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SPX advanced – description of parameters
SPX ADVANCED APPLICATION MANUAL
SVCH0203—October 2017 www.eaton.com
Code
ID
Parameter
Notes
P1.4.5.6
1037
Analog input 3, minimum value “AI3 scale min”
P1.4.5.7
1038
Analog input 3, maximum value “AI3 scale max”
P1.4.6.6
1039
Analog input 4, minimum value “AI4 scale min”
P1.4.6.7
1040
Analog input 4, maximum value “AI4 scale max”
These parameters define the range for the controlled parameters. All the values
are considered to be integers i.e. when controlling the Field Weakening Point (as in
example) you also need to set numbers for decimals. E.g. FWP 100.00 needs to be set
as 10000.
P1.4.5.8
1509
AI3 controlled ID “AI3 control. ID”
P1.4.6.8
1510
AI4 controlled ID “AI4 control. ID”
These parameters define the controlled parameter.
Example: You want to control motor field weakening point voltage through an analog
input from 70.00 % to 130.00 %.
Set Scale min to 7000 = 70.00 %
Set Scale max to 13000 = 130.00 %
Set Controlled ID to 603 (Voltage at field weakening point)
Al3/Al4 Output = Field weakening point voltage
ID603
13000
Scale
Max
7000
Scale
Min
80 %
Custom
Max
40 %
Custom
Min
0 %
100 %
Analogue
Input
Now analog input 3 signal 0 V to 10 V (0 mA to 20 mA) will control the field weakening
point voltage between 70.00 % - 130.00 %. When setting the value remember that
decimals are handled as integers.
5.4.4.1 Analog input to any parameter
This function allows control of any parameter by using an
analog input. The parameter selects what the range of control
area and the ID number for the parameter that is controlled.
