2.3 b: Application
220 YASKAWA TOEPYAIGA8002B GA800 Drive Programming
Gradually increase the setting value when a large quantity of current flows after speed search starts. If you set this
value too high, speed search will not operate correctly.
■ b3-56: InverseRotationSearch WaitTime
No.
(Hex.)
Name Description
Default
(Range)
b3-56
(3126)
InverseRotationSearch
WaitTime
Sets the wait time until the drive starts inverse rotation search after it completes forward search when
you do inverse rotation search during Current Detection Speed Search.
Determined by o2-04
(0.1 - 5.0 s)
■ b3-61: Init Magnet Pole Estimation Gain
No.
(Hex.)
Name Description
Default
(Range)
b3-61
(1B96)
Expert
Init Magnet Pole Estimation
Gain
Adjusts the Initial Pole Detection response gain when A1-02 = 6 [Control Method Selection = AOLV/
PM]. Set b3-61 > 0.0 for a general IPM motor.
5.0
(-20.0 - +20.0)
Use this when n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection]. Adjusts the response gain for
Initial Pole Detection. Specify a positive value for an ordinary motor. The drive sets this value automatically when
High Frequency Injection Tuning completes correctly.
◆ b4: Timer Function
The drive uses timers to delay activating and deactivating MFDO terminals.
Timers prevent sensors and switches from making chattering noise.
There are two types of timers:
• Timers that set a delay for timer inputs and timer outputs.
These timers delay activating and deactivating of the MFDIs and MFDOs.
To enable this function, set H1-xx = 18 [MFDI Function Select = Timer Function], and set H2-01 to H2-03 = 12
[MFDO Function Select = Timer Output].
• Timers that set a delay to activate and deactivate MFDO terminals.
These timers delay activating and deactivating MFDO terminals.
To enable this function, set delay times in parameters b4-03 to b4-08.
■ Timer Function Operation
• Timers that Set a Delay for Timer Inputs and Timer Outputs
Triggers timer output if the timer input is active for longer than the time set in b4-01 [Timer Function ON-Delay
Time]. Triggers timer output late for the time set in b4-02 [Timer Function OFF-Delay Time]. Figure 2.32 shows an
example of how the timer function works.
Figure 2.32 Example of Timer Function Operation
• Setting On/Off-delay Time for MFDO
Figure 2.33 uses H2-01 terminals to show an example of how the timer function works. Use b4-03 [Terminal M1-
M2 ON-Delay Time] and b4-04 [Terminal M1-M2 OFF-Delay Time] to set this function.
To Next Page
Loading...
