5.2 b: ApplicationYASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual 151Parameter Details5■ b3-18: Speed Search Restart Detection TimeSets 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 RestartsSets the number of times the drive should attempt to find the speed and restart the motor. If the number of restart attemptsexceeds the value set to b3-19, the SEr fault will occur and the drive will stop.■ b3-24: Speed Search Method SelectionSets the Speed Search method used.Setting 0: Current Detection Speed SearchSetting 1: Speed Estimation Speed SearchNote: For explanations of the Speed Search methods, Refer to Current Detection Speed Search (b3-24 = 0) on page 146 and Refer toSpeed Estimation Type Speed Search (b3-24 = 1) on page 147.■ b3-25: Speed Search Wait TimeSets 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 TimersThe timer function is independent of drive operation and can be used to delay the switching of a digital output triggeredby a digital input signal. An on-delay and off-delay can be separately set. The delay timer can help to get rid of chatteringswitch noise from sensors.To enable the timer function, a multi-function input must be set to “Timer input” (H1-=18) and a multi-functionoutput must be set to “Timer output” (H2-=12). One timer can be used only.■ b4-01, b4-02: Timer Function On-Delay, Off-Delay Timeb4-01 sets the on-delay time for switching the timer output. b4-02 sets the off-delay time for switching the timer output.■ Timer Function OperationWhen the timer function input closes for longer than the value set in b4-01, the timer output switches on. When the timerfunction input is open for longer than the value set in b4-02, the timer output function switches off. The followingdiagram demonstrates the timer function operation.No. Name Setting Range Defaultb3-18 Speed Search Restart Detection Time 0.00 to 1.00 s 0.10 sNo. Name Setting Range Defaultb3-19 Number of Speed Search Restarts 0 to 10 3No. Parameter Name Setting Range Defaultb3-24 Speed Search Method Selection 0 or 1 0No. Name Setting Range Defaultb3-25 Speed Search Wait Time 0.0 to 30.0 s 0.5 sNo. Name Setting Range Defaultb4-01 Timer Function On-Delay Time 0.0 to 3000.0 s 0.0 sb4-02 Timer Function Off-Delay Time 0.0 to 3000.0 s 0.0 s
