Mitsubishi Electric FR-A720-0.4K Instruction Manual page 206

FR-A
700
Instruction Manual Supplement
For the FR-A740 and FR-A720, the following specifications are
added.
(1) Acceleration/deceleration time switching frequency (Pr. 147 )
When output frequency reaches Pr. 147 Acceleration/deceleration time switching
frequency or higher, the acceleration/deceleration time automatically switches to
Pr. 44 Second acceleration/deceleration time and Pr. 45 Second deceleration time settings.
The RT signal is not necessary for switching the acceleration/deceleration time.
Pr.
Number
Acceleration/
deceleration time
147
switching
frequency
• When the RT signal (X9 signal) turns ON, the acceleration/deceleration time
switches to the second (third) acceleration/deceleration time even when the
output frequency has not reached the Pr. 147 setting. Priority of switching is
X9 signal > RT signal > Pr. 147 setting.
• If the Pr. 147 setting is lower than Pr. 10 DC injection brake operation frequency or
Pr. 13 Starting frequency setting, the acceleration/deceleration time switches to
the Pr. 44 (Pr. 45) setting when the output frequency exceeds the Pr. 10 or Pr. 13
setting.
Pr. 147 Setting
9999 (initial value)
0.00Hz
0.01Hz Pr. 147 Set
frequency
Set frequency Pr. 147
Series
Initial
Name
Value
9999
Deceleration Time
Output frequency Pr. 147
Pr. 147 Output frequency
Setting
Range
Frequency when automatically
0 to
switching to the acceleration/
400Hz
deceleration time of Pr. 44 and Pr. 45.
9999 No function
Acceleration/
Pr. 7, Pr. 8
Pr. 44, Pr. 45
: Pr. 7, Pr. 8
: Pr. 44, Pr. 45
Pr. 7, Pr. 8
1/4
Description
Description
No automatic switching of
the acceleration/
deceleration time
Second acceleration/
deceleration time from a
start
Acceleration/deceleration
time automatic switching
No automatic switching,
since output frequency will
not reach the switching
frequency
BCN-C22005-617