PNP Single-Output Main Amplifier
The Keyence FS-N11P is a standard single-output digital fiber optic amplifier with a PNP open collector output. Its 100 mA maximum load rating supports compatible industrial PLC inputs and control circuits.
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Keyence
Keyence FS-N11P Fiber Optic Sensor Magnetic Cylinder
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Keyence |
| Model Number | FS-N11P |
| Product Category | Fiber Optic Sensor Amplifier |
| Product Series | FS-N Digital Fiberoptic Sensor Series |
| Manufacturer Product Designation | Fiber Amplifier, Cable Type, Main Unit, PNP |
| Amplifier Type | Standard Single-Output Digital Fiber Amplifier |
| Unit Configuration | Main Unit |
| Number of Control Outputs | 1 |
| Control Output Type | PNP Open Collector |
| Maximum Output Load Voltage | 24 VDC |
| Maximum Output Load Current | 100 mA |
| Maximum Residual Output Voltage | 1 V |
| External Input | Not Provided on FS-N11P |
| Rated Power Supply | 12 to 24 VDC ±10% |
| Maximum Supply Ripple | 10% Peak-to-Peak |
| Normal Power Consumption | 950 mW Maximum |
| Normal Current Consumption at 24 VDC | 39 mA Maximum |
| Normal Current Consumption at 12 VDC | 52 mA Maximum |
| ECO ON Power Consumption | 850 mW Maximum |
| ECO FULL Power Consumption | 520 mW Maximum |
| High-Speed Mode Additional Consumption | 100 mW / 4 mA |
| Light Source | Red Four-Element LED |
| Automatic Power Control (APC) | ON / OFF Selectable; Factory Setting OFF |
| HIGH SPEED Response Time | 50 µs |
| FINE Response Time | 250 µs |
| TURBO Response Time | 500 µs |
| SUPER Response Time | 1 ms |
| ULTRA Response Time | 4 ms |
| MEGA Response Time | 16 ms |
| Mutual Interference Prevention, HIGH SPEED | Not Available |
| Mutual Interference Prevention, FINE | 4 Units |
| Mutual Interference Prevention, TURBO / SUPER / ULTRA / MEGA | 8 Units |
| Expansion Capacity | Up to 16 Connected Units in Total, with Two-Output Units Counted as Two |
| Electrical Connection | Integrated Cable Type |
| Fiber Head | Compatible Fiber Optic Head Selected Separately |
| Sensing Distance | Dependent on Connected Fiber Head and Selected Operating Mode |
| Ambient Operating Temperature | -20 to +55°C for One or Two Additional Units; Derating Applies to Larger Groups |
| Operating Temperature with 3 to 10 Additional Units | -20 to +50°C |
| Operating Temperature with 11 to 16 Additional Units | -20 to +45°C |
| Operating Humidity | 35 to 85% RH, Noncondensing |
| Ambient Light Resistance, Incandescent | 20000 lx Maximum |
| Ambient Light Resistance, Sunlight | 30000 lx Maximum |
| Vibration Resistance | 10 to 55 Hz, 1.5 mm Double Amplitude, 2 Hours per Axis |
| Shock Resistance | 500 m/s², Three Times per Axis |
| Housing Material | Polycarbonate |
| Approximate Product Weight | 75 g |
| Manufacturer Compliance Markings | CE and UL/cUL Listed |
| Related NPN Main Unit | KEYENCE FS-N11N |
| Related PNP Expansion Unit | KEYENCE FS-N12P |
| Related PNP M8 Connector Main Unit | KEYENCE FS-N11CP |
| Related PNP Two-Output Main Unit | KEYENCE FS-N13P |
| Manufacturer Technical Reference | KEYENCE FS-N11P Official Product Specifications: https://www.keyence.com/products/sensor/fiber-optic/fs-n/models/fs-n11p/ |
Key Features
High-Speed 50 µs Detection
Six selectable response modes range from 50 µs in HIGH SPEED mode to 16 ms in MEGA mode. This enables response and sensitivity settings to be selected according to the connected fiber head and application requirements.
12–24 VDC Power Supply
The FS-N11P operates from a rated 12 to 24 VDC supply with a ±10% tolerance. Normal power consumption is specified at 950 mW maximum, with additional ECO modes available for lower consumption.
Red Four-Element LED Source
The amplifier uses a red four-element LED light source. Automatic Power Control can be enabled or disabled to suit the sensing application, and the factory default APC setting is OFF.
Expandable FS-N Architecture
As an FS-N main unit, the amplifier supports connection of compatible expansion amplifiers, with up to 16 units in total subject to model counting, operating temperature and interference-prevention restrictions.
Cable-Type Industrial Installation
The FS-N11P uses an integrated cable rather than an M8 connector. Its polycarbonate housing and selectable operating modes make it suitable for installation with compatible fiber heads in industrial automation equipment.
Applications
- Small component presence detection
- Automated electronic assembly equipment
- Industrial packaging machine sensing
- Conveyor object detection and counting
- Precision part positioning systems
- PLC-connected PNP sensor circuits
- Multi-amplifier fiber optic sensing installations
- Maintenance of KEYENCE FS-N sensor systems
Purchase Information
We support online purchase of the Keyence FS-N11P Fiber Optic Sensor Amplifier. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is the Keyence FS-N11P?
It is a KEYENCE FS-N series digital fiber optic sensor amplifier, configured as a cable-type main unit with one PNP open collector control output.
Is the FS-N11P a PNP or NPN amplifier?
The FS-N11P has a PNP output. The corresponding standard NPN main-unit version is FS-N11N.
What power supply is required?
The rated supply voltage is 12 to 24 VDC ±10%, with a maximum permitted supply ripple of 10% peak-to-peak.
What is the maximum output current?
The FS-N11P has one PNP open collector output rated for a maximum load current of 100 mA and a maximum residual voltage of 1 V.
What response times are available?
The response modes are HIGH SPEED at 50 µs, FINE at 250 µs, TURBO at 500 µs, SUPER at 1 ms, ULTRA at 4 ms and MEGA at 16 ms.
Does the amplifier include a fiber optic sensing head?
The FS-N11P model identifies the amplifier main unit. A compatible fiber optic head should be selected separately unless the seller explicitly includes one.
What is its sensing distance?
The sensing distance depends on the connected fiber optic head, its through-beam or reflective arrangement, the target and the selected amplifier mode. The amplifier alone has no single fixed sensing range.
Does FS-N11P have an M8 connector?
No. The FS-N11P is the cable-type main unit. The FS-N11CP is the corresponding PNP main unit with an M8 connector.
Can the FS-N11P connect to expansion amplifiers?
Yes. Compatible FS-N expansion units may be connected up to a total of 16 units, with two-output units counted as two. Operating temperature and interference restrictions apply.
Does it support interference prevention?
Yes, depending on the response mode. FINE supports four interference-prevention units, and TURBO, SUPER, ULTRA and MEGA support eight. The HIGH SPEED mode does not support this function.
What is Automatic Power Control?
APC is a selectable light-source control function. It can be switched ON or OFF on the FS-N11P and is factory-set to OFF.
What is the difference between FS-N11P and FS-N12P?
The FS-N11P is a PNP main unit, while the FS-N12P is a PNP expansion unit. They have different roles in an FS-N multi-unit configuration.
What is the operating temperature range?
The permitted range is -20 to +55°C with one or two additional units, -20 to +50°C with 3 to 10 additional units, and -20 to +45°C with 11 to 16 additional units.
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