The LCS-1Q54P-F10PNO-K020P from Leuze electronic GmbH + Co. KG is a high-performance capacitive sensor designed for precise detection of various materials regardless of their optical properties. With a rugged and compact design, this sensor is ideal for embedded installation in automation and industrial systems.
Part Number: 50135743
Model: LCS-1Q54P-F10PNO-K020P
Sensor Type: Capacitive Sensor
Manufacturer: Leuze electronic GmbH + Co. KG, Germany
Series: LCS-1
Switching Distance (Sn): Adjustable from 1 to 10 mm
MTTF (Mean Time To Failure): 1,080 years
Rated Operating Current: 200 mA
Switching Frequency: 100 Hz
Supply Voltage (UB): 10 to 30 V DC
Open-circuit Current: 15 mA
Residual Ripple: 0–10% of UB
Short Circuit Protected: Yes
Polarity Reversal Protected: Yes
Number of Switching Outputs: 1 (Digital, PNP)
Switching Principle: Normally Open (NO)
Switching Element: Transistor
Voltage Type: DC
Design: Cubic
Dimensions (W x H x L): 54 mm x 20.3 mm x 5.5 mm
Installation Type: Embedded
Net Weight: 40 g
Housing Material: Plastic (Polypropylene - PP)
Sensing Face Material: Plastic (PP)
Connection Type: Cable
Cable Length: 2,000 mm (2 m)
Sheathing Material: PUR
Conductors: 3-wire
Wire Cross Section: 0.14 mm²
Cable Color & Assignment:
Brown: 10–30 V DC
Black: Output (Signal OUT)
Blue: GND
Operating Temperature Range: -25°C to +70°C
Protection Class: III
Degree of Protection: IP67
Approvals: c UL US
Standards: IEC 60947-5-2
LED Indicators:
Green LED: Device Ready
Yellow LED: Switching State
Operational Control: 11-turn Multiturn Potentiometer (for sensitivity adjustment)
Switching Distance Adjustment: Yes
| Material | Correction Factor |
|---|---|
| Water | 1.00 |
| Ethylene Glycol | 0.93 |
| Glycerin | 0.98 |
| Alcohol | 0.85 |
| Ammonia | 0.70 – 0.85 |
| Oil-Containing Paper | 0.25 |
| Wood (Wet) | 0.60 – 0.85 |
| Wood (Dry) | 0.10 – 0.40 |
| Rubber | 0.15 – 0.90 |
| Air / CO₂ | 0 |
| Various Plastics | 0.1 – 0.5 |
| Others | Refer datasheet |
LCS-1Q54P-F10PNO-K020P is decoded as:
LCS: Capacitive sensor
1: Series 1 (Extended)
Q54: Cubic, 54 mm length
P: Plastic housing
F10: Range limit 10.0 mm (embedded)
P: PNP
NO: Normally open
K: Cable
020: 2,000 mm length
P: PUR cable material
Customs Tariff Number: 85365019
ECLASS (5.1.4 to 15.0): 27270102 / 27274201
ETIM (5.0 to 10.0): EC002715
Active sensing area: Diameter Ø20 mm
Minimum Mounting Distances:
B: 20 mm
D: 40 mm
G: 60 mm
S: 30 mm
W: 30 mm
This device is not a safety sensor and is not intended for personnel protection.
Only qualified personnel should operate the device.
Adjusting sensor sensitivity affects standard performance specifications.
The Leuze LCS-1Q54P-F10PNO-K020P capacitive sensor provides reliable and adjustable sensing capabilities, ideal for diverse applications in industrial automation. With high durability, multiple certifications, and broad material detection through correction factors, this sensor stands out as a robust and adaptable sensing solution.
| Issue | Possible Cause | Recommended Action |
|---|---|---|
| 1. No power LED (Green) ON | No power supply or incorrect wiring | Check 10–30V DC supply and verify correct wire connections (Brown = +V, Blue = GND) |
| 2. Yellow LED not turning ON despite target presence | Target material not within switching range or wrong correction factor | Adjust sensitivity via the potentiometer; verify material compatibility using correction factor chart |
| 3. False triggering (switching without target) | Too high sensitivity or environmental interference | Reduce sensitivity using the potentiometer; check for vibration or electrical noise |
| 4. Sensor does not detect target | Target out of range or target not detectable by capacitive principle | Move target within range (1–10 mm); verify the dielectric constant of the target material |
| 5. Intermittent output | Loose connection or unstable power supply | Inspect and secure all wiring and check for power ripple (must be within 0–10%) |
| 6. Output always ON | Sensor is too sensitive or contamination on sensing face | Decrease sensitivity; clean sensor face with non-abrasive cloth |
| 7. Output always OFF | Sensor not detecting target or output damaged | Increase sensitivity; verify output circuit; check for 200 mA max load limit |
| 8. LED glows but no signal to PLC | Wrong output wiring or PLC input configuration | Check Black wire connection to PLC input; verify PNP configuration in PLC |
| 9. Sensor overheating | Overload on output or ambient temperature too high | Reduce load to within 200 mA; ensure temperature is between -25°C to +70°C |
| 10. Short circuit protection triggering | Load or wiring shorted | Inspect wiring and load for faults; remove short and restart sensor |
| 11. Sensor not fitting in mounting | Incorrect mounting type or interference | Ensure embedded mounting clearance as per sensor dimensions |
| 12. Sensitivity adjustment ineffective | Potentiometer damaged or at limit | Try full range rotation (11 turns); replace sensor if unresponsive |
| 13. LED indicators not working | Internal failure or no power | Check power and sensor status; replace sensor if LEDs are dead |
| 14. Sensor not detecting specific material | Low correction factor for that material | Refer to correction factor table; increase sensitivity or change target orientation |
| 15. Damage during cleaning | Use of aggressive chemicals on sensor face | Use only compatible cleaning agents; avoid acetone and solvents |
| 16. Signal unstable in wet environments | Water interference or condensation | Use sensor with protection against moisture; increase switching distance margin |
| 17. Sensor affected by nearby devices | Electromagnetic interference | Relocate sensor or shield signal wires; use twisted pair wiring |
| 18. Cable damage | Mechanical stress or sharp bending | Ensure proper cable routing and minimum bend radius |
| 19. Wrong installation height | Sensor face not aligned properly | Ensure sensing face is parallel to target surface within specified range |
| 20. Loose mounting causing vibration | Mount not secured properly | Use anti-vibration mount or firmly fasten using recommended mounting kit |
| 21. Sensor triggered by dust | High sensitivity with powder materials | Adjust sensitivity or add mechanical shielding |
| 22. Sensor failure after voltage spike | Overvoltage or surge | Install surge protection in supply line |
| 23. Inconsistent switching on varying materials | Different dielectric properties | Recalibrate or choose different sensor model for multi-material use |
| 24. No output in cold environments | Operating below -25°C | Ensure environment is within operating temp range |
| 25. LED flickers without switching | Power fluctuation or noise | Use regulated power supply and proper grounding |
| 26. Output response delay | Slow target movement or incorrect wiring | Check response time and switching frequency (100 Hz); verify wiring |
| 27. Signal line affected by long cable | Signal degradation or interference | Use shorter cable or signal amplifier for long distances |
| 28. No detection through thin container wall | Material thickness blocks sensing | Reposition sensor or increase sensitivity |
| 29. Sensor detecting through unintended objects | High sensitivity picking background | Lower sensitivity; add shield between sensor and background |
| 30. PLC reads fluctuating input | Sensor bounce or low debounce in logic | Implement debounce logic in PLC or add capacitor in circuit |