Bently Nevada 126599-01 3500/44M Aero GT I/O Module

Description

The 126599-01 is an Aero GT I/O module with internal terminations manufactured by Bently Nevada for the 3500/44M Aeroderivitive GT Vibration Monitor. Installed in a full-height rear slot of a 3500 rack, the 126599-01 accepts input signals from interface modules (part numbers 86517 and 86497), Velomitors, and accelerometers to monitor aeroderivative gas turbine machinery. The module operates in conjunction with the 3500/44M main monitor module, accepting inputs from two separate Keyphasor signals and routing signals for 1X vibration tracking, band-pass vibration, and signal integration. It includes internal termination connections for transducer inputs, recorder outputs, and inhibit controls.

Features

• Full-height rear I/O module with internal termination wiring headers
• Interfaces with interface modules (PN 86517 and 86497), Velomitors, and accelerometers
• Routes input signals for aeroderivative gas turbine monitoring applications
• Supports dual Keyphasor signal inputs across channel pairs
• Connects directly to the 3500/44M Aeroderivitive GT Vibration Monitor main board via the rack backplane

Applications

• Aeroderivative gas turbine vibration monitoring
• Machinery protection and automated alarm trip systems
• Industrial gas turbine condition monitoring loops

Ordering Information

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Install the module into the full-height rear slot directly behind the 3500/44M main monitor board.
• Secure field transducer and recorder wiring using compatible Euro-style connector headers or push-in spring terminal connectors.
• Connect channel shield wires to the designated SHLD terminals on the I/O block.
• Ensure proper insertion and torque on rear panel retaining screws to secure backplane ground connection.

Compliance and Certifications

• FCC: Complies with part 15 of the FCC Rules
• EMC: European Community Directive 2014/30/EU; Standards EN 61000-6-2, EN 61000-6-4
• Electrical Safety: European Community Directive LV Directive 2014/35/EU; Standard EN 61010-1
• RoHS: European Community Directive ROHS Directive 2011/65/EU
• Maritime: DNV GL rules for classification; ABS Rules for Condition of Classification (Part 1, Steel Vessels Rules, Offshore Units and Structures)
• cNRTLus (Without Internal Barriers): Class I, Zone 2: AEx/Ex nA nC ic IIC T4 Gc; Class I, Zone 2: AEx/Ex ec nC ic IIC T4 Gc; Class I, Division 2, Groups A, B, C, and D; T4 @ Ta = -20 degC to +65 degC (-4 degF to +149 degF)
• cNRTLus (With Internal Barriers): Class I, Zone 2: AEx/Ex nA nC ic [ia Ga] IIC T4 Gc; Class I, Zone 2: AEx/Ex ec nC ic [ia Ga] IIC T4 Gc; Class I, Division 2, Groups A, B, C, and D (W/ IS Output for Division 1); T4 @ Ta = -20 degC to +65 degC (-4 degF to +149 degF)
• ATEX/IECEx (Without Internal Barriers): Ex II 3 G; Ex nA nC ic IIC T4 Gc; Ex ec nC ic IIC T4 Gc; T4 @ Ta = -20 degC to +65 degC (-4 degF to +149 degF)
• ATEX/IECEx (With Internal Barriers): Ex II (1) G; Ex nA nC ic [ia Ga] IIC T4 Gc; Ex ec nC ic [ia Ga] IIC T4 Gc; T4 @ Ta = -20 degC to +65 degC (-4 degF to +149 degF)