Banner SL10 Series Slot Sensors - Manual (Page 6)

SLE10 Expert ™ Series Slot Sensor
6
Banner Engineering Corp. • Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 888.373.6767
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 hookup diagrams on page 9). 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
(Figure 3, right) illustrate the input requirements.
Locking Out (Disabling) 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 4 times (four-pulse) to enable or disable the push
button (see timing diagram, Figure 3).
Static TEACH Programming Using the Remote TEACH Line
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.
1. Position the “Output ON” condition and pulse the Remote TEACH line once. The
bi-color (green/red) indicator begins to flash red or turn OFF (the AID ™ function is
indicating signal strength) and the yellow Output indicator will flash briefly and then
go OFF.
2. Position the “Output OFF” condition and pulse the Remote TEACH line again. The
green indicator will turn ON and the sensor will return to RUN mode with the new
settings, if the contrast is adequate. If the contrast is not adequate, the yellow
indicator will turn ON and the red AID indicator will remain active, indicating that
the sensor is waiting for the first TEACH condition to be retaught. (RUN mode
begins a few seconds after the end of TEACH mode.)
NOTE: 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.
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