Emerson Epsilon EP Drive 400518-01 Manual de instalación descargar pdf (Pagina 19)

Operational Overview

Figure 7: Basic Home Function, Example

The figure above show a basic home function using a ball screw. This example uses most of the setup features in the

PowerTools Pro Home view.

Home Sequence

1. Back off the sensor, if on the sensor. (This step is optional).

2. Move to the external home sensor to establish a home reference point.

3. Next it will move to the Offset position.

4. Then the command and feedback positions are set to the value entered into the End of Home Position.

Homing to the motor’s encoder marker will establish the most accurate and repeatable home position. This method will

position the motor relative to the location of the rising edge of the encoder marker pulse. Most applications will use a sensor

and marker to find an accurate home position in the vicinity of the home sensor.

Several parameters affect how the Home function operates. Each of these parameters are explained in detail on the following

pages.

Note

The Home function will NOT be initiated when any other motion command is in progress.

Establishing a Home Reference Position

The first step in setting up a home is to select the desired home reference type. The Home Reference type selected determines

how the Home Reference Position is established. PowerTools Pro allows selection of one of three different Home Reference

types: Sensor, Marker, or Sensor then Marker.

Sensor

Selecting Sensor means the rising edge of the Home Sensor input function is used to establish the home reference position.

Figure 8: Sensor Home Reference Position

NT Motor

with Encoder

Gear Reducer

Carriage

External

Home Sensor

Home Offset

Distance

Sensor Point

Direction

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 239 240

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Emerson Epsilon EP Drive 400518-01 Manual de instalación Pagina 19