Emotron VSB Instruction Manual Chapter 6 Specification of Parameters
ATTENTION:
When broken-line Accel/Decel is enabled, " Accel/Decel time determinant 1" and "
Accel/Decel time determinant 2" will be disabled.
Broken-line Accel/Decel is as shown in Fig. 6-11.
Fig. 6-11
t1 = (b2-03)×(b2-13)/(b0-08) t2 =(b2-01)×[f-(b2-13)]/(b0-08)
t3 = (b2-02)×[f-(b2-14)]/(b0-08) t4 = (b2-04)×(b2-14)/(b0-08)
f is current frequency command, and b0-08 is maximum frequency.
2: S-curve Accel/Decel
By adding a period of S-curve time to the initial and ending segments of Accel/Decel, it can
improve the smoothness of start/stop and prevent mechanical impact. See Fig. 6-12:
Fig. 6-12
Accel/Decel rate changes gradually at the initial and ending segments of S-curve time. At
the middle segment of S-curve, it is linear Accel/Decel rate, which is determined by enabled
Accel/Decel time 1 - 4. Therefore, the actual Accel/Decel time is longer than linear Accel/Decel
输出频率
t1
(加速时间)
f
b2-14
b2-13
t2
(加速时间)
t3
(减速时间)
t4
(减速时间)
时间
输出频率
时间
b2-15
b2-16 b2-17
b2-18
f
t1
t2
直线
加速
Accel
- 92 -