Siemens 6RA8085-6DS22

Descriptions of functions
10.12 Setpoint channel
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
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Ramp-up time 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.
Ramp-down time 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.
Ramp-function generator mode of operation
①
= Ramp-function generator setpoint
②
= Ramp-function generator output
HLZ
= Rampup time
RLZ
= Ramp-down time
AR
= Initial rounding
ER
= Final rounding
1)
Transition from ramp-down incline to ramp-up incline
2)
Initial rounding makes the transition to final rounding even before the maximum ramp-down incline is reached.
3)
Only the last part of final rounding is performed here due to the ramp-function generator setpoint jump.
Figure 10-60 Ramp-function generator mode of operation