Santerno Sinus Penta - Inputs for References from Optional Board; Scaling Analog Inputs XAIN4, XAIN5

SINUS PENTA
PROGRAMMING GUIDE
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31. INPUTS FOR REFERENCES FROM OPTIONAL BOARD
This menu relates to ES847 I/O expansion board. It can be viewed only if R023 (I/O board setting) = XAIN (see the
EXPANSION BOARD CONFIGURATION MENU).
In addition to the analog inputs located on the control board, a current analog input and a voltage analog input can be
acquired if ES847 is fitted.
31.1. Scaling Analog Inputs XAIN4, XAIN5
NOTE
Please refer to the Sinus Penta’s Motor Drives Accessories – User Manual for hardware details
about analog inputs.
Two analog inputs (XAIN4, XAIN5) are located on ES847 control board.
XAIN4 is a current input and XAIN5 is a voltage input. They are both bipolar analog inputs (–10V ÷ +10V or –20mA ÷
+20mA).
For both analog inputs, parameters P390 to P399 allow setting the type of signal to be acquired, offset compensation (if
any), scaling to obtain a speed reference or a torque reference, the signal filtering time constant.
Parameter P393 sets the offset of the input analog signal (if P393=0 offset is zero), while parameter P394 defines the
filtering time constant (factory setting: P394 = 100ms).
The voltage signal can be bipolar (–10V
÷
+10V) or unipolar (0V
÷
+10V).
The current signal can be bipolar (–20mA
÷
+20mA), unipolar (0mA
÷
+20mA) or can have a minimum offset (4mA
÷
20mA).
The user will set each analog input mode in parameters P390, P395.
Table 66: Analog input hardware mode
Type / Terminals
Name
Type
Parameter
Differential input / Pin 11,12
XAIN4
±10V Input
P390
Differential input / Pin 13,14
XAIN5
±20mA Input
P395
NOTE Configurations different from the ones stated in the table above are not allowed.
Scaling is obtained by setting the parameters relating to the linear function for the conversion from the value read by
the analog input to the corresponding speed/torque reference value.
The conversion function is a straight line passing through 2 points in Cartesian coordinates having the values read
by the analog input in the X-axis, and the speed/torque reference values in the Y-axis. The speed/torque reference
values are multiplied by the reference percent parameters.
Each point is detected through its two coordinates.
The ordinates of the two points are the following:
the value of Speed_Min (or Trq_Min for the torque reference) multiplied by the percentage set with P391a/P396a for
the first point; the value of Speed_Max (or Trq_Max for the torque reference) multiplied by the percentage set with
P392a/P397a for the second point.
Speed_Min depends on the selected motor: see parameter C028 (motor 1), C071 (motor 2), or C114 (motor 3).
Trq_Min depends on the selected motor: see parameter C047 (motor 1), C090 (motor 2) or C133 (motor 3).
Speed_Max depends on the selected motor: see parameter C029 (motor 1), C072 (motor 2) or C115 (motor 3).
Trq_Max depends on the selected motor: see parameter C048 (motor 1), C091 (motor 2), or C134 (motor 3).
The X-axis values of the two points depend on the analog input:
XAIN4 Input:
Parameter P391 is the X-axis of the first point; parameter P392 is the X-axis of the second point.
XAIN5 Input: