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PRA Series0 pages
PRA Series
Cylindrical Spatter-Resistance type
Spatter-resistance type proximity sensor
Features
2-wire non-polarity
● Coated with teflon against thermal resistance
(Prevention of malfunction due to spatter)
● Improved the noise resistance with dedicated IC
● Built-in surge protection circuit
● Built-in overcurrent protection circuit
(DC 2-wire, 3-wire type)
● Built-in reverse polarity protection circuit
(DC 3-wire type)
● Protection structure IP67(IEC standard)
● Replaceable for spatter-resistance type limit switches
(B)
Fiber
optic
sensor
(C)
Door/Area
sensor
(D)
Proximity
sensor
(E)
Pressure
sensor
(F)
Rotary
encoder
Please read “Caution for your safety” 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 teflon against thermal resistance.
Also, the protection cover sold optionally has the same function.
Specifications
● DC 2-wire type
※When the □ model name is X, it is non-polarity model.
PRAWT12-2 D O
PRAWT12-2 D C PRAT18-5 D O
PRAWT12-2 D O-I PRAT18-5 D C
PRAWT12-2 D C-I
5mm
PRAWT18-5 D O
PRAWT18-5 D C PRAT30-10 D O
PRAWT18-5 D O-I PRAT30-10 D C
PRAWT18-5 D C-I
10mm
Model
PRAT12-2 D O
PRAT12-2 D C
Sensing distance
2mm
Hysteresis
12×12×1mm(Iron)
18×18×1mm(Iron)
30×30×1mm(Iron)
Setting distance
Power supply
(Operating voltage)
Leakage current
0 to 1.4mm
12-24VDC
(10 -30VDC)
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
Min. 50MΩ(at 500VDC megger)
Dielectric strength
1500VAC 50/60Hz for 1 minute(between all terminals and case)
Vibration
1mm amplitude at frequency of 10 to 55Hz(for 1 min.) in each of X, Y, Z directions for 2 hours
Shock
500m/s²(approx. 50G) in each of X, Y, Z directions for 3 times
Indicator
PRAWT30-10 D O
PRAWT30-10 D C
PRAWT30-10 D O-I
PRAWT30-10 D C-I
Max. 10% of sensing distance
Standard sensing target
Operation indicator(red LED)
Protection circuit
Material
Approval
(I)
SSR/
Power
controller
(J)
Counter
(K)
Timer
(N)
Display
unit
(O)
Sensor
controller
(P)
Switching
mode power
supply
(Q)
Stepper
motor&
Driver&Controller
(R)
Graphic/
Logic
panel
IP67(IEC standard)
ø4mm, 2-wire, 2m
(H)
Temp.
controller
(M)
Tacho/
Speed/ Pulse
meter
Surge protection circuit, Overcurrent protection circuit
Protection
(G)
Connector/
Socket
(L)
Panel
meter
Environ- Ambient temperature -25 to 70℃, storage: -30 to 80℃
ment
Ambient humidity
35 to 95%RH, storage: 35 to 95%RH
Cable
(A)
Photo
electric
sensor
(S)
Field
network
device
ø5mm, 2-wire, 2m
(For cable type, 300mm, M12 connector), (AWG22, Core diameter: 0.08mm, Number of cores: 60, Insulator diameter: ø1.25mm)
Case/Nut: Teflon coated Brass, Washer: Teflon coated Iron, Sensing surface: Teflon,
Standard cable(Black): Polyvinyl chloride(PVC)
Approx. 84g
Approx. 54g
Approx. 122g
Approx. 70g
Approx. 207g
Approx. 134g
(approx. 72g)
(approx. 42g)
(approx. 110g)
(approx. 58g)
(approx. 170g)
(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 with packaging and the weight in parentheses is only unit weight.
※Environment resistance is rated at no freezing or condensation.
※Refer to the G-5 for IEC standard connector cables and specifications.
※The '□' of model name is for power type. 'D' is 12-24VDC, 'X' is non-polarity 12-24VDC.
Weight※3
D-43
(T)
Software
(U)
Other
