B4: Timer Function - YASKAWA GA800 Technical Reference

12.3 b: Application
• 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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b3-55: Current Increment Time
No.
Name
(Hex.)
b3-55 Current Increment Time
(3124)
Expert
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.
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b3-56: InverseRotationSearch WaitTime
No.
Name
(Hex.)
b3-56 InverseRotationSearch
WaitTime
(3126)
■
b3-61: Initial Pole Detection Gain
No.
Name
(Hex.)
b3-61 Init Magnet Pole Estimation
Gain
(1B96)
Expert
Note:
• Set n8-35 = 1 [Initial Pole Calculation Method = High Frequency Injection] to enable this parameter.
• The drive automatically calculates this value when High Frequency Injection Auto-Tuning completes successfully.
Used when n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection]. Sets the responsiveness for initial
motor magnetic pole calculation. Set this parameter to a positive value for an ordinary monitor. When you use High
Frequency injection Tuning, it will automatically set this parameter.
◆

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].
an example of how the timer function works.
742
V/f CL-V/f OLV CLV AOLV
Sets the length of time that the drive will increase the current from zero current to the setting value of
b3-06 [Speed Estimation Current Level 1].
V/f CL-V/f OLV CLV AOLV
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.
V/f CL-V/f OLV CLV AOLV
Sets the responsiveness for initial motor magnetic pole calculation when A1-02 = 6 [Control Method
Selection = AOLV/PM]. Set b3-61 > 0.0 for an ordinary IPM motor.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Default
(Range)
10 ms
(10 - 2000 ms)
Default
(Range)
Determined by o2-04
(0.1 - 5.0 s)
Default
(Range)
5.0
(-20.0 - +20.0)
Figure 12.32 shows