Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-07-3
operation. If it exceeds the Maximum Allowable Power Loss Time, the AC motor drive output is
then turned off (coast stop).
The selected operation after power loss in Pr.07-06 is only executed when the maximum
allowable power loss time is ≤5 seconds and the AC motor drive displays “LU”.
But if the AC motor drive is powered off due to overload, even if the maximum allowable power
loss time is ≤5 seconds, the operation mode as set in Pr.07-06 is not executed. In that case it
starts up normally.
Base block Time
Factory Setting: 0.5
Settings 0.0~5.0 sec
Pr 07-08 Factory Setting:
KW 007 015 022 037 040 055 075 110 150
HP 1 2 3 5 5.5 7.5 10 15 20
Pr07-08 (sec) 0.3 0.4 0.5 0.6 0.7 0.7 0.8 0.9 1
KW 185 220 300 370 450 550 750 900
HP 25 30 40 50 60 75 100 125
Pr07-08 (sec) 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8
When momentary power loss is detected, the AC drive will block its output and then wait for a
specified period of time (determined by Pr.07-08, called Base-Block Time) before resuming
operation. This parameter should be set at a value to ensure that any residual regeneration
voltage from the motor on the output has disappeared before the drive is activated again.
B.B.
A
Output frequency(H)
Output voltage(V)
Output current
07-09
Current Limit for
Speed Search
FWD Run
Time
B.B. Search with last output frequency downward timing chart
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time Pr.07-08
Speed search
Synchronization speed detection
7
7
Frequency command before B.B.
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