FUJI NJ-BE5/BE8 PLC I/O Module | 16 Inputs or 16 Outputs

Physical Dimensions and Mechanical Layout

The FUJI NJ-BE5/BE8 provides flexible I/O expansion for FUJI PLC systems. This module measures 120mm in height, 65mm in width, and 80mm in depth. You can mount this unit directly onto a 35mm DIN rail inside any control cabinet. The module weighs 0.38 kilograms , simplifying one-person installation tasks.

Internal Architecture and Component Count

The FUJI NJ-BE5/BE8 contains 96 surface-mount components on a four-layer PCB. Five low-impedance electrolytic capacitors form the main energy storage network. Additionally, twelve chip resistors and eight signal diodes support channel isolation. The BE5 variant uses 16 input channels, while the BE8 variant provides 16 output channels.

Energy Storage and Signal Retention

This module stores 18.7 joules across its five capacitor bank for signal buffering. This energy reserve maintains output state memory for 35 milliseconds during power dips. Consequently, critical outputs remain active through brief voltage sags. The storage also powers six LED status indicators for 25 seconds after shutdown.

Parameter	NJ-BE5 (Input)	NJ-BE8 (Output)	Unit
Dimensions (H x W x D)	120 x 65 x 80	120 x 65 x 80	mm
Weight	0.38	0.38	kg
Total components	96	96	pieces
Energy storage	18.7	18.7	J
Hold-up time	35	35	ms
Number of channels	16	16	channels
Nominal voltage	24	24	V DC
Input impedance	3.9	N/A	kΩ
Output type	N/A	Transistor (sink)	–
Output current per point	N/A	0.5	A
Response time (ON/OFF)	1.5	0.3	ms
LED indicators	16	16	units

Interface and Connectivity Details

The FUJI NJ-BE5 features spring-clamp terminals for all 16 input field wires. The FUJI NJ-BE8 uses the same termination style for its 16 output channels. A single 40-pin IDC connector links the module to the PLC backplane. Each terminal accepts AWG 24 to AWG 16 solid or stranded wire.

Signal Processing and Protection

The NJ-BE5 input variant includes 1.5ms hardware debouncing for clean signal acquisition. This filter eliminates false triggers from mechanical switch chatter. The NJ-BE8 output variant provides short-circuit protection on every channel. Furthermore, both modules feature optical isolation rated at 1500V AC between field and logic sides.

Electrical Specifications and Power Consumption

The FUJI NJ-BE5/BE8 draws only 25mA from the backplane at 24V DC. External field power consumption varies based on active channel count. The input module consumes 4mA per active channel through the 3.9k impedance. The output module needs 50mA external supply current plus 0.5A per energized output.

Environmental Compliance and Mounting Notes

You can operate both variants from 0°C to 55°C ambient temperature without forced air. The modules tolerate 10% to 90% relative humidity , non-condensing. Please maintain 50mm space above and below for natural convective cooling. These units meet CE and RoHS standards for global industrial applications.