6
Startup
Parameterizing the analog setpoint
Operating Instructions – Compact Extra-Low Voltage Drives
48
Each value pair represents a curve point in the diagram. The X values represent the
voltage (V) on the X-axis. The Y values represent the speed (min
-1
) on the Y-axis.
These values are clearly visible in the following figure. For the speed, only positive val-
ues are possible. The direction of rotation is specified similar to the fixed speed via the
respective input bit.
1000
3000
4000
2000
1
2
3
4
5
6
7
8
9
10
min
-1
V
Y4/Y3
Y2
Y1/Y0
X0
X1
X2
X3
X4
30635498507
The connection from curve
point
0 to curve
point
1 is always horizontal. This also ap-
plies to curve point 3 to curve point 4. All other connections are linear.
To implement this example, you have to adjust the parameters using the DCAShell
software. You find the parameters in the "Parameter application" section on the "Ex-
tended parameters" tab.
The value for X0 and X4 cannot be changed because X0 always stands for
0
V and
X4 always for
10
V. All other entries can be made according to the application. The
unit for parameters X1, X2, and X3 is digits (0 to 1023). The maximum
number
1023
stands for the maximum voltage of
10
V. The following table shows the parameters
with the respective values for the diagram. Enter the parameters in the DCAShell engi-
neering software according to the table and transfer the data by clicking the "Write"
button. The analog setpoints will then be input according to the profile shown in the
example.
No.
Parameters
Value
Unit
0xB
Speed characteristics_X1
102
Digits
0xC
Speed characteristics_X2
511
Digits
0xD
Speed characteristics_X3
818
Digits
0xE
Speed characteristics_Y0
500
min
-1
0xF
Speed characteristics_Y1
500
min
-1
0x10 Speed characteristics_Y2
3000
min
-1
0x11 Speed characteristics_Y3
4000
min
-1
0x12 Speed characteristics_Y4
4000
min
-1
0x13 Speed characteristics_X1_Hysteresis
0
Digits
0x14 Speed characteristics_X2_Hysteresis
0
Digits
0x15 Speed characteristics_X3_Hysteresis
0
Digits
26718014/EN – 11/2020
