Sensor Limits Setup
Push-button
First, during installation make sure the
sensor face is as parallel as possible
to the surface of the material being de-
tected.
To set the limits, simply place an ob-
ject at the desired distance from the
sensor for one limit and press the
LIMITS push-button once. This sets the
first limit and switches the sensor out-
put to an inactive state during the limit
setup. While the LIMITS push-button is
depressed, the multicolored LED lo-
cated on top of the sensor, is amber.
Upon release of the push-button, the
LED flashes amber indicating that the
second limit needs to be set within 30
seconds. Place an object at the desired
position for the second limit and press
the LIMITS push-button once. Again
while the push-button is depressed, the
LED is amber. Upon release of the
push-button, the LED flashes amber
momentarily and then turns green to
indicate acceptance of both limits. If 30
seconds elapse before the second limit
is set, the limits revert back to the pre-
vious settings.
At the same time, the sensor output
switches from the inactive to the ac-
tive state, placing the sensor into the
operational mode, ready to use. When
power is off or interrupted, the limits
are retained in a nonvolatile memory.
If in setting either limit the echo from
the object is too weak or distorted, the
LED flashes RED for 10 seconds (or
until the button is pressed again) indi-
cating the limit setting was not accepted
by the sensor. Attempt to set both lim-
its again, being careful to keep the ob-
ject surface parallel to the face of the
sensor.
Minimum allowed distance between
any two setup limits is 13 mm (1/2").
The multicolored LED flashes RED af-
ter the press and release of the LIM-
ITS push-button for the second limit
setting if the distance between the limit
settings is less than 13 mm. The multi-
colored LED continues flashing RED ei-
ther until the LIMITS push-button is
pressed and released once for the first
limit setting or until 10 seconds have
elapsed. Pressing and releasing the
LIMITS push-button once reinitiates the
limit setup sequence. If 10 seconds
elapse before the LIMITS push-button
is pressed and released for the second
limit setup, the limits revert back to the
previous settings.
A special feature provides an auto-
matic 13 mm (1/2") window limits setup
function. Simply place an object within
the sensing range of the sensor and
press the LIMITS push-button twice in
succession without moving the object.
A limit is set on a line 1/4" in front and
back of the object surface nearest the
sensor.
Multicolored LED Indicator
During Limit Setup
Prior to pressing LIMITS push-
button:
• Off - Sensing no object or
object is outside of the
sensing range
• Red - Sensing an object out
side the set limits
• Green - Sensing an object
inside the set limits
LIMITS push-button depressed for
first time:
• Amber - sensing a good object
surface condition
• Red - Sensing no object or a
poor object surface condition
LIMITS push-button released for
first time:
• Flashing Amber - First limit
accepted,waiting for second
limit
• Flashing Red - First limit not
accepted; retry setting limit
LIMITS push-button depressed for
second time:
• Amber - Sensing a good
object surface condition
• Red - Sensing no object or a
poor object surface condition
LIMITS push-button released for
second time:
• Green or Red - Second limit
accepted
• Green or Amber - Second
limit accepted
• Flashing Red - Second limit
not accepted; retry setting
both limits
Multicolored LED Indicator
in Operational Mode
•
Off - Sensing no object or
object is outside the sensing
range
• Red -
Sensing as object
outside the set limits
• Green -
Sensing an object
inside the set limits
Red LED Indicator in
Operational Mode
The red LED serves as a visual
indicator for the sensor output. The
LED is illuminated when the output
is in an active (ON) state. Note:
Indicator is not provided on all
models.
Electrical Wiring
Sensor wires must be run in
conduit free of any AC power or
control wires.
4-49
View of Plug on Connector Style
Sensor
BLACK 1
NPN
ORANGE
3
Sync/Gate
WHITE 5
PNP
BLUE 2
Common
BROWN 4
+ 12 to 24 VDC
Gate-controlled Sensing
Gate-controlled sensing is another
unique feature that enables this sensor
to perform periodic sensing of multiple
objects or locations. Depending on the
application, one or a set of these sen-
sors is used with an isolated switching
device for preventing possible false
sensor outputs due to changing fore-
ground object conditions. Devices such
as SUPERPROX
®
sensors, program-
mable limit switches or other proximity
sensor switches with an open-collec-
tor, current sinking output are typically
used to perform the isolated gate-switch
or “Master” sensor function.
Gate-controlled sensing is accom-
plished by connecting the external con-
trol wire lead from each sensor to the
DC supply voltage common through the
isolated switch as shown in the illus-
tration on the next page. Each con-
nected sensor must operate with setup
Switch 4 in the “Slave” position. In this
configuration, the sensors simulta-
neously transmit and receive ultrasonic
energy only when the gate device is
switched to the ON or CLOSED state.
When the gate device is switched back
to the OFF or OPEN state, the sensor
outputs are latched from changing state
until the next gate-switch cycle.
SUPERPROX® PROXIMITY
SENSORS
Sensor Wire colors
Cable Connector
Style
Style
(+)12 to 24
VDC
RED
BROWN
NPN/Sinking Output
WHITE
BLACK
PNP/Sourcing Output
BROWN WHITE
Sync/Gate Control
GREEN ORANGE
DC Common
BLACK
BLUE
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
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