B4: Timer Function - YASKAWA HV600 Manual

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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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)
◆

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.
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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].
example of how the timer function works.
• Setting On/Off-delay Time for MFDO
Figure 2.23 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.
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
V/f OLV/PM EZOLV OLV/PM
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 OLV/PM EZOLV OLV/PM
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.
Figure 2.22 Example of Timer Function Operation
Description
Description
2.3 b: Application
Default
(Range)
10 ms
(10 - 2000 ms)
Default
(Range)
Determined by o2-04
(0.1 - 5.0 s)
Figure 2.22 shows an
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