Fuji NP1X1606-W

The Fuji NP1X1606-W is a 16-point DC input expansion module for the MICREX-SX series PLC. It accepts 24 VDC field signals and provides digital input status to the CPU. The module is used in control panels where additional input points are required.

Yueyang Tongtu supplies this module as an industrial automation spare part. The company maintains stock of Fuji MICREX-SX components and supports sourcing for older or discontinued part numbers. Pre-shipment inspection and compatibility confirmation are available.

Product Identification

Technical Specifications

The values above are based on the information provided by the product source. For detailed engineering parameters such as operating temperature, storage temperature, dimensions, and weight, refer to the official Fuji Electric MICREX-SX technical documentation. If the official datasheet is available, it should be used as the primary reference.

Technical Source: Fuji Electric MICREX-SX series documentation and product manual. Where discrepancies exist, the official manufacturer data takes precedence.

Design and Hardware Features

The NP1X1606-W is part of the MICREX-SX modular I/O system. The module uses a compact housing to save control panel space. It connects to the system through the expansion interface and provides screw terminals for field wiring.

The input circuit accepts standard 24 VDC signals from sensors, switches, and relay contacts. The response time of approximately 10 ms is suitable for general digital input applications.

Field Maintenance and Troubleshooting

Routine Maintenance

1. Keep the ventilation openings free of dust and debris. Accumulated dust can reduce heat dissipation and lead to premature component aging.
2. Check the screw terminals periodically. Vibration and thermal cycling can cause connections to loosen over time.
3. Verify that the terminal cover is installed after wiring. The IP20 protection rating depends on the cover being in place.

Common Fault Checks

If an input point does not register correctly:

1. Confirm the field device is supplying 24 VDC to the input terminal.
2. Check the wiring from the terminal block to the module. A loose screw or broken wire is a frequent cause.
3. Verify the input indicator LED for the corresponding channel. If the LED is on but the CPU does not read the signal, the issue may be in the expansion communication.
4. If the LED is off while the field signal is present, the input point may be damaged or the common terminal may be disconnected.
5. Swap the field wiring to a known working input point. If the signal follows the field device, the original input point is faulty.

Product Evidence and Inspection

To support product verification, the following items can be provided or confirmed before shipment:

• Actual module photos (front, back, terminal side)
• Nameplate and part number photo
• Pre-shipment inspection record
• Packaging condition photo

The availability of these items depends on current stock and batch. Please request them when confirming the order.

Pre-Shipment Inspection Checklist

Frequently Asked Questions

Q1: How do I confirm the NP1X1606-W is compatible with my MICREX-SX system?

A: Provide the CPU model and a photo of the existing module. We will check the expansion interface and system configuration before shipment.

Q2: What is the difference between the 7 mA input current and the 35 mA applicable signal?

A: The 7 mA is the typical current drawn by the module input circuit when 24 VDC is applied. The 35 mA is the maximum current rating for the field signal source. The exact meaning of these values should be confirmed from the official Fuji Electric datasheet.

Q3: Can this module be hot-swapped?

A: The NP1X1606-W is not designed for hot swap. The system power should be turned off before removing or inserting the module to avoid damage.

Q4: What should I check if an input point stops working?

A: First verify the field signal is present at the terminal. Then check the wiring and the input indicator. If the LED is on but the CPU does not read the signal, check the expansion communication. If the LED is off, the input circuit may be damaged.

Q5: Is the NP1X1606-W still available?

A: Availability depends on current manufacturer production status and distributor inventory. Please contact us with the required quantity and delivery location so we can check current sourcing options.

Q6: Can I use this module with a different Fuji PLC series?

A: The NP1X1606-W is specific to the MICREX-SX series. It is not compatible with other Fuji PLC families. The CPU model must be confirmed before ordering.

Supplier Information

Yueyang Tongtu E-commerce Co., Ltd. has supplied industrial automation spare parts for over 20 years. The company focuses on PLC, DCS, and machinery monitoring systems, and maintains stock of Fuji MICREX-SX components.

• Business Scope: Industrial automation spare parts, including PLC modules, I/O units, DCS system components, and discontinued control-system parts.
• Quality Control: All products are checked for part number, physical condition, and connector integrity before shipment. Third-party inspection is accepted.