3701/55 323174-01 Bently Nevada ADAPT ESD TMR Overspeed CPU Module In Stock

Short Description:

Triple redundant core processor unit for ADAPT emergency shutdown system, proces

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Product Detail

Triple redundant core processor unit for ADAPT emergency shutdown system, processes speed and analog signals to execute overspeed trip logic, dual Ethernet communication, SIL3 certified safety spare parts for turbine protection

Product Overview

PN: 3701/55 323174-01
Brand: Bently Nevada (Baker Hughes)
Series: 3700 ADAPT ESD Emergency Shutdown System
Type: TMR Overspeed Monitor CPU Main Module
Function: Core computing board of the triple modular redundant safety system. Three identical modules form a 2oo3 voting architecture, receiving pulse signals from speed probes and analog process data, running user-programmable interlock logic, and outputting emergency shutdown relay commands within 2ms when overspeed or abnormal conditions occur. It supports redundant Ethernet for parameter configuration and data uploading, and comprehensive self-diagnosis to detect module faults, wiring errors and power anomalies, guaranteeing safety protection reliability even under single component failure.

Core Features

TMR triple redundant design, conforms to IEC 61508 SIL3 safety integrity level
Dual independent Ethernet ports for redundant network transmission and remote configuration
Supports 6 speed input channels and 32 digital / 12 analog signal acquisition
Customizable trip voting logic: independent trip or two-out-of-three voting mode
Hot pluggable design, replaceable without disconnecting field wiring on matched terminal base
Built-in watchdog and full-range self-test, automatically record fault logs for maintenance troubleshooting
Complies with API 670 standard for turbomachinery overspeed protection specifications

Technical Specifications

Power Supply: 12~32 VDC
Trip Response Time: ≤ 8ms
Relay Contact Rating: 5A@250VAC / 5A@30VDC
Operating Temperature: -40℃ ~ +85℃
Net Weight: 1.45 kg
HS Code: 8538900000
Certifications: CE, SIL3, UL
Product Status: OEM discontinued; brand new original sealed and fully tested refurbished modules available

Compatibility

Matching Terminal Base: 3701/55 289761-01 wiring base assembly
Applicable System: ADAPT ESD emergency shutdown protection rack
Supported Sensors: 3300XL proximity speed probes, magnetic pickup transducers
Upper Connection: Modbus TCP communication with DCS, PLC and monitoring host

Application

Overspeed emergency safety interlock for steam turbines, gas turbines, compressors and expanders in power and petrochemical industries
Critical equipment protection for offshore platforms and chemical production units
System upgrade, spare replacement and routine maintenance of legacy 3700 series ESD overspeed cabinets