Siemens SINAMICS DCM Manual page 517

Descriptions of functions
10.11 Setpoint channel
10.11 Setpoint channel
10.11.1 Ramp-function generator
Table 10- 45 Definitions
Ramp-up
Return flow
Transition from negative to
positive speeds
Ramp-up time
Ramp-down time
518
Acceleration from lower positive to higher positive speeds (e.g. 10% to 90%) or from
lower negative to higher negative speeds (e.g. -10% to -90%)
Deceleration from higher positive to lower positive speeds (e.g. 90% to 10%) or from
higher negative to lower negative speeds (e.g. -90% to -10%)
E.g. from -10% to +50%:
From -10% to 0 = ramp-down and
From 0 to +50% = ramp-up, and vice versa
The amount of time the ramp-function generator requires, when initial rounding and final
rounding = 0 and an input variable jump from 0 to 100% or 0 to -100% is performed, for
passing through the 100% range at the ramp-function generator output. For smaller
jumps at the input, the rise at the output is performed at the same rate.
The amount of time that the ramp-function generator requires, when initial rounding and
final rounding = 0 and an input variable jump from 100% to 0 or -100% to 0 is performed,
for passing through the 100% range at the ramp-function generator output. For smaller
jumps at the input, the rise at the output is performed at the same rate.
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SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001