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
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