YASKAWA FSDrive-MV1000 Parameter Manual page 224
Super energy-saving medium-voltage ac drive, 2.4 kv class, 3 kv class, 4.16 kv class, 6 kv class, 11 kv class
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Also See for FSDrive-MV1000:
- Instructions for use manual (260 pages) ,
- Parameter manual (230 pages) ,
- Instructions manual (190 pages)
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2.9 n: Special Adjustments
u n2: Speed Feedback Detection Control (AFR) Tuning
These parameters are used to achieve speed stability when a load is suddenly applied or removed.
Note: Before making changes to the AFR parameters, make sure all motor parameters are set properly or perform Auto-Tuning.
n2-01: Speed Feedback Detection Control (AFR) Gain
n
Sets the internal speed feedback detection control gain in the AFR.
No.
n2-01
Normally there is no need to adjust n2-01 from the default setting. Make adjustments in the following cases:
• If hunting occurs, increase the setting value in steps of 0.05 while checking the response.
• If response is low, decrease the setting value in steps of 0.05 while checking the response.
n2-02, n2-03: Speed Feedback Detection Control (AFR) Time Constant 1, 2
n
Parameter n2-02 sets the time constant normally used by AFR.
Parameter n2-03 sets the time constant during Speed Search or regenerative operation.
No.
n2-02
Speed Feedback Detection Control (AFR) Time Constant 1 0 to 2000 ms
n2-03
Speed Feedback Detection Control (AFR) Time Constant 2 0 to 2000 ms
Note: Setting parameter n2-02 higher than n2-03 will trigger an oPE08 error.
These parameters rarely need to be changed. Adjust settings only under the following conditions:
• If hunting occurs, increase n2-02. If response is low, decrease it.
• Increase n2-03 if overvoltage occurs with high inertia loads at the end of acceleration or with sudden load changes.
• If setting n2-02 to a higher value, also increase C4-02 (Torque Compensation Delay Time 1) proportionally.
• If setting n2-03 to a higher value, also increase C4-06 (Torque Compensation Delay Time 2) proportionally.
n2-06: Speed Feedback Detection Control (AFR) Gain Switch Start Gain
n
Parameter n2-06 sets the gain-switching start gain for speed feedback detection control (AFR).
No.
n2-06
224
Name
Speed Feedback Detection Control (AFR) Gain
Name
Name
Speed Feedback Detection Control (AFR) Gain Switch
Start Gain
Setting Range
0.00 to 10.00
Setting Range
Setting Range
0.00 to 2.00
YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
Default
2.00
Default
250 ms
750 ms
Default
1.00
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