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Changing acceleration and deceleration time
(Pr. 7, Pr. 8)
5
ADJUSTMENT
5.4 Changing acceleration and deceleration time (Pr. 7, Pr. 8)
* Depends on the Pr. 21 Acceleration/deceleration time increments setting. The initial value for the setting range is "0 to 3600s" and setting increments is
"0.1s".
Set in Pr. 7 Acceleration time a larger value for a slower speed increase and a smaller value for a faster speed increase.
Set in Pr. 8 Deceleration time a larger value for a slower speed decrease and a smaller value for a faster speed decrease.
Parameter
Number
Name Initial Value
Setting
Range
Description
7 Acceleration time
7.5K or lower
5s
0 to 3600/
360s
*
Set the motor acceleration time.
11K or higher
15s
8 Deceleration time
7.5K or lower
10s
0 to 3600/
360s
*
Set the motor deceleration time.
11K or higher
30s
Changing example Change the Pr. 7 Acceleration time setting from "5s"
to "10s".
REMARKS
If torque is required in low-speed range (rated motor frequency (refer to page 44) /10), set Pr.791 Acceleration time in low-speed
range and Pr.792 Deceleration time in low-speed range higher than the Pr.7 and Pr.8 settings so that the slow acceleration/
deceleration is performed in the low-speed range. (Refer to the Instruction Manual (Applied) for Pr.791 and Pr.792)
Running
frequency
Acceleration
time
Deceleration
time
Time
Pr.20
Pr.7
Pr.8
Output
frequency
(Hz)
(60Hz)
1.Screen at power-ON
The monitor display appears.
Display
Operation
3.Press to choose the parameter
setting mode.
4. Pr. 7) appears.
Flicker ··· Parameter setting complete!!
7.Press to set.
PU indicator is lit.
2.Operation mode setting
Press to choose the PU operation
mode.
· Press to show the setting again.
· Press twice to show the next parameter.
· By turning , you can read another parameter.
The initial value
differs according
to the capacity.
5.Press to read the present set value.
" "(initial value) appears.
6.Turn to change it to the set
value " ".
The parameter
number read
previously appears.