Gear Reducer

External

Home Sensor

Operational Overview

NT Motor with

Encoder

 

 

 

 

ity

 

 

 

c

 

 

o

 

 

 

l

 

 

 

 

e

 

 

 

 

V

 

 

 

e

 

 

om

 

 

ckoff

H

 

 

 

 

 

 

 

 

 

 

 

Ba

ion Mot

Carriage

Figure 51: Back Off Sensor Example

 

On

Off

On

Home

 

 

Sensor

 

 

 

Input

Off

 

 

 

 

 

 

Velocity

 

 

 

 

Back off

 

 

 

Sensor Move

 

 

 

 

Time

 

 

Start of Normal

 

 

 

Home Routine

 

 

 

 

Home Reference

 

 

 

Position

Figure 52: Back Off Sensor

In the figure on the previous page, the motor has restricted travel. In order to find the rising edge of the Home Sensor input, the motor must back away from the sensor until the Home Sensor Input Function deactivates, then move forward looking for the rising edge of the sensor. When backing-off of the sensor, the motor will move in the opposite direction of the Home Velocity.

53

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Image 65
Emerson P/N 400518-02 manual Gear Reducer External Home Sensor