Fuji NC1X1604 Digital Input Module

The Fuji NC1X1604 accepts sixteen discrete 24V DC input signals. This standard module fits perfectly into NC1 series PLC systems. It connects field sensors directly to the backplane for fast processing. Control engineers trust this unit for reliable machine interfacing.

Complete Technical Specifications

Parameter	Specification
Dimensions (W x H x D)	82 mm x 90 mm x 55 mm
Weight	0.27 kg
Number of Input Points	16 channels
Input Type	24V DC sink/source
Input Voltage Range	10–30V DC
Input Current per Channel	6 mA typical
ON Voltage Threshold	≥15V DC
OFF Voltage Threshold	≤5V DC
Response Time (ON to OFF)	1.5 ms maximum
Response Time (OFF to ON)	1.5 ms maximum
Internal Energy Storage	220 µF capacitor
Isolation Method	Optocoupler per channel
Power Consumption	2.2 W typical
Terminal Type	20‑pin spring clamp
LED Indicators	16 red status LEDs

Physical Layout and Connection Details

The Fuji NC1X1604 weighs only 0.27 kilograms for lightweight mounting. Its 82 mm width occupies a single slot on the base board. Sixteen input channels appear on a 20‑pin spring clamp terminal block. Each channel includes a red status LED for visual confirmation. A 220 µF capacitor filters supply voltage fluctuations effectively. The module uses optocouplers to isolate every input from the backplane.

Input Characteristics and Signal Processing

Each channel accepts voltages from 10V up to 30V DC. The module recognizes any signal above 15V as logic high. Similarly, signals below 5V register as logic low. The response time reaches just 1.5 milliseconds for both transitions. Therefore, this unit captures standard sensor signals without missing events. The 6 mA input current suits most proximity switches and push buttons.

Installation and Wiring Guidelines

Mount the Fuji NC1X1604 into any NC1 series base slot. First, disconnect system power completely before handling. Then connect each sensor wire to the designated terminal. Use a common 24V source for all sink/source configurations. The module accepts both NPN and PNP sensor types. After wiring, apply power and verify each LED lights correctly. Finally, test every channel with a signal generator.

System Integration and Application Notes

This input module works with all NC1 series CPUs and power supplies. It occupies one slot regardless of the 16 channel count. Typical applications include limit switch monitoring and push button panels. The unit also suits conveyor jam detection and guard door interlocks. For expanding beyond 16 points, add a second NC1X1604 module.