PRAW Series
Cylindrial, Spatter-Resistance, Cable Connector Type
Features
● Prevent malfunction due to welding spatter with
PTFE coating
● Improved the noise immunity with dedicated IC
● Built-in surge protection circuit
● Built-in output short over current protection circuit
● IP67 protection structure (IEC standard)
● Replaceable for spatter-resistance type limit switches
Please read “Safety Considerations” in operation
manual before using.
The Characteristic of Spatter-Resistance Type
The hot arc from arc welding machine is adhesive even with metals or plastics.
Therefore, normal proximity sensor might have malfunction even though there are no sensing object if the arcs are put on
the sensing surface. The arcs are not adhered on the sensing part of the spatter-resistance type proximity sensor as the
part is coated with PTFE against thermal resistance.
Also, the protection cover sold optionally has the same function.
Specifications
※When the
● DC 2-wire type
model name is X, it is non-polarity model.
PRAWT12-2 D C
PRAWT12-2 D O
Model
PRAWT12-2 D C-I
PRAWT12-2 D O-I
Diameter of the sensing side 12mm
PRAWT18-5 D O
PRAWT18-5 D C
PRAWT18-5 D O-I
PRAWT18-5 D C-I
18mm
PRAWT30-10 D O
PRAWT30-10 D C
PRAWT30-10 D O-I
PRAWT30-10 D C-I
30mm
Sensing distance
2mm
5mm
10mm
Installation
Shield (flush)
Hysteresis
Max. 10% of sensing distance
Standard sensing target
12×12×1mm (iron)
18×18×1mm (iron)
30×30×1mm (iron)
Setting distance
Power supply
(operating voltage)
Leakage current
0 to 1.4mm
12-24VDCᜡ
(10-30VDCᜡ)
Max. 0.6mA
0 to 3.5mm
0 to 7mm
Response frequency※1
1.5kHz
500Hz
400Hz
Residual voltage※2
Max. 3.5V (non-polarity type is max. 5V)
Affection by Temp.
Max. ±10% for sensing distance at ambient temperature 20℃
Control output
2 to 100mA
Insulation resistance
Over 50MΩ (at 500VDC megger)
Dielectric strength
1,500VAC 50/60Hz for 1 min (between all terminals and case)
Vibration
1mm amplitude at frequency 10 to 55Hz (for 1 min) in each X, Y, Z direction for 2 hours
Shock
500m/s² (approx. 50G) in each X, Y, Z direction for 3 times
Indicator
Operation indicator: Red LED
Environ- Ambient temperature -25 to 70℃, storage: -30 to 80℃
ment
Ambient humidity
35 to 95%RH, storage: 35 to 95%RH
Protection circuit
Surge protection circuit, output short over current protection circuit
Protection structure
IP67 (IEC standard)
Cable
Material
Ø4mm, 2-wire, 300mm, M12 connector Ø5mm, 2-wire, 300mm, M12 connector
AWG22, Core diameter: 0.8mm, Number of cores: 60, Insulator diameter: Ø1.25mm
Case/Nut: PTFE coated brass, Washer: PTFE coated iron, Sensing surface: PTFE,
Standard cable (black): Polyvinyl chloride (PVC)
Approval
Weight※3
Approx. 54g (approx. 42g)
Approx. 70g (approx. 58g)
Approx. 134g (approx. 122g)
※1: The response frequency is the average value. The standard sensing target is used and the width is set as 2 times of the standard
sensing target, 1/2 of the sensing distance for the distance.
※2: Before using non-polarity type, check the condition of connected divice because residual voltage is 5V.
※3: The weight includes packaging. The weight in parenthesis in for unit only.
※For more information about cable and specification, refer to the (I) Connectors/Cable Connectors/Sensor Distribution Boxes/Sockets
※The ' ' of model name is for power type. 'D' is 12-24VDC, 'X' is non-polarity 12-24VDC.
※Environment resistance is rated at no freezing or condensation.
F-134
Cylindrial, Spatter-Resistance, Cable Connector Type
Dimensions
(unit: mm)
PRAWT12-2D
PRAWT18-5D
Ø21
Ø29
300
43
300
47.5
24
32
17
SENSORS
CONTROLLERS
29.5
Operation
indicator
Operation
indicator
M12
Ø4
4
Ø5
4
M12×1
MOTION DEVICES
M12
SOFTWARE
M18×1
PRAWT30-10D
Ø42
300
58.5
35
38.5
Operation
indicator
Ø5
(A)
Photoelectric
Sensors
(B)
Fiber Optic
Sensors
M12
M30×1.5
5
(C)
LiDAR
Control Output Diagram and Load Operation
(D)
Door/Area
Sensors
DC 2-wire type
Load
+V
Main circuit
Brown
(E)
Vision
Sensors
Sensing
target
Presence
None
Load
Operation
Return
N.O.
N.C.
(F)
Proximity
Sensors
(G)
Pressure
Sensors
Operation ON
Indicator
0V (red LED) OFF
Blue
(H)
Rotary
Encoders
(I)
Connectors/
Connector Cables/
Sensor Distribution
Boxes/ Sockets
Wiring Diagram
DC 2-wire type (standard type)
DC 2-wire type (IEC standard type)
Normally Open (N.O.) / Normally Closed (N.C.)
2
1
3
4
Brown
Load
Blue
+V
0V
※①, ② are not used terminals.
2
1
3
4
Normally Open (N.O.)
Brown
Brown
Blue
Load
+V
0V
2
1
3
4
Blue
Load
Normally Closed (N.C.)
Brown
+V
0V
2
1
3
4
Blue
Load
+V
0V
※②,③ of N.O. type and ③,④ of N.C. type are not used terminals.
※The pin arrangement of connector applying IEC standard is being
developed.
※Please attach "I" at the end of the name of standard type for
purchasing the IEC standard product.
E.g.) PRAWT12-2DO-I
※The connector cable for IEC standard is being developed.
Please attach "I' at the end of the name of standard type.
E.g.) CID2-2-I, CLD2-5-I
F-135
PRAW Series
PRAWT12-2D
Sensing
target
Detecting
Method
Sensing
distance (X)
d
One side
length
Sensing Distance Feature Data by Target Material and Size
PRAWT18-5D
2.50
6.00
Iron(SS401)
Iron(SS401)
Stainless steel 364
(SUS364)
1.50
1.00
Brass(C3601)
Aluminum(ALS052)
Copper(C1100)
0.50
0.00
4
8 10 12 15 18 20 25 30 35 40 45 50 60 70 75 80 90 100
One side length of sensing target d (mm)
PRAWT30-10D
12.00
Iron(SS401)
Sensing distance X (mm)
10.00
8.00
Stainless steel 364
(SUS364)
6.00
Brass(C3601)
Aluminum(ALS052)
Copper(C1100)
4.00
2.00
0.00
F-136
4
8 10 12 15 18 20 25 30 35 40 45 50 60 70 75 80 90 100
One side length of sensing target d (mm)
5.00
Sensing distance X (mm)
Sensing distance X (mm)
2.00
4.00
3.00
Stainless steel 364
(SUS364)
2.00
Brass(C3601)
Aluminum(ALS052)
Copper(C1100)
1.00
0.00
4
8 10 12 15 18 20 25 30 35 40 45 50 60 70 75 80 90 100
One side length of sensing target d (mm)
Cylindrial, Spatter-Resistance, Cable Connector Type
Sensing Distance Feature Data by Parallel (Left/Right) Movement
Detecting
Method
SENSORS
Sensing
target
Sensing
distance (X)
Sensing
area (Y)
CONTROLLERS
MOTION DEVICES
PRAWT12-2D
PRAWT18-5D
2.0
SOFTWARE
PRAWT30-10D
5.0
10.0
4.0
8.0
Sensing distance X (mm)
Sensing distance X (mm)
1.5
1.3
1.0
0.7
3.0
2.0
Sensing distance X (mm)
1.7
(A)
Photoelectric
Sensors
(B)
Fiber Optic
Sensors
6.0
(C)
LiDAR
(D)
Door/Area
Sensors
4.0
0.4
(E)
Vision
Sensors
0.1
4.0
3.0 2.0 1.0 0.0 1.0 2.0 3.0 4.0
Left ← Center → Right
Sensing area Y (mm)
1.0
10.0 8.0 6.0 4.0 2.0 0.0 2.0 4.0 6.0 8.0 10.0
Left ← Center → Right
Sensing area Y (mm)
2.0
10.0 8.0 6.0 4.0 2.0 0.0 2.0 4.0 6.0 8.0 10.0
Left ← Center → Right
Sensing area Y (mm)
(F)
Proximity
Sensors
(G)
Pressure
Sensors
(H)
Rotary
Encoders
(I)
Connectors/
Connector Cables/
Sensor Distribution
Boxes/ Sockets
F-137
PRAW Series
Proper Usage
Load connections
Brown
Brown
+
-
Load
+
24VDC
Blue
Blue
-
24VDC
Load
When using DC 2-wire type proximity sensor, the load must be connected otherwise internal components may be
damaged. The load can be connected to either wire.
In case of the load current is small
If the load current is under 5mA, please make sure the
residual voltage is less than the return voltage of the load
by connecting a bleeder resistor in parallel with the load as
shown in the diagram.
● DC 2-wire type
Brown
Vs
Vs2
(kΩ)
P>
(W)
I
R
[I: Action current of load, R: Bleeder resistance, P: Permissible power]
R≤
Load
Bleeder resistor (R)
Blue
+
-
Vs
Please make the current on proximity sensor smaller than the
return current of load by connecting a bleeder resistor in
parallel.
※W value of Bleeder resistor should be bigger for proper heat.
Vs
Vs2
(kΩ)
P>
(W)
Io-Ioff
R
Power supply,
Io: Min. action current of proximity sensor
[ Vs:
Ioff: Return current of load, P: Number of Bleeder resistance watt
R≤
]
Mutual-interference & Influence by surrounding metals
When several proximity sensors are mounted close to one another a malfunction of th may be caused due to mutual
interference. Therefore, be sure to provide a minimum distance between the two sensors as below chart indicates.
Parallel B
A
Face to Face
When sensors are mounted on metallic panel, you must prevent the sensors from being affected by any metallic object
except target. Therefore, be sure to provide a minimum distance as below chart indicates.
m
Ød
n
ℓ
ℓ
ℓ
(unit: mm)
Item
A
B
ℓ
Ød
m
n
F-138
Model
PRAWT12-2D
PRAWT18-5D
PRAWT30-10D
12
24
0
12
6
18
30
36
0
18
15
27
60
60
0
30
30
45