Description

The BENTLY 135473-01 is a high-density,16-channel relay output module engineered by Bently Nevada(a Baker Hughes company)for the 3500 Machinery Protection System.Designed as the 3500/33 series interface card,it translates alarm and trip logic from monitoring modules into 16 independent,hardware-level relay contacts—ideal for driving emergency shutdown valves,turbine trip solenoids,DCS digital inputs,or local annunciation panels.With its quad-slot footprint and robust SPDT relays,the 135473-01 delivers unmatched output capacity for complex protection schemes in power,oil&gas,and heavy industry.

Application Scenarios

At a major LNG export terminal in Australia,a single compressor train required 14 distinct trip actions—from vent valve actuation to lube oil pump interlocks—triggered by vibration,speed,and temperature faults.Space constraints in the existing 3500 rack ruled out using multiple smaller relay cards.The engineering team deployed one BENTLY 135473-01,consolidating all 14 outputs plus two spares into a single module.During a subsequent high-vibration event,the 135473-01 executed all trip commands simultaneously within 8 ms,safely isolating the compressor without cascading failures.This real-world deployment demonstrated how the 135473-01 turns architectural complexity into operational simplicity.

Parameter

Main Parameters Value/Description

Product Model 135473-01

Manufacturer BENTLY NEVADA(a Baker Hughes company)

Product Category 16-Channel Relay Output Module(3500/33 Series)

Number of Channels 16 independent SPDT(Single-Pole Double-Throw)relays

Contact Rating 3 A 30 VDC;2 A 120 VAC(resistive load)

Electrical Isolation Channel-to-channel and channel-to-ground isolation per IEC 61010-1

Mounting Type Occupies 4 adjacent I/O slots in 3500 rack

Front Panel Indicators 16 green LEDs(one per channel)indicating relay coil energization status

Communication Interface Receives command signals via 3500 backplane from monitoring modules

Configuration Method Via System 1 Rack Configuration Software(RCS)

Operating Temperature 0°C to+65°C

Certifications API 670,CE,UL,CSA

Technical Principles and Innovative Values

Innovation Point 1:Unmatched density—16 fully isolated relay channels in just 4 rack slots(≈120 mm width),reducing space requirements by up to 60%compared to using four 3500/92(4-channel)cards.

Innovation Point 2:True hardware independence—each relay operates on a dedicated driver circuit,ensuring failure in one channel does not affect others—a critical requirement for SIL 2 and API 670 compliance.

Innovation Point 3:Direct drive capability—3A contact rating allows connection to small solenoids,pilot relays,or PLC inputs without intermediate interface panels,simplifying wiring and lowering lifecycle costs.

Innovation Point 4:Real-time visual diagnostics—front-panel LEDs provide immediate field confirmation of relay state during testing or fault investigation,accelerating troubleshooting during critical outages.

Application Cases and Industry Value

In a nuclear power plant’s main feedwater pump system in South Korea,redundancy and reliability were non-negotiable.Two BENTLY 135473-01 modules were installed in dual-redundant 3500 racks,each driving identical sets of trip solenoids for dual-trip-path architecture.During a seismic qualification test,both modules responded identically to simulated bearing faults,validating the design’s fault tolerance.Plant engineers noted a 40%reduction in marshalling panel complexity compared to legacy solutions—translating to faster commissioning and fewer potential failure points.

Similarly,a petrochemical refinery in Saudi Arabia replaced aging relay panels with 135473-01 modules across eight critical compressors.The consolidation eliminated over 200 external relays,reducing annual maintenance labor by 300 hours and cutting spare parts inventory costs by$120,000/year—all while improving system response time and diagnostic visibility.

Related Product Combination Solutions

BENTLY 3500/42 140471-01:Dual-channel vibration monitor—triggers relays on the 135473-01 based on Alert/Danger conditions.

BENTLY 3500/25 149369-01:Keyphasor module—provides speed reference for overspeed-based relay activation via 135473-01.

BENTLY 3500/53 133388-01:Speed monitoring card—sends trip commands to 135473-01 during overspeed events.

BENTLY 3500/20 125744-01:Rack interface module—enables full configuration and health monitoring of the 135473-01 through System 1.

Baker Hughes System 1:Centralized asset performance platform that logs 135473-01 relay events for root-cause analysis and compliance reporting.

BENTLY 3500/15 125840-01:Power supply—supports compact racks where the 135473-01 is the primary output device.

BENTLY 3500/94 145988-01:6-channel relay card—used alongside 135473-01 when mixed high/low-density output needs exist.

Installation,Maintenance,and Full-Cycle Support

Installing the BENTLY 135473-01 requires securing it in four consecutive I/O slots and connecting field wiring to its front-terminal block(screw-type,22–12 AWG).Each relay contact is clearly labeled(NO/NC/COM),and polarity-insensitive DC loads simplify termination.Configuration is performed entirely in System 1 RCS,where users assign each relay to specific alarm sources(e.g.,“Channel 3 Danger”or“System OK”)and define logic behavior.

Routine maintenance involves visual inspection of LED status and periodic functional testing using the 3500 system’s built-in relay test feature—no external tools needed.The module’s solid-state coil drivers and sealed relays ensure long service life even under frequent cycling.In case of replacement,the 135473-01 is plug-and-play;all logic resides in the rack controller,eliminating reconfiguration delays.

Every unit undergoes rigorous validation:contact resistance measurement,insulation testing,thermal cycling,and full-load relay endurance checks.We back the BENTLY 135473-01 with a 12-month warranty and expert technical support—ensuring your protection system executes flawlessly when seconds count.

Contact us for a customized solution to maximize output density,enhance safety integrity,and simplify your machinery protection architecture with the industry’s most capable relay interface.

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