Siemens SINAMICS G120D Series - Page 144

Advanced commissioning
7.4 Setpoint calculation
Basic ramp-function generator
When compared to the extend
ed ramp-
function generator, the basic ramp
-
function generator has no rounding
times.
Table 7- 17 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.
Table 7- 18 Parameters for setting the scaling
Parameter
Description
p1138
Up ramp scaling
(factory setting: 1)
Signal source for scaling the acceleration ramp.
p1139
Down ramp scaling
(factory setting: 1)
Signal source for scaling the deceleration ramp.
Converter with control units CU240D-2
144 Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB