Mitsubishi Electric FR-D720S SC EC Instruction Manual page 169

Parameter
Parameter
Func-
Name
tion
245 Rated slip
Slip compensation
246
time constant
Constant-output region
247 slip compensation
selection
Earth (ground) fault
249
detection at start
250 Stop selection
Tab. 6-1: Parameter overview (19)
FR-D700 SC EC
Incre- Initial Setting
ments value range
0–50%
0.01% 9999
9999
0.01s 0.5s 0.01–10s
0
1 9999
9999
0
1 0
1
0–100s
1000–1100s
0.1s 9999
8888
9999
Description
Used to set the rated motor slip.
No slip compensation
Used to set the response time of
slip compensation. When the
value is made smaller, response
will be faster. However, as load
inertia is greater, a regenerative
over voltage (E.OV ) error is
more liable to occur.
Slip compensation is not made in
the constant output range (fre-
quency range above the frequency
set in Pr. 3)
Slip compensation is made in the
constant output range.
Without ground fault detection
With ground fault detection
The motor is
STF signal:
coasted to a
Forward rotation
stop when the
start
preset time
elapses after STR signal:
the start sig-
Reverse rotation
nal is turned
start
off.
The motor is
coasted to a STF signal:
stop (Pr. 250 Start signal
− 1000)s after
STR signal:
the start sig- Forward/reverse
nal is turned signal
off.
STF signal:
Start signal
STR signal:
Forward/reverse
When the
signal
start signal is
turned off, the
STF signal:
motor decel-
Forward rotation
erates to stop.
start
STR signal:
Reverse rotation
start
Parameter overview
All
Para- Para-
Para-
meter meter
meter
copy clear
clear
Refer
to
page
✔: enabled
—: disabled
✔ ✔ ✔
✔ ✔ ✔
6-32
✔ ✔ ✔
✔ ✔ ✔
6-142
✔ ✔ ✔
6-86
6 - 19