Siemens SINAMICS S120 Function Manual page 63

Figure 2-11 Ramp function generator tracking
Without ramp function generator tracking
● p1145 = 0
● Drive accelerates until t2 although setpoint < actual value
With ramp function generator tracking
● At p1145 > 1 (values between 0 and 1 are not applicable), ramp function generator
● t1 and t2 almost identical
Function diagrams (see SINAMICS S List Manual)
● 1550 Setpoint channel
● 3060 Simple ramp function generator
● 3070 Extended ramp function generator
● 3080 Ramp function generator selection, status word, tracking
Signal overview (see SINAMICS S 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
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
tracking is activated when the torque limit is approached. The ramp function generator
output thereby only exceeds the actual speed value by a deviation value that can be
defined in p1145.
Extended setpoint channel
2.9 Ramp-function generator
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