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pa18csp20na – photo pr pl m18 npn no+nc,cab
Carlo Gavazzi PA18CSP20NA is an M18 polarised retro-reflective photoelectric sensor with a sensing distance up to 2 m, 10–40 V DC supply, complementary NPN NO+NC outputs and an integral 2 m cable.
This product has been discontinued
A direct replacement is available below.
Replacement product
22621
SKU: PA18CAP50NASA
£43.70 ex VAT
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Why Choose the Carlo Gavazzi PA18CSP20NA Photoelectric Sensor?
The Carlo Gavazzi PA18CSP20NA is a compact polarised retro-reflective photoelectric sensor designed for reliable non-contact object detection in industrial machinery and automation systems. Part of the Carlo Gavazzi PA18CSP20 series, it combines an industry-standard M18 cylindrical PBTP housing with a fixed sensing range and complementary NPN switching outputs.
The PA18CSP20NA uses 660 nm modulated red polarised light together with a suitable reflector. Polarisation helps the sensor distinguish the reflector from other reflective surfaces, improving detection reliability where shiny objects or backgrounds could otherwise cause unwanted reflections.
With a rated sensing distance of up to 2 m, a 10–40 V DC supply, complementary NPN NO+NC outputs and an integral 2 m cable, the PA18CSP20NA provides a practical sensing solution for conveyors, packaging equipment, production machinery and general industrial automation.
Key Advantages
- Compact M18 polarised retro-reflective photoelectric sensor for industrial automation.
- Rated sensing distance of up to 2 m with a suitable reflector.
- Polarised red light improves immunity to unwanted reflections from reflective surfaces.
- NPN NO+NC complementary outputs provide both make and break switching functions.
- 10–40 V DC operating range suits common industrial control systems.
- Integrated reverse-polarity, short-circuit and transient protection.
- IP67 protection supports reliable operation in industrial environments.
Key Features
- Carlo Gavazzi PA18CSP20 series.
- Polarised retro-reflective sensing principle.
- Up to 2 m rated operating distance.
- 660 nm modulated red LED light source.
- NPN complementary NO+NC outputs.
- 10–40 V DC supply voltage.
- Output load capability up to 200 mA.
- Operating frequency of 100 Hz.
- M18 cylindrical PBTP housing.
- Integral 2 m cable.
- LED switching indication.
- IP67 degree of protection.
Reliable Polarised Retro-Reflective Detection for Industrial Automation
Polarised retro-reflective sensors transmit a polarised light beam towards a reflector and monitor the returned light. When an object interrupts this optical path, the sensor changes its output state. The polarisation filter helps distinguish light returned by the specified reflector from reflections produced by shiny targets, supporting reliable detection in challenging applications.
The PA18CSP20NA combines this sensing principle with complementary NPN outputs and a robust M18 PBTP housing. Its fixed sensing range requires no sensitivity adjustment, helping simplify commissioning for machine builders and automation engineers requiring a straightforward industrial sensing solution.
Typical Applications
- Industrial conveyors and material handling systems.
- Packaging and production machinery.
- Detection of reflective or shiny products.
- Object presence and position monitoring.
- Product counting on automated lines.
- Machine sequencing and general industrial automation.
Technical Specifications
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| Coil / Supply Voltage | 10–40 V DC | |
|---|---|---|
| Sensing Mode | Retro-reflective | |
| IP Rating | IP67 | |
| Output Type | NPN | |
| Sensing Principle | Photoelectric - retro-reflective | |
| Sensing Distance | 2000 mm | |
| Output Function | NO + NC | |
| Connection | Cable | |
| Manufacturer | Carlo Gavazzi | |
| Series | PA18CSP20 | |
| Model | PA18CSP20NA | |
| Product type | Photoelectric sensor | |
| Sensing principle | Polarised retro reflective | |
| Rated operating distance | Up to 2 m | |
| Reference reflector | ER4, Ø84 mm | |
| Light source | GaAlAs LED, 660 nm modulated red light | |
| Output Type | NPN | |
| Output function | Complementary NO+NC / make and break switching | |
| Supply voltage | 10–40 V DC | |
| Output load | Up to 200 mA | |
| Operating frequency | 100 Hz | |
| Housing | M18 cylindrical | |
| Housing material | Polyester (PBTP) | |
| Housing dimensions | M18 × 55 mm | |
| Connection | Integral cable | |
| Cable length | 2 m | |
| Protection | Reverse polarity, short circuit and transients | |
| Protection rating | IP67 | |
| Operating temperature | -20 to +60 °C | |
| Indication | Yellow LED | |
| Approvals / marks | CE, UL, CSA |
Frequently Asked Questions
What is the Carlo Gavazzi PA18CSP20NA used for?
The PA18CSP20NA is a polarised retro-reflective photoelectric sensor used for non-contact object detection in conveyors, packaging machinery, production equipment and industrial automation systems.
What sensing distance does the PA18CSP20NA provide?
The sensor provides a rated operating distance of up to 2 m when used with a suitable reflector such as the Carlo Gavazzi ER4.
What outputs does the PA18CSP20NA provide?
The PA18CSP20NA provides complementary NPN NO+NC outputs, giving both normally open and normally closed switching functions.
What supply voltage does the PA18CSP20NA require?
The PA18CSP20NA operates from a 10–40 V DC supply, making it suitable for common industrial DC control systems.
How is the PA18CSP20NA connected?
The PA18CSP20NA is supplied with an integral 2 m cable. As a retro-reflective sensor, it also requires a suitable reflector positioned opposite the sensor.
Trusted by Industrial Automation Engineers
Carlo Gavazzi PA18 photoelectric sensors provide practical and reliable non-contact detection for machine builders, control engineers and automation professionals requiring compact industrial sensing solutions.
