YASKAWA T1000V, Техническое руководство

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5.2 b: Application
120 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
■ b3-17: Speed Search Restart Current Level
If there is a fairly large difference between the estimated frequency and the actual motor speed when performing Speed
Estimation, a large current can flow. This parameter sets the current level at which Speed Estimation is restarted, thus
avoiding overcurrent and overvoltage problems. The parameter is set as a percentage of the drive rated current. This
function has no influence when Current Detection Speed Search is used (b3-24 = 0).
■
b3-18: Speed Search Restart Detection Time
Sets the time the current must be above the level set in b3-17 before Speed Search is restarted. This function has no
influence when Current Detection Speed Search is used (b3-24 = 0)
■ b3-19: Number of Speed Search Restarts
Sets the number of times the drive should attempt to find the speed and restart the motor using Speed Estimation Speed
Search. This function has no influence when Current Detection Speed Search is used (b3-24 = 0).
■
b3-24: Speed Search Method Selection
Sets the Speed Search method used.
Note: For explanations of the Speed Search methods, Refer to Current Detection Type Speed Search (b3-24 = 0) on page 116 and
Refer to Speed Estimation Type Speed Search (b3-24 = 1) on page 115 .
Setting 0: Current Detection Speed Search
Setting 1: Speed Estimation Speed Search
■ b3-25: Speed Search Wait Time
Sets the wait time between Speed Search restarts.
◆ b4: Delay Timers
The timer function is independent of the 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.
No. Name Setting Range Default
b3-17 Speed Search Restart Current Level 0 to 200% 150%
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