Best E5 Series User Manual page 94

Chapter 5 Specification of Parameters E5 User Manual
Output frequency
Linear
Accel
Time
Fig.5-10
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
if this parameter value is selected.
Actual Accel time = linear Accel time + (Time of initial segment of Accel S-curve
+ Time of last segment of Accel S-curve)/2
Actual Decel time = linear Decel time + (Time of initial segment of Decel S-curve + Time
of last segment of Decel S-curve)/2
Example:
Assuming that the maximum frequency P10.08 is 50Hz and the Accel time set is 6s, the linear
Accel time from initial status 10Hz to 40Hz = 6s ● (40Hz-10Hz)/50Hz = 3.6s
Assuming P12.15 = 0.20s and P12.16 = 0.40s, the actual Accel time under "S-curve
Accel/Decel A" = 3.6s + (0.20s + 0.40s)/2 = 3.9s.
 ATTENTION:
Provided the above-noted calculated linear Accel time is less than (Time of initial segment of
Accel S-curve + Time of last segment of Accel S-curve)/2, there will not be linear part.
Decel is the same as above.
3: S-curve Accel/Decel B
Schematic diagram is shown as Fig.5-11:
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