Signal Overview, Function Diagrams And Important Parameters - Siemens SINAMICS S120 Function Manual

Extended setpoint channel
4.5 Ramp-function generator
n
act
n
RFG
RFG output
(Speed setpoint)
t t
1 2
Figure 4-12 Extended RFG tracking
The additional torque starts to act at the times t
actual speed value. This causes the drive to be accelerated to the speed setpoint on the
specified ramp-function generator ramp when the torque falls again to M
2 versions can be used for the extended ramp-function generator tracking:
● The RFG tracking is always active (p1151.1 = 1). For load surges, the output of the ramp-
function generator is tracked to the actual value. The tracking ends for setpoint zero.
● The RFG tracking is always active (p1151.2 = 1). For load surges, the output of the ramp-
function generator is tracked to the actual value. The tracking continues for a polarity
change.
4.5.2

Signal overview, function diagrams and important parameters

Signal overview (see SINAMICS S120/S150 List Manual)
● Control signal STW1.2 OFF3
● Control signal STW1.4 Enable ramp-function generator
● Control signal STW1.5 Start/stop ramp-function generator
● Control signal STW1.6 Enable setpoint
● Control signal STW2.1 Bypass ramp-function generator
Function diagrams (see SINAMICS S120/S150 List Manual)
● 3001
● 3060
● 3070
● 3080
78
Actual speed value
t
3
Setpoint channel overview
Setpoint channel - Basic ramp-function generator
Setpoint channel - Extended ramp-function generator
Setpoint channel - Ramp-function generator selection, status word, tracking
M
Overload torque
UEL
M Load torque
L
t
4
and t and the RFG output is tracked to the
1 3
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
M
UEL
M
L
t
(t and t ).
L 2 4
Drive functions