ABB 58914444 NDPI‑02 Digital Position Indicator Module

Product Brief Introduction The ABB 58914444 NDPI‑02 is high‑precision digital position indicator module for ABB industrial control system. It receives position sensor input signal, completes high‑precision position measurement, data processing and digital indication function. It communicates with host controller via industrial bus, transmits position measurement data and receives configuration parameters. It applies to mechanical position monitoring and closed‑loop position control occasions under harsh industrial environment.
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Technical Specifications Power Supply: 24 V DC ±10% Power Consumption: ≤2.5 W Input Signal Type: NAMUR, TTL position sensor signal Measurement Accuracy: ±0.05% of reading Galvanic Isolation: Isolation between field I/O circuit and communication circuit Communication Interface: RS‑485, supports Modbus protocol Operating Temperature: ‑25 ℃ to +70 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5%‑95%, non‑condensing Mounting Mode: DIN‑rail mounting or rack mounting Weight: 0.2 kg Protection Class: IP20 for cabinet installation Certifications: CE, RoHS

Functional Features Realizes high‑precision position signal acquisition and position value calculation. Built‑in hardware filter suppresses field electromagnetic interference noise. Provides galvanic isolation between field sensor loop and internal logic circuit. Supports RS‑485 Modbus communication for data upload and parameter configuration. On‑board status LED indicators display power‑on, running and fault alarm status. Supports channel‑level fault diagnosis for sensor open‑circuit and short‑circuit. Compact DIN‑rail installation structure saves cabinet internal space.

Application Scenarios Mechanical equipment travel position monitoring and feedback. Valve opening degree position measurement in process industry. Material handling equipment position signal acquisition cabinet. Automation machinery closed‑loop position control auxiliary measurement unit.

Installation Requirements Mount module onto standard 35 mm DIN‑rail inside control cabinet. Ensure cabinet protective earth connection strictly complies with system grounding specification. Sensor and communication wiring adopt shielded twisted‑pair cables. Separate power cable and signal cable routing. Confirm sensor signal type matches module input specification before power‑on. Ambient installation environment stays within defined temperature and humidity range without condensed moisture. Tighten terminal screws with manufacturer‑recommended torque value to prevent poor contact.

 




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