Siemens SINAMICS G120 Operating Instructions Manual page 241

Table 8- 21
Parameter
p1138
p1139
Example
In the following example, the higher-level control sets the ramp-up and ramp-down times of
the inverter via PROFIBUS.
Figure 8-19
Preconditions
● You have commissioned the communication between the inverter and the control system.
● Free telegram 999 has been set in the inverter and in your higher-level control system.
● The controller sends the scaling value to the inverter in PZD 7.
Procedure
To interconnect the scaling of the ramp-up and ramp-down times with PZD receive word 7
from the fieldbus in the inverter, proceed as follows:
1. Set p1138 = 2050[6].
2. Set p1139 = 2050[6].
The inverter receives the value for scaling the ramp-up and ramp-down times via PZD
receive word 7.
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
Parameters for setting the scaling
Description
Up ramp scaling (factory setting: 1)
Signal source for scaling the up ramp.
Down ramp scaling (factory setting: 1)
Signal source for scaling the down ramp.
Example for changing the ramp-function generator times in operation
See also Section: Select telegram – procedure (Page 118).
This means that you have interconnected the scaling factor for the ramp-up time with
PZD receive word 7.
This means that you have interconnected the scaling factor for the ramp-down time with
PZD receive word 7.
Setting functions
8.4 Setpoint calculation
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