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32-10 Rotational Direction
Normally, a positive reference value initiates a positive change of
the position. If not, the reference value can be reversed
internally.
Option:
Function:
[4]
User Units and
Reference
reversed (–2)
The sign of the reference value is
reversed internally; in addition, the sign
of the user unit is negated as in option
[3].
32-11 User Unit Denominator
Range:
Function:
1
*
[1 to
1073741823]
All path information in motion commands is
made in user units and are converted to quad-
counts internally. By selecting these scaling
units correspondingly, it is possible to work
with any technical measurement unit (for
example mm). This factor is a fraction, which
consists of a numerator and denominator.
1 UU = P32-12 User Unit Numerator
P32-11 User Unit Denominator
Scaling determines how many quad-counts
make up a user unit. For example, if it is
50375/1000, then 1 UU corresponds to exactly
50.375 qc.
32-12 User Unit Numerator
Range:
Function:
1
*
[1 to
10737418237/
max. position
(UU)]
All path information in motion commands is
made in user units and is converted to quad-
counts internally. By selecting these scaling
units correspondingly, it is possible to work
with any technical measurement unit (for
example mm). This factor is a fraction, which
consists of a numerator and denominator.
1 UU = P32-12 User Unit Numerator
P32-11 User Unit Denominator
Scaling determines how many quad-counts
make up a user unit.
Example 1
Shaft or spindle
25 motor revolutions result in 1 spindle
revolution; gearing factor = 25/1
Encoder resolution (incremental encoder) =
500
Spindle gradient = 1 revolution of the spindle
= 5 mm
Scaling factor when working with 1/10 mm
resolution = 5 x 10 = 50
130BD771.10
25
1
500
25
50
1
qc =
1000
1
qc =
qc = 1 UU
4
10
4
Illustration 5.1 Example 1
Parameter
32-12 User Unit Numerator
= 1000
32-12 User Unit Numerator
Range:
Function:
Parameter
32-11 User Unit Denominator
= 1
Example 2
Cylinder
Gear factor = 5/1
Encoder resolution (incremental encoder) =
500
One revolution of the cylinder is 360 degrees.
Work with a resolution of 1/10 degrees, which
means that 1 revolution of the cylinder is
divided into 3600 units.
Scaling factor = 3600
130BD772.10
5
1
500
5
3600
3600
qc =
qc = 1 UU
25
9
qc = 1 UU =
Parameter 32-12 User Unit Numerator
Parameter 32-11 User Unit Denominator
4
500
4
Illustration 5.2 Example 2
Parameter
32-12 User Unit Numerator
= 25
Parameter
32-11 User Unit Denominator
= 9
32-14 Encoder 2 node ID
Range:
Function:
127
*
[1-127]
Enter the feedback CAN encoder node ID.
32-15 Encoder 2 CAN Guard
Feedback CAN encoder guardians can be enabled or disabled.
Option:
Function:
[0]
*
Off
Default setting. No monitoring.
[1]
On
Feedback CAN encoder is monitored.
5.6.2 32-3* and 32-4*, Encoder 1
Parameters
The 32-3* and 32-4* parameters configure the interface for
encoder 1.
32-30 Incremental Signal Type
Specifies the type of incremental encoder connected to
Encoder 1
interface
(X56 and X62 if a CAN encoder is used).
Option:
Function:
[0]
None
No incremental encoder is
connected.
[1]
*
RS422 (5 V TTL)
A digital incremental encoder with
an interface according to RS-422 is
connected.
[3]
CAN encoder
An encoder with a CAN interface is
connected.
Commissioning
Operating Instructions
MG33R302
Danfoss A/S © 04/2014 All rights reserved.
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Содержание MCO 351
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