Autonics Photo Electric Sensor Fiber Sensor BF4R

Write a Review
230.00 Grams
Minimum Purchase:
1 unit
Calculated at Checkout


The BF4 series fiber optic amplifiers feature high-speed response times and various functions to provide reliable detection of small or fast-moving targets. The units feature convenience functions such as auto-sensitivity adjustment and advanced features including mutual interference prevention and self-diagnosis function. The amplifiers can be used together with fiber optic cables from Autonics for optimal performance.

BF4R from Autonics is a digital display fiber optic amplifier with NPN output, auto-tune, and beam source: Red LED (660nm).

BF3RX from Autonics comes with the following properties:

  • High-speed response. Max. 0.5ms.
  • Auto-sensitivity setting (button setting)/Remote sensitivity setting.
  • External synchronization input, mutual interference protection, self-diagnosis.
  • Reverse power polarity and short-circuit (over-current) protection circuit.
  • Timer function: selectable none/40ms OFF delay timer (fixed).
    (standard type, remote sensitivity setting type only)
  • Automatically selectable Light ON/Dark ON.
  • Precise detection of small targets and complicated places to install.


Data Sheet

To View Data Sheet Please Click Here
View AllClose

Warranty Information

One Year Warranty
View AllClose

Additional Information

Response frequency:
Max. 0.5ms (frequency 1). Max 0.7ms (frequency 2).
Power supply.:
12-24VDC ±10% (Ripple P-P: Max 10%).
Current consumption:
Max. 45mA.
Light source:
Red LED (Modulated).
Sensitivity Adjustment:
Sensitivity Adjustment button (ON/OFF).
Operation mode:
Automatic selection of Light ON/Dark ON accordance with button setting.
Control output:
NPN/PNP open collector output. Load voltage max. 30VDC. Load current max. 100mA. Residual voltage –NPN: Max. 1V (load current 100mA), Max 0.4V (load current 16mA)/PNP: Max 2.5V.
Self-diagnosis output:
On state under unstable setting (when the target stays for 300ms in the unstable area) On state when control output short-circuited.
Self-diagnosis output:
Load voltage max. 30VDC. Load current max. 50mA. Residual voltage –NPN: Max. 1V (load current 50mA), Max 0.4V (load current 16mA)/PNP: Max 2.5V.
Input of stop transmission function:
External synchronization function:
Remote sensitivity setting function:
Protection circuit:
Reverse polarity protection, output short-circuit (over-current) protection circuit.
Interference prevention function:
Built-in differential frequency mode (set by frequency 1 or 2 by on/off button).
Indicator Operation indicator::
Red LED. Stability indicator: Green LED ON when the target stays in stable sensing level.
Timer function (Selectable):
Built-in OFF delay timer, Approx 40ms fixed.
Insulation resistance:
Min 20MΩ (500VDC mega).
Noise strength:
The square wave noise by noise simulator (Voltage ±240V. period 10ms. Pulse width 1µs).
Dielectric strength:
1000VAC 50/60 Hz for 1 min.
1.5mm amplitude at a frequency of 10~55Hz in each of X, Y, Z directions for 2 hours.
500m/s2 (50G) in X, Y, Z directions for 3 times.
Ambient illumination:
Sunlight: max. 11,000Ꙇx.Incandescent lamp: max. 3000Ꙇx.
Ambient temperature:
-10~+50◦C (at non-freezing status).
Storage temperature:
Ambient humidity:
35~85 RH.
Storage humidity:
35~85 RH.
Case: heat resistant ABS. Cover PC.
Ø4 4-wire, Length: 2M. (AWG22, core diameter: 0.08mm. no. of cores: 60. Insulator out diameter: Ø1.25mm).
Unit weight:
Approx. 65g.
View AllClose