Siemens SINAMICS G120D - Page 134

Setting functions
8.4 Setpoint calculation
Converter with control units CU250D-2
134 Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
Basic ramp-function generator
When compared to the extended ramp
-
function generator, the basic ramp
-
function generator has no rounding
times.
Table 8- 13 Parameters for setting the ramp-function generator
Parameter
Description
p1115 = 0
Ramp-function generator selection
(factory setting: 1)
Select ramp-function generator:
0: Basic ramp-function generator
1: Extended ramp-function generator
p1120
Ramp-function generator, ramp-up time
(factory setting: 10 s)
Accelerating time in seconds from zero speed up to the maximum speed p1082
p1121
Ramp-function generator, ramp-down time
(factory setting: 10 s)
Braking time in seconds from the maximum speed down to standstill
p1135
OFF3 ramp-down time
(factory setting: 0 s)
The quick stop (OFF3) has its own ramp-down time.
Changing the ramp-up and ramp-down times in operation
The ramping up and down time
of the ramp
-function generator
can be changed during
operation. The scaling value
can come e.g. from the field
bus.