59
Note
S-curve characteristics time refers to the time from acceleration
rate 0 to the time when a normal acceleration rate determined by a
specified acceleration time is obtained.
Time chart at FWD/REV run change with S-curve characteris-
tics:
The figure below shows the time chart at FWD/REV run change
during deceleration and stop.
FWD RUN command
REV RUN command
Output frequency
Min. output frequency
No-07
Acceleration
Deceleration
DC injection braking
time stopping
No-27
Min. output
frequency
No-07
Acceleration
Deceleration
: S-curve characteristic
Note
When digits 3 and 4 are 00, no S-curve characteristics at comple-
tion of deceleration.
Time chart at FWD/REV run change without S-curve charac-
teristics:
The figure below shows the time chart at FWD/REV run change
during deceleration and stop.
FWD RUN command
REV RUN command
Output frequency
Min. output frequency
No-07
Acceleration
Deceleration
DC injection braking
time at stopping
No-27
Min. output
frequency
No-07
Acceleration
Deceleration
2-8-21 Other Functions
Item name
Constant to be set
Factory preset
Function setting
No. 46
0110
Digit 1 = 0: When momentary stop is detected, power failure (UV
fault) occurs and the Inverter output is shut off.
Digit 1 = 1: If momentary stop time is within momentary assurance
time (see note), the operation continues after the momentary stop.
If the momentary assurance time is exceeded, the Inverter output
is shut off.
Operation Continued
at Momentary Stop
Description of Functions and Constants
Section 2-8
