(A) Application parameters
PARAMETERS
487
5
GROUP
A
Swinging frequency setting (Pr.1074 to Pr.1079)
• Set a swinging frequency in Pr.1074 Swinging suppression 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 Swinging
suppression width by the gain set in the Pr.1075 Swinging suppression 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, swinging suppression control is performed
using a swinging frequency estimated by the inverter.
Waiting time for brake operation of swinging suppression 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 swinging
suppression control operation.
NOTE
• During swinging suppression 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 swinging suppression control, set
Pr.690 Deceleration check time = "9999 (initial value)" to disable the deceleration check function.
• When swinging suppression control is enabled, regeneration avoidance, shortest acceleration/deceleration, and the traverse
function are disabled.
• Do not set swinging suppression control and droop control together.
Pr.10 DC injection brake operation frequency page 605
Pr.78 Reverse rotation prevention selection page 323
Pr.286 Droop gain page 628
Pr.292 Automatic acceleration/deceleration page 300
Pr.592 Traverse function selection page 484
Pr.690 Deceleration check time page 206
Pr.875 Fault definition page 339
Pr.882 Regeneration avoidance operation selection page 621
Setting
value
3 2 1 0
Depth Shallow Deep
Gain -4dB -8dB -14dB -
STF
ON
Frequency command of swinging suppression control
Zero speed control
Servo lock
Pr.10 DC injection brake
operation frequency
Actual rotation
Pr.1072
Frequency command
Time
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