Siemens CU240B-2 Operating Instructions

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 6-7 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]
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
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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)
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 6-8 Connector outputs (CO) of the inverter (selection)
CO Meaning CO Meaning
r0021 Actual speed smoothed r0026 DC link voltage smoothed
r0024 Output frequency, smoothed r0027 Absolute actual current smoothed
r0025 Output voltage smoothed
A complete list of the connector outputs is provided in the List Manual.
Additional information is provided in the parameter list and in function diagram 2261 of the List
Manual.
Advanced commissioning
6.3 Adapt the default setting of the terminal strip
Converter with the CU230P-2 Control Units
208 Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English