FUJI XS03502 XS03503 KEYENCE FU-2897 Fiber Sensor for NXT II

FUJI XS03502 XS03503 KEYENCE FU-2897 fiber sensor is designed for corresponding FUJI NXT II SMT mounter detection positions. It supports reliable PCB presence and conveyor position sensing during automatic board transfer. Suitable for machine maintenance, replacement and spare inventory. Exact part number and installation position should be confirmed before ordering.

II. Complete Product Description

FU-2897 Optical Fiber Sensor for FUJI NXT II PCB Conveyor Detection

Product Overview

The FUJI XS03502 XS03503 KEYENCE FU-2897 Fiber Sensor is an optical sensing component used in corresponding FUJI NXT II SMT pick-and-place machine applications. It is mainly associated with PCB conveyor, track and transfer-position detection, helping the machine identify board presence during automated production.

Reliable detection is important because the conveyor system must correctly determine when a PCB reaches or leaves a specific position before the next machine sequence begins. If the installed fiber sensor becomes contaminated, damaged, misaligned or unstable, PCB transport may stop unexpectedly or generate detection-related alarms.

This sensor is suitable for FUJI NXT II machine repair, preventive maintenance, used-equipment refurbishment and spare-parts inventory. Because XS03502 and XS03503 are separate FUJI references, customers should confirm the existing part number, machine configuration and installation location before placing an order.

Cause

Why Does a FUJI NXT II Fiber Sensor Need Replacement?

Fiber sensors operate continuously during SMT production. Although they are compact components, their condition can directly affect PCB transfer stability.

Typical causes of failure include:

Contamination

PCB transport sections may accumulate dust, flux residue or other production contamination. If the fiber tip becomes dirty, light transmission can be reduced and detection may become unstable.

Mechanical Damage

Optical fiber cables are relatively slim. Excessive pulling, crushing or bending during machine servicing can damage the internal fiber structure.

Incorrect Position

Fiber sensing depends on proper positioning. Even a functional sensor may produce unreliable results if the sensing end moves away from the correct PCB detection point.

Aging Components

Factories running two or three shifts place significant operating hours on conveyor sensors. Keeping replacement sensors available can reduce downtime when a failure occurs.

Solution

Replacing an unstable fiber sensor with the correct model can restore reliable PCB presence and position detection.

For best results, replacement should not be based only on physical appearance. Similar fiber sensors may differ in part number, fiber length, installation route or machine position.

Recommended Replacement Process

For international buyers, sending clear photographs of the existing sensor is recommended. A photo of the part number, complete fiber assembly and installation position can greatly improve identification accuracy.

Specifications

Model Selection Reference

XS03502 and XS03503 are related FUJI fiber-sensor references but should not automatically be treated as the same item.

The safest purchasing method is to match the number already installed on the machine.

Application

FUJI NXT II SMT Mounter

The sensor is intended for corresponding sensing positions in FUJI NXT II SMT production equipment.

Its main role is associated with detecting the presence or movement of a PCB during automatic transport.

PCB Conveyor Detection

During normal SMT production, PCBs move through different machine stages.

A fiber sensor may be positioned at a defined conveyor location to detect whether the board has reached the required point.

Once detection information is received, the machine can continue the programmed transfer sequence.

PCB Presence Detection

Reliable PCB presence sensing helps prevent incorrect machine sequencing.

If a board is not detected correctly, the system may pause production because the machine cannot confirm whether the transfer stage has been completed.

Machine Repair

The XS03502 / XS03503 fiber sensor can be considered when technicians identify a damaged, contaminated or unstable optical sensing component during FUJI NXT II maintenance.

Preventive Maintenance

Maintenance teams may replace aged sensors before complete failure when repeated sensing instability appears.

This can help avoid unexpected downtime during scheduled production.

Spare Parts Inventory

Factories using multiple FUJI NXT II machines may keep commonly required sensors in stock.

Fiber sensors are relatively small parts, but lack of a replacement can stop PCB transportation until the correct component arrives.

Typical Industries

How It Works

The FU-2897 fiber sensor works through optical detection.

A fiber element guides light toward the sensing location. When a PCB or related target enters the detection area, the optical condition changes.

The sensing system recognizes this change and provides a signal used by the machine control sequence.

Basic Operating Sequence

1. PCB enters the conveyor area.

The board moves toward the defined sensing position.

2. The target reaches the fiber sensor.

The presence of the PCB changes the transmitted or reflected light condition.

3. The sensing system identifies the change.

The optical information is converted into a detection signal.

4. The machine receives confirmation.

The control system recognizes that the PCB has reached the expected position.

5. The next operation begins.

The machine can continue board transfer or the next production process according to its program.

Why Fiber Sensors Are Suitable for SMT Equipment

Optical fibers are useful inside compact SMT machines because the sensing end can be installed in areas with limited space.

How To Choose

1. Check the Original Part Number

First identify whether the installed part is:

XS03502

or

XS03503

Do not select only according to the word "FU-2897."

2. Confirm the Machine

Provide the complete machine information:

Brand: FUJI

Series: NXT II

If available, also provide the machine module or production-line position.

3. Confirm the Installation Location

Useful information includes:

• Conveyor entrance.
• Conveyor exit.
• PCB transfer section.
• Rail sensing point.
• Internal transport mechanism.

Different positions may use similar-looking fiber sensors.

4. Check the Fiber Length

Fiber length is important.

A sensor with the correct optical function but incorrect cable length may not fit the original routing position.

5. Compare the Existing Component

Before installation, compare:

• Part number.
• Fiber shape.
• Cable length.
• Sensing end.
• Mounting position.
• Routing direction.

6. Send Photos When the Number Is Unclear

For accurate identification, please provide:

This is particularly useful for older machines where the original label may be difficult to read.

Ordering Guide

For faster quotation, prepare the following information:

Clear information allows the supplier to verify the product before quotation.

Maintenance Recommendations

Keep the Fiber Clean

Dust on the sensing point can reduce detection stability.

Inspect and clean the sensing area during regular machine maintenance.

Avoid Sharp Bending

Do not bend the fiber cable beyond its normal installation route.

Excessive bending may affect optical transmission.

Do Not Pull the Fiber

When removing or installing the part, handle the component carefully instead of pulling directly on the fiber.

Check Alignment

After installation, verify the sensor is correctly aligned with the PCB detection position.

Test Before Full Production

Run a PCB transfer test after replacement and confirm stable detection before returning the machine to full production.

FAQ

Q1. What machine is the XS03503 FU-2897 fiber sensor used for?

The XS03503 FU-2897 fiber sensor is used in corresponding FUJI NXT II SMT mounter applications, mainly for optical detection associated with PCB conveyor, track and transfer mechanisms.

Q2. Are XS03502 and XS03503 interchangeable?

They should not automatically be considered interchangeable. They are separate FUJI references. Please verify the existing part number, machine configuration, fiber length and installation position before purchasing.

Q3. What is the main function of this sensor?

Its main function is optical PCB presence or position detection. The detection information supports the automatic conveyor sequence and helps the machine coordinate PCB transfer during SMT production.

Q4. What information is required before ordering?

Please provide the FUJI machine model, original part number, required quantity, installation position and clear photos of the existing sensor. Fiber length information is also recommended.

Q5. Can this product be purchased as a maintenance spare?

Yes. Fiber sensors are practical preventive-maintenance spare parts for factories operating FUJI NXT II machines, especially where continuous production makes rapid replacement important.

Contact Us

Need a replacement FUJI XS03502, XS03503 or KEYENCE FU-2897 fiber sensor for your NXT II machine?

Please send us your part number, machine model, quantity and original sensor photos. We can assist with product identification before quotation and help reduce the risk of purchasing an incorrect sensor.

We support requirements for single replacements, maintenance stock and batch SMT spare-parts purchasing.

Send your inquiry for price, availability, condition options, lead time and shipping information.