■ b3-18: Speed Search Restart Detection Time
Sets the time that the current must be greater than the level set in b3-17 before Speed Search can be restarted.
■
b3-19: Number of Speed Search Restarts
Sets the number of times the drive should attempt to find the speed and restart the motor. If the number of restart attempts
exceeds the value set to b3-19, the SEr fault will occur and the drive will stop.
■
b3-24: Speed Search Method Selection
Sets the Speed Search method used.
Setting 0: Current Detection Speed Search
Setting 1: Speed Estimation Speed Search
Note: For explanations of the Speed Search methods, Refer to Current Detection Speed Search (b3-24 = 0) on page 146 and Refer to
Speed Estimation Type Speed Search (b3-24 = 1) on page 147.
■ b3-25: Speed Search Wait Time
Sets the wait time between Speed Search restarts. Increase the wait time if problems occur with overcurrent, overvoltage,
or if the SEr fault occurs.
◆ b4: Delay Timers
The timer function is independent of drive operation and can be used to delay the switching of a digital output triggered
by a digital input signal. An on-delay and off-delay can be separately set. The delay timer can help to get rid of chattering
switch noise from sensors.
To enable the timer function, a multi-function input must be set to “Timer input” (H1-=18) and a multi-function
output must be set to “Timer output” (H2-=12). One timer can be used only.
■
b4-01, b4-02: Timer Function On-Delay, Off-Delay Time
b4-01 sets the on-delay time for switching the timer output. b4-02 sets the off-delay time for switching the timer output.
■
Timer Function Operation
When the timer function input closes for longer than the value set in b4-01, the timer output switches on. When the timer
function input is open for longer than the value set in b4-02, the timer output function switches off. The following
diagram demonstrates the timer function operation.
No. Name Setting Range Default
b3-18 Speed Search Restart Detection Time 0.00 to 1.00 s 0.10 s
No. Name Setting Range Default
b3-19 Number of Speed Search Restarts 0 to 10 3
No. Parameter Name Setting Range Default
b3-24 Speed Search Method Selection 0 or 1 0
No. Name Setting Range Default
b3-25 Speed Search Wait Time 0.0 to 30.0 s 0.5 s
No. Name Setting Range Default
b4-01
Timer Function On-Delay Time
0.0 to 3000.0 s 0.0 s
b4-02
Timer Function Off-Delay Time
0.0 to 3000.0 s 0.0 s
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