1
Lateral Distance
(mm)
Target
Rotation
US18-PL-5-N03 Ultrasonic Sensors
Miniature Ultrasonic Sensors with TEACH-Mode Programming
• Fast, easy-to-use TEACH-Mode programming; no potentiometer adjustments
• Ultra-compact housing
• One discrete output: NPN or PNP, depending on model
• Two bi-colored status LEDs
• 4-pin Euro-style connector
• Wide operating range of -20° to +60° C
• Temperature compensation
• Configurable for normally open or normally closed operation
• Fast response time (15 milliseconds)
Models Sensing
Range
TEACH Option Conn. Supply Voltage
Output
US18-PL-5-N03-NH 50 mm to
500 mm
Integral push button or
remote TEACH
4-pin Euro-style
connector
12-30 VDC NPN
US18-PL-5-N03-PH PNP
US18 Effective Beam Pattern (Typical) US18 Maximum Target Rotation Angle
50
40
30
20
10
0
-10
-20
-30
-40
-50
0
100
200
300 400 500
15°
10°
5°
0
-5°
-10°
-15°
0 100 200 300 400 500
Sensing Distance
(mm)
Sensing Distance (mm)
2.5 mm
rod
8 mm
rod
50 mm x 50 mm
plate
WARNING: Not To Be Used for Personnel Protection
Never use this device as a sensing device for personnel protection. Doing so could lead to serious
injury or death. This device does not include the self-checking redundant circuitry necessary to allow its
use in personnel safety applications. A sensor failure or malfunction can cause either an energized or de-
energized sensor output condition.
2
PRINCIPLES OF OPERATION
Ultrasonic sensors emit one or multiple pulses of ultrasonic energy, which travel through the air at the speed of sound.
A portion of this energy reflects off the target and travels back to the sensor. The sensor measures the total time required for the
energy to reach the target and return to the sensor. The distance to the object is then calculated using the following formula: D = ct
÷ 2
D = distance from the sensor to the target
c = speed of sound in air
t = transit time for the ultrasonic pulse
To improve accuracy, an ultrasonic sensor may average the results of several pulses before outputting a new value.
Temperature Effects
The speed of sound is dependent upon the composition, pressure and temperature of the gas in which it is traveling.
For most ultrasonic applications, the composition and pressure of the gas are relatively fixed, while the temperature may fluctuate.
In air, the speed of sound varies with temperature according to the following approximation:
In metric units: Cm/s = 20 √273 + TC In English units:
Cft/s = 49 √460 + TF
Cm/s = speed of sound in meters per second Cft/s = speed of sound in feet per second
TC = temperature in °C TF = temperature in °F
Temperature Compensation
Changes in air temperature affect the speed of sound, which in turn affects the distance reading measured by the sensor.
An increase in air temperature shifts both sensing window limits closer to the sensor. Conversely, a decrease in air temperature shifts
both limits farther away from the sensor. This shift is approximately 3.5% of the limit distance for a 20° C change in temperature.
The US18 series ultrasonic sensors are temperature compensated This reduces the error due to temperature by about 90%.
The sensor will maintain its window limits to within 1.8% over the -20° to +60° C range.
NOTE:
• Exposure to direct sunlight can affect the sensor’s ability to accurately compensate for changes in
temperature.
• If the sensor is measuring across a temperature gradient, the compensation will be less effective.
• The temperature warmup drift upon power-up is less than 7% of the sensing distance.
After 5 minutes, the apparent switchpoint will be within 0.6% of the actual position.
After 25 minutes, the sensing position will be stable.
Sensor Programming
Green/Red
Power/Signal
Strength LED
Push Button
(IP67 models only)
Figure 1. Sensor Features
Yellow/Red
TEACH/Output
Indicator LED
Two TEACH methods may be used to program the sensor:
• Teach individual minimum and maximum limits, or
• Use Auto-Window feature to center a sensing window around the taught position
The sensor may be programmed either via its push button, or via a remote switch.
Remote programming also may be used to disable the push button, preventing
unauthorized per- sonnel from adjusting the programming settings.
To access this feature, connect the white wire of the sensor to 0 VDC, with a remote
programming switch between the sensor and
the voltage.
Status Indi
c
Power ON/OF
F
LED
OFF
ON Red
ON Green
Dead
Zone
Mini
Ope
r
Ra
c
ators
F
Power is
O
Target is
w
Sensor is
o
Target
mum
r
ating
nge
S
Power
Output
ON:
Green
OFF
Indicates
O
FF
w
eak or outside s
e
o
perating normall
y
Near
S
etpoint
Po
w
ON
:
Gre
Fi
g
e
nsing range.
y, good target.
Target
w
e
r
Output
:
en
ON:
Yellow
g
ure 2. TEACH In
Outp
u
L
OFF
Yellow
ON Red (s
o
ON Red (fl
a
T
arget
Far
Setpoint
Power
ON:
Green
terface
u
t/Teach
ED
Ta
r
op
e
Ta
r
op
e
o
lid) In
T
a
shing) In
T
T
arget
Maxi
m
Oper
a
Ran
g
Output
OFF
r
get is outside wi
n
e
ration).
r
get is within win
d
e
raton).
T
each Mode, wai
T
each Mode, wai
Target
m
um
a
ting
g
e
Power Output
ON:
Red
OFF
Indicates
n
dow limits (nor
m
d
ow limits (norm
a
ting for first limit.
ting for second li
m
m
ally open
a
lly open
m
it.
3
4
Output
OFF
Output
ON
Output
OFF
Output
ON
Output
OFF
Output
ON
Teaching Minimum and Maximum Limits
General Notes on Programming
Normally
Open Operation
• The sensor returns to Run mode if the first TEACH condition is
not registered within 120 seconds.
• After the first limit is taught, the sensor remains in Program mode
until the TEACH sequence is finished.
• To exit Program mode without saving any changes, press and
Minimum
Limit
Maximum
Limit
hold the programming push button for more than 2 seconds
Normally
Closed Operation
(before teaching the second limit).
The sensor reverts to the last saved limits.
Minimum
Limit
Maximum
Limit
Figure 3. Teaching independent minimum and maximum limits
Procedure
Result
Push Button
(0.04 sec ≤ Click ≤ 0.8 sec)
Remote Line
(0.04 sec < T < 0.8 sec)
Programming
Mode
Press and hold push button No action required; sensor is ready for 1st
limit teach
Output LED: ON Red
Power LED: ON Green (good signal) or
ON Red (no signal)
Teach First
Limit
Position the target for the first limit Position the target for the first limit Power LED: Must be ON Green
"Click" the push button Single-pulse the remote line
T
Teach Accepted
Output LED: Flashing Red
Teach Unacceptable
Output LED: ON Red
Teach Second
Limit
Position the target for the second limit Position the target for the second limit Power LED: Must be ON Green
"Click" the push button Single-pulse the remote line
T
Teach Accepted
Output LED: Yellow or OFF
Teach Unacceptable
Output LED: Flashing Red
Teaching L
Teachin
g
the
tau
g
ht positio
n
General Not
e
• The sens
o
re
g
istere
d
•
A
fter the
f
TEACH s
e
• To exit Pr
o
pro
g
ram
m
second li
m
Programming
Mode
Teach First
Limit
Re-Teach
Limit
imits Using
same limit twic
e
n
.
e
s on Pro
g
ram
o
r returns to Ru
d
within 120 se
c
f
irst limit is tau
g
e
quence is fini
s
og
ram mode w
i
m
in
g
push butto
n
m
it
)
. The senso
r
P
P
(0.04 se
c
Press and hold
p
Position the tar
g
"Click" the push
Without moving
push button ag
a
the Auto-W
i
e
automaticall
y
min
g
u
n mode if the fi
c
onds.
ht, the sensor r
s
hed.
i
thout savin
g
a
n
n
for more than
r
reverts to the
l
P
rocedure
P
ush Button
c
≤ Click ≤ 0.8 s
e
p
ush button
g
et for the first li
m
button
the target, "click
"
a
in
Sensor
Output
ON
Sensor
Output
OFF
Near
Range
Figure 5.
i
ndow Feat
u
centers a 20
m
rst TEACH con
emains in Pro
g
ny
chan
g
es, pr
e
2 seconds
(
be
f
l
ast saved pro
g
e
c)
No a
c
limit
t
m
it Posi
t
wind
o
Singl
"
the With
o
the r
e
An
application f
o
u
re
m
m window on t
h
dition is not
ram mode until
e
ss and hold th
e
f
ore teachin
g
t
h
ram.
Rem
o
(0.04 sec
<
c
tion required; s
e
t
each
t
ion the target for
o
w
e-pulse the rem
o
T
o
ut moving the t
a
e
mote line again
T
Any object
in
this
a
the output, whethe
r
returns
a
good sig
n
Output OFF
Sensing
Distance
o
r the Auto-Wind
o
Position
- 10 mm
Output
O
F
Position
- 10 mm
Output
O
h
e
the
e
h
e
No
r
No
Figure
4
o
te Line
<
T < 0.8 sec)
e
nsor is ready for
the center of the
o
te line
T
a
rget, single-puls
e
T
a
rea will
switch
r
or
not the
object
n
al
to
the
sensor.
Positio
n
-10 m
m
o
w feature (retrof
l
F
F
Output
ON
O
N
Output
OFF
r
mally
Open
Ope
r
Taught Positi on
rmally Closed Op
Taught Positi on
4
. Using the Aut
o
each ou
tp
1st Output LE
D
Power LE
D
Red (no si
g
Power LE
D
Teach
A
c
c
Output LE
D
Teach Un
a
Output LE
D
e
Teach
A
c
c
Output LE
D
Teach Un
a
Output LE
D
n
m
Taught
Position
(background
surface)
Po
s
+1
0
Output ON
l
ective mode)
Position
+ 10 mm
Output
OFF
Position
+ 10 mm
Output
ON
r
ation
eration
o
-Window feature
tp
u
t
Result
D
: ON Red
D
: ON Green (go
o
gnal)
D
: Must be ON G
c
epted
D
: Flashing Red
a
cceptable
D
: ON Red
c
epted
D
: Yellow or OF
F
a
cceptable
D
: Flashing Red
s
ition
0
mm
for programmin
g
o
d signal) or ON
reen
F
5
g
6
Normally Open/Normally Closed Operation Select
The sensor can be configured for either normally open or normally closed operation via the remote teach wire (white).
A series of three pulses on the line will toggle between normally open (NO) and normally closed (NC) operation.
Normally open is defined as the output energizing when the target is present. Normally closed is defined as the output energizing when
the target is absent. (See Figure 3. Teaching independent minimum and maximum limits on page 4 and Figure 4. Using the Auto-
Window feature for programming each output on page 5.)
Procedure
Result
Push Button
0.04 sec ≤ Click ≤ 0.8 sec
Remote Line
0.04 sec < T < 0.8 sec
Toggle be-
tween NO/NC
Operation
Not available via push button Triple-pulse the remote line
T T
T
T
T
Either Normally Open or Normally
Closed operation is selected, depend-
ing on previous condition.
Push Button Lockout
Enables or disables the push button to prevent unauthorized personnel from adjusting the program settings.
Procedure
Result
Push Button
0.04 seconds ≤ "Click" ≤ 0.8 seconds
Remote Line
0.04 sec < T < 0.8 sec
Push Button
Lockout
• Not available via push but-
ton
• Four-pulse the remote line
T T T T
T T T
Push buttons are either enabled or
disabled, depending on condition.
CONNECTIONS
NPN (Sinking) Output Models PNP (Sourcing) Output Models
bn
bu
bk
wh
shield
Load
12 – 30 VDC
Remote programming
switch (normally open)
bn
bu
bk
wh
shield
Load
12 – 30 VDC
Remote programming
switch (normally open)
Cable and QD hookups are functionally identical.
It is recommended that the shield wire be connected to earth ground. Shielded cordsets are recommended for all QD models.
TECHNI
C
Sensin
g
Supply
V
Ultraso
n
Supply
P
Output
C
Output
P
Output
R
Output
R
Delay at
Temper
a
Repeata
Minimu
m
Hystere
s
Indicato
r
Adjust
m
Constru
c
Connec
t
Environ
m
Operati
n
Relative
V
ibratio
n
Temper
a
Applicat
i
Certific
a
C
AL DATA
g
Range:
V
oltage:
n
ic Frequency
P
rotection Circ
u
C
onfiguration
P
rotection:
R
ating:
R
esponse:
Power Up:
a
ture Effect:
bility:
m
Window Siz
e
s
is:
rs:
m
ents:
c
tion:
t
ions:
m
ental Rating:
n
g Temperatur
e
Humidity:
n
and Mechani
c
a
ture Warmup
D
i
on Notes:
a
tions:
:
u
itry:
:
e
:
e
:
c
al Shock:
D
rift:
1
SPST
s
one N
P
Rating: 10
0
Off-state l
e
ON-state s
a
Range Indi
Range Indi
Teach/Out
p
Sensin
g
Lea
k
(vibratio
Also
1. If supply
2. NPN off-
s
isolated l
o
3. Objects
p
1
2 – 30 VDC (1
0
Protected
a
s
olid-state swit
c
P
N (current sink
-
Pr
o
0
mA maximum
e
akage current
:
a
turation volta
g
Non-encapsul
a
cator (Red/Gr
e
cator: Green -
T
Red - T
a
OFF - S
e
p
ut Indicator:
Y
R
O
g
Window Limits
may be set u
s
ABS housin
g
k
proof design, r
a
All models
m
n: 10 to 60 Hz
m
meets IEC 947
See
voltage is >24
V
s
tate leakage c
u
o
ads. For load
c
p
assing inside t
h
50
…
0
% maximum ri
p
300 kHz, r
e
a
gainst reverse
c
h conducts wh
e
-
ing) or one PN
o
tected against
load; see Appli
c
:
less than 10 µ
A
see Appli
c
ge: NPN: les
s
PNP: less
15 mi
300 m
a
ted models: ±
±
0
.
5
1
.
e
en) and Teach
T
arget is within
a
rget is outside
s
e
nsing Power is
Y
ellow - Target i
R
ed - Sensor is
O
FF - Target is
: TEACH-mode
s
ing the push b
u
g
, TPE Push B
u
Polycarbo
n
4-pin M
1
a
ted NEMA 6P;
UL
−20
…
100% (no
n
m
eet Mil. Std. 2
0
m
ax., double a
m
-5-2 requireme
n
Temperature
C
V
DC, derate ma
x
u
rrent is < 200
µ
c
urrent of 100
m
h
e specified ne
a
…
500 mm
p
ple); 25 mA m
a
e
p. rate 7.5 ms
polarity and tra
n
e
n target is sen
s
P (current sour
c
short-circuit co
n
c
ation Note 1
A
(sourcing);les
c
ation Note 2
s
than 1.6V @ 1
0
than 3.0V @ 1
0
lliseconds
illiseconds
0.05% per °C
f
±
0.1% per °C f
r
.
7 mm
5
mm
.
4 mm
/Output Indica
t
sensing range;
s
ensing range;
s
OFF
s within taught
l
in TEACH mod
outside taught
w
programming
o
u
tton or remotel
y
u
tton, ABS Push
nate lightpipes
1
2 connector
IEC IP67 or IP
6
Type 1
…
+60 °C
n
-condensing)
0
2F requiremen
m
plitude 0.06",
m
n
ts: 30G 11 ms
d
C
ompensation o
n
x
imum out- put
c
µ
A for load resis
m
A, leakage is <
a
r limit may pro
d
a
x (exclusive of
n
sient voltages
s
ed within sensi
n
c
ing), dependin
g
n
ditions
s than 200 µA (
s
0
0 mA;
0
0 m
A
f
rom -20 to +50
r
om +50 to +60
t
or (Yellow/Re
d
l
imits;
e
w
indow limits;
o
f near and far
w
y
via TEACH in
p
h
Button housin
g
6
8 depending o
n
ts method 201
A
m
aximum accel
e
d
uration, half si
n
n
page 2
c
urrent 5 mA/°
C
s
tances > 3 kΩ
o
1% of load cur
r
d
uce a false res
p
load)
n
g window;
g
on model.
s
inking);
°C,
°C
d
)
w
indow limits
p
ut
g
,
n
model;
A
e
ration 10G).
n
e wave.
C
above 50°C.
o
r optically
r
ent.
p
onse.
7
8
OVERALL DIMENSIONS
Dimensions in mm
Datalogic S.r.l.
Via S. Vitalino 13 - 40012 Calderara di Reno - Italy
Tel: +39 051 3147011 - Fax: +39 051 3147205 - www.datalogic.com
Datalogic reserves the right to make modifications and improvements without prior notification.
821002642 Rev.C
174416 Rev.C
/