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Related Information
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SENSORS
PHOTOELECTRIC
SENSORS
MICRO
PHOTOELECTRIC
SENSORS
AREA
SENSORS
SAFETY LIGHT
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SAFETY COMPONENTS
PRESSURE /
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Detection
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Small / Slim
Object Detection
Obstacle
Detection
US-N300
Thru-beam Type Ultrasonic Sensor
US-N300
■General terms and conditions ............. F-3
■Selection guide
..............................
P.865~
■General precautions
...................... P.1595
Suitable for detecting transparent lms
or transparent bottles
Reliable detection of transparent objects
The sensor reliably
detects transparent lms
or transparent objects.
Only 16 mm 0.630 in thick
Its 16 mm 0.630 in thick compact body allows mounting
in a narrow space.
Simple operation mode selection
The operation mode can be selected either sound-
received-ON or sound-blocked-ON simply by changing
the connection of the control input wire.
ORDER GUIDE
Type Appearance Sensing range Model No.
(Note)
Output
Thru-beam
2 m 6.562 ft
cable length
300 mm
11.811 in
US-N300
NPN transistor
universal
5 m 16.404 ft
cable length
US-N300-C5
Accessory
Two M4
(length 15 mm
0.591 in)
screws with washers
are attached.
・
MS-N30
(Sensor mounting bracket)
Note: Models whose model name on the product nameplate is followed by “P” are transmitter, while those
whose model name is followed by “D” are receiver.
APPLICATIONS
Detecting transparent lm or
transparent glass
Detecting transparent bottles Detecting transparent and
opaque objects
panasonic.net/id/pidsx/global
926
Thru-beam Type Ultrasonic Sensor US-N300
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
SAFETY LIGHT
CURTAINS /
SAFETY
COMPONENTS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
LASER
MARKERS
PLC
HUMAN
MACHINE
INTERFACES
ENERGY
MANAGEMENT
SOLUTIONS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Liquid Leak
Detection
Liquid Level
Detection
Water
Detection
Color Mark
Detection
Wafer
Detection
Ultrasonic
Small / Slim
Object Detection
Obstacle
Detection
US-N300
I/O CIRCUIT AND WIRING DIAGRAMS
I/O circuit diagram
Brown
Black
Blue
Pink
Load
*1
12 to 24 V DC
±10 %
Color code
+
-
*1
Note: The transmitter has only two power supply wires (+V and 0 V).
Wiring diagram
Non-voltage contact, NPN open-collector transistor or
NPN non-contact transistor
or or
• Control input
Low (-0.5 to +1.5 V, or connected to 0 V): Sound-received-ON
High (6 V to supply voltage, or open): Sound-blocked-ON
Symbols... D1: Reverse supply polarity protection diode
D2: Reverse current protection diode
ZD: Surge absorption zener diode
Tr : NPN output transistor
Type Thru-beam
Item Model No. US-N300
Sensing range 300 mm 11.811 in
Sensing object Transparent, translucent or opaque object: 20 × 20 mm 0.787 × 0.787 in or more, Hole: 10 × 10 mm 0.394 × 0.394 in or more
Supply voltage 12 to 24 V DC ±10 % Ripple P-P 10 % or less
Current consumption Transmitter: 35 mA or less, Receiver: 35 mA or less
Output
NPN transistor universal
• Maximum sink current: 100 mA
• Residual voltage: 1 V or less (at 100 mA sink current)
Output operation Selectable either sound-received-ON or sound-blocked-ON by the control input
Short-circuit protection Incorporated
Response time 5 ms or less
Operation indicator Red LED (lights up when the output is ON)
Sensitivity adjuster Continuously variable adjuster
Transmission frequency 220 kHz approx.
Environmental resistance
Protection IP62 (IEC)
Ambient temperature 0 to +50 °C +32 to +122 °F (No dew condensation), Storage: -25 to +70 °C -13 to +158 °F
Ambient humidity 35 to 85 % RH, Storage: 35 to 85 % RH
Voltage withstandability 1,500 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance 20 MΩ, or more, with 500 V DC megger between all supply terminals connected together and enclosure
Vibration resistance 10 to 55 Hz frequency, 1.5 mm 0.059 in double amplitude in X, Y and Z directions for two hours each
Shock resistance 100 m/s2 acceleration (10 G approx.) in X, Y and Z directions three times each
Material Enclosure: Polycarbonate
Cable 0.2 mm2 4-core (transmitter: 2-core) cabtyre cable, 2 m 6.562 ft long
Cable extension Extension up to total 100 m 328.084 ft is possible, for both transmitter and receiver, with 0.2 mm2, or more, cable.
Weight Transmitter: 80 g approx., Receiver: 85 g approx.
Accessories MS-N30 (Sensor mounting bracket): 1 set for transmitter and receiver, Adjusting screwdriver: 1 pc.
SPECIFICATIONS
Note: Where measurement conditions have not been specied precisely, the conditions used were an ambient temperature of +23 ˚C +73.4 ˚F.
D1
Tr 100 mA max.
ZD
4.7 kΩ
D2
*1
12 to 24 V DC
±10 %
Load
Sensor circuit
Users’ circuitInternal circuit
Color code
(Brown) V
(Black) Output
(Blue) 0 V
(Pink) Control input
+
-
+
927
Thru-beam Type Ultrasonic Sensor US-N300
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
SAFETY LIGHT
CURTAINS /
SAFETY
COMPONENTS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
LASER
MARKERS
PLC
HUMAN
MACHINE
INTERFACES
ENERGY
MANAGEMENT
SOLUTIONS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Liquid Leak
Detection
Liquid Level
Detection
Water
Detection
Color Mark
Detection
Wafer
Detection
Ultrasonic
Small / Slim
Object Detection
Obstacle
Detection
US-N300
SENSING CHARACTERISTICS (TYPICAL)
Parallel deviation
ℓ
L
Receiver
Transmitter
0
200
100
300
400
7.874
3.937
11.811
15.748
Setting distance L (mm in)
40 20 0 20 40
1.575 0.787 0.787
1.575
Operating point ℓ (mm in)
Center RightLeft
Angular deviation
L
θ
Receiver
Transmitter
0
200
100
300
400
7.874
3.937
11.811
15.748
Setting distance L (mm in)
40 20 0 20
40
Operating angle θ (°)
Center RightLeft
Sensing eld
Receiver
Transmitter
L
300
11.811
ℓ
50 × 50 mm 1.969 × 1.969 in
Sound insulation board
0
200
100
300
400
7.874
3.937
11.811
15.748
Setting distance L (mm in)
20 10 0 10 20
0.787 0.394 0.394
0.787
Operating point ℓ (mm in)
Center RightLeft
PRECAUTIONS FOR PROPER USE Refer to p.1595 for general precautions.
Inuence of background objects
• If sensor heads are installed as shown in the gure
below, the operation may become unstable by the
reected sound wave.
An object, hard and
plain like a glass plate,
reflects the sound
wave.
Transmitter
Sensing object Placed perpendicular
to the sensing axis.
Receiver
Background
Mounting
• The tightening torque should be 0.49 N·m or less.
M4 (length
15 mm 0.591 in)
screws with
washers
Sensor mounting
bracket
MS-N30
(Accessory)
Sensitivity adjustment
• Normally, use the sensor at the maximum sensitivity.
However, if the sensing is not proper due to surrounding
objects (reection from surrounding objects, etc.), adjust
the sensitivity.
Inuence of surrounding objects
Inuence of an object parallel to the sensing axis
• If there is a wall or a curtain near the sensing axis, the
sound reection may cause the operation to be unstable.
Receiver
Sensing axis
Wall or curtain
Transmitter
Keep a distance of 20 mm 0.787 in or more
<Countermeasure>
<Countermeasure>
The receiver should be placed away from the object and at
an angle to it as shown below.
Transmitter
Object
10° approx.
Mutual interference
• When two or more sensors are mounted close together,
the sensors may not enter the “sound-blocked state” due
to mutual interference.
Parallel mounting Face-to-face mounting
Transmitter Receiver Transmitter Receiver
Transmitter Receiver Receiver Transmitter Transmitter
Keep a distance of 10 mm 0.394 in or more
Back-to-back mounting is possible.
Receiver Transmitter
Receiver
Transmitter
Keep a distance of
100 mm 3.937 in or more
①
②
<Countermeasure>
• Never use this product as a sensing device
for personnel protection.
• In case of using sensing devices for
personnel protection, use products which
meet laws and standards, such as OSHA,
ANSI or IEC etc., for personnel protection
applicable in each region or country.
928
Thru-beam Type Ultrasonic Sensor US-N300
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
SAFETY LIGHT
CURTAINS /
SAFETY
COMPONENTS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
LASER
MARKERS
PLC
HUMAN
MACHINE
INTERFACES
ENERGY
MANAGEMENT
SOLUTIONS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Liquid Leak
Detection
Liquid Level
Detection
Water
Detection
Color Mark
Detection
Wafer
Detection
Ultrasonic
Small / Slim
Object Detection
Obstacle
Detection
US-N300
PRECAUTIONS FOR PROPER USE Refer to p.1595 for general precautions.
Traveling speed and minimum sensing object width
• Minimum sensing object width is 20 × 20 mm 0.787 ×
0.787 in in the stationary condition.
The minimum sensing width of a traveling object is
related to the traveling speed and the sensor response
time by the following formula.
W = VT + A (m)
W : Minimum sensing object width (m)
V : Traveling speed of the object (m/sec.)
T : Sensor response time = 0.005 (sec.)
A : Minimum sensing object width in the stationary condition
= 0.02 0.066 (m ft)
Example: If V = 10 m 32.808 ft /sec.
W = 10 32.808 × 0.005 0.016 + 0.02 0.066
= 0.07 m 0.230 ft
= 70 mm 2.756 in
Others
• Do not use during the initial transient time (50 ms) after the
power supply is switched on.
• The ultrasonic sound propagates through the air.
If the sensor is used at a place where air blows or the
temperature suddenly changes (near a door, an air
conditioner, etc.) the operation may become unstable.
Avoid using US-N300 at such places.
• Take care that the sensor may malfunction due to an
intense extraneous sound, such as, metal impact sound.
• Do not expose the transmitting element or the receiving
element to moisture or dust. It may affect the sensing
operation.
12.6 0.496
28
1.102
7.4
0.291
12.1 0.476
8.3
0.327
(2)
(0.079)
13 0.512
43
1.693
60
2.632
4
0.157
7.5
0.295
20
0.787
ø13
ø0.512
20
0.787
16
0.630
Sensitivity adjuster (receiver only)
Operation indicator (Red) (Receiver only)
2-M4 × 0.7 0.028
thru-hole threads
ø4.8 ø0.189 cable, 2 m 6.562 ft
long
MS-N30 Sensor mounting bracket (Accessory)
4
0.157
4.3
0.169
20
0.787
28
32
1.260
5
0.197
4-ø4.3 ø0.169
holes
4.3
0.169
32
1.260
4
0.157
39
1.535
(2)
(0.079)
12
0.472
5
0.197
28
1.102
75
2.953
88
3.465
20
0.787
30
1.181
t 2
t 0.079
19
0.748
35
1.378
39
1.535
Assembly dimensions
Mounting drawing
with the receiver
US-N300 Sensor
DIMENSIONS (Unit: mm in)The CAD data can be downloaded from our website.
12
0.472
4
0.157
19
0.748
4.3
0.169
4.3
0.169
4
0.157
20
0.787
30
1.181
20
0.787
8 0.315
20 0.787
32
1.260
37
1.457
12 0.472
t 2
t 0.079
4-ø4.3
ø0.169 holes
Material: Cold rolled carbon steel (SPCC)
Two M4 (length 15 mm
0.591 in) screws with washers are attached.