Pepperl Fuchs UBR250-F77-E3-V31 Data Sheet
Reflex ultrasonic sensor UBR250-F77-E3-V31
Technical data
General specifications
Sensing range 0 ... 250 mm
Adjustment range 53 ... 250 mm
Standard target plate 20 mm x 20 mm
Transducer frequency approx. 400 kHz
Nominal ratings
Model Number
UBR250-F77-E3-V31
Reflex ultrasonic sensor
Features
• Miniature design
•Program input
• Degree of protection IP67
• Switching status indicator, yellow
LED
Diagrams
Characteristic response curve
Distance Y [mm]
50
40
30
20
10
0
-10
-20
-30
-40
-50
0 50 100 150 200 250 300
Distance X [mm]
Y
Time delay before availability t
Limit data
Permissible cable length max. 300 m
Indicators/operating means
LED yellow switching state and flashing: Teach-In
Electrical specifications
Rated operating voltage U
Operating voltage U
No-load supply current I
Input
Input type 1 program input
Level low level : 0 ... 0.7 V (Teach-In active)
Input impedance 16 kΩ
Pulse length ≥ 3 s
Output
Output type 1 switch output PNP , NC contact
Rated operating current I
Voltage drop U
Switch-on delay t
Switching frequency f 10 Hz
Off-state current I
Temperature influence + 0.17 %/K
Ambient conditions
Ambient temperature -25 ... 70 °C (-13 ... 158 °F)
Storage temperature -40 ... 85 °C (-40 ... 185 °F)
Shock resistance 30 g , 11 ms period
Vibration resistance 10 ... 55 Hz , Amplitude ± 1 mm
Mechanical specifications
Connection type M8 x 1 connector , 4-pin
Degree of protection IP67
Material
Housing Polycarbonate
Transducer epoxy resin/hollow glass sphere mixture; polyurethane foam
Installation position any position
Mass 10 g
Tightening torque, fastening screws max. 0.2 Nm
Compliance with standards and
directives
Standard conformity
Standards EN 60947-5-2:2007+A1:2012
Approvals and certificates
UL approval cULus Listed, General Purpose
CSA approval cCSAus Listed, General Purpose
CCC approval CCC approval / marking not required for products rated ≤36 V
B
d
on
r
v
e
0
e
Safety Note
The use of this device in applications, where the safety of persons depends from the devices function,
is not allowed!
X
≤ 150 ms
24 V DC
20 ... 30 V DC , ripple 10 %SS ; 12 ... 20 V DC sensitivity
reduced to 90 %
≤ 20 mA
high level : U
200 mA , short-circuit/overload protected
≤ 2 V
≤ 50 ms
≤ 0.01 mA
IEC 60947-5-2:2007 + A1:2012
or open input (Teach-In inactive)
B
Release date: 2016-04-29 13:59 Date of issue: 2016-04-29 233262_eng.xml
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
1
Reflex ultrasonic sensor UBR250-F77-E3-V31
Dimensions
23
12
3.2
31
189
M8 x 1
25
322
ø3.2
3.2
3 14
17
Description of Sensor Function
The ultrasonic sensor works like a retroreflective sensor. It transmits ultrasonic packages in
quick succession and responds to their reflection off a reference object at a defined distance.
The distance T to the reference object can be taught in. The sensor has a switch output. This
output switches if the reference object is not detected, which happens when another object is
located between the sensor and the reference object. The limit of the switching range is derived as follows: T - 5 %.
Notes
- The distance T of the reference object must not be changed during operation. If the distance
T changes, it will have to be taught-in again.
- The reference object must not be removed during operation.
Teach-In the Distance to the Reference Object
Proceed as follows to teach in the distance T to the reference object:
1. Connect the sensor and turn on the operating voltage.
2. Place the reference object at the required distance.
3. Connect the teach-in input (ET) to -U
troller.
The LED will start flashing after 3 seconds to indicate that the sensor is ready to start the
teach-in process
4. Disconnect the teach-in input (ET) with -U
been taught in
(*)
.
(*)
.
(*) If no object is detected within the sensing range of the sensor, the sensor will start flash-
ing at a faster rate. The switching point remains unchanged.
. This can be done using the pushbutton or the con-
B
. The distance T to the reference object has now
B
Switching characteristics and display LED
Sensing range Output LED
Adjustment range
Switching area 5%
" -U
of
T
Reference
object
(position T)
" -U
" = Object position
Safety Note
The use of this device in applications, where the safety of persons depends from the devices function, is not allowed!
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
2
+U
B
B
B
On
Off
Off
Release date: 2016-04-29 13:59 Date of issue: 2016-04-29 233262_eng.xml
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