Siemens SIMATIC ET 200pro - 8.3.3 Features

Setting functions
8.4 Setpoint calculation
SIMATIC ET 200pro FC-2 converter
114 Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
Table 8- 10 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.
Example
In the following example, the higher-level control sets the ramp-up and ramp-down times of
the inverter via PROFIBUS.
Figure 8-10 Example for changing the ramp-function generator times in operation
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.
See also section: PROFIdrive profile for PROFIBUS and PROFINET (Page 85).
● The controller sends the scaling value to the inverter in PZD 3.
Procedure
To interconnect the scaling of the ramp-up and ramp-down times with PZD receive word 3
from the fieldbus in the inverter, proceed as follows:
1. Set p1138 = 2050[2].
This means that you have interconnected the scaling factor for the ramp-up time with
PZD receive word 3.
2. Set p1139 = 2050[2].
This means that you have interconnected the scaling factor for the ramp-down time with
PZD receive word 3.
The inverter receives the value for scaling the ramp-up and ramp-down times via PZD
receive word 3.
You will find further information in the Internet at: Manuals and technical support (Page 248).