Mitsubishi Electric FR-E800 Instruction Manual page 468

• A deeper notch depth has a greater effect in reducing mechanical resonance but makes the phase delay larger, which may
increase swinging. Adjust the depth by starting from the shallowest value.
Setting 3
Gain (depth) -4 dB (shallow) -8 dB
• If the Pr.1076 setting is too large (the width is too wide), the response level of speed control drops, 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. When Pr.1078 = "0" or Pr.1079 = "0", anti-sway control is performed using
a swinging frequency estimated by the inverter according to the Pr.1077 setting.
 Delay 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.
Frequency command
STF
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.
• When anti-sway control is enabled, regeneration avoidance, shortest acceleration/deceleration, the traverse function, and
deceleration check are disabled regardless of whether the X54 signal is ON or OFF.
• Do not set anti-sway control and droop control together.
Parameters referred to
Pr.10 DC injection brake operation
Pr.78 Reverse rotation prevention
Pr.286 Droop gainpage 561
Pr.292 Automatic acceleration/decelerationpage 276
Pr.592 Traverse function selectionpage 464
Pr.690 Deceleration check timepage 154
Pr.882 Regeneration avoidance operation
2 1
-14 dB
ON
frequencypage 536
selectionpage 300
selectionpage 551
0
-∞ (deep)
Frequency command of anti-sway control
Actual rotation
Zero speed control
Pr.1072
Servo lock
Pr.10 DC injection brake
operation frequency
Time
15. (A) Application Parameters
15.4 Anti-sway control
11
12
13
14
15
16
17
18
19
20
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