Speed Limitation; Ramp-Function Generator - Siemens SIMATIC ET 200pro Series Operating Instructions Manual

Advanced commissioning
7.9 Setpoint calculation
7.9.5

Speed limitation

The maximum speed limits the speed setpoint range for both directions of rotation.
The converter generates a message (fault or alarm) when the maximum speed is exceeded.
If you must limit the speed depending on the direction of rotation, then you can define speed
limits for each direction.
Table 7- 23
Parameter
p1082
p1083
p1085
p1086
p1088
7.9.6

Ramp-function generator

The ramp-function generator in the setpoint channel limits the rate change of the speed
setpoint (acceleration). A reduced acceleration reduces the accelerating torque of the motor.
As a consequence, the motor reduces the stress on the mechanical system of the driven
machine.
The extended ramp-function generator not only limits the acceleration, but by rounding the
setpoint, also acceleration changes (jerk). This means that the motor does not suddenly
generate a torque.
132
Parameters for the speed limitation
Description
Maximum speed (factory setting: 1500 rpm)
Speed limit, positive direction of rotation (factory setting: 210,000 rpm)
CI: Speed limit, positive direction of rotation (factory setting: 1083)
Speed limit, negative direction of rotation (factory setting: -210,000 rpm)
CI: Speed limit, negative direction of rotation (factory setting: 1086)
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257324B AE
SIMATIC ET 200pro FC-2 converter