(,
Momentary power
loss time
Min.
baseblock time
Inverter baseblock
time
Momentary power
loss time
Min.
baseblock time
Inverter baseblock
time
When min. baseblock
time is longer than mo-
mentary power loss time.
When min. baseblock
time is shorter than mo-
mentary power loss time.
To ensure that a fault such as OC does not occur during speed
searchoperation, V/f must be reducedduringspeed searchopera-
tion, as compared with that during normal operation. Set V/f during
speed search as follows by the set value of No. 56:
V/f during speed search = V/f at normal operation x No. 56
2-10-25Output Voltage Limitter
Item name Constant to be set Factory preset
Output voltage limitter No. 1 0000
The Inverter may malfunction if V/f is extremely large. To limit the
output voltage in order to prevent the Inverter frommalfunctioning,
use the output voltage limiter function. In usual operation, howev-
er, it is not necessary to use this function.
No. 1 = 0xxx
0: With output voltage limitter
1: Without output voltage limitter
250 V
Frequency
Output voltage
20 V
10 V
No. 4No.4
40
(No. 4 = Maximum voltage frequency)
Output voltage
limitter pattern
The output voltage will not exceed the upper limit if No. 1 is set to
0xxx.
V/f During Speed
Search (No. 56)
Section 2-10
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