3500 system overview

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Specifications and Ordering InformationPart Number 162096-01

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3500 System Overview

Description

The 3500 System provides continuous, online monitoring suitable for machineryprotection applications, and is designed to fully meet the requirements of theAmerican Petroleum Institutes API 670 standard for such systems. It representsour most capable and flexible system in a traditional rack-based design, andrepresents numerous features and advantages not provided in other systems.The systems highly modular design consists of:

3500/05 Instrument Rack (required)

One or two 3500/15 Power Supplies (required)

3500/22M Transient Data Interface or 3500/20 Rack Interface Module(required)

One or two 3500/25 Keyphasor Modules (optional)

3500 Rack Configuration Software (required)

One or more 3500/XX Monitor Modules (required)

One or more 3500/32 Relay Modules or 3500/34 TMR Relay Modules(optional)

One or more 3500/92 Communication Gateway Modules (optional)

3500/93, 3500/94, or 3500/95 display OR 3500 Operator DisplaySoftware running on a compatible PC (optional)

Internal or external intrinsic safety barriers, or galvanic isolators forhazardous area installations (optional)

These are described in more detail in the following section and in the individualdatasheets for each system component.


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System Components

Rack

The full-size 3500 Rack isavailable in 19 EIA rail-mount, panel-cutout-mount,

and bulkhead-mountversions. The rack providesslots for two Power Suppliesand a Rack Interface Modulein the left-most rack positions that are reservedexclusively for these modules. The remaining 14slots in the rack can accommodate anycombination of monitor, display, relay, Keyphasormodule, and communications gateway modules.All modules plug into the racks backplane andconsist of a main module and an associated I/Omodule. The I/O module installs at the rear of therack for panel-mount systems, and above the main

module for bulkhead-mount systems.The rack depth is 349 mm(13.75 inches) and NEMA 4and 4X weatherproofhousings are available whenrequired for environmentalprotection or when purge airis used.

A mini-rack (12 wide insteadof 19) is also available andfeatures 7 available monitor

slots instead of 14. Like its larger counterpart, the

left-most slots are reserved for the Power Supply orSupplies and Rack Interface Module. The mini-rackmay be mounted in a panel cutout or, using anoptional adapter plate, on 19 EIA mounting rails.Bulkhead mounting is not available.

Note: The use of internal barriers adds 74 mm (3 inches) to therack depth. The bulkhead-mount version of the rack is 267 mm

(10.5 inches) deep. Actual dimensions of all rack types can befound in our document number 129766.

Power Supply

The 3500/15 Power Supply can be ordered for ac ordc input power, providing compatibility with voltagesources worldwide. Line noise filters are standard.The 3500 Rack can operate from a single

supply, or dual Power Supplies can provideredundancy for situations which cannottolerate power interruption. Dual suppliesreside in the upper and lower positions ofthe left-most rack slot. Redundant PowerSupplies can use with separate voltagesources. For example, the primary(bottom) supply can be operate with 120 Vac powerwhile the backup (upper) supply can be poweredfrom an uninterruptible 24 Vdc source.

Each Power Supply can individually provide power tothe entire rack and its modules. When redundantsupplies are used, one supply acts as primary power

for the rack while the other acts as a backup, readyto instantly and automatically operate as theprimary rack supply without interrupting rackfunctions., should the primary supply fail.

The 3500/15 Power Supply module has self-monitoring functions that allow it to determine if allits output voltages are within specifications. Themodule annunciates this via a green Supply OK LEDon the Power Supplys front panel.

Rack Interface Module/Transient DataInterface

The Transient Data Interface (TDI) or the RackInterface Module (RIM) are the 3500 Racks primaryinterfaces to the configuration, display, andcondition monitoring software. Each rack requireasone TDI or RIM, which resides in the rack slotimmediately adjacent to the Power Supply slot. TheTDI and RIM support a proprietary protocol used byboth the 3500 Configuration Software to configurethe rack and the 3500 Operator Display Software toretrieve rack data and statuses. TDI provides a directinterface with GEs Bently Nevada System 1machinery management software without the needfor an external communications processor. The RIMrequires an external communications processor,such as TDXnet, TDIX, or DDIX to interface to DataManager condition monitoring software.

The System OK relay1 is located within the TDI/RIMsI/O module. It is driven by NOT OK conditions withinthe TDI/RIM itself and within other modules in therack.


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The TDI and RIM supply self monitoring functionsboth for themselves and for the rack, in addition tothose provided by the individual monitor, relay,communications, and other modules. While theTDI and RIM provide certain functions common tothe entire rack, neither is part of the criticalmonitoring path and has no effect on the proper,normal operation of the overall 3500 System or itsmachinery protection functions.

The TDI and RIM provide 4 front-panel LEDs asfollows:

OK Indicates that the Rack Interface Module and its I/Omodules are operating correctly.

TX/RX Flashes at the rate that communications betweenthe RIM and other rack modules are occurring.

TM Indicates when the rack is in the Trip Multiply mode.

CONFIGOK

Indicates that any module in the rack is notconfigured or has a configuration error; that the

stored configuration of the Rack Interface Moduledoes not match the physical configuration of therack; or that a security option condition was notmet.

System configuration is secured by means of akeylock switch on the front of the TDI/RIMand two levels of software passwordprotection, preventing unauthorizedchanges to or tampering with theconfiguration. Both the TDI and the RIMcan be connected to a portablecomputer via a front-panel serial

communications port for local changesto configuration. The RIM can also bepermanently connected to aconfiguration workstation via a rearpanel serial communications port, or to aremote computer via an optional modemI/O module. The TDI provides permanentsystem connectivity via Ethernet ports.The TDI/RIM provides a front-panel DIPswitch that permits the user to assign aunique rack address when multiple 3500racks are networked with one another.

The TDI/RIM provides a system reset switch on thefront panel, allowing the user to clear any latchedalarms in the system as well as latched NOT OKconditions. An I/O module provides a set of rear-panel connections as well, allowing users toremotely activate this switch.

For Triple Modular Redundant (TMR) applications,the 3500 System requires a TMR version of the

TDI/RIM (refer to the TMR section of this datasheetfor additional information).

Notes:1. Dozens of possible event conditions within the rack can drivethe NOT OK relay. For this reason, it is not intended for use as partof a machinery auto-shutdown circuit and should be used forgeneral annunciation purposes only.

Monitors

Table 1 summarizes available monitor types in the3500 System. Each monitor occupies a single slot inthe rack. All monitors are microprocessor-based andoffer digitally adjustable Alert and Danger setpointsfor each channel1. Users can configure alarms forlatching or non-latching operation. Statusindications for each monitor and channel areprovided with bright, front-panel LEDs, allowingobservation without operator interaction for easyand convenient operation. Most monitors provideindependent 4 to 20 mA proportional outputs for

each channel of the I/O module for connection tostrip chart recorders or for older process controlsystems that do not support a digital interface.Where applicable, the monitors I/O modules providetransducers with appropriate power via short-circuit-protected terminals. OK detection routineswithin each monitor continuously check the integrityof each transducer and the associated field wiring.

Transducer input signals are buffered and sent tofront-panel coaxial connectors2. Buffered outputterminals are also available upon request on the rearof the TDI/RIMs I/O module.


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Available 3500 Series MonitorModules

MonitorType

Channels Types Number ofChannels

3500/40M

Radial Vibration Axial (Thrust) Position

Eccentricity

Differential Expansion3

Four4,5

3500/42M Same as 3500/40M, with thefollowing additional channeltypes:

Acceleration6

Velocity6

Enhanced Acceleration6 Enhanced Velocity6 Circular

AcceptanceRegion7

Shaft Absolute

Four4,5

3500/44M Special Aeroderivative Gas

Turbine MonitoringFunctions8

Four

3500/45 Axial (Thrust) Position

Differential Expansion

Standard Single RampDifferential Expansion

Non-Standard Single RampDifferential Expansion

Dual Ramp DifferentialExpansion

Complementary DifferentialExpansion

Case Expansion9

Valve Position

Four5

3500/46M Hydro Radial Vibration10

Hydro Stator-Mounted AirGap

Four5

3500/50 Standard Tachometer

Rotor AccelerationTachometer

Zero-Speed Tachometer

Two11,12

3500/53 Overspeed Tachometer One

13

3500/602,14and3500/612,14

Temperature

Differential Temperature

Six

MonitorType

Channels Types Number ofChannels

3500/622,14 Process Variables15 Six

3500/632 Hazardous Gas Detection Six

3500/64 Dynamic Pressure16 Four

3500/70M Recip Impulse / Velocity Four

3500/72M Reciprocating Compressor

Rod Drop / Rod Position /Hyper compressor

Four5

3500/77M Reciprocating Compressor

Cylinder Pressure,including:

- Suction Pressure- Maximum Pressure- Minimum Pressure- Compression Ratio- Peak Rod Compression- Peak Rod Tension- Degree of Rod Reversal

Four

Table 1


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Notes:1. In addition to the direct measurement made by the monitor,many channel types provide an enhanced data set consisting of avariety of proportional values that will depend on the monitor typeand its configuration. For example, for a radial vibration channelthis includes the basic overall (direct) vibration amplitude as well asgap voltage, 1X filtered amplitude, 1X filtered phase, 2X filtered

amplitude, 2X filtered phase, NOT 1X amplitude, and Smax. Theseadditional proportional values are provided for each channel, andALERT alarm setpoints can be established on each proportionalvalue, as desired. DANGER alarm setpoints can be established onany two proportional values returned from each channel.

2. 3500/60, /62, and /63 monitor types do not provide front-panelbuffered output connectors.

3. Only standard differential expansion capabilities provided. Forramp differential expansion and complementary input differentialexpansion, use the 3500/45 Position Monitor instead.

4. The 3500/42M provides individual 4 to 20 mA proportionaloutputs for each channel. The 3500/40M does not provide 4 to 20mA outputs.

5. The monitor channels are programmed in pairs and can perform

up to two of these functions at a time. Channels 1 and 2 canperform one function, while channels 3 and 4 perform another (orthe same) function.

6. Channels configured for velocity or acceleration provide onlydirect amplitude. Channels configured for Velocity II or AccelerationII provide 1X amplitude/phase and 2X amplitude/phase in additionto direct amplitude.

7. Any vibration channel can be configured for conventional pie-shaped acceptance region alarms. When configured for circularacceptance regions, circular, rather than pie-shaped, acceptanceregion alarms can be enabled. Refer to the 3500/42MOperations/Maintenance Manual for additional information, orcontact your nearest sales professional.

8. Contact the factory or your local sales professional for details.

9. Only channels 3 and 4 can be used for Case Expansionmeasurements.

10. The 3500/46M provides frequency response characteristicssuitable for use on machines with very slow rotational speeds, suchas hydraulic turbine/generator sets, which often operate at speedsof 100 RPM or lower. Also, special signal conditioning and trackingfiltering is provided, allowing detection of rough load zoneoperation, shear pin failure, and other hydro-specific conditions.

11. The 3500/50 is not intended for use in overspeed protectionapplications. Use the 3500/53 instead.

12. Zero speed functionality requires both channels of the 3500/50module, making it a single-channel monitor.

13. The 3500/53 is a single channel module, intended for use as

part of a 1-out-of-2 or 2-out-of-3 (recommended) overspeeddetection system.

14. The 3500/60 and 3500/61 provide identical functions except the3500/60 does not provide 4 to 20 mA proportional outputs. Whenthese outputs are required, use the 3500/61.

15. The 3500/62 is designed to accept static proportional signalssuch as 4 to 20 mA, 1 to 5 Vdc, or any static proportional signalbetween 10 and +10 Vdc. When dynamic signals (i.e., those wherewaveform information is required) are used, a 3500/40M or

3500/42M can often be programmed as a custom channel type tosuch signals, making the 3500 system compatible with virtually anystatic or dynamic signal from pressure, level, temperature, vibration,flow, position, speed, or other transducers. Consult the factory oryour local Bently Nevada sales professional for more information.

16. The 3500/64M is primarily intended for monitoring combustorpressure pulsation instabilities (humming) in gas turbines.

Relays1

The 3500/32 Relay Module provides fourdouble-pole, double throw (DPDT) relays thatcan actuate based on alarm conditions within3500 monitor modules. The configurationsoftware allows the user to program variouscombinations of alarms, ranging from anindividual channels ALERT or DANGER status,to highly complex Boolean expressions thatcombine two or more channel statuses toprovide special AND or OR voting. By addingthe desired number of relay modules, the user

can provide individual contacts for eachchannel, alarm type, and group of channelsfor global alarm annunciation.

The 3500/34 TMR Relay Module works inconjunction with a special TMR Rack InterfaceModule and three monitor modules to provide2-out-of-3 voting for inputs.

Relays are epoxy-sealed and installed arcsuppressors are standard. Users can program

relays for either normally energized ornormally de-energized operation.

The 3500 Rack also supplies a commonsystem OK relay2 in addition to any alarm relays in therack. This relay is located in the TDI/RIMs I/O moduleand is connected to the OK circuits of all modules inthe rack. These circuits monitor the operatingcondition of each module. Any fault in the module, itstransducers, or associated transducer field wiring willbe annunciated by the OK relay. This relay is a single-pole, double-throw (SPDT) type and is normallyenergized, providing added capability of annunciationin the event of primary power loss.

Notes:1. Although not a required component of the 3500 System, westrongly recommend relays as the appropriate way to interconnectthe 3500 System in auto-shutdown applications. Analog (e.g. 4 to 20mA) and digital (e.g. Modbus*) connections are intended for operatorannunciation and trending purposes and do not provide the faulttolerance or integrity necessary for highly reliable machineryshutdown purposes.2. Dozens of possible event conditions within the rack can drive theNOT OK relay. For this reason, it is not intended for use as part of a


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machinery auto-shutdown circuit and should be used for generalannunciation purposes only.

Keyphasor Inputs

The 3500 System can accommodate up to four1

Keyphasor transducers per rack by installing two3500/25 Keyphasor modules in a rack2. Each 3500/25is a half-height module that provides power andtermination for up to two Keyphasor transducerseach. When applications require Keyphasortransducers, simply install a single 3500/25 module.Keyphasor signals from the 3500/25 module(s) can berouted to appropriate monitor modules via the 3500srack backplane for use in speed, phase, tracking filter,and other measurements.

Notes:1. When more than four Keyphasor transducers must be used in a single rack,contact the factory for details regarding special modifications available.2. When two 3500/25 modules are used, they must be installed in the same

rack slot, one above the other.

Communications Gateway

With an appropriate CommunicationsGateway module in the rack, installationscan digitally transfer selected status andcurrent value data to process controlsystems, historians, plant computers, andother relevant systems. TheCommunication Gateway modulessupport a variety of industry-standardprotocols and users can install multiple

Communications Gateway modules in arack when the system requires redundantcommunications or must support multiplecommunication protocols simultaneously.The modules do not interfere with the3500 Systems normal operations ormachinery protection functions, ensuringthat the monitoring system integrity is alwaysmaintained, even in the unlikely event of aCommunications Gateway module failure.

The Communications Gateway supports both Ethernetand serial communications media, allowing a varietyof wired and wireless topologies. Communications arebi-directional, allowing selected data to be sent to andretrieved from the 3500 System. In addition, wheninstallations use Ethernet to connect theCommunications Gateway to process control or othersystems, multiple computers running 3500Configuration Software and/or 3500 Operator DisplaySoftware can reside on the same network. This

eliminates the need for separate connections betweenthe software and the RIM.

Displays

The 3500 System provides the most flexible displayoptions ever offered by the Bently Nevada product line

as summarized in Table 2. Multiple displays can becombined as needed to meet specific requirements forlocal and remote indication of rack statuses,measurements, and alarms.


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3500 Display Options

Display Type Mounting Options Capabilities Meets API670

Face Mounting1 The display installsdirectly over the front panel of any 3500rack using a special hinged support. Thispermits access to the racks buffered outputconnectors and user-interface buttons andswitches without disconnecting or disablingthe display.19-inch EIA Rack Mounting The display ismounted on 19-inch EIA rails and located upto 100 feet away from the 3500 System2.

Panel Mounting The display is mounted ina panel cutout located in the same cabinetor up to 100 feet away from the 3500

System2

.

3500/93 LCDDisplay

Independent Mounting The display ismounted in a NEMA 4X enclosure flushagainst a wall or panel, and located up to100 feet away from the 3500 System2.

Provides status and indication of all monitored parameterswithin the 3500 rack via dedicated LEDs and VGA (640 x200) monochrome display. Bargraph, text, and other displaysare available, based on configuration.

CSA approved for use in Class I Div 2 hazardous areas.

Yes, whenproperlyconfigured

Panel Mounting The display is mounted ina panel cutout located in the same cabinetor up to 25 feet away from the 3500System3.

19-inch EIA Rack Mounting The display ismounted on 19-inch EIA rails and located upto 25 feet away from the 3500 System3.

3500/94 VGADisplay

Shelf Mounting The display is mounted ona shelf or tabletop and located up to 25 feetaway from the 3500 System3.

VGA module occupies one rack slot and can drive anycompatible touchscreen VGA (640 x 480 color) display,without the need for special configuration (uses configurationwithin 3500 rack to create pre-formatted screensautomatically). Provides bargraph, text, and other displaytypes. This display option is recommended for mostapplications.

When used with an optional display router, up to four 3500

racks can share a single display; however, this option doesnot meet API 670 requirements of a dedicated display foreach rack.

CSA approved for use in Class I Div. 2 hazardous areas whenordered with the R. S. Power Station option.

Yes

3500/95 UserInterfaceWorkstation

Panel Mounting The display is mounted ina panel cutout located in the same cabinetor up to 4000 feet away from the 3500System4.

This display option is an industrial panel-mounted computerrunning 3500 Operator Display Software. A single 3500/95can display information from multiple 3500 racks. Software,such as 3500 Configuration or other Bently Nevada conditionmonitoring software, can also reside on this computer.

The computer is CSA approved for use in Class I Div 2

hazardous areas.

No

Desktop orLaptopComputer

This display option is a compatible desktop or laptopcomputer running 3500 Operator Display Software, that ispermanently connected to the rack via the RIM using serialcommunications or via a Communications Gateway moduleusing Ethernet.

Where a permanent display is not required, connection can

No


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Display Type Mounting Options Capabilities Meets API670

be made to the RIM using a laptop and serial cable, or viaoptional phone modem.

Process ControlSystem

In this display option, a Communications Gateway module inthe rack provides status and current value information to aprocess control system, plant computer, or other human

machine interface using one of the 3500 Systems supportedprotocols. Alternatively, hardwired 4 to 20 mA proportionaloutputs and relay contacts can be used in lieu of a digitalinterface to older control or automation systems.

No

None The 3500 can operate as a blind system with only local LEDstatus annunciation as provided on the rack. Temporarydisplay capabilities can be obtained by connecting a laptopcomputer to the rack using the RIMs serial port or modem.3500 Configuration and/or 3500 Operator Display Softwaremust be loaded on the computer.

No

Table 2


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Notes:1. For this mounting option only, the Display Interface

Module (DIM) must occupy slot 15 (right-most slot) ofthe rack.

2. With the use of a special external power supply, thedisplay can be located up to 1219 metres (4000 feet)from the 3500 System.

3. It is recommended that the display be located within7.6 metres (25 feet) of the 3500 rack., as the v ideodriver circuit is optimized for this range. Lengths above

25 feet will degrade the picture quality. When anextension is necessary, a special KVM Extender isavailable. However, even with the KVM Extender, therewill be some reduction in picture quali ty. Typically, thepicture image will still be acceptable. The KVM Extendermust be used indoors, and it is not rated for use inhazardous areas.

4. Distances greater than 4000 feet are supported whenEthernet, rather than serial communications, is usedbetween the rack and the 3500/95 display. WirelessEthernet can also be used.

Intrinsic Safety Barriers or Galvanic Isolators

For applications where the transducers are locatedin a hazardous area, the 3500 System can be usedwith internal or external intrinsic safety barriers.However, the 3500 option for internal safety barriersis generally preferable to external barriers becausethis option saves cost, requires no extra cabinetspace, and needs no additional wiring. Internalbarriers improve safety because the connections arepre-wired, reducing the possibility for errorsintroduced by wiring additional external connectionsbetween monitors and barriers. Internal barriersalso improve quality because, unlike externalbarriers, they require no special monitor scale factorcalibration to compensate for voltage drop acrossthe barrier. For additional information on 3500internal barriers, refer to datasheet 141495-01.

For those that prefer the use of galvanic isolators toaddress intrinsic safety requirements, pre-engineered external galvanic isolators and anappropriate housing are available. For additionalinformation on 3500 galvanic isolators, refer todatasheet 141714-01.

Applications

The 3500 System is intended for continuous,permanent monitoring of rotating and reciprocatingmachinery in a variety of industries. It is specificallydesigned for use in auto-shutdown machineryprotection applications that require extremely highreliability and availability. Machine types addressedby the 3500 System include but are not limited to:

Industrial gas and steam turbines in powergeneration and mechanical drive service

Aeroderivative gas turbines in power generationand mechanical drive service

Hydraulic (Hydro) turbines in power generationservice

Compressors (air/process gas, radial/axial,centrifugal/positive displacement)

Turbo Expanders

Electric motors and generators

Exciters

Gear boxes

Pumps (centrifugal and positive displacement)

Fans

Blowers

Reciprocating compressors

Extruders and pelletizers

In addition, GEs Bently Nevada Custom Productsengineering, can often address special requirementsfor custom configuration of an existing monitor typeor modifications to a standard monitor type. Contactyour local sales professional for further information.

Features

Digital and Analog CommunicationsThe 3500 System features separate, concurrentdigital communication capabilities for connection to:

System 1 machinery management software usingBently Nevada proprietary protocols via Ethernetconnections

Process control and other plant automation

systems using industry-standard protocols viathe 3500s Communications Gateway module

Bently Nevada condition monitoring systems viapre-engineered Data Manager ports whichinterface to an appropriate externalcommunications processor such as TDXnet,TDIX, or DDIX

3500 Configuration and Display software

In addition, analog (4 to 20 mA and relay) outputs areavailable for connection to older plant controls thatcannot support digital interfaces.

Note: Although not a required component of the 3500 System,relays are strongly recommended as the appropriate way to

interconnect the 3500 System in auto-shutdown applications.Analog (e.g. 4 to 20 mA) and digital (e.g. Modbus) connections areintended for operator annunciation and trending purposes and donot provide the fault tolerance or integrity necessary for highlyreliable machinery shutdown purposes.

Highly Flexible Display Options

Displays can range from local units mounted directlyon the racks front panel, to remote displays using


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wireless communications, to completely blindmonitoring systems with an as-needed HMI (HumanMachine Interface) connection for configuration andinformation. Multiple displays can be connectedconcurrently without degrading system performanceor interrupting basic machinery protection functions.

Software Configurable

Virtually every aspect of the 3500s operation issoftware configurable, resulting in the most flexibleBently Nevada monitoring system ever offered andin easier spare parts management. Unlike previoussystems, a single 3500 module type can beconfigured for a variety of functions rather than forjust a single function. The following list representsjust part of the 3500s numerous configurableoptions.

Transducer type andscale factor

Normal thrustdirection toward oraway from probe

Alarm delays Trip Multiply factorTransducer OK limits Filter cornersFull scale value Integration (velocity to

displacement,acceleration tovelocity)

Engineering Units Recorder outputclamping value

Alarm Setpoints Timed OK / ChannelDefeatenabled/disabled

Latching/non-latchingalarms Proportional valueassigned to recorderoutput

Normally energized orde-energized relays

Relay voting logic

DensityThe 3500 System can easily fit twice as manychannels into the same rack space as previousmonitoring systems. This results in lower installationcosts by saving valuable cabinet space andspreading common components, such as displays,communications gateways, and power supplies,

across more channels for lower per-channel costs.

Internal and External Terminations

Previous monitoring systems have alwaysincorporated field wiring connections on the back ofthe rack. The 3500 System offers this conventionalapproach with our internal termination option.However, the 3500 system now offers an innovative

external termination option that allows field wiring togo to external terminal blocks. These blocks can bemounted where access is more convenient, such ason a cabinet wall, and less congested than on theback of each monitor module. The external terminalblock then connects to the monitors I/O moduleusing a single pre-engineered cable, resulting inneater, more easily serviceable installations.

Conventional internal terminations is shown above,where field wiring terminates directly to connectionson 3500 I/O modules.

(?)

Higher Integrity / Fault ToleranceThe 3500 System is the first system offered in theBently Nevada product line that the user canconfigure with varying levels of redundancy. Thisranges from simplex modules to dual power suppliesto a full TMR (Triple Modular Redundant)configuration in which monitor channels (andoptionally, transducers) can be triplicated participatein a 2-out-of-3 voting scheme using special relays.This allows the 3500 to be used in safetyinstrumented applications that cannot tolerate falseand missed trips under any circumstances, whetherfrom a power supply, a monitor channel, or atransducer or the result of electronic failure orhuman error.

Even without redundancy, the 3500 systemrepresents the most reliable monitoring system wehave ever offered. It incorporates numerous self-monitoring functions that can identify faults in the

monitor modules and their connected transducers,annunciate and identify problems via appropriateerror codes, and suppress channel operationautomatically when a failure could compromisecorrect operation of the system.

The 3500 System stores configuration in twoseparate locations in each modules non-volatilememory. This redundancy allows the module to


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ensure that memory has not been corrupted bycomparing configuration information for agreementand flagging any anomalies. The use of redundant,non-volatile memory also allows the user to programthe module ahead of time for spare parts, andensures that, in the event a redundant power supplyis not used, monitor configuration is not lost whenpower is interrupted and monitoring functions canresume immediately upon reapplication of rackpower.

Skid Mounting

In many cases, the 3500 rack can be mounted on ornear the machine skid or local control panel, keepingcable runs between the 3500 rack and the machineshorter and less costly. Wired and wirelesscommunications and display options permit theinstallation to make a single Ethernet connectionbetween the control room and 3500 rack. This alsopermits installations to distribute display and otherinformation needed, whether to a process control

system or to an engineers desktop computer. Theresult is a machinery protection system withsignificantly lower installation costs than those thatmust be mounted in only control roomenvironments. Optional NEMA 4 and NEMA 4X

weatherproof housings are available wheninstallations require field mounting of the 3500System.

Remote AccessibilityModem, WAN, or LAN connections allow the user toremotely configure a 3500 system and even assessthe system when an instrument problem arises.Users can implement simple changes, such as to an

alarm setpoint or a filter corner, without traveling tosite. This is ideal for such installations as offshoreplatforms, compressor or pump stations, emergencygenerators, and other locations where on-siteaccess to the instrumentation is inconvenient orimpractical.

Tamper-resistant Design

The 3500 Systems two levels of password protectioncombined with a keylock for configuration changesensures the system cant be adjusted, changed, orconfigured except by those authorized to do so.Users can document and control management ofchange much more easily, and the 3500 rack

records any configuration changes in the systemsevent list.

Alarm/Event Lists

The 3500 System goes well beyond the capabilitiesof previous systems to simply identify the first alarmto occur in the rack via a First Out feature.Extensive alarm and event lists retain the 1000 mostrecent alarm and 400 most recent system events(configuration changes, errors, etc.). The systemsTDI/RIM retains the lists, which provide a descriptionof each alarm or event and a corresponding

date/time stamp. These lists are available to 3500displays, 3500 Operator Display Software, and theCommunications Gateway module for export toprocess control, historian, or other plant systems.

Time Synchronization

The systems real-time clock can be synchronizedwith external clocks, via the CommunicationsGateway or via connected Bently Nevada software.The 3500s alarm and event lists then providetime/date stamps that are synchronized with alarmsand events in other process and automationequipment. This reduces or eliminates the need forelaborate, hardwired Sequence of Event recorders.

API 670 Compliance

When configured properly, supplied with the correctnumber of relay modules, and provided with anappropriate optional display, the 3500 System fullycomplies with the latest edition of the AmericanPetroleum Institute (API) Standard 670 for MachineryProtection Systems, covering shaft-relative vibration,axial position, temperature, reciprocatingcompressor rod drop, tachometer, overspeeddetection, and casing vibration.

Hot Insertion

All modules and Power Supplies (when redundantsupplies are used) can be removed or inserted whenthe rack is under power. This facilitates easiermaintenance and system expansion withoutinterruption of machinery protection functions orsystem operation.Note: Before removing an I/O module, the front-panel portion ofthe module must first be removed. This removes power from the


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slot so that the I/O module can then be safely removed withoutpowering down the rack.

More Flexible Mounting Options

In addition to conventional 19-inch rail and panel-cutout mounting options, the 3500 Systemintroduces a new bulkhead mounting option,allowing the rack to be mounted on a wall or other

location where rear access to the rack is notavailable.

Enhanced Data

Even without condition monitoring software, the3500 System is able to provide more measurementsfrom each transducer channel. For example, inaddition to direct (unfiltered) vibration amplitude fora radial proximity probe channel, the 3500 monitorcan return gap voltage, 1X amplitude and phase, 2Xamplitude and phase, NOT 1X amplitude, and Smaxamplitude (when XY transducers are present). Thus,

a single radial vibration channel can actually return8 conditioned parameters (termed proportional

values) for a total of 32 in a single 4-channel monitormodule. This is particularly valuable whenmachinery protection strategies require alarms onthese proportional values. Activation or use of theseproportional values has no impact on rack density,and does not consume additional channels in themonitor.

Note: ALERT alarm setpoints can be established on eachproportional value, as desired. DANGER alarm setpoints can beestablished on any two proportional values returned from eachchannel.

SpecificationsConsult individual datasheets for each module type.

Ordering InformationConsult individual datasheets for each module type.

Copyright 2002. Bently Nevada, LLC.1631 Bently Parkway South, Minden, Nevada USA 89423

Phone: 775.782.3611 Fax: 775.215.2873www.ge-energy.com/bently

All rights reserved.

Bently Nevada , System 1, Data Manager, and Keyphasor are trademarks of the General Electric Company.

Modbus is a trademark of Modbus-ADI.

3500 system overview

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