Mitsubishi Electric FR-E700 Instruction Manual page 226

Acceleration and deceleration
Acceleration time setting (Pr. 7, Pr. 20)
Use Pr. 7 "Acceleration time" to set the acceleration time required to reach Pr. 20 "Acceleration/de-
celeration reference frequency" from 0 Hz.
Set the acceleration time according to the following formula:
Acceleration
time setting
Example When Pr. 20 = 50 Hz (initial value), Pr. 13 = 0.5 Hz
The acceleration can be made up to the maximum operating frequency of 40 Hz in 10 s.
=
Pr. 7
Deceleration time setting (Pr. 8, Pr. 20)
Use Pr. 8 "Deceleration time" to set the deceleration time required to reach 0 Hz from Pr. 20 "Accel-
eration/deceleration reference frequency".
Set the deceleration time according to the following formula:
Deceleration
time setting
Example When Pr. 20 = 120 Hz, Pr. 10 = 3 Hz
The deceleration can be made up from the maximum operating frequency of 40 Hz to a stop in
10 s.
=
Pr. 8
6 - 72
Pr. 20
--------------------------------------------------------------------------------------------------------- Acceleration time from stop to
=
Maximum operating frequency Pr. 13
50 Hz
------------------------------------- - 10 s = 12.7 s
40 Hz 0.5 Hz
–
Pr. 20
= ---------------------------------------------------------------------------------------------------------
Maximum operating frequency Pr. 10
120 Hz
-------------------------------- - 10 s = 32.4 s
40 Hz 3 Hz
–
Fig. 6-29:
Acceleration/deceleration time
– maximum operating frequency
Deceleration time from maximum
– operating frequency to stop
Parameter
I000006C