GK600 User Manual
Chapter 6 Specification of Parameters
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Fig. 6-15
S-curve time at first segment of Accel is (b2-19×t1) in the figure, in which the Accel rate
increases progressively. In this period, the S-curve time at last segment is (b2-20×t1) and the
Accel rate decreases gradually. At the middle of t1, it is linear Accel with a constant rate which
is adjusted automatically based on the setting of b2-19 and b2-20.
Decel period t2 is similar as above.
Make sure the sum of proportions of the first and last segments is no more than 100%, i.e. the
sum of set values of b2-19 and b2-20 should not exceed 100.0%, while that of b2-21 and b2-22
should not exceed 100%.
Example:
Assuming that the maximum frequency b0-08 is 50Hz and the Accel time setting is 6s, the
linear Accel time required for Accel from initial status 10Hz to 40Hz = 6s × (40Hz-10Hz)/50Hz =
3.6s
Assuming that b2-19 = 20.0% and b2-20 = 30.0%, The first segment of Accel S-curve should
be 20.0% × 3.6s = 0.72s; last segment of Accel S-curve should be 30.0% × 3.6s = 1.08s; linear
Accel time at middle segment should be 3.6s - 0.72s - 1.08s = 1.8s.
Difference between S-curve Accel/Decel A and B: Middle-segment Accel/Decel rate of S-curve
Accel/Decel A is determined by the selected Accel/Decel time 1~4, not subject to the effect of
S-curve time span, therefore the total Accel/Decel time changes with the variation of setting of
S-curve time.
When some certain Accel/Decel time is selected for S-curve Accel/Decel B, the total time of
Accel/Decel is constant, but with different proportion of the first part and the last part, the rate of
linear part as well as the shape of S-curve will change.
输出频率
时间
b2-19
b2-20
b2-21
b2-22
f
t1
t2
直线
加速
Output frequency
Time
Linear
Accel
