Danfoss VLT AutomationDrive FC 301 Programming Manual page 263

Parameter Descriptions
17-61 Feedback Signal Monitoring
Select which action the frequency converter should take if a
faulty encoder signal is detected. The encoder function in
parameter 17-61 Feedback Signal Monitoring is an electrical check
of the hardware circuit in the encoder system.
Option: Function:
[0] Disabled
[1] Warning
*
[2] Trip
[3] Jog
[4] Freeze Output
[5] Max Speed
[6] Switch to
Open Loop
[7] Select Setup 1
[8] Select Setup 2
[9] Select Setup 3
[10] Select Setup 4
[11] Stop & Trip
[12] Trip/Warning
[13] Trip/Catch
3.17.5 17-7* Position Scaling
Parameters in this group define how the frequency
converter scales and handles the position values.
17-70 Position Unit
Select the physical unit for showing the position values on the
LCP.
Option: Function:
[0] pu Position unit.
*
[1] m Meters.
[2] mm Millimeters.
[3] inc Increments.
[4] ° Degrees.
[5] rad Radian.
[6] % Percent.
[7] qc Quad count, which is ¼ of an
encoder pulse when using
quadrature encoder signal.
M0013101
Programming Guide
17-71 Position Unit Scale
Array [2]
The scaling function multiplies the readout values by 10
x is the value of this parameter. For example, if x = 2, the value 5
is shown as 500.
The elements of the array are:
•
•
Range:
0
*
17-72 Position Unit Numerator
This parameter is the numerator in the equation which defines
the relation between 1 motor revolution and physical movement
of machine.
Position unit =
Example:
Consider a turn table application. The motor makes 10
revolutions when the table makes 1 revolution. The position unit
is a degree. For this set-up, enter the following values:
•
•
Set the physical unit for position values in
parameter 17-70 Position Unit.
Range:
1024
*
17-73 Position Unit Denominator
Range:
1
*
17-74 Position Offset
Range:
0
*
Danfoss A/S © 10/2019 All rights reserved.
Index 0 is the scaling factor for readout and settings of
position values in parameters or in a fieldbus. Index 1
contains exceptions.
Index 1 is the scaling factor for readout of position
error (parameter 16-08 Position Error) and for the value
of parameter 3-08 On Target Window.
Function:
[-3 - 3 ] Enter the scaling factor for the
position values.
Par . 17 − 72
× Motor revolutions
Par . 17 − 73
Parameter 17-72 Position Unit Numerator = 360
Parameter 17-73 Position Unit Denominator = 10
Function:
[-2147483648
-
2147483647 ]
Function:
[-2147483648 See parameter 17-72 Position Unit
- Numerator.
2147483647 ]
Function:
[-2147483648 Enter the absolute encoder position
- offset. Use this parameter to adjust
2147483647 ] the 0 position of the encoder
without physically moving the
encoder.
Set the physical unit for position
values in parameter 17-70 Position
Unit.
x , where
3 3
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