Siemens SINAMICS G120 Operations Instructions Page 98

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Adapt terminal strip
5.4 Analog inputs
Inverter with CU240B-2 and CU240E-2 Control Units
96 Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
Parameter Description
p0756[0] = 3 Analog input type
Define analog input 0 as current input
with wire break monitoring.
Set DIP switch for AI
0 to current input
("I"):
,8
After changing p0756 to the value 3, the inverter sets the scaling characteristic parameters to the
following values:
p0757[0] = 4,0; p0758[0] = 0,0; p0759[0] = 20; p0760[0] = 100
Adapt the characteristic:
p0761[0] = 6.0 Analog inputs wire break monitoring,
response threshold
p0757[0] = 6.0
p0758[0] = -100.0
Analog inputs, characteristic (x
1
, y
1
)
6 mA corresponds to -100 %
p0759[0] = 12.0
p0760[0] = 100.0
Analog inputs, characteristic (x
2
, y
2
)
12 mA corresponds to 100 %
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Define the significance of the analog input
You define the analog input function by interconnecting a connector input of your choice with
parameter p0755. Parameter p0755 is assigned to the particular analog input via its index,
e.g. parameter p0755[0] is assigned to analog input 0.
Table 5- 6 Connector inputs (CI) of the inverter (selection)
CI Significance CI Significance
p1070 Main setpoint p1522 Torque limit, upper
p1075 Supplementary setpoint p2253 Technology controller setpoint 1
p1503 Torque setpoint p2264 Technology controller actual value
p1511 Supplementary torque 1
A complete list of the connector inputs is provided in the List Manual.
Table 5- 7 Example:
$, r0755 755.0
p2253
Analog input 0 is the source for the speed setpoint.
Advanced settings
When required, you can smooth the signal, which you read-in via an analog input, using
parameter p0753.
For more information, see the parameter list and in the function block diagrams 9566 ff of the
List Manual.
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