Method

Action

Result

Remote Input3

N/A

The sensor is ready for the first sensing

condition.

2. TEACH Condition #1 (Output ON state).

Method

Action

Result

Push Button

a. Present the first sensing condition to the sensor.

b. Single-click the TEACH button.

Indicator Status

Amber: OFF

Red: Pulses to indicate relative received signal

strength.

Remote Input

a. Present the first sensing condition to the sensor.

b. Single-pulse the remote input.

T

function is indicating signal strength)

Amber: Flash briefly, then turn off

3. TEACH Condition #2 (Output OFF state)

Method

Action

Result

Push Button

a. Present the second sensing condition to the sensor

b. Single-click the TEACH button.

TEACH Accepted

The sensor returns to RUN mode.

TEACH Not Accepted

The sensor returns to TEACH Condition #1.

Green: ON (or flashes if signal is close to the

switching threshold).

Amber: OFF, until the sensing condition

changes.

Remote Input

a. Present the second sensing condition to the sensor.

b. Single-pulse the remote input.

T

TEACH Accepted

The green indicator turns on and the sensor

returns to RUN mode

TEACH Not Accepted

The amber indicator turns on and the red AID

indicator remains active, indicating that the

sensor is waiting for the first TECH condition to

be taught again. (Run mode begins a few

seconds after the end of TEACH mode.)

Dynamic TEACH

Dynamic TEACH is a method of setting the sensor's sensitivity while the object to be sensed is in motion.

Typical applications are label sensing and small parts detection. In a label application, web flutter may change the amount of light passing through the

label and its backing material. Dynamic TEACH will sense this variation and adjust the sensitivity to account for it.

In a small parts detection application, alignment of the object to the sensor's effective beam may make Static TEACH difficult. In this case, Dynamic

TEACH will allow you to pass individual or multiple parts through the beam; the sensor then will detect them and set the sensitivity automatically.

Determine the Output ON and OFF Conditions

Dynamic TEACH is used for optimizing the sensor's sensitivity and will not configure the output ON and OFF conditions. A Static TEACH must be used first

to change the output ON and OFF conditions, if needed. If the outputs are configured properly for your installation, Dynamic TEACH may be performed

as needed without reverting back to Static TEACH.

Set Sensitivity

Sensitivity is automatically set and optimized when the sensor is taught dynamically. When the push button is depressed and held, the sensor continues

to sample events and registers them into memory. Upon release of the button, the sensor chooses the optimum setting for the application and then

returns to RUN mode.

Dynamic Sampling Rate

When using Dynamic TEACH to sample an application for programming, it is important to consider the speed of the object being sensed. The sensor's

sampling rate during this set-up process is much slower than its response time in RUN mode. Once sampling is complete and the sensor returns to RUN

mode, sensor response time returns to its original value.

Use the following formula to calculate the target object speed for Dynamic TEACH sampling:

Maximum speed of object as it passes the sensor = [Width of the object (in inches) – effective beam (0.07 in)] ÷ Dynamic Sampling Rate (0.009

For example, for an object 0.125 inches wide, the maximum object speed is:

3 To exit Static TEACH without updating, hold the Remote TEACH line low (longer than 2 seconds) until the green indicator goes ON, before teaching the second

target.

4 The Dynamic Sampling Rate for high-speed models ("Y" model suffix) is 8 milliseconds (0.008 seconds) .

SLE10 Expert Series Slot Sensor

4

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