FUJI NP1F-PI4 Function Module – Four-Channel Pulse Input for SPH Controllers

Board Overview

This function module captures high-speed pulse signals from encoders and flow meters. You can install FUJI NP1F-PI4 directly into FUJI SPH series PLC racks. The unit processes four independent pulse input channels simultaneously. It counts pulses without burdening the main CPU with real-time tasks.

Technical Specifications

Board Layout and Components

The PCB arranges four independent counter circuits in a parallel layout. Each channel includes programmable debounce filters for noise rejection. Additionally, 134 discrete components handle signal shaping and isolation. The differential inputs reject common-mode noise effectively. Consequently, you get accurate counts even in electrically noisy industrial environments.

Installation Process

You can mount FUJI NP1F-PI4 into any standard SPH series rack slot. The backplane connector provides both power and data communication. Furthermore, a front panel terminal block accepts field wiring for all four channels. LED indicators show pulse activity for each input clearly.

Performance Advantages

This module accepts input frequencies up to 100 kHz per channel independently. Each channel supports both RS-422 differential and 24V single-ended signals. Therefore, it connects to most incremental encoders and flow sensors directly. The 32-bit counters also handle long accumulation periods without overflow.

Safety and Compliance

FUJI NP1F-PI4 meets CE and RoHS industrial standards. The board stores negligible electrical energy after system power-down. Hence, technicians face no capacitor discharge risks during maintenance.