12.3 b: Application
522 YASKAWA SIEPC71061753C GA500 Technical Manual
Set this parameter as a ratio of E2-03 [Motor No-Load Current]. The setting is a ratio with respect to 30% of the
motor rated current when E2-03 ≤ E2-01 [Motor Rated Current (FLA)] × 0.3.
Note:
When A1-02 = 8 [Control Method Selection = EZOLV], the setting is a ratio with respect to E9-06 [Motor Rated Current (FLA)] × 0.5.
■ b3-32: Spd Search Current Complete Lvl
No.
(Hex.)
Name Description
Default
(Range)
b3-32
(0BC1)
Expert
Spd Search Current
Complete Lvl
Sets the current level that completes Speed Search.
1.20
(0.00 - 1.49)
The Current Detection Speed Search gradually decreases the output frequency to search for the motor speed when
the output current is equal to or less than Speed Search Current Complete Level.
Set this parameter as a ratio of E2-03 [Motor No-Load Current]. The setting is a ratio with respect to 30% of the
motor rated current when E2-03 ≤ E2-01 [Motor Rated Current (FLA)] × 0.3.
Note:
When A1-02 = 8 [Control Method Selection = EZOLV], the setting is a ratio with respect to E9-06 [Motor Rated Current (FLA)] × 0.5.
■ b3-33: Speed Search during Uv Selection
No.
(Hex.)
Name Description
Default
(Range)
b3-33
(0B3F)
Expert
Speed Search during Uv
Selection
Sets the function that starts Speed Search at start-up if the drive detects a Uv [Undervoltage]
when it receives a Run command.
1
(0, 1)
Set these three parameters as shown to enable b3-33:
• L2-01 = 1, 2 [Power Loss Ride Through Select = Enabled for L2-02 Time, Enabled while CPU Power Active]
• b3-01 = 1 [Speed Search at Start Selection = Enabled]
• b1-03 = 1 [Stopping Method Selection = Coast to Stop]
0 : Disabled
1 : Enabled
■ b3-39: Regen Judgment Lv of Spd Search
No.
(Hex.)
Name Description
Default
(Range)
b3-39
(1B8F)
Expert
Regen Judgment Lv of Spd
Search
Sets the level to determine the regenerative state during speed search. Usually it is not necessary
to change this setting.
15%
(0 - 50%)
If the speed search is not completed after starting the speed search, increase the setting value in 5% increments
after the drive stops.
If the drive detects ov [Overvoltage] during speed search, decrease the setting value in 5% increments after the
drive stops.
■ b3-54: Search Time
No.
(Hex.)
Name Description
Default
(Range)
b3-54
(3123)
Search Time
Sets the length of time that the drive will run Speed Search.
400 ms
(10 - 2000 ms)
If you set this parameter too low, Speed Search will not operate correctly.
If the drive detects oC [Overcurrent] immediately after Speed Search Starts:
• Increase the value of L2-03 [Minimum Baseblock Time] and decrease the motor speed you use to start Speed
Search.
• Increases the setting value of b3-08 [Speed Estimation ACR P Gain].
• Increase the value of b3-54.
If the drive detects oC or ov [DC Bus Overvoltage] during Speed Search, increase the value of b3-08.
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