Remote Programming

The gray wire of the SLE10 Expert may be connected to a remote switch or

process controller to disable or enable the push button (four-pulse) or to

program the sensor (single-pulse) through TEACH mode. Remote

programming may be done for both the Static and Dynamic TEACH

procedures.

A remote programming switch is connected between the gray wire and dc

common (see the wiring diagram). The switch may be either a normally-

open contact, or an open-collector NPN transistor with its emitter

connected to dc common.

Programming is accomplished using a specified sequence of input pulses.

The duration of each pulse is defined as: 0.04 seconds < T < 0.8 seconds.

The required spacing between adjacent pulses in a sequence (a “four-

pulse”) is also: 0.04 < T < 0.8 seconds. The timing diagrams illustrate the

input requirements.

To pulse the TEACH line, momentarily connect the remote wire to dc

common (no press-and-hold procedure is required to enter TEACH mode).

This is the equivalent of a click when using the sensor TEACH push button.

Single-

Pulse

Input

Wait > 0.8 seconds

before next input

0.04 sec < T < 0.8 sec

T

Four-

Pulse

Input

Wait > 0.8 seconds

before next input

T

T

T

T

T

T

T

Figure 3. Timing Programs for Remote Programming

Enable/Disable the Push Button

When remote programming is used exclusively, it may be beneficial to disable the push button on the SLE10 Expert to increase the security of the

settings. The push button can be enabled and/or disabled via the remote line only. If the push button is disabled, TEACH mode cannot be accessed from

the push button.

Pulse the Remote TEACH line four times (four-pulse) to enable or disable the push button.

Static TEACH

Determine the Output ON and OFF Conditions

The two sensing conditions may be presented in either order. The condition presented first is the condition for which the outputs will energize (the

Output ON target).

Set Sensitivity

Sensitivity is automatically set (and optimized) when teaching the sensor the ON and OFF conditions. When the push button is clicked, the sensor

samples each sensing condition and registers it into memory. After the second sensing condition is registered, the SLE10 Expert automatically sets the

sensitivity to the optimum value for the application, and then returns to RUN mode.

LED Indicators

The two LED indicators (bi-color green/red and amber) operate as follows in TEACH Mode:

Red (TEACH Mode)

Lights when the sensor sees its modulated light source; pulse rate is proportional to the received light signal strength during TEACH

programming

Amber (Output)

ON to indicate TEACH output ON condition

OFF to indicate TEACH output OFF condition

Signal Strength Indicator

increases (during programming). This feature simplifies accurate alignment during TEACH mode, and gives a relative indication of sensing contrast

between the light and dark conditions.

Static TEACH

1. Enter TEACH mode.

Method

Action

Result

Push Button2

Press and hold the TEACH button until the bi-color (green/red) indicator begins to flash

red, or turns OFF (longer than two seconds).

Indicator Status

Amber: ON

Red: Pulses to indicate relative received signal

strength.

2 The sensor returns to RUN mode if the first TEACH condition is not registered within 90 seconds. TEACH mode may be cancelled before either condition #1 or #2

by pressing the button for longer than or equal to 2 seconds. If push button is pressed for 2 seconds or longer, sensor automatically returns to RUN mode.

SLE10 Expert Series Slot Sensor

P/N 60378 Rev. A

www.bannerengineering.com - Tel: +1-763-544-3164

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