Chapter 4 Parameters
4-125
Time
B.B.
output current A
Input B.B. signal
Stop output voltage
Disable B.B. signal
Waiting time 08.07
Speed Search
Synchronization speed detection
Output frequency
( H)
07-09 Current Limit
for Speed Search Speed
FWD Run
B.B. Search with minimum output frequency upward timing chart
Output voltage
( V)
B.B. Search with minimum output frequency upward timing chart
Output frequency(H)
Output voltage(V)
Output current
06-03
Over-Current Stall
Prevention
during Accel.
FWD Run
Time
Input B.B. signal
Stop voltage output
Disable B.B. signal
Waiting time Pr.07-08
Speed search
Synchronization speed detection
B.B.
A
07-09
Current Limit for Speed Search
Unit: 1
Control
mode
VF VFPG SVC FOCPG TQCPG
Factory Setting: 150
Settings 20 to 200%
Following a momentary power loss, the AC motor drive will start its speed search
operation only if the output current is greater than the value set by Pr.8-07. When the
output current is less than the value of Pr.8-07, the AC motor drive output frequency is
at “speed synchronization point”. The drive will start to accelerate or decelerate back to
the operating frequency at which it was running prior to the power loss.
When executing speed search, the V/f curve is operated by group 1 setting. The
maximum current for the optimum accel./decel. and start speed search is set by Pr.07-
09.
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