on age or thermal factors, a broader control range should be blocked. To ensure that the speed
does not constantly increase and decrease in the suppression bandwidth (speeds), the bands
are assigned a hysteresis.
Specify a minimum speed in order to block a specific range around the stopped state for
stationary operation.
Table 8-2
Parameter
Parameter
Setting
p1091
Suppression speed 1
p1092
Suppression speed 2
p1093
Suppression speed 3
p1094
Suppression speed 4
p1101
Suppression speed bandwidth
p1080
Minimum speed
r1112
Speed setpoint after minimum limiting
You can find additional information in function diagrams 1550 and 3050.
Speed limitation
The speed limitation is used to limit the maximum permitted speed for the complete drive train.
The drive and the load machine / process are protected from damage caused by overspeed.
Table 8-3
Parameter
Parameter
Setting
p1082
Maximum speed, both directions of rotation
p1083
Speed limit in positive direction of rotation
p1086
Speed limit in negative direction of rotation
You can find additional information in function diagrams 1550 and 3050.
Ramp-function generator
The ramp-function generator limits the rate at which the setpoint changes when the drive is
accelerating or decelerating. This prevents excessive setpoint step changes from damaging
the drive train. Parameter p1115 can be used to select two ramp-function generators.
To improve the control properties with regard to load surges, set additional rounding times in
the lower and upper speed range.
The rounding times achieve the following:
● They protect mechanical components, such as shafts and couplings.
● The overshoot of the actual speed while approaching the setpoint is avoided. The control
quality is improved.
Operation
8.5 Functions
SINAMICS SM150 6SL3845-2NN41-8AD0
Operating Instructions Rev.201908010908 EXAMPLE
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Содержание Sinamics SM150 6SL3845-2NN41-8AD0
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