Emerson Westinghouse P144.R4 eight-channel SPDT Form C relay output module for Ovation DCS system, used for equipment interlock, trip and discrete signal output.

Product Overview

Emerson Westinghouse P144.R4 is an 8-channel Form C relay output module belonging to the Ovation DCS series. It converts controller logic signals into dry contact switching signals. Each channel adopts independent SPDT relay, which can directly drive field loads. It is widely used for ETS trip, MFT protection and important equipment start-stop interlock, a critical safety I/O spare part for power plant control system.

Key Features

• 8 independent SPDT Form C relay output channels
• Optocoupler isolation design, high isolation voltage
• Rated contact: 2A @ 250V AC/DC
• Single-slot rack installation, hot swappable
• Built-in channel diagnosis and fault indication

• Stable for long-term continuous operation in power plant environment

Technical Specifications

• Brand: Emerson Westinghouse
• Model: P144.R4
• Type: Relay Output Module
• System Series: Ovation DCS
• Channel: 8 channels
• Contact Type: SPDT Form C
• Contact Rating: 2A 250V AC/DC
• Isolation Voltage: ≥1500Vrms

• Working Temperature: -20℃ ~ +60℃

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Application

Thermal power plant, combined cycle unit, boiler ETS/MFT protection, auxiliary equipment interlock control, Emerson Ovation DCS system spare replacement.