Ramp Generator - Siemens SIMATIC ET 200SP F-TM Equipment Manual

Commissioning the
7.5 Setpoint channel
7.5.3

Ramp generator

The F-TM ServoDrive uses the speed ramp generator type "Basic ramp function generator"
p1115[0].
Speed ramp generator
The speed ramp generator is used to limit the acceleration at sudden setpoint changes and
helps to prevent drive train shock loads.
An acceleration ramp and a deceleration ramp can be set independently with the ramp-up
time and ramp-down time. This enables a controlled transition at setpoint changes.
The reference value for calculating the ramps from the ramp-up and ramp-down times of the
speed ramp generator is the speed specified in the "Speed" dialog box.
Note
On principle, the ramp-up and ramp-down times of the ramp generator in the setpoint
channel of the drive should be set only so fast that, in case of accelerations and
decelerations, the motor speed can track the setpoint without damaging the machine. This
ensures optimal functioning of the speed controller precontrol.
Procedure
You enter the settings for the speed ramp generator under "Parameters" > "Parameters" >
"Ramp generator":
● Rampup time
● Ramp-down time
● Speed
Note
The F-TM ServoDrive uses the 3 values entered to form the values relative to 10,000 rpm
"Speed ramp generator ramp-up time" (p1120) and "Speed ramp generator ramp-down time"
(p1121).
When using the GSD file, directly enter the values relative to 10,000 rpm.
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Equipment Manual, 02/2020, A5E47579503-AA
F-TM ServoDrive