- Mitsumi Electronics Welding System User Manual

PARAMETERS
70
4.2.5 Acceleration/deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45)
Pr. 7 "acceleration time"
Pr. 8 "deceleration time"
Pr. 20 "acceleration/deceleration reference
frequency"
Pr. 21 "acceleration/deceleration time increments"
Pr. 44 "second acceleration/deceleration time"
Pr. 45 "second deceleration time"
Used to set motor acceleration/deceleration time.
Set a larger value for a slower speed increase/decrease or a smaller value for a faster speed
increase/decrease.
Parameter Number
Factory
Setting
Setting Range Remarks
7.5K or less 5 s
7
11K or more 15 s
0 to 3600 s/0 to 360 s
7.5K or less 10 s
8
11K or more 30 s
0 to 3600 s/0 to 360 s
20 60Hz
〈
50Hz
〉
1 to 120Hz
21 0 0, 1 0: 0 to 3600 s, 1: 0 to 360 s
7.5K or less
44
11K or more
5 s 0 to 3600 s/0 to 360 s
7.5K or less
45
11K or more
9999 0 to 3600 s/0 to 360 s, 9999
9999: Acceleration time =
deceleration time
Pr.20
Pr.8
Pr.45
Deceleration
time
Output frequency (Hz)
Running frequency
Time
Pr.7
Pr.44
Acceleration
time
<Setting>
•
Use Pr. 21 to set the acceleration/deceleration time and minimum setting increments:
Set value "0" (factory setting) ...........0 to 3600 s (minimum setting increments: 0.1 s)
Set value "1" .....................................0 to 360 s (minimum setting increments: 0.01 s)
•
Use Pr. 7 and Pr. 44 to set the acceleration time required to reach the frequency set in Pr. 20 from 0Hz.
•
Use Pr. 8 and Pr. 45 to set the deceleration time required to reach 0Hz from the frequency set in Pr. 20.
•
Pr. 44 and Pr. 45 are valid when the RT signal is on.
•
Set "9999" in Pr. 45 to make the deceleration time equal to the acceleration time Pr. 44.
Pr. 3 "base frequency"
Pr. 29 "acceleration/deceleration
pattern"
Related parameters