
(A) Application parameters
472
Swinging frequency setting (Pr.1074 to Pr.1079)
• Set a swinging frequency in
Pr.1074 Anti-sway control frequency
. The swinging frequency is used as a notch filter
frequency. Lower the response level of speed control in the frequency band with the width set in the
Pr.1076 Anti-sway
control width
by the gain set in the
Pr.1075 Anti-sway control depth
.
• A deeper notch depth has a greater effect in reducing mechanical resonance, but because the phase delay is larger,
swinging may increase. Adjust by starting from the shallowest value.
• If the
Pr.1076
setting is too large (the width is too wide), the response level of speed control will drop, and the system may
become unstable.
• After setting
Pr.1074
= "9999", set the crane rope length in the
Pr.1077
Rope length
, the trolley weight in the
Pr.1078
Trolley weight
, and the weight of an object in the
Pr.1079 Load weight
. Then, anti-sway control is performed using a
swinging frequency estimated by the inverter.
Waiting time for brake operation of anti-sway control (Pr.1072)
• Set the time from when the output frequency becomes the
Pr.10 DC injection brake operation frequency
or less to when
the zero speed control or the servo lock operation starts in the
Pr.1072 DC brake judgment time for anti-sway control
operation
.
NOTE
• During anti-sway control operation, even if the motor rotation is restricted to one direction in the
Pr.78 Reverse rotation
prevention selection
, the motor may rotate in a direction opposite to the setting.
• A protective function (E.OSD) may be activated during vibration control. When using anti-sway control, set
Pr.690
Deceleration check time
= "9999 (initial value)" to disable the deceleration check function.
• When anti-sway control is enabled, regeneration avoidance, shortest acceleration/deceleration, and the traverse function are
disabled.
• Do not set anti-sway control and droop control together.
???????
Parameters referred to
Pr.10 DC injection brake operation frequency
Pr.78 Reverse rotation prevention selection
Pr.286 Droop gain
Pr.292 Automatic acceleration/deceleration
Pr.592 Traverse function selection
Pr.690 Deceleration check time
Pr.875 Fault definition
Pr.882 Regeneration avoidance operation selection
Setting
value
3
2
1
0
Depth
Shallow
Deep
Gain
-4dB
-8dB
-14dB
-
∞
STF
ON
Frequency command of anti-sway control
Zero speed control
Servo lock
Pr.10 DC injection brake
operation frequency
Actual rotation
Pr.1072
Frequency command
Time
Содержание 800 Series
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