Mitsubishi Electric FR-F740 EC Instruction Manual page 185

Parameter
Parameter
Func-
Name
tion
Regeneration
882 avoidance operation
selection
Regeneration
883 avoidance operation
level
Regeneration
avoidance at
884
deceleration detection
sensitivity
Regeneration
avoidance
885
compensation fre-
quency limit value
Regeneration avoid-
886
ance voltage gain
Regeneration avoidance
665
frequency gain
888 Free parameter 1
889 Free parameter 2
Tab. 6-1: Parameter overview (35)
FR-F700 EC
Incre- Initial Setting
ments Value Range
0
1 0
1
760V/
0.1V 300–800V
785V DC
1 0 0–5
0–30Hz
0.01Hz 6Hz
9999
0.1% 100% 0–200%
0.1% 100% 0–200%
1 9999 0–9999
1 9999 0–9999
Description
Regeneration avoidance function
invalid
Regeneration avoidance function
valid
Set the bus voltage level at which
regeneration avoidance operates.
When the bus voltage level is set
to low, overvalued error will be
less apt to occur. However, the
actual deceleration time increases.
Set sensitivity to detect the bus
voltage change
1 (low) → 5 (high)
Set the limit value of frequency
which rises at activation of regen-
eration avoidance function.
Frequency limit invalid
Adjust 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 vibration is not suppressed
by decreasing the Pr. 886 setting,
set a smaller value in Pr. 665.
Parameters you can use for your
own purposes
Used for maintenance, manage-
ment, etc. by setting a unique
number to each inverter when
multiple inverters are used.
Parameter overview
All
Para- Para-
para-
meter meter
meter
copy clear
Refer
clear
to
page
✔: enabled
—: disabled
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
6-386
✔ ✔ ✔
✔ ✔ ✔
✔
— —
6-399
✔
— —
6 - 35