FUJI NR1SX-1606DT I/O Terminal | 16 Channels Spring-Clamp

Physical Dimensions and Mounting Specifications

The FUJI NR1SX-1606DT serves as a dense I/O terminal for field signal aggregation. This unit measures 110mm in height, 45mm in width, and 65mm in depth. You can mount this terminal directly onto 35mm DIN rails inside standard enclosures. The terminal weighs only 0.22 kilograms for easy handling during installation.

Internal Architecture and Component Count

This I/O terminal integrates 16 discrete signal channels into a single compact housing. Each channel uses a spring-clamp wire termination for vibration-resistant connections. The internal PCB contains 64 individual components, including resistors, diodes, and suppression circuits. Four multilayer ceramic capacitors provide localized energy buffering for each group of four channels.

Energy Storage and Electrical Parameters

The FUJI NR1SX-1606DT includes two electrolytic capacitors with a total storage of 14.5 joules. This energy reserve supports LED status indication for up to 30 seconds after power removal. Furthermore, the terminal consumes only 15mA from the backplane at 24V DC nominal. Each input channel presents a 4.7k ohm impedance to field devices.

Parameter	Value	Unit
Number of channels	16	–
Termination type	Spring-clamp	–
Wire gauge range	AWG 24–16	–
Nominal voltage	24	V DC
Voltage range	10–30	V DC
Input impedance per channel	4.7	kΩ
Backplane current draw	15	mA
Total energy storage	14.5	J
Indicator hold-up time	30	seconds
Component count on PCB	64	pieces
Dimensions (H x W x D)	110 x 45 x 65	mm
Weight	0.22	kg
DIN rail type	35mm (top hat)	–
Operating temperature	-10 to +55	°C

Interface and Connectivity Features

This terminal provides one 20-pin ribbon cable connector for PLC backplane communication. Additionally, you will find 16 LED indicators on the front panel for per-channel status monitoring. The spring-clamp mechanism accepts solid or stranded wires without special tools. Each clamp opens with a standard screwdriver for quick field modifications.

Signal Processing and Protection

The FUJI NR1SX-1606DT filters incoming signals with a 0.5ms hardware debounce circuit. This design eliminates false triggering from mechanical switch bounce. The terminal also provides reverse polarity protection across all input channels. A transient voltage suppression diode clamps spikes above 36V to protect downstream circuits.

Application and Compatibility Notes

You can pair this terminal with FUJI SPH series PLCs for remote I/O expansion. The terminal requires no external power supply when connected to a compatible backplane. Furthermore, the unit supports both NPN and PNP field sensors through its flexible input design.