B3-02 speed search deactivation current, B3-03 speed search deceleration time – Yaskawa iQpump Controller Programming Manual User Manual
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YASKAWA TM.iQp.07 iQpump Controller Programming Manual
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Figure 1.24
Figure 24. Speed Search (Current Detection Method) after momentary power loss
where the power loss time exceeds the minimum baseblock time
◆
b3-02 Speed Search Deactivation Current
Setting Range:
0 ~ 200% of the iQpump drive rated output current
Factory Default: 120% of the iQpump drive rated output current
When using the current detection method of Speed Search, parameter b3-02 sets the current level that will determine when the search is
complete and the rotor and output speeds match. When the output frequency is higher than the actual rotor speed, the slip causes the
current to be high. As the output frequency is lowered, the closer it comes to the rotor speed, the lower the current draw will be. When the
output current drops below the level as set in b3-02 (100% = iQpump drive Rated Current) the output frequency stops decreasing and
normal operation resumes.
◆
b3-03 Speed Search Deceleration Time
Setting Range:
0.1 ~ 10.0 s
Factory Default: 2.0 s
Parameter b3-03 sets the deceleration ramp used by the current detection method of Speed Search when searching for the motor’s rotor
speed. Even if Speed Search 2 is selected, for Speed Search at start, the time entered into b3-03 will be the time to decelerate from
maximum frequency (E1-04) to minimum frequency (E1-09).
Setting of b3-01
Automatic Speed Search for all RUN
commands
Automatic Speed Search after
momentary power loss and baseblock
Speed Search Used for Run with
programmed multi-function input
0
No
Yes - Speed Estimation
Yes - Speed Estimation
1
Yes - Speed Estimation
Yes - Speed Estimation
Yes - Speed Estimation
2
No
Yes - Current Detection
Yes - Current Detection
3
Yes - Current Detection
Yes - Current Detection
Yes - Current Detection
AC power supply
Output frequency
Output current
OFF
ON
Output frequency before power loss
Set frequency
reference
Minimum baseblock time
(L2-03)
Deceleration speed set in b3-03
b3-02
Speed search operating time
Speed search wait time (b3-05)
Deceleration time set in b3-03