Valmet A413162

Product Name: Digital Input Module for Valmet DNA DCS

Product Description: This is rack‑mount digital input I/O module of Valmet DNA distributed control system, used for collecting on‑site switch‑state signals from field sensors, limit switches, relay auxiliary contacts, convert field discrete signal into digital data and transmit to DCS CPU module.

Category:
Description

Technical Specifications: Power supplied by DCS rack back‑plane bus, multi‑channel isolated digital input, support standard industrial dry‑contact or DC‑voltage field signal, communicate with CPU via proprietary DNA system bus.

Functional Features: Channel‑level optical isolation, per‑channel LED status indication, open‑circuit fault diagnosis, over‑voltage protection for each input channel, support module‑level hot‑swap under redundant system condition.

Application Scenarios: Paper‑mill auxiliary equipment signal collection, power‑plant auxiliary system switch‑signal acquisition, chemical‑plant on‑site discrete‑signal monitoring, metallurgy workshop equipment status collection.

Performance Parameters: Operating temperature 0 ℃ ~ +55 ℃, IP20 protection grade, compliant with CE EMC requirement, input channel over‑voltage withstand capability conforming to industrial standard.

Material Composition: Flame‑retardant metal‑reinforced housing, multi‑layer printed circuit board, optical‑coupler isolation components, gold‑plated back‑plane connector.

Structural Features: Standard rack plug‑in unit, front‑side channel status LED indicator, rear‑edge back‑plane bus connector, mechanical locking buckle, match Valmet DNA series chassis slot dimension.

Working Principle: Field switch signal access input channel, realize electrical isolation between field side and DCS internal circuit through optocoupler component, convert contact‑state change into digital logic signal, transmit digital input data to CPU module via system back‑plane bus for logical processing.

Installation Requirements: Insert module into designated slot of Valmet DNA chassis, fasten locking buckle, connect field signal to corresponding terminal base matching this module, confirm back‑plane bus contact reliable, complete hardware slot‑address identification by system.

Usage Notes: Do not exceed allowable input voltage range of each channel, strictly separate field high‑voltage signal and input wiring, avoid corrosive gas and heavy‑dust environment, replace matched terminal base together when replacing module.

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