FUJI NP1PH-08/16 PLC Module

This PLC module provides high-speed counter capability for FUJI MICREX-SX automation systems. It captures fast pulse signals from encoders and flow meters. Therefore, it enables precise position and speed monitoring for motion control applications.

Physical and Counter Specifications

The FUJI NP1PH-08/16 measures 13.0 cm in length and 9.5 cm in width. Moreover, its module weight equals approximately 0.32 kg for rack mounting. A single 20-pin removable terminal block handles all field wiring connections. Additionally, this module contains eight independent high-speed counter channels.

Parameter	Specification
Brand	FUJI Electric
Full Model	NP1PH-08/16
Category	PLC Module (High-Speed Counter)
Dimensions (L x W x H)	13.0 cm x 9.5 cm x 6.0 cm (5.12″ x 3.74″ x 2.36″)
Module Weight	0.32 kg (0.71 lbs)
Primary Interface	1 x 20-pin Removable Screw Terminal Block
Backplane Interface	1 x 48-pin Male Connector (MICREX-SX Rack)
Operating Voltage	24 VDC from Backplane (19.2 to 28.8 VDC)
Power Consumption	2.5 W (Typical)
Counter Channels	8 Independent Channels
Input Type	24 VDC or 5 VDC (Selectable per Channel)
Maximum Count Frequency	50 kHz per Channel
Counter Resolution	16 Bits (0 to 65,535 Counts) or 32 Bits (0 to 4,294,967,295)
Counter Modes	Up + Down + Pulse/Direction + Quadrature (x1, x2, x4)
Gate Function	Enable/Disable per Channel (External or Software)
Preset Value	Programmable (0 to Full Scale)
Comparator Outputs	8 (One per Channel, 24 VDC, 0.1 A)
Interrupt Capability	Yes (Upon Reach of Preset Value)
Input Impedance (24V)	4.7 kΩ
Input Impedance (5V)	1.0 kΩ
Input Response Time	0.01 ms (Typical)
On-Board Components	1 Microcontroller + 8 Counter ICs + 16 Optocouplers + 8 Comparator Drivers + 8 Protection Diodes + 1 Voltage Regulator + 1 Oscillator (20 MHz) + 1 Fuse
Energy Storage	3 x 100 µF Electrolytic Capacitors (35V) + 2 x 10 µF Tantalum (25V)
Isolation Rating	1500 Vrms (Inputs to Logic)
Operating Temperature	0°C to +55°C (32°F to 131°F)
Storage Temperature	-25°C to +85°C (-13°F to 185°F)
Mounting Type	MICREX-SX PLC Rack
Status Indicators	1 Green LED (Power) + 1 Green LED (Run) + 8 Yellow LEDs (Channel Activity) + 1 Red LED (Fault)

High-Speed Counting and Channel Features

The FUJI NP1PH-08/16 counts pulses at up to 50 kHz per channel across eight channels. Specifically, each channel operates independently with its own counter IC and configuration. In addition, four counting modes handle various encoder and sensor types for flexibility. Furthermore, the 16-bit or 32-bit resolution accommodates both short and long travel applications. Thus, this module suits high-speed packaging, positioning, and flow metering applications perfectly.

Counter Modes and Configuration Options

This high-speed counter module supports four distinct counting modes for versatility. For instance, Up mode counts forward pulses from a single proximity sensor. In addition, Pulse/Direction mode uses two signals for position and direction tracking. Moreover, Quadrature mode decodes A/B signals from incremental encoders with x1, x2, or x4 multipliers. Additionally, an external gate input enables or disables counting on command per channel. Consequently, you can configure each of the eight channels independently for different tasks.

Comparator Outputs and Interrupt Capabilities

Each counter channel includes a programmable comparator output for precise control. Specifically, when the count reaches a preset value, the output activates automatically. In addition, the module can generate a CPU interrupt at the same moment for fast response. Furthermore, you can set different preset values for each of the eight channels independently. Thus, this module triggers machine actions at exact count positions without CPU polling or delays.

Energy Storage and Operational Stability

This counter module stores energy using five onboard capacitors for power filtering. Specifically, three electrolytic capacitors smooth the 24 VDC supply for stable counter operation. In addition, two tantalum capacitors provide high-frequency noise suppression for counter circuits. Furthermore, these capacitors maintain count integrity during brief power interruptions. Therefore, the FUJI NP1PH-08/16 prevents count loss in noisy industrial environments reliably.

Installation and Diagnostic Indicators

Eleven LED indicators provide operational status at a glance on this module. First, a green Power LED lights when the 24 VDC backplane supply is present. Second, a green Run LED indicates normal module operation and configuration. Third, eight yellow Channel Activity LEDs flash each time a channel detects an input pulse. Finally, a red Fault LED signals hardware errors or configuration issues. Thus, you can diagnose counter status instantly without external tools or oscilloscopes.