Yaskawa CIMR-UU4A0240A [289/644] L4 speed detection

Yaskawa CIMR-UU4A0414F [289/644] L4 speed detection
Setting 0: Disabled
The level set in L3-06 is used throughout the entire speed range.
Setting 1: Enabled
The Stall Prevention level during run is reduced in the constant power range. The lower limit will be 40% of L3-06.
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L3-27: Stall Prevention Detection Time
Sets a delay time from when the Stall Prevention level is reached and the actual Stall Prevention function is activated.
No. Name Setting Range Default
L3-27 Stall Prevention Detection Time 0 to 5000 ms 50 ms
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L3-36/L3-41: Vibration Suppression
Gain during Acceleration/Deceleration (with Current Limit)
There is normally no need to change these parameters from their default values. These parameters are valid when acceleration
stall prevention (with current limit) is enabled (L3-01 = 3), or when current-limited deceleration is selected for stall prevention
during deceleration (L3-04 = 6). Increase the setting values if oscillation occurs in the output current during acceleration/
deceleration.
No. Name Setting Range Default
L3-36
Vibration Suppression Gain during Acceleration
(with Current Limit)
0.0 to 100.0
Determined by
A1-02
L3-41
Vibration Suppression Gain during Deceleration
(with Current Limit)
1.0 to 1000.0
Determined by
A1-02
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L3-39/L3-44: Current-Limited Integral Time Constant during Acceleration/Deceleration
Set the time constant for acceleration/deceleration rate adjustment for current-limited acceleration/deceleration. There is
normally no need to change these parameters from their default values. These parameters are valid when acceleration or
deceleration stall prevention (with current limit) is enabled (L3-01 = 3 or 6).
No. Name Setting Range Default
L3-39 Current-Limited Integral Time Constant during Acceleration 1.0 to 1000.0 ms 100.0 ms
L3-44 Current-Limited Integral Time Constant during Deceleration 1.0 to 1000.0 ms 100.0 ms
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L3-40/L3-45: Current-Limited Maximum S-curve Selection during Acceleration/ Deceleration
Enable or disable the maximum S-curve for current-limited acceleration/deceleration (acceleration: L3-40, deceleration:
L3-45). Because it is optimized, the actual acceleration/deceleration time may exceed the setting.
Enable this function when an overcurrent (oC) or other error occurs immediately after starting acceleration or deceleration.
No. Name Setting Range Default
L3-40 Current-Limited Maximum S-curve Selection during Acceleration 0, 1 0
L3-45 Current-Limited Maximum S-curve Selection during Deceleration 0, 1 0
Setting 0: Disabled
Setting 1: Enabled
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L4: Speed Detection
These parameters set up the speed agree and speed detection functions that can be assigned to the multi-function output
terminals.
The speed is detected using the motor speed when A1-02 = 3 or 7.
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L4-01, L4-02: Speed Agree Detection Level and Detection Width
Parameter L4-01 sets the detection level for the digital output functions Speed agree 1, User-set speed agree 1, Frequency
detection 1, and Frequency detection 2.
Parameter L4-02 sets the hysteresis level for these functions.
5.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710636 04C U1000 Industrial MATRIX Drive Technical Manual
289
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Parameter Details

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