Yaskawa Z1000U - Manual (Page 148)

n b3-17: Speed Search Restart Current Level
Sets the current level at which Speed Estimation is restarted as a percentage of drive rated current to avoid overcurrent and
overvoltage problems since a large current can flow into the drive if the difference between the estimated frequency and the
actual motor speed is too big when performing Speed Estimation.
No. Name Setting Range Default
b3-17 Speed Search Restart Current Level 0 to 200% 150%
n b3-18: Speed Search Restart Detection Time
Sets the time for which the current must be above the level set in b3-17 before restarting Speed Search.
No. Name Setting Range Default
b3-18 Speed Search Restart Detection Time 0.00 to 1.00 s 0.10 s
n 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.
No. Name Setting Range Default
b3-19 Number of Speed Search Restarts 0 to 10 3
n b3-24: Speed Search Method Selection
Sets the Speed Search method.
No. Name Setting Range Default
b3-24 Speed Search Method Selection 1, 2 2
Setting 1: Speed Estimation
Setting 2: Current Detection 2
n 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 an SEr fault occurs.
No. Name Setting Range Default
b3-25 Speed Search Wait Time 0.0 to 30.0 s 0.5 s
n b3-27: Start Speed Search Select
Selects a condition to activate Speed Search Selection at Start (b3-01) or External Speed Search Command 1 or 2 from the
multi-function input.
No. Name Setting Range Default
b3-27 Start Speed Search Select 0, 1 0
Setting 0: Triggered when a Run Command Is Issued (Normal)
Setting 1: Triggered when an External Baseblock Is Released
n b5-01: PID Function Setting
Enables or disables the PID operation and selects the PID operation mode.
No. Parameter Name Setting Range Default
b5-01 PID Function Setting 0, 1, 3 0
Setting 0: PID Disabled
Setting 1: Output Frequency = PID Output 1
The PID controller is enabled and the PID output builds the frequency reference.
4.12 Advanced Drive Setup Adjustments
148 YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual