Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur télécharger pdf (Page 43)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 43

C2 S-Curve Acc

◆ S-Curve Characteristics

Setting Range: 0.00 ~ 2.50 s

Factory Default: 0.20 s

Parameters C2-01 and C2-02 will affect the acceleration rate of the output frequency in order to reduce shock to the load. The S-curve

addition to the acceleration profile can ramp the acceleration rate from a 0 to the rate specified by the active Acceleration Time (C1-01 or

C1-03) and back to 0.

Figure 1.32

Figure 32. S-curve Characteristic Timing Diagram

The S-Curve transition into and out of the active acceleration rate can be programmed independently. C2-01 will ramp up the acceleration

from no acceleration up to the rate of C1-01 or C1-03. C2-02 will ramp the acceleration rate from the rate of C1-01 or C1-03 back down

to no acceleration (constant speed). The use of S-Curve characteristics will lengthen the overall acceleration time as follows:

Figure 1.33

Figure 33. S-Curve Characteristic Timing Diagram

Parameter No. Parameter Name

C2-01 S-Curve Characteristic at Start

C2-02 S-Curve Characteristic at Stop

Output Frequency

Frequency Reference

Output Frequency

S-curve Characteristic

TIME

Time (Tsc)

Speed Command

Overall Aceleration Time Active Acceleration Time

C2-01()C2-02()+

----------------------------------------------

FWD Run Command

REV Run Command

Forward

Acceleration

Reverse

Acceler

ation

C2-01

C2-02

Output Frequency

TIME

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 301 302

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Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur Page 43