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TAKEX_DLN

BGS/FGS Switchable Photo Sensors

  • TAKEX DLN Series fixed-field reflective sensors provide switchable BGS/FGS operation with sensing ranges up to 300 mm.
  • The series features a 660 nm red LED,
  • NPN/PNP dual outputs, 0.5 ms response, automatic interference prevention, cable or M8 connection, and IP67 protection.
  • Brand TAKEX Takenaka Engineering Co., Ltd.
Features
  • Switchable BGS/FGS operation: Background suppression ignores objects and backgrounds beyond the setting distance, while foreground suppression detects targets by recognizing changes against a stable background.
  • Wide sensing range selection: Short-range models are available for 30, 40, 50, and 100 mm, while middle-range models cover 100, 150, 200, and 300 mm.
  • High-visibility red light: A 660 nm four-element red LED provides a visible sensing spot for easier targeting and setup.
  • NPN/PNP dual outputs: Each sensor provides both NPN and PNP open-collector outputs, allowing one output type to be selected for the control system.
  • Automatic interference prevention: Automatic pulse shifting helps reduce mutual interference when two sensors are installed next to each other.
Specification
ItemSpec.
Product typeBGS/FGS switchable photo sensor
Detection methodFixed-field reflective
TypesShort range, middle range
Short-range detecting distance10–30 mm, 10–40 mm, 10–50 mm, 10–100 mm
Middle-range detecting distance10–100 mm, 10–150 mm, 10–200 mm, 20–300 mm
Power supply12–24VDC, ripple 10% or less
Current consumptionShort-range models: 16 mA or less;
middle-range models: 18 mA or less
Operation modeLight-ON / Dark-ON selectable
Detection modeBGS / FGS selectable
Light sourceFour-element red LED, 660 nm
Response time0.5 ms or less
Hysteresis5% of detecting distance or less
Operation indicatorOrange LED
Stability indicatorGreen LED
Case materialPBT
Lens materialPolycarbonate
Ambient light5,000 lx or less
Operating temperature−25 to +55°C, non-freezing
Ambient humidity35–85% RH, non-condensing
Protective structureIP67

Specification notes

  • BGS mode is suited to applications where the background is beyond the setting distance. FGS mode recognizes a stable background and detects changes caused by the target.
  • Distance is adjusted with a 5-turn endless potentiometer. Distance-setting specifications use 50 × 50 mm white paper for short-range models and 100 × 100 mm white paper for middle-range models.
  • NPN and PNP outputs must not be used simultaneously. Automatic interference prevention performance should be verified under actual installation and target conditions.
FAQ

Q1: What is the TAKEX DLN Series?
A: The DLN Series consists of fixed-field reflective photo sensors with selectable background suppression and foreground suppression operation.


Q2: What is the maximum detecting distance?
A: The maximum detecting distance is 300 mm, with multiple models covering 30 to 300 mm ranges.


Q3: When should BGS mode be used?
A: BGS mode is suitable when the background is located beyond the set sensing distance.


Q4: When should FGS mode be used?
A: FGS mode is suitable when a stable background is available and the sensor detects changes caused by a target in front of it.


Q5: Does the DLN Series provide both NPN and PNP outputs?
A: Yes. Both outputs are provided, but they must not be used simultaneously.


Q6: What is the response time?
A: The response time is 0.5 ms or less.


Q7: What light source is used?
A: The series uses a 660 nm four-element red LED.


Q8: Does the DLN Series include mutual interference prevention?
A: Yes. Automatic mutual interference prevention is provided for installations with up to two adjacent sensors, subject to installation conditions.


Q9: What connection types are available?
A: Attached-cable and M8 connector models are available.


Q10: What applications are suitable for the DLN Series?
A: Applications include silicon wafer detection, wafer carrier detection, printing processes, CD presence detection, tile inspection, bobbin detection, and other object presence or position checks.

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