Load Feedback page

The
Load Feedback
 page contains information from the feedback device that is directly coupled to the load-side of a mechanical transmission or actuator. Use the
Load Feedback
 page to enter load feedback-device information.
The
Load Feedback
 page is available when
Feedback Configuration
 on the
General
 page is set to
Load
 or
Dual Feedback
.
TIP: The controls on this tab are available when the controller is offline.
TIP:
To open the Load Feedback page:
  1. In the
    Controller Organizer
    , expand the
    Motion Groups
     folder, and double-click an axis.
  2. From the
    Axis Properties
     dialog box, in
    Categories
    , select
    Load
    Feedback
    .
Parameter
Description
Device Function
Displays the feedback device function as Load-Side Feedback.
Feedback Channel
Displays the CIP motion feedback channel as Channel 2.
Type
Selects the type of feedback device.
Each feedback device has different configuration parameters.
The following is a list of available types:
Integrated
SSI Sine/Cosine
SSI AqB
BiSS Sine/Cosine
Not Specified
Digital AqB
Digital AqB (With UVW)
Digital Parallel (Abs)
Sine Cosine
Sine Cosine (With UVW)
Hiperface
EnDat Sine/Cosine
EnDat Digital
Resolver
SSI Digital
LDT
Hyperface DSL
BiSS Digital
Tamagawa Serial
Stahl SSI
Not Specified
 is the default parameter.
Units
Select the required unit. The available units are:
  • Meter
  • Rev
Parameters
Opens the
Motion Axis Parameters
 page to modify existing or additional parameters.
Tip:
 The
Parameter List
 page may contain more attributes than the associated page. In some cases, attributes that display on the
Parameter List
 page do not display on the associated page.
Device Type parameters
The device
Type
parameters display when device
Type
is set to any value, except
Not Specified
.
Tip:
 The device type determines which parameters appear on the page. Parameters not supported by the device type are hidden.
Cycle Resolution
Enter the cycle resolution for the feedback device.
Cycle Interpolation
Enter the interpolation factor for the feedback device. Valid values include:
  • 4
  • 2
  • 1
Effective Resolution
Displays the effective resolution of the feedback device. This value is calculated by multiplying the
Cycle Resolution
 with the
Interpolation Factor
.
Startup Method
Select the startup method for the feedback device. This parameter determines how the device applies the feedback count value during drive startup. Valid values include:
  • Incremental
     - The device zeros the feedback count accumulator at power-up.
  • Absolute
     - The device initializes the feedback count accumulator at power-up to the absolute feedback position value read from the feedback device. Digital AqB and Sine/Cosine Feedback Types do not support Absolute startup.
Commutation Offset
Enter a value for the commutation offset.
Tip:
This value and the
Commutation
 button only display for feedback devices that support commutation offset.
Test Commutation
Opens a dialog box to perform a commutation test (Hookup Test) on the device.
Data Code Type
Select a data type code for the feedback device. The available options are:
  • Gray Code
  • Binary Code
Data Length
Enter the length of the data in bits.
Absolute Turns/Absolute Length
For a rotary motor, enter the absolute number of turns for the device to make.
For a linear motor, enter the absolute length of the device.
Transformation Ratio
Enter the transformation ratio of the feedback device.
Feedback Ratio
Enter the feedback ratio between the Load Feedback and the Motor Mounted Feedback.
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