centinel manual (ver1v4)

8/10/2019 Centinel Manual (VER1v4)

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Baker Hughes - CentriliftCopyright 2006

Manual P/N 902272Version 1.4

November 2006

The features and functions illustrated in this manual require that theCentinel system contains the listed versions of firmware.

Please contact Centrilift for a system firmware update if necessary.

System Firmware Revisions required:

Graphic Display Unit: 6.00 or higher

Centinel Interface Module: 2.20 or higherGCS System Control Software (For integrated configuration): 8.04 or higher

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Table of Contents

SAFETY RECOMMENDATION ..............................................1

SAFETY DURING INSTALLATION.................................1

INTRODUCTION.....................................................................2GENERAL DESCRIPTION......................................................2

ARCHITECTURE .............................................................2

FEATURES ......................................................................3

OPTIONS .........................................................................3

INSTALLATION.......................................................................4

INITIAL CHECKS .............................................................4

POWER WIRING .............................................................4CUSTOMER INTERFACE WIRING................................. 5ONBOARD DIGITAL OUTPUTS...................................... 5

ONBOARD ANALOG OUTPUTS (To Sensor).................5

GCS EXPANSION I/O MODULE (Optional) .................... 5BASIC OPERATION ........................................................ 7

COMMISSIONING............................................................8SURFACE INDUCTOR INSTALLATION ................................9

SENSOR INSTALLATION.....................................................10

Y-CONNECTION/I-WIRE...............................................10

INSTALLING ON MOTOR .............................................13

MENU SCREEN.................................................................... 14

MENU SCREEN.................................................................... 15GCS MODULES.................................................................... 15

ONBOARD I/O................................................................15

INT ANALOG OUT 1......................................................16

INT DIGITAL OUTPT .....................................................16EXPANSION I/O MODULE 1 (OPTIONAL).................... 16EXP I/O 1 AI1 and EXP I/O 1 AI2 ..................................16

EXP I/O 1 A01 and EXP I/O 1 A02 ................................17

EXP I/O 2 A01................................................................17

GCS MODULES STATUS ..............................................17

MODULE STATUS.........................................................17

CENTINEL GCS SETUP ................................................ 18

GAUGE DETECTION METHOD....................................18GAUGE TYPE................................................................18CENTINEL SECURITY LEVEL.......................................18

CENTINEL UNITS..........................................................19CENTINEL COM FAIL ALARM......................................19CENTINEL COM STATS ............................................... 19MANUAL GAUGE RESET .............................................19

CENTINEL STATUS.......................................................19

DATA LOGGING (OPTIONAL) ....................................... 21

PC CARD DATA LOGGING...........................................21

SCADA INTERFACE (OPTIONAL) ................................23

PICK-UP PROCEDURE........................................................24

RUN-IN-HOLE PROCEDURE............................................... 24MAINTENANCE .................................................................... 25

CHECKING PULLED UNIT............................................25

TROUBLESHOOTING .......................................................... 26ERROR RECOVERY .....................................................27SELF DIAGNOSTICS ....................................................27

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APPENDIX A: CENTINEL SPECIFICATIONS AND RATING............................................................................................... 28

APPENDIX B: BLOCK CONTROL SCHEMATIC.................. 29

APPENDIX C: PHYSICAL DIMENSIONS............................. 30

APPENDIX D: MODBUS ADDRESS MAP FOR CENTINELDATA POINTS.......................................................................31

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SAFETY RECOMMENDATION

Centinel equipment should be installed, adjusted andserviced by qualified electrical maintenance personnel.

Improper installation or operation of the equipment maycause injury to personnel or equipment. This equipmentmust be installed and grounded in accordance with localand national electrical codes. Potentially lethal vo ltagesexist within the cabinet enclosures. Extreme care must betaken to insure all power sources are disconnectedbefore beginning installation, maintenance and repair

jobs.

Standard safety gear should be worn at all timesinclud ing, but not l imited to: safety glasses, gloves, andsteel toe boots.

SAFETY DURING INSTALLATION

The Centinel surface equipment outputs 60 to 90 VDC topower the downhole unit. Confirm that power is disconnectedto the panel before working on equipment.

Disconnect the Surface Inductor Panel from the ESP systemwhen insulation tests/HV tests are performed.The connectionbetween the Surface Inductor Panel and the Centinel PowerSupply (in the Surface Electronic Panel) may be live evenwhen the Surface Electronic Panel is powered down due tovoltages on the ESP system. Isolate the ESP before working

on the Centinel system by disconnecting the Surface InductorPanel from the system.

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INTRODUCTIONThis manual contains general information for the Centinelsystem, specific installation information, as well as setup andoperating instructions for a typical equipment configuration.

Centinel GCS System

GENERAL DESCRIPTIONThe Centinel is a downhole measurement system designedfor use with electrical submersible pumping equipment inoilfield, water, mining and other applications. It is comprised ofthree components: (1) downhole sensor, (2) the SurfaceInductor Package (SIP), (3) the Surface Electronics Panel(SEP). When installed, the Centinel will provide highlyaccurate, reliable measurements of downhole pressure andtemperature.

Centinel can be used as a stand-alone unit or as part of asystem that includes a variable speed drive or motor controller.

ARCHITECTURE

Downhole Sensor: consists of the electronics boardwhich may be contained either in carbon steel orferritic housing that is bolted to the bottom of an ESPmotor.

Surface Inductor Panel (SIP): also known as a chokepanel, serves as the interface between the ESPpower system (cabling) and the Surface ElectronicsPanel (SEP). The Surface Inductor Panelfilters thecommunication signal off of the AC power line (which

powers the motor) and sends it to the SEP. Surface Electronics Panel (SEP): receives

communications signal from the SIP. The SEP iscomprised of three modules: (1) Centinel PowerSupply (CPS), (2) Centinel Interface Module (CIM),and (3) Auxiliary Power Supply (APS).

GCS Display mounted on SEP

o For the GCS integrated configuration, theAPS is omitted.

o Additional modules can be added as optionsfor further enhanced operation.

See Appendix B for a block diagram of how these moduleswork together and associative part numbers (PNs).

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FEATURES

SEP surface operating temperature range of 0 to+55C (32 to 131F)

NEMA 4 enclosure (for stand alone configuration) Simple, pre-calibrated setup of downhole sensor

Easy to understand graphical, LCD display (Optional)

Measures pressure 14.7psi to 5000psi

Measures temperature 77F to 302F

Exterior of SurfaceInductor Panel (ChokePanel) w/Optionalenclosure

Modular bottom-of-motor design with heavy dutyhousing as standard

Communicates over standard ESP power cable

Delta or Wye connections for choke panel

OPTIONS

Data logging (when integrated with GCS drives andswitchboards)

4-20mA analog outputs

SCADA interface via Modbus RTU (RS-232/422/485)

Seamless integration into GCS drives andswitchboards

Stainless, NEMA 4X enclosure options

Surface Choke Panel

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INSTALLATION

INITIAL CHECKS

Before installing the equipment, check the unit for:

Visual damage to the shipping container or cabinet.

Packing. Remove all packing materials such as tape,foam, shipping restraints, and padding.

Physical damage to equipment.

Correct application. The equipment nameplate data,transformers, and load must be compatible.

Internal connections. Ensure that all circuit boards,cables, components, and connectors are securely inplace.

Downhole Components The downhole components of theCentinel system should be mounted to a compatible electrical

submersible motor. At present, all Centrilift o ffered motorsare compatible with the standard Centinel sensor, withthe exception of the 375 series .Component sizes andapplication data should be compared to motor and pumpcharacteristics to make sure that correctly sized equipment isinstalled.

Al l necessary precaut ions should be taken to ensureintegrity of environmental seals and electricalconnections.

Surface Components The surface components of theCentinel are housed in weatherproof, NEMA 4 enclosures

suitable for outdoor installations in non-hazardous locations.

POWER WIRING

The Auxiliary Power Supply (APS) is connected to theCentinel Interface Module (CIM) via the CITIBuscommunication cable. It converts the supplied 120VAC intothe +24VDC required to power the surface electronicdevices.

1The Centinel Power Supply unit (CPS) provides the

60 to 90VDC required by the downhole tool. It is also poweredby 120VAC and is connected to the CIM and to the SurfaceInductor Panel. The output of the surface inductor is

connected to the downhole power cable, and as such hashigh voltage present on its lugs and connectors. Use properprecautions when connecting, inspecting and commissioningthese connections. [See Appendix B]

1The APS is not included in the GCS-integrated configuration

of the Centinel system, as the CITIBus power is alreadyavailable within the motor control system.

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CUSTOMER INTERFACE WIRING

APS, CPS, and CIM

Control inputs and outputs are interfaced directly to the plugand socket terminal strips mounted on the faceplate of theelectronic enclosures. AC control wiring should meet aminimum spec. of 18 AWG, and must run in conduit separate

from DC control wiring. Analog outputs (Pressure,Temperature and CPS Control) should be connected with ashielded, grounded, twisted pair cable, minimum 24 AWG.

NOTE:The Centinel Interface Module (CIM) utilizes astandard GCS Expansion I/O module for the analog outputsignals. Refer to the control schematic drawing in Appendix Bfor a visual depiction of the required interconnections.

The Centinel can be interfaced to other control andmeasurement equipment, using the provided digital andanalog outputs as outlined below.

ONBOARD DIGITAL OUTPUTS

The CIM provides two digital outputs in the form ofmechanical relays. These relays are rated for up to 120VACoperation at a maximum current of ten amps. One of therelays is used to control power to the Centinel Power Supplymodule (CPS 120VAC), the other is used to annunciate thesuccessful completion of the power-on self test operation ofthe system. This relay (STATUS RELAY) can be interfaced tocustomer inputs, thereby providing a functional CentinelInterface Module signal. It does NOT indicate a functionalgauge only a functional CIM.

ONBOARD ANALOG OUTPUTS (To Sensor)

The Centinel Interface Module (CIM) provides one analogoutput used to control the output DC voltage of the CentinelPower Supply (CPS). In order for the system to functionproperly, connection must be made between this controloutput, labeled CONTROL and the power supplys controlinput.

GCS EXPANSION I/O MODULE (Opt ional)

The Centinel Interface Module (CIM) utilizes a standard GCSExpansion I/O (EIO) module, as an option, to provideelectrically isolated 4-20mA current loop analog signalsproportional to the measured temperatures and pressure.These self-powered output signals can be connected to anycompatible 4-20mA input with an input impedance of less than900 ohms. The pressure and temperature outputs are locatedon the standard GCS EIO connected to the CIM. Thepressure is generated on Expansion I/O module 1 Analog

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Output #1. The well temperature signal is generated onExpansion I/O module (EIO) 1, Analog Output #2.

The motor temperature signal is generated on EIO 2, AnalogOutput #1.

Centinel 3

EIO1 Output #1 WellPressure

14.7 5000PSIA *

4-20 mA

EIO1 Output #2 WellTemperature

0 302 F * 4-20 mA

EIO2 Output #1 MotorTemperature

0 302 F * 4-20 mA

* With the GCS versatility, the zero and range values thatcorrespond to 4 and 20mA are user selectable. For moreinformation, consult the GCS Expansion I/O Manualavailablethrough Centrilift.

When integrated into a GCS system, the analog outputs areidentified according to their signal source parameter. Thiswill correlate one value (e.g. Centinel pressure) to an analogoutput of interest (e.g. EIO3, AO2). This functionality is alsocovered in the GCS Expansion I/O Manual.

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BASIC OPERATION

Information from the downhole sensor is transmittedbymeans of a modulated DC current to the Surface ElectronicsPanel (SEP) via the Surface Inductor Panel (SIP). The surface

inductor package will superimpose a DC Voltage supplied bythe Centinel Power Supply (CPS) unit onto the downhole ACpower cable. The downhole sensor intermittently attenuatesthis DC voltage creating a modulated DC current upon the ACpower cable. This modulated current is routed through theCPS to the CIM surface electronic unit which decodes theembedded serial information.

CentinelThe Centinel downhole sensor maintains a record of its ownserial number and calibration information with the device.

After sending the serial number as part of the start-upinitialization, the sensor only transmits data values for

pressure and temperatures.

The Centinel initialization sequence takes approximately oneminute every time the downhole tool is powered up. Thepressure and temperatures are updated with new valuesevery 17 seconds thereafter.

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COMMISSIONINGCentinel is designed to be a simple, stand alone unit thatoperates without operator calibration and with a minimumamount of operator configuration. Additionally, the Centinel

unit is designed to operate with or without a GCS display unitattached. However, connecting a GCS display unit will assistwith initial installation and troubleshooting efforts. Therefore,the following section of the manual depicts the use of thisoptional GCS display unit. Note that if a display unit is used,compatible software must be loaded. Consult the inside frontcover for applicable software revisions.

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SURFACE INDUCTORINSTALLATION

NOTE: As lethal vo ltages may be present, Centinelequipment should be installed, adjusted and serviced byqualified electrical maintenance personnel. Beforebeginning any work ensure power has been disconnectedand locked out.

The Surface Inductor Package (SIP) is always installed on theoutput side of the step-up or isolation transformer thatconnects to the motor. Please take note of Appendix B for awiring block diagram. Each of the three input wires must beattached to each phase of the three phase system and anappropriate ground wire.

Surface Inductor Package

showing input fuses

For installations with a variable speed controller (VSC), the

step-up transformer secondary should remain ungrounded toallow proper Centinel communication.

For installations with a switchboard and no isolationtransformer, the incoming power should remain ungroundedto allow proper Centinel communication.

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SENSOR INSTALLATION

The Centinel downhole sensor is electrically connected to thebottom of the motor by attaching the Centinels I-wireconnection to the Y-point of the windings. This point is found

in the base of the motor, behind the motor base cap.

If the motor is an upper tandem motor, a Y-point shorting plugshould be installed prior to sensor installation.

Use the following procedure to install the I-wire receptacle(female connector PN 902622) on the motors Y-point thatconnects to the Centinel downhole sensor.

Y-CONNECTION/I-WIRE1. To reduce the amount of oil loss, support the motor so

that the base is above the motor head. Remove theshipping cap from the Centinel downhole sensor.

Replace the O-rings on the sensor head.

Figure 1

2. Remove the motor base cap and save the fasteners.

3. Carefully uncoil the I-wire (wire from Y-point) from themotor base. If the I-wire end has been wrapped, cutoff approximately one to two inches from the end ofthe wire. Likewise, if the wire has been encased inshrink tubing; carefully remove about 4.25 (10.8 cm)of shrink tubing from the wires to expose a workableamount of wire.

4. Clean wires with alcohol.

5. Remove and lay out the parts of the receptacle foreasy access, make sure that a black rubber boot, awhite insulator and metal socket are present. [Figure1]

6. Slide black rubber boot over wire (small end first).Once that is seated against the shrink tubing, slidethe white, rigid insulator (rounded end towards theblack boot) onto the wire. Push insulator into blackboot about (0.635cm) to help steady the assembly.[Figure 2]

Figure 2

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Figure 37. Being careful not to cut the wire, use wire strippers to

strip back (0.635cm) of insulation from the I-wire toexpose the conductor. [Figure 3 & 4]

Figure 4

Figure 5

8. Place the copper end of the metal socket over thewire and crimp using crimping tool (PN 902623).[Figure 5 & 6]

NOTE: Only put crimp jaws on the copper band!

Figure 6

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Figure 79. Using a small rod or as pictured, an instrumentation

screwdriver known as a tweaker push the metalsocket into the white insulator until it seats flush withthe ridge internal to the insulator. If the Centinelsensor is in position to mount when assembling thissocket, use the Centinel plug to push socket into theinsulator [Figure 7 & 8]

10. Insert the insulator into the black rubber boot about (0.635cm). The socket is now ready to accept theplug from the Centinel sensor. [Figure 9]

Figure 8

Figure 9

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INSTALLING ON MOTORNOTE: Although built as a rugged p iece of equipment,this sensor contains delicate pieces of electronicinstrumentation and should be handled as such. Properhandling should be exercised to insure no extreme shock

or electrical in terference (static). Never put tension or

stress on the connection w ires and never supportthe motor/string weight by only theattached sensor.

Place the sensor near the end of the motor. Plug I-wireconnectors together by pushing the Centinel plug so it seatsfirmly against the white insulator/receiver on the I-wire fromthe motor. Then, push the black boot over the top of the wholeassembly so the insulators slide back into the boot, where theinternal groove on the boot seats on top of the Centinel plugsraised ring. This will be fairly tight. When the motor

temperature option is not used, carefully coil I-wire into theend of the motor and end of the Centinel unit. [Figure 10]

Figure 10

NOTE: There are two considerations when installing a 1Kohm RTD kit (PN 901896) for motor temperaturemeasurement:

1. When installed at a field service center, consultmanufacturing method MM9770 for proper procedure.This details installing the RTD into the base plate.

2. When installed using the mounting sleeve includedwith the RTD kit, locate the RTD as close to the motor

winding base plate as possible with the tie wrapsprovided.

Crimp RTD wires to wires coming out of Centinel unit usingbutt splices provided.

Lubricate the O-rings with petroleum jelly or other suitableproduct.

Figure 11

Lift sensor and carefully slide the Centinel head onto the baseof the motor. Align the Centinel holes with the motor baseholes, insert bolts and lock washers and tighten firmly [Figure11]

When refilling the motor and sensor, ensure that the oil usedwas specified for that particular motor. For more detailedinformation on oil refilling refer to the Field Service Manual.

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THE GCS MENUS

The following section provides definitions of the GCS menusand parameters that are available to the user of a stand alonesystem. The menu structure shown below is for a CIM as aMaster unit (MR/SL jumper out) in a stand alone system.

Consult the table in appendix B on page 29for relevant partnumbers of other Centinel systems and associative MR/SL

jumper positions. In those configurations with the Centinel asa Slave unit (MR/SL jumper in), relevant Centinel informationcan be found under the GCS Modules, Centinel Module sub-screen selection.

If more information is required for GCS operating systemconventions and menu navigation, please refer to theElectrospeed GCSor Vortex GCS Operators Manuals.

OVERVIEW OF CENTINEL GCS MENU STRUCTURE

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MENU SCREEN

Screen 3

Screen 2

Screen 1

The MENU screen provides access to each of the sub-screens in the Centinel system. It is the initial screen shownfor a CIM master system. For other applications with the CIM

as a slave, the Status and Setup screens are located withinthe GCS Modules, Centinel Module sub-screen selection.Move the cursor over the appropriate square using the arrowkeys and press ENTER to display that screen.

GCS MODULES

The GCS Modules screen provides access to the input/outputmodule screens as well as the Centinel module whenintegrated into a GCS variable speed drive or motor controllersystem. The setup and calibration is performed in the factory,so these screens are used to view the present configuration.

ONBOARD I/O

The Onboard I/O menu provides access to the inputs andoutputs available withinthe Centinel Interface Module itself.Select Onboard I/O and press the ENTER key to view thepertinent menus.

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INT ANALOG OUT 1

Screen 4

This internal analog output of the Centinel Interface Module(CIM) is used to control the Centinel Power Supply outputvoltage level. The CIM will normally adjust this valueautomatically eliminating the need for manual adjustments.

INT DIGITAL OUTPTScreen 4 provides user access to internal digital output #3(relay). Digital output #3 is used to connect or disconnect the120VAC power to the Centinel Power Supply (CPS) unit.Disconnecting the power to the downhole tool has the effect ofresetting it. It will then re-transmit the serial number andcalibration data as it does at every power up. The CIM willnormally control this relay automatically and user adjustmentis not necessary. It is also accessible through the CentinelGCS Setup screen, Manual Gauge Reset parameter.

Screen 5

EXPANSION I/O MODULE 1 (OPTIONAL)The CIM utilizes a standard GCS Expansion I/O module togenerate the 4-20mA analog output signals proportional to themeasured intake pressure and temperature. Access to thesetup and calibration screens is through this menu. The CIMmodule adjusts the analog output parameters automatically,eliminating the need for user adjustment. Move the cursor tothis location and press ENTER to access the sub-menus. Themenus and parameters are identical to a standard expansionI/O module, therefore only a brief description is afforded in this

manual. For a more complete description, please refer to theGCS Expansion I/O Manualavailable through Centrilift orconsult the BakerHughesDirect.com website.

Screen 6

EXP I/O 1 AI1 and EXP I/O 1 AI2Both of the screens associated with analog input 1 (AI1) or 2(AI2) display similar parameters, but relate specifically toanalog input 1 or 2. Analog input 1 screen is shown in Screen6 for reference. These inputs are not utilized in the standard

Centinel configuration but are mentioned because they will beseen while scrolling through the menu structure.

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EXP I/O 1 A01 and EXP I/O 1 A02

Screen 8

Screen 7

Both of these screens display similar parameters, but relate toanalog output 1 or 2. Analog output 1 which correlates toCentinel Intake Pressure is shown in Screen 7 for reference.

Analog output 2 correlates to intake temperature.

EXP I/O 2 A01This screen displays the parameter related to analog output 1that correlates to the motor temperature.

GCS MODULES STATUSThe GCS Modules Status menu enables the user to verify thatthe Expansion I/O module used by the system is enabled forcommunication. The GCS Expansion I/O module is used togenerate the 4-20mA analog output signals proportional to themeasured pressure and temperatures with Centinel 3. Pressthe ENTER key to view the status screen as illustrated inScreen 8.

Screen 9

MODULE STATUSThe module status screen shows if the Expansion I/Omodules #1 and #2 are enabled for communication with theCIM. The CIM will always poll for these modules at power-upand the user should never need to enable them manually.

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Screen 12

CENTINEL UNITSThere are two options for the units of the Centinel parameters:imperial (abbreviated IMP) and SI (Systme Internationald'units, i.e. International System of units). The imperial unitsare PSIa and degrees Fahrenheit. The SI units are bars anddegrees Celsius.

CENTINEL COM FAIL ALARMThis parameter is used to enable/disable the CentinelReceiver Communication Alarm. Installations that depend onvalid pressure values to control frequency may require this tobe enabled. When set to yes and Centinel communicationsfail, the GCS device will shut down on CENT RCV COM fault.

CENTINEL COM STATSThis is an additional diagnostic screen indicating the actualbinary values returning from the sensor.

Screen 13

MANUAL GAUGE RESETThis parameter is used to manually reset the gaugesinitialization sequence. When set to yes, the CIM will cyclepower to the CPS and begin the initialization process. Thisparameter will return to no automatically.

CENTINEL STATUS

Screen 13 shows the unit after it is first powered up andstarting its initialization phase. In a stand-alone system, this

screen is accessible from the status menu selection. Whenpart of a GCS variable speed drive or motor controller system,this screen is accessible from the GCS modules menuselection, then the Centinel module selection. Onceinitialization is complete (approximately one minute for the firstpacket), it displays the serial number of the downhole gaugeas well as the present values of the downhole pressure andtemperature. Screen 14 shows the unit immediately afterreceiving the first packet of data. Here is a basic descriptionof the other parameters on the screen:

Screen 14

S/N:Lists the serial number of the downhole tool.Sts (Status):Shows whether the gauge is actively functioning,

i.e. receiving pressure and temperature, in an idle state,evaluating the initialization string or has experienced an error.PS Lv (Power Supply Level): Indicates the percentage ofoutput DC voltage that is being applied to the downhole gauge.

Active Alarms: If the CIM is not receiving data from theCPS/downhole units, it will display an alarm message in thisarea.

EIO1 COM:When expansion I/O module 1 is not present orcommunicating.

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EIO2 COM:When expansion I/O module 2 is not present orcommunicating.

The following four alarms are generated from self-diagnosticsand are displayed only after numerous attempts to reset theCPS have failed to correct the problem.

Cntl Short Cc (Centinel Short Circuit):When the gaugesignal stops changing between start-up and the arrival ofthe first packet, the CIM decodes this as a short circuit.Cntl Open Cct (Centinel Open Circuit): When the gaugesignal drops below a minimum level, the CIM decodes thisas an open circuit.Cntl Sig Loss (Centinel Signal Loss):When the gaugesignal doesnt change within the normal period of time, theCIM decodes this as a signal loss.Cntl Noise (Centinel Noise):When five (5) consecutivepackets have invalid CRCs i.e. error checks, the CIMdecodes this as excessive noise on the signal wires.

Intake Pressure:Represents the pressure measured by the

downhole sensor.Intake Temperature:Represents the downhole measuredtemperature.Motor Temperature:Represents the measured temperatureof the 1K ohm RTD located close to the motor windings.Centinel Packets:a running count of data packets receivedfrom the Centinel tool.Centinel Errors :A running count of packets or data thatcould not be formatted into a legible data packet forprocessing. (Example: false reading due to noise)

Screen 15

After the initialization process is complete and true downholevalues are received (approximately 90 seconds), the screenwill be similar in appearance to Screen 15. The status - Sts:-parameter shows the abbreviation for Receiving Pressure &Temperature Rcvng PT and the Power Supply Level - PSLv:- has been automatically set to 37.5% output by the CIM.

At this point, the system will receive new pressure andtemperature data to update the display (and analog outputswhen connected) every 17 seconds.

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Note that the logging function must be disabled before accessto the data logging setup screen is allowed. Screens 17 and18 are used to configure data logging options. After the setupis complete, the configuration is stored within non-volatilememory and is retained even in the event of a power failure.In such a case, the user need not re-enter the setup, becausethe GCS will re-configure itself using this stored configurationonce power is restored.

Screen 18

DATA LOG SETUPThis screen provides the user with the ability to configure thetype and frequency of data to be logged. Up to twelve datavariables can be logged at frequencies up to 1 Hz. Each of thetwelve logged data variables requires the user to enter pointidentification (PID), start time and logging time interval. Aftercompleting the data log setuppress the MENU key to exit

Description Move the cursor to highlight one of the rows (1through 12) in the descriptioncolumn and press ENTER. Anew screen listing all available parameters will appear. Someof the available parameters are shown in screen 19. All fourarrow keys - up, down, left and right - will be active to locatethe variable of interest. When the item of interest ishighlighted, press the ENTER key to select that value.

Screen 19

Centinel data points (channels) are:

Centinel Data Point Names Centinel Channels

Ctnl Intk Pr Intake Pressure (PSIa)

Ctnl Intk Te Intake Temperature (F)

Ctnl Mtr Tem Motor Temperature (F)

(Start Time)The Start Time variable will delay thestart of data logging for this point the number of secondsentered. For example, entering 45 will cause the first logsample to occur 45 seconds after being enabled.

(Interval Time)Move the cursor to the IntervalTime column and press ENTER to set the time delay betweenlogged samples. This set point controls how often a datavalue is recorded for this data log point. The shortest intervalpossible is 1 second while the maximum time interval is 9999seconds (2 hours, 46 minutes, 39 seconds).

Dedbnd (Dead band)This point defines how much a loggeddata value must change before it will be added to the log file.

For instance, if the last logged data value is 17.5 and there isa dead band of 0.2, the values 17.3, 17.4, 17.6 and 17.7 willnot be logged. This parameter can help reduce log file size bynot logging values until they have significantly changed.

Enable This point controls whether the GCS Electrospeedcontroller will record (log) the data associated with thedescription field. If this point displays a check mark, , thedata will be recorded, if it displays an X, the data will not be

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logged. Move the cursor to this variable and press ENTER,then, press the UP or DOWN arrow keys to toggle the valuebetween enabled and disabled.

For further information regarding additional data loggingoptions please consult the PC card technical document.

SCADA INTERFACE (OPTIONAL)

SCADA interfacing can be accomplished when connected toan optional GCS host device (with interface capabilities, suchas the VCI-142). This provides RS-232 or -422/485 supportvia the Modbus RTU protocol.

For setup and wiring of the VCI-142, please consult the VortexInterface VCI-142 Operators Manual

Appendix C contains the Modbus addresses for Centinel datapoints as contained in the GCS motor controller.

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PICK-UP PROCEDUREFor more detailed information on pickup procedures refer tothe Field Service Manualor the manufacturing specificationsfor lifting motors.

RUN-IN-HOLE PROCEDUREWhile running in-hole, the Centinel system can be checked byperforming the following procedure:

1. When used in a GCS system, verify that the output of theswitchboard or VSC transformer is not connected to themotor cables.

2. Verify that the motor cables are connected to the cablesof the choke, i.e. Centinel Surface Inductor Package (SIP).

3. Between the junction box and cable reel on location,connect one wire between the ground of the junction boxand the armor of the cable reel. If the cabling has notbeen completed between the junction box and the SIP,the wire will need to be connected between the SIP andthe cable reel. Be sure both wires make good contact andobserve all customer safety requirements.

4. When used in a GCS system, power up the host deviceand go to GCS Modules, Centinel Module screen. In astand-alone system select status screen. Verify thestatus portion changes from Idle to Init and the PS levelchanges as necessary for proper communications.

5. After the first packet is received, the serial number (S/N)should change from 0 to the appropriate value of thegauge in question. The status should change from Init toRcvng PT.

6. Upon receiving the next packet, the displayed pressure

and temperature values should change from 0.0 to therespective sensor values.

7. Verify with the next few packets that the values remainfairly constant.

8. Power down host device or stand-alone system.9. Remove wire connection to cable reel.

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MAINTENANCEOnly minor adjustment and basic interconnection should be necessaryon initial start-up. Over time, some common sense maintenanceshould be observed.

Operating Temperatures:

The surface electronic units are rated for operation in temperaturesbetween 0C to +55C (standard GCS operating temperatures).

Keep Surface Unit Clean:As with any electronic equipment, cleanliness will enhance operatinglife.

Keep Connections Tight:The equipment should be kept away from high vibration areas thatcould loosen connections or cause chafing of wires. Allinterconnections should be re-tightened at initial start-up and at leastevery six months.

CHECKING PULLED UNITThe following procedure is to be used as a guide for checking theCentinel downhole sensor when it has been pulled from a well1. Note physical condition of entire assembly (ESP and sensor).

Check any areas that exhibit unusual wear or discoloration on thehousing.

2. Check motor oil (drain sample) for evidence of well fluidcontamination

3. If motor oil proves non-contaminated, connect {test} leads fromhost device or Surface Electronic Panel to ground and phase ofmotor.

4. Power up.

a. Pressure should read within tolerance of atmospheric (14.7PSIa, 1.01 bars) when temperature is above 75 F (24 C)This range is from -10.3 to 39.7 PSIa or -0.71 to 2.74 bars.

b. Temperatures should read within tolerance of ambient inFahrenheit or Celsius.

5. After checking unit for functionality, power system down andremove test leads.

6. Proceed with megger testing of sensor7. Megging: Reverse polarity (i.e. positive ground) is necessary

to prevent electronic failure to the downhole gauge. This requiresthe positive polarity to be connected to the armor of the cable andthe negative connected to the phase of interest. It would be bestto start at the lowestsetting first to verify proper electrical

connection before proceeding to higher voltages.

Do NOT exceed maximum rating of motor.

NOTE:If the motor oil sample is contaminated with well fluid or otherdebris, the downhole sensor should not be rerun. Once the electroniccircuitry in the sensor has been exposed to fluid or contamination, thelongevity of the sensor could be compromised.

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TROUBLESHOOTING

IMPORTANT SAFEGUARDSThe Centinel equipment should be installed, adjusted andserviced by qualified electrical maintenance personnel.

WARNING

The following warnings must be heeded. Failure to do socould result in personal injury or death!

Lethal voltages are present within the cabinet wheninput power is applied.

External voltages could be present in the customertermination area even with all power removed fromthe drive input.

To prevent component damage, do not remove anycable connectors without eliminating all power tothe CIM and CPS

Once installed, the Centinel system is designed to power upand function without operator intervention. If for some reasonit fails to function properly, the user should perform thefollowing measurements and tests:

1. With power off, check the line fusesin both powersupplies, and if necessary, replace with the same ratedfuses

2. Test to ensure that 120VAC 50/60Hz power is availableat the input terminals for the two power supply units,namely, the Centinel Power Supply and the AuxiliaryPower Supply.

3. After verifying the presence of control power, look forthe power indicator LEDs.They should be visible on thefaceplate of the Auxiliary power supply, the ExpansionI/O module (if installed) and the Centinel InterfaceModule.

4. If the power indicator LEDs are illuminated, look furtherinside the CIM and EIO enclosures for the flashing LEDindicator. If this flashing light is visible, it indicates thatthose modules have successfully completed the poweron self-test.

5. At this point a graphic display unit should be connectedto the CITIBus connector. View the STATUS screen forany alarm or fault indicators shown.

6. A note on voltages in the surface panel: The CentinelPower Supply (CPS) requires 120 VAC to work properly.The neutral of the needed voltage is connected directlyto the CPS and the hot portion is routed through theCIMs relay. During the Idle status, the relay will be offand the voltage will not be present. During initializationand regular communication times, the voltage should bepresent. The voltage leaving the CPS going to thegauge is usually changing values so only anoscilloscope would provide relevant data. For

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troubleshooting purposes, the DC voltage can rangefrom 60-90V. The voltage leaving the CPS as the signalvalue will usually range from 4.5 to 7.5 VCD but will bechanging values according to sensor data. The controlsignal is a current signal and thus it is rather difficult tocheck with a voltmeter or interrupt the circuit to checkwith an ammeter. It can range from 4 to 20 mA andcorrelates to the voltage leaving the CPS.

Additional troubleshooting assistance can be found in theCentinel Troubleshooting Guide manual available at theBakerHughesDirect.com website.

ERROR RECOVERYIn the event of loss of communication from the Centinel PowerSupply, the Centinel Interface Module will react accordingly:

1. If the incoming signal from the Centinel Power Supply(CPS 0-10Vdc) is lost, the software will reset the gauge

by interrupting the 120Vac power supply to the CPS.The software will then wait 30 seconds, apply power tothe CPS again and attempt to detect the gaugeinitialization sequence. If an error occurs during theinitialization process, there will be three retries beforeshutting down on err. Within the main status screen,the type of error will be announced according to theself-diagnostics section below.

2. If the software counts 5 consecutive errors in packetsreceived from the CPS, the Centinel Interface Module(CIM) will attempt to re-initialize the communication link.This is done by interrupting the power to the CPS,waiting 30 seconds, then re-applying power to thegauge and attempting to detect the initializationsequence from the gauge. Reception of a packet with avalid CRC causes the error counting to be reset to zero.In other words, a sequence of up to four bad packetsfollowed by one good packet will not cause the CPSpower to be interrupted.

SELF DIAGNOSTICSThere are four types of errors that the Centinel system detects:

1. Centinel Signal Loss- This is usually a momentaryannouncement in the status screen while the CIMcycles power.

2. Centinel Short Circuit- Indicates that a short circuit has

occurred between the signal cable and ground.3. Centinel Open Circuit- Indicates that an open circuit

condition exists with either the signal cable or ground.4. Centinel Noise- Indicates that too many communication

packets have CRC (Cyclic Redundancy Check) errorswhich is interpreted as excessive noise.

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APPENDIX A: CENTINELSPECIFICATIONS AND RATING

Surface Electronics Equipment

Operating Temperature: 0 to +55C (32 to 131F)Storage Temperature: -50 to +85C (-58 to 185 F)

Analog Output Accuracy: 4-20mA, 0.01% of full scalemax. impedance: 900 ohm

Input Power: 120VAC / 150mA60Hz nominal

Fused Input Power: 4 Amp

Surface Electronics CE Compliant Part Numbers

Description Part NumberStandard SEP, display only 903275Dataloggable SEP 903276Dataloggable SEP w/ SCADA 903277SEP with analog outputs 903278Dataloggable SEP w/ analog outputs 903279GCS retrofit kit 903288

Downhole System Specifications and Ratings

Parameters Measured

Centinel 3 Pi, Tw, TmPressure Range 5000 psiPressure Accuracy 0.5% F.S. ( 25psi)Pressure Resolution 0.002% F.S. (0.1psi)Temperature (measure) 77-302FTemp Meas. Acc. 1.8FTemp Meas. Res. 0.1FMegging Voltage -5000VDCData Transmit Method DigitalUpdate Rate 17 secondsMax. Cable Length 300,000 Meters (984,252 FT.)Serial Number Stored in D/H Tool, Transmitted

to surfaceWeight 87 lbsLength 51.70 / 49.26 [with/without p/n

902244 shipping cap]

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APPENDIX D: MODBUSADDRESS MAP FOR CENTINELDATA POINTS

System Tag Name Descript ion Units/Multiplier Hexaddress

Decimaladdress

IMP SI

CSU_PRESSURE Intake Pressure psi / x10 bars / x1000 0x0130 30305

CSU_TEMPERATURE Intake Temperature F / x10 C / x10 0x0131 30306

CSU_MOTOR TEMPERATURE Motor Temperature F / x10 C / x10 0x0132 30307

CSU_FLUID RESISTANCE Reserved for future use Integer 0x0133 30308

CSU_SERIAL_NUM_LO Low word for serialnumber

2Integer 0x0134 30309

CSU_SERIAL_NUM_HI High word for serialnumber

Integer 0x0135 30310

CSU_PRG_REV_NUM Centinel firmwarerevision number

Integer / x100 0x0136 30311

CSU_GAUGE_TYPE Sensor type3 Integer 0x0137 30312

Read-only, input registers (3XXXX)

2The serial number can be assembled by the following

formula: ([hi value] x 65536) + (low value)31 = Centinel 2, 2 = Centinel 3

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centinel manual (ver1v4)

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