avoidance function.
✔ ✔ ✔
9999 Frequency limit invalid
886
Regeneration avoid-
ance voltage gain
0.1% 100% 0–200%
Adjusts responsiveness at activa-
tion of regeneration avoidance. A
larger setting of Pr. 886 will
improve responsiveness to the
bus voltage change. However, the
output frequency could become
unstable.
When the load inertia of the motor
is large, decrease the Pr. 886 set-
ting.When vibration is not sup-
pressed by decreasing the Pr. 886
setting, set a smaller value in
Pr. 665.
✔ ✔ ✔
665
Regeneration avoid-
ance frequency gain
0.1% 100% 0–200%
Tab. 6-1: Parameter overview (24)
2