M8 through-beam photoelectric sensor OBM1-08.21.FK
Sn=1m, NPN/NO, 9-36VDC, 250mA, M8x46mm
The OBM1-08.21.FK infrared photoelectric through-beam sensor for direct current consists of a receiver and transmitter which are located in two cylindrical metallic housings M8x46mm. The receiver is with output type NPN, with one normally open contact. The maximum distance of operation of the photoelectric sensor is 1m. The transmitter ends with a 2-wire PVC connecting cable with a length of 2m. The receiver ends with a 3-wire PVC connecting cable with a length of 2m and has an LED indicator showing the output state. The optical sensor is protected from improper inclusion of the cables, overcurrent and short-circuit at the output.
Application and operating principle
The presented M8 photoelectric through-beam switch is a system of two housings - transmitter and receiver, located opposite each other. They are interconnected by a modulated infrared light beam. When an object passes between the emitter and the receiver, the light beam is interrupted and the output of the receiver is switched from one state to another. The receiver output indicator lights up when the receiver output is active.
TECHNICAL PARAMETERS
Operating distance, Sn | 0...1 m |
Supply voltage, Us | 9…36 VDC (Ripple ±10 %) |
Residual voltage (max), Ures | 0,8 V (I = 250 mA) |
Load current (max), Iout | 250 mА |
Protection of output (scanning), Iprot | 350 mA (25ºС) |
Current consumption, Is | 17 mА (10mA / T + 7mA / R) |
Switching frequency (max), fo | 300 Hz |
Spectrum area of operating | 850…950 nm |
Operating ambient illumination | 0...10’000 Lx |
Operating temperature range, Tamb | -25º…+70º C |
Degree of protection | IP65 |
Light output indicator | LED |
Connection cable - transmitter | 2x0.25 mm², L=2 m, PVC |
Connection cable - receiver | 3x0.25 mm², L=2 m, PVC |
Overall dimensions | M8x1, L=46 mm |
Housing - metallic | CuZn (Ni plated) |
Scheme of connection
Overall dimensions (mm)
Short description
The M8 optoelectronic barrier sensor is used in industrial systems, as electronic automation equipment for switching at 3-wire electrical circuits of direct current. When passing a nontransparent object between the receiver and the transmitter, the optical connection breaks and the receiver's output switches. The barrier photoelectric sensor there is a longer period of work due to contactless switching of the electrical circuits in which is included.
Documentation
TYPE PARAMETERS OF M8 BARRIER PHOTOELECTRIC SENSORS, DC
TYPE | OUTPUT FUNCTION |
---|---|
OBM1-08.11.FK | PNP / NO |
OBM1-08.12.FK | PNP / NC |
OBM1-08.21.FK | NPN / NO |
OBM1-08.22.FK | NPN / NC |
OBP1-08.63.F | Transmitter |