Optional Interpolation Of The Ramp Function Generator Input Set Value - Baumuller b maXX BM3000 Operating Manual

Description of the Software Modules and Parameters
dV



Now determine the resulting ramp-up time:
t
Scurve
t
total

4.6.1.1 Optional interpolation of the ramp function generator input set value

A cyclical and synchronous transferred speed set value which is mapped to the input set
value
tor (RFG) cycle
lated by the controller and is transferred in the adjusted set value cycle. The interpolation
is switched on by setting bit 11 in
switched off at active interpolation.
Here, is recommended to configure the set value processing of the ramp function gener-
ator in the fieldbus task. This is made by
was made the controller must be restarted.
The controller interpolates from set value cycle to the ramp function generator cycle
(Z110.22–). For this the set value cycle in parameter
terpolation must be activated. Both must take place before enabling the operation mode
speed control or speed setting 1. A change at active ramp function generator is invalid!
The ramp function generator interpolates if the set value cycle time (Z145.11–) is greater
than the active cycle time of the ramp function generator (Z110.22–)
Example 1: Fieldbus cycle = 1 ms, set value cycle = 6 ms und ramp function generator cycle = 1 ms
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Example 2: Fieldbus cycle = set value cycle = 2 ms and ramp function generator cycle = 1 ms
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
= T / T
Scurve Scurve Ramp-up
dV > dV
Scurve total
maximum acceleration is not achieved.
only "S-Curve phase" present

= (dV / dV
total Scurve
= t
Scurve
or Z110.5–), can be interpolated optionally to the ramp function genera-
(Z110.4–
(Z110.22–
A new calculated set value is transferred only in every sixth fieldbus cycle
The ramp function can be configured in the fieldbus task as well as in the RT1 
task.
Z131.18–
Fieldbus cycle time = 1 ms and
task = 1
Z145.11–
Virt. master set value cycle time = Interpolation interval = 6 ms
6 ms / 1 ms - 1 = 5
Interpolator generates 5 interpolated set values in the ramp function 
generator.
A new set value is transferred in each fieldbus cycle.
The ramp function can be configured in the fieldbus task as well as in the RT1 
task.
* 100 % = 200 ms / 800 ms * 100 % = 25 %

) * 2 * T = (12.5 % / 25 %) * 2 * 200 ms = 283 ms
Scurve
Active cycle time ramp generator). The speed profile is calcu-
Z110.2–
Mode. The ramp function generator is usually
Z110.2–
Parameter manual b maXX BM3000
Document no.: 5.12001.07
Mode bit 16 = 1 and after this setting
Z145.11–
must be set and the in-
Z131.20–
Division ratio fieldbus 
4
403
of 820