Siemens SINAMICS G120 CU230P-2, Operating Instructions Manual, Page: 96 / 346

Adapting the terminal strip
5.5 Analog outputs
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
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Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
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 5- 8 Parameters for the scaling characteristic
Parameter Description
p0777 X coordinate of the 1st characteristic point [% of P200x]
P200x are the parameters of the reference variables, e.g. P2000 is the reference
speed.
p0778 Y coordinate of the 1st characteristic point [V or mA]
p0779 X coordinate of the 2nd characteristic point [% of P200x]
p0780 Y coordinate of the 2nd characteristic point [V or mA]
You must define your own characteristic if none of the default types match your particular
application.
Example:
The inverter should convert a signal in the value range -100 % … 100 % into a
6 mA … 12 mA output signal via analog output 0.
Parameter Description
p0776[0] = 2 Analog output, type
Define analog output 0 as current output.
After changing p0776 to the value 2, the inverter sets the scaling characteristic parameters to the
following values:
p0777[0] = 0.0; p0778[0] = 4.0; p0779[0] = 100.0; p0780[0] = 20.0
Adapt the characteristic:
p0777[0] = 0.0
p0778[0] = 6.0
Analog output, characteristic (x
1
, y
1
)
0.0 % corresponds to 6 mA
p0779[0] = 100.0
p0780[0] = 12.0 Analog output, characteristic (x
2
, y
2
)
100 % corresponds to 12 mA
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