Siemens sinamics G120 Operating Instructions Manual page 162

Advanced commissioning
6.2 Inverter control
Parameters p0777 ... p0780 are assigned to an analog output via their index, e.g.
parameters p0777[0] ... p0770[0] belong to analog output 0.
Table 6- 4
Parameter
p0777
p0778
p0779
p0780
Setting the characteristic
You must define your own characteristic if none of the default types match your particular
application.
Example:
Via analog output 0, the inverter should convert a signal in the value range 0 % ... 100 %
into an output signal 6 mA ... 12 mA.
Procedure
Defining the function of an analog output
You define the analog output function by interconnecting parameter p0771 with a connector
output of your choice. Parameter p0771 is assigned to the particular analog output via its
index, e.g. parameter p0771[0] is assigned to analog output 0.
Table 6- 5
CO
r0021
r0024
r0025
A complete list of the connector outputs is provided in the List Manual.
162
Parameters for the scaling characteristic
Description
x coordinate of the 1st Characteristic point [% of p200x]
p200x are the parameters of the reference variables, e.g. p2000 is the reference
speed.
y coordinate of the 1st Characteristic point [V or mA]
x coordinate of the 2nd Characteristic point [% of p200x]
y coordinate of the 2nd Characteristic point [V or mA]
Connector outputs (CO) of the inverter (selection)
Meaning
Actual frequency
Output actual frequency
Output actual frequency
Set the following parameters to set the characteristic to
match the example:
1. Set p0776[0] = 2
This defines analog output 0 as a current output.
2. Set p0777[0] = 0.0 (x1)
3. Set p0778[0] = 6.0 (y1)
4. Set p0779[0] = 100.0 (x2)
5. Set p0780[0] = 12.0 (y2)
CO Meaning
r0026 Actual DC-link voltage
r0027 Output current
Operating Instructions, 01/2016, FW V4.7 SP6, A5E31759476B AE
Converter with CU250S-2 Control Unit