—————— Instruction manual ——————
163
S shape t const
Defines the acceleration/deceleration curve for S-shaped ramp.
S acc t const
Defines the acceleration curve for S-shaped ramp.
S dec t const
Defines the deceleration curve for S-shaped ramp.
For
Ramp Shape
=
Linear
refer to previous section 6.6.1 for ramp description.
For
Ramp Shape
=
S-Shaped
refer to the description reported hereafter.
During a motor acceleration, the S ramp is defined by 3 section.
The first and the third, named Ts in the following picture, are equal. Their shape depends on the jerk set in the
parameter
S acc t cons
. The second section, named Tlin, is a linear ramp expressed as delta speed / delta time.
The same consideration can be done for the motor deceleration.
Figure 6.6.2.1: S shape acceleration ramp
Ramp Reference
S
0
Ts
Tlin
Ts
t
Example: calculation of the total ramp time
P21
Acc. Delta speed
= 10rpm
P22
Acc. Delta time
= 10s
P110
Ramp ref
= 60rpm
P663
S acc t const
= 6000ms
Acc Jerk= Acceleration Jerk [rpm/s^2 ]
Acc Jerk= 2*
Acc. Delta speed
/(
S acc t const
/1000)^2
Acc Jerk= 2*10/(6000/1000)^2 =0.56 [rpm/s^2 ]
Alin= Linear Acceleration [rpm/s]
Alin=
Acc. Delta speed
/
Acc Delta time
[rpm/s]
Alin= 10/10=1 [rpm/s]
T1= Theoretic time to end the S shape [s]
T1= Alin/Acc Jerk [s]
T1= 1/0.56=1.8 [s]
VT1= Speed reached at T1 [rpm]
VT1=1/2*Acc Jerk*T1^2 [rpm]
VT1=1/2*0.56*(1.8)^2=0.9 [rpm]
If
VT1<
Ramp ref
/2
Jerk time Ts=T1=1.8 [s]
Linear acceleration time= Tlin [s]
Tlin=((
Ramp ref
-(2*VT1)))/Alin [s]
Tlin=(60-( 2*0.9 ))/1.8=58.2 [s]
Total acceleration time=Ttacc=Tlin+(2*Ts) [s]
Ttacc=58.2+(2*1.8)=61.8 [s]
Содержание TPD32-EV-...-2B
Страница 1: ... Instruction manual Industrial Application DC drives TPD32 EV ...
Страница 62: ... TPD32 EV 62 10 mm 0 4 150 mm 6 150 mm 6 150 mm 6 10 mm 0 4 10 mm 0 4 50 mm 2 Figure 3 3 2 Mounting Clearance ...
Страница 372: ... TPD32 EV 372 9 BLOCK DIAGRAM 9 1 CONTROL BLOCK DIAGRAMS ...
Страница 373: ... Instruction manual 373 ...
Страница 374: ... TPD32 EV 374 ...
Страница 375: ... Instruction manual 375 ...
Страница 376: ... TPD32 EV 376 ...
Страница 377: ... Instruction manual 377 ...
Страница 378: ... TPD32 EV 378 ...
Страница 379: ... Instruction manual 379 ...
Страница 380: ... TPD32 EV 380 ...
Страница 381: ... Instruction manual 381 ...
Страница 382: ... TPD32 EV 382 ...
Страница 383: ... Instruction manual 383 ...
Страница 384: ... TPD32 EV 384 ...
Страница 385: ... Instruction manual 385 ...
Страница 386: ... TPD32 EV 386 ...
Страница 387: ... Instruction manual 387 ...
Страница 388: ... TPD32 EV 388 ...
Страница 389: ... Instruction manual 389 ...
Страница 390: ... TPD32 EV 390 ...
Страница 391: ... Instruction manual 391 ...
Страница 392: ... TPD32 EV 392 ...
Страница 393: ... Instruction manual 393 ...
Страница 394: ... TPD32 EV 394 ...
Страница 395: ... Instruction manual 395 ...
Страница 396: ... TPD32 EV 396 ...
Страница 397: ... Instruction manual 397 ...
Страница 398: ... TPD32 EV 398 ...
Страница 399: ... Instruction manual 399 ...
Страница 400: ... TPD32 EV 400 ...
Страница 401: ... Instruction manual 401 ...
Страница 402: ... TPD32 EV 402 ...
Страница 501: ... Instruction manual 501 APPENDIX 3 ACCESSORIES A3 1 EAM Adapter Kit EAM1579 EAM1580 ...
Страница 503: ......