E6581158
F-52
6
,
Precautions on auto-tuning
(1) Conduct auto-tuning only after the motor has been connected and operation completely stopped.
If auto-tuning is conducted immediately after operation stops, the presence of a residual voltage
may result in abnormal tuning.
(2) Voltage is applied to the motor during tuning even though it barely rotates. During tuning,
“
CVP
” is displayed on the operation panel.
(3) Tuning is usually completed within three seconds. If it is aborted, the motor will trip with the dis-
play of
GVP
and no constants will be set for that motor.
(4) High-speed motors, high-slip motors or other special motors cannot be auto-tuned. For these
motors, perform manual tuning using Selection 3 described below.
(5) Provide cranes and hoists with sufficient circuit protection such as mechanical braking. Without
sufficient circuit protection, the resulting insufficient motor torque during tuning could create a risk
of machine stalling/falling.
(6) If auto-tuning is impossible or an "
GVP
" auto-tuning error is displayed, perform manual tuning
with Selection 3.
(7) If the inverter is tripped during auto-tuning because of an output phase failure (
GRJQ
), check if
the inverter is connected to the correctly. A check for output phase failures is made during auto-
tuning, regardless of the setting of the output phase failure detection mode selection parameter
(
H
).
[Selection 3: Setting vector control and manual tuning independently]
If an "
GVP
" tuning error is displayed during auto-tuning or when vector control characteristics are to be
improved, independent motor constants can be set.
Title
Function
Adjustment range
Default setting
H
Auto-tuning
0: Auto-tuning disabled
(use of internal parameters)
1: Application of individual settings of
H
(after execution: 0)
2: Auto-tuning enabled (after execution: 0)
0
H
Slip frequency gain
0-150 (%
）
50
H
Motor constant #1 (primary
resistance)
0.0-30.0 (%)
H
Motor rated current
0.1-100.0 (A)
H
Motor no-load current
10-90 (%)
Depends on
the capacity
(See Section
11, K-14)
G
Motor rated rotational speed
100-32000 (min
-1
)
1410 (WP)
1710 (WN, AN)
H
Speed control response
coefficient
1-150
40
H
Speed control stability
coefficient
1-100
20
H
Exciting strengthening coeffi-
cient
100-130
100
H
Stall cooperation gain at field
weakening zone 1
10-250
100
H
Stall cooperation gain at field
weakening zone 2
50-150
100
