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80-1403-01, Rev. 3

Feedback current representing 0% can be any-

value between 3 mA and 16 mA. Feedback current

representing 100% can be any-value between 8

mA and 21 mA. The current representing 100%

must be at least 4 mA higher than the current

representing 0%.

To set the current corresponding to 0%:

HART

Modify parameter FB RngLwr.

BCP

fdbk0pctma

To set the current corresponding to 100%:

HART

Modify parameter FB RngUpr.

BCP

fdbk100pctma

The relationship between the Feedback signal

and the output shaft position is set to Linear unless

otherwise specified. There are two choices: Linear,

and Inverse Demand. The purpose of Inverse

Demand is to allow a system to compare the

Feedback signal to the Demand signal, even if the

Demand signal is being used with characterization

inside the DCM-3. For information on Demand

characterization, refer to SETTING DEMAND

SIGNAL CHARACTERIZATION (page 26).

For example, if the Demand is set to Square

with a 4 mA to 20 mA range, then 12 mA Demand

corresponds to 25% position. If Feedback is Linear

with a range of 4 mA to 20 mA, then Feedback at

25% would be 8 mA. For some control systems,

having the Demand at 12 mA and the Feedback at

8 mA is an issue. The Feedback characterization

can be set to the inverse Demand curve so the

Demand and Feedback match at signal balance.

In this example, with Feedback set to Inverse

Demand and the output shaft position at 25%, the

Feedback signal would be 12 mA.

To choose Feedback characterization:

HART

Modify parameter FB Curve.

BCP

fdbkfunc

DCM-3

Configuration

Содержание 14-100

Страница 1: ...T O R S F O R I N D U S T R I A L P R O C E S S C O N T R O L 80 1403 01 Rev 03 INSTRUCTION MANUAL 14 109 14 209 MODELS with HART or Foundation Fieldbus Interfaces For actuators equipped with the DCM...

Страница 2: ...ore attempting to install or operate your actuator Group 22 digital actuators are designed for accurate reliable digital control in high torque applications The actuator is ideal for use in large boil...

Страница 3: ...34 DCM 3 HART 38 Menus 38 Messages 48 Foundation Fieldbus 52 Parameters 52 Transducer Block 54 Troubleshooting 62 Electronics w Foundation Fieldbus 64 Electronics w HART 68 DCM 3 Serial Interface 70 S...

Страница 4: ...tuator motors determine the actuator s output thrust timing and stroke adjustment The output shaft travel is limited by mechanical stops The mechanical stop for the fully extended or lower limit of th...

Страница 5: ...x Beck maintains complete build information for every actuator built The serial number is stamped into the nameplate which is fixed to the outside of the actuator housing The serial number is also use...

Страница 6: ...independent error Hysteresis 0 25 of span at any point Demand Signal Characterization Linear Actuator output shaft moves proportionally to the input signal Square Actuator output shaft moves proportio...

Страница 7: ...iency precision cut heat treated alloy steel and ductile iron spur gears Interchangeable gear modules permit field change of timing Stroke Adjustment Calibar simultaneously adjusts the stroke length p...

Страница 8: ...Valve Boss Dia Range in mm B Yoke Height in mm C Nominal Drive Shaft Extension in mm Max Valve Stem Extension Valve Stem Retracted in mm Approx Weight lb kg 14 100 5 16 1 3 4 8 44 1 2 5 8 25 67 8 203...

Страница 9: ...B Yoke Height in mm C Nominal Drive Shaft Extension in mm Max Valve Stem Extension Valve Stem Retracted in mm Approx Weight lb kg 14 100 3 4 3 1 2 19 89 1 3 8 3 3 4 35 95 19 13 16 503 12 5 16 313 9 1...

Страница 10: ...zed assemblies ready for pipeline installation CAUTION Whenever an actuator is being mounted on a valve it is good practice to remove the valve from service Observe the following precautions Know what...

Страница 11: ...shaft up into the actuator body until the mechanical stop is tight against the lower bearing plate 2 Turn off all electrical power and disconnect all electrical wiring from the actuator 3 Loosen the...

Страница 12: ...egrity and meet most electrical codes power and signal wires must be routed to the actuator separately The signal wiring should be either shielded cables or be installed in conductive conduit and or c...

Страница 13: ...direction of actuator movement in response to an increasing actuator set point page 30 For typical automatic operation this block must be in Auto mode and the Op Mode parameter Actuator_OPERATING_MODE...

Страница 14: ...of 250 ohm but must have signal filtering so the resistance appears to be 250 ohm at the communication frequencies Resistance of 250 ohm must describe the master slave connection but the effective re...

Страница 15: ...sed one at a time if a local HART master is connected directly across the Demand signal of that actuator PARALLEL CONNECTED OPERATION In some applications two or more Beck actuators may have the Deman...

Страница 16: ...r limit The Tight Seater is factory set to produce a thrust matched to the valve and should never be disassembled Control of the amount of valve stem threaded into the Tight Seater may be used to adju...

Страница 17: ...the jumper between field wiring terminals A and C page 12 WARNING AC power to the actuator must be off before removing the jumper AUTOMATIC The actuator is in Automatic mode when the Handswitch is in...

Страница 18: ...located in the Control End The Control End is shipped from the factory entirely configured and tested and most applications will not require changes For more information on the Control End refer to OU...

Страница 19: ...traditional DB9 signaling and can access all internal DCM 3 parameters and information This port can be used to configure any DCM 3 but it is not related to Foundation Fieldbus or to HART interfaces B...

Страница 20: ...pushbuttons Although the systems fully cooperate inside the DCM 3 the values inserted into the configuration registers may not agree with the values written by the HART communicator When using the pu...

Страница 21: ...9 When more than one status LED is required at one time the illuminated LEDs will cycle rather than illuminate all at once CONFIGURATION INSTRUCTIONS FORMAT The DCM 3 configuration section of this man...

Страница 22: ...eset when the temperature is brought back within the actuator rating This alarm lights the STAT LED and on models with a local configuration panel lights the TEMP F LED To read the present temperature...

Страница 23: ...t BCP stallprot To select the stall time FF Modify the parameter Stall Time HART Modify the parameter Stall Time BCP stalltime To read the number of Stall conditions FF Read the parameter Stalls HART...

Страница 24: ...er Range and Upper Range values are set to the customer specification and tested at the Beck factory If using a HART system the Demand Op Mode can be changed to allow the Demand to be assigned as a di...

Страница 25: ...the STAT and DEMAND LEDs will light When the input signal is corrected the actuator will automatically resume normal operation The DCM 3 can be configured to suppress the alarm even if the Demand sign...

Страница 26: ...nodes A node is an X Y point such as can be plotted on rectangular grid graph paper Segment 1 starts at node 1 and ends at node 2 Segment 2 starts at node 2 and ends at node 3 Segment 20 starts at no...

Страница 27: ...ing used start with node 1 and work to higher node numbers When reducing the number of nodes that are being used start with the highest node used and set that node to unused and work back toward lower...

Страница 28: ...cpsrotation If the direction is not retract for increasing signal follow the procedure listed in Setting Model Defaults If the position sensing signal to the DCM 3 is below 5 or above 105 of the range...

Страница 29: ...int is automatically defined as 0 or 100 The parameter Snsr Dir page 28 cannot be modified without a computer but should already be set correctly to Retract for an increasing signal To use the local i...

Страница 30: ...s or extends in reaction to an increasing Demand signal The correlation between the Demand signal from the control system and the shaft movement can be selected as either RET increasing or EXT increas...

Страница 31: ...modified See CONFIGURING FEEDBACK page 31 CONFIGURING FEEDBACK The Feedback signal in analog systems is intended to be a 4 mA to 20 mA signal Typically 4 mA represents 0 shaft position and 20 mA repre...

Страница 32: ...are the Feedback signal to the Demand signal even if the Demand signal is being used with characterization inside the DCM 3 For information on Demand characterization refer to SETTING DEMAND SIGNAL CH...

Страница 33: ...T POSITION OUTPUT SIGNAL page 28 There is often confusion in the calibration of the Feedback signal Situations can cause the appearance of an improperly trimmed Feedback signal but as these examples s...

Страница 34: ...mit switch cams are each set inside the mechanical stops and are positioned to provide an electrical over travel protection without opening in the normal operating range When changing the settings for...

Страница 35: ...electri cal adjustments are required before placing it in operation Each actuator is set up and calibrated to the customer s specifications that were written into the equipment order Under normal oper...

Страница 36: ...e switch lever with the switch lever on the lower part of the cam If this is not correct return to step 2 and reset the cam to the proper orientation 9 Drive the output shaft again to the fully extend...

Страница 37: ...no continuity switch contacts open switch clicks 6 Tighten the cam locking screw to 5 Ib in 0 56 N m torque 7 Disconnect the meter and reconnect power 8 Move the actuator s output shaft in the desired...

Страница 38: ...p menu to identify if the Feedback function is enabled and is used in the Online menu to identify the current signal Some data items only appear in appropriate circumstances such as when corresponding...

Страница 39: ...el 14 109 5 Drive S N 6 Instld 11 05 2015 7 Setup 11 05 2015 8 Calbrtd 18 05 2015 9 Review Poll addr 0 3C 3D Statistics 1 Starts 285213 2 Reversals 142606 3 Stalls 0 4 OverThrusts 5 Pk Thrust 6 TotRun...

Страница 40: ...signal is considered invalid LOSS OF DEMAND SIGNAL L O S page 25 12 LOS Mode Action on loss of demand signal LOSS OF DEMAND SIGNAL L O S page 25 13 LOS Pos Substitute Demand signal under some LOS mod...

Страница 41: ...uration Menu Block 5 This menu provides links to menus that contain common application specific parameters and contains two commands to use factory defined configurations 1 General Setup Link to Gener...

Страница 42: ...plays and or trims the DCM 3 Demand sensing circuit DCM 3 ANALOG SIGNAL CALIBRATION TRIM page 33 3 Feedback Displays and or trims the DCM 3 Feedback current sourcing circuit DCM 3 ANALOG SIGNAL CALIBR...

Страница 43: ...xcept in some custom configurations this direction should always be retract Demand Setup Menu Block 13 The parameters on this menu determine the signal range and the characterization of the Demand It...

Страница 44: ...not be run unless sudden output shaft movements are allowable 3 Identify Device Sends a HART command to the DCM 3 that causes the ACKNOWLEDGE LED to flash This is to make certain the HART system is ad...

Страница 45: ...DCM 3 is outside of the rating TEMPERATURE SENSING page 22 4 Thrust Inactive for Group 14 5 Over Thrust Stop Inactive for Group 14 6 Stalled A Stall alarm is active STALL PROTECTION page 23 7 Feedbac...

Страница 46: ...Dem Curve Spcl 22 DemNode17X Dem Curve Spcl 22 DemNode17Y Dem Curve Spcl 22 DemNode18X Dem Curve Spcl 22 DemNode18Y Dem Curve Spcl 22 DemNode19X Dem Curve Spcl 22 DemNode19Y Dem Curve Spcl 22 DemNode...

Страница 47: ...ealTimeClock 18 Seg 1 CW Torque 19 Seg 1 CCW Torque 18 Seg 10 CW Torque 19 Seg 10 CCW Torque 18 Seg 2 CW Torque 19 Seg 2 CCW Torque 18 Seg 3 CW Torque 19 Seg 3 CCW Torque 18 Seg 4 CW Torque 19 Seg 4 C...

Страница 48: ...ION SENSING page 28 This is a Beck specific message The DCM 3 is reading a CPS 5 signal that is outside of the range associated with a functional CPS 5 Refer to OUTPUT SHAFT POSITION SENSING page 28 T...

Страница 49: ...ut of the reliable measurement range The lower and upper limits are 0 1 V dc and 5 5 V dc respectively Note that current input DCM 3 boards utilize a 250 Ohm input resistor to convert the current sign...

Страница 50: ...ace or the local control interface is disabled an a pushbutton is being pressed This is a Beck specific alarm message that alerts the user that analog current is present on the Demand terminals but th...

Страница 51: ...mechanism for displaying the other messages displayed in this section If this message is displayed without an additional message the status cleared before the HART master read the additional status T...

Страница 52: ...written at any time If the fieldbus access tools provide for automatic updating of values the values should update without manual intervention The Beck DCM 3 always provides up to date parameter info...

Страница 53: ...ansducer Block are related to the Demand and Position Some of the parameters modify the actuator performance and some of the parameters give additional details One of the most important Transducer Blo...

Страница 54: ...ng output shaft 22 5 Inhibits LED Status allows remote checking of which LED s on the DCM 3 are illuminated 22 6 Inhibits Switch Status not used in Group 14 23 1 DCM BIST Operating Status summary of p...

Страница 55: ...the voltage from the CPS 2 to the DCM 3 that the DCM 3 will interpret as 0 output shaft position 31 3 CPS Ranges CPS Span the voltage span from the CPS 2 for the maximum travel of the output shaft Th...

Страница 56: ...not used in Group 14 38 2 EXT Trq Thr 2 not used in Group 14 38 3 EXT Trq Thr 3 not used in Group 14 38 4 EXT Trq Thr 4 not used in Group 14 38 5 EXT Trq Thr 5 not used in Group 14 38 6 EXT Trq Thr 6...

Страница 57: ...nits not used on Group 14 50 1 Info 2 LocalCntrl not used on Group 14 for Foundation Fieldbus 50 2 Info 2 LOS Mode not used on Group 14 for Foundation Fieldbus 50 3 Info 2 LOS Pos not used on Group 14...

Страница 58: ...racterization nodes 68 2 DemNode9 DemNode9Y allows setting the Demand characterization nodes 69 1 DemNode10 DemNode10X allows setting the Demand characterization nodes 69 2 DemNode10 DemNode10Y allows...

Страница 59: ...r 24 87 5 RT Clock Minute 87 6 RT Clock Second 87 7 RT Clock rtc_status 88 1 Beck Software Info DCM Software Rev 88 2 Beck Software Info Checksum 89 Device ID 90 Status 91 Reset Settings 92 Write Pro...

Страница 60: ...mNode11X 70 1 DemNode11Y 70 2 DemNode12X 71 1 DemNode12Y 71 2 DemNode13X 72 1 DemNode13Y 72 2 DemNode14X 73 1 DemNode14Y 73 2 DemNode15X 74 1 DemNode15Y 74 2 DemNode16X 75 1 DemNode16Y 75 2 DemNode17X...

Страница 61: ...lag 93 Reset Settings 91 Reset Stall 97 Reversals 25 4 rtc_status 87 7 ScrewTrav 49 16 ScrewTravUnits 49 17 Second 87 6 Set up OverTrqs Thrusts 25 8 Set up Peak Trq Thr 25 9 Setup 86 Shaft Dir 49 1 Sn...

Страница 62: ...on page 68 If Handswitch operation is improper analyze the symptoms 1 An actuator that runs in one direction but not the other is probably having difficulty with an over travel limit switch 2 An actu...

Страница 63: ...he DCM 3 is being bypassed perhaps by the Handswitch or the power output stage of the DCM 3 is stuck on The FWD and REV LED s indicate the signal level comparison between the Demand and the output sha...

Страница 64: ...e not as described the DCM 3 is not operating properly For DCM 3 to respond properly to the Demand signal the Resource Block and Transducer Block must both be in Auto mode and the Analog Output Block...

Страница 65: ...Checking Handswitch Operation page 62 2 The Handswitch or an Over travel Limit Switch is preventing power from reaching the motor Make certain the Handswitch is in AUTO The Handswitch and the DCM 3 bo...

Страница 66: ...a Stall alarm is active STALL PROTECTION page 23 14 Feedback Open the Feedback signal is enabled but cannot flow the proper current CONFIGURING FEEDBACK page 31 15 Switch Block the DCM 3 cannot power...

Страница 67: ...d while under HART FF Control The microcomputer configuration does not appear valid for Foundation Fieldbus BIST ANALOG SIG SATURATED Position out of accurate measurement range The DCM 3 is reading a...

Страница 68: ...s of the source of the Demand This value can have the following origins 1 the analog value measured from the signal loop 2 the digital value entered into the Manual Operation menu page 42 3 a value ch...

Страница 69: ...dswitch Operation page 62 2 The Handswitch or an Over travel Limit Switch is preventing power from reaching the motor Make certain the Handswitch is in AUTO The Handswitch and the DCM 3 both use the s...

Страница 70: ...ter connecting the DCM 3 to the Windows based computer access HyperTerminal by clicking first on Start then Programs then Accessories then Communications then HyperTerminal Double click on the Hypertr...

Страница 71: ...erent types of commands 1 Dual purpose commands These commands can be used to either modify DCM 3 configuration settings or display the settings already set in the DCM 3 In order to set or make a chan...

Страница 72: ...d Characterizer Commands page 74 charclear charlist charset demfunc Demand Signal Commands page 75 dem0pctma dem100pctma trimdem4 mA trimdem20 mA demlos demlosgtp Output Shaft Position Sensing Command...

Страница 73: ...ets and or displays the enabled disabled value for Stall protection Sets and or displays the time allowed for the actuator to reach its Demand target Sets and or displays the size in of one incrementa...

Страница 74: ...BECK MK2 n the polling address a value between 0 and 15 Demand Characterizer Commands Command charclear n charlist n charset n demfunc n Description Sets the status of a characterizer node to unused A...

Страница 75: ...e actuator during LOS Loss Of Signal LOS action options are sip stay in place or gtp go to position Demlos always reports both settings but only sets one argument at a time Demlos must be used twice t...

Страница 76: ...n exact angular Travel is not known The output shaft can be positioned to 100 then execute this command with an argument of 100 Travel will be adjusted to the correct number of degrees for this to be...

Страница 77: ...ector pin The DCM 3 pin that is used to source the Feedback signal can instead be used to power an output shaft position sensing potentiometer on models of Beck actuator that do not use the CPS 5 If t...

Страница 78: ...of the actuator including Time Date Demand Position Error Demand minus Position Step size Dead band Motor Status Motor Run Time Line Frequency Motor Starts Motor Reversals Stalls Number of Over Torque...

Страница 79: ...13 5 N m Reattach the motor per the instructions on page 80 This section covers replacement of many components of the Group 14 actuator Note that some components are not field repairable If it should...

Страница 80: ...e to replace individual switches To replace switch assemblies remove the top cover 15 16 bolt head Remove the 6 32 socket head cap screws holding the switch assembly to the plate Transfer the wires on...

Страница 81: ...he DCM 3 board remove the terminal compartment cover 1 2 bolt heads Loosen the four captive thumb screws holding the board to its mounting pads Note the L shaped mounting bracket on the end of the boa...

Страница 82: ...the replacement CPS 5 assembly Slide the rotor clamp end first onto the control shaft as close to the mounting plate as possible Leave the clamp loose Position the clamp in the same general location a...

Страница 83: ...higher 50 14 2840 30 13 20 1971 12 110 10 sec or higher 14 100 20 2703 24 34 60 14 2840 05 8 20 1971 12 110 8 sec or higher 50 14 2840 30 13 20 1971 12 110 8 sec or higher 14 200 20 2703 35 60 14 2840...

Страница 84: ...esistor select from table on p 41 7 Cover plate 24 Capacitor select from table on p 41 8 Cover plate gasket 25 Tight sealer 9 Shaft assembly 26 Shaft 10 Ball bearing 2 27 Bracket 2 11 Calibar slider 2...

Страница 85: ...85 80 1403 01 Rev 3 17 18 2 1 6 5 8 6 3 4 9 14 15 25 7 16 CONTROL ASSEMBLY AND DRIVE TRAIN...

Страница 86: ...esistor select from table on p 41 7 Cover plate 24 Capacitor select from table on p 41 8 Cover plate gasket 25 Tight sealer 9 Shaft assembly 26 Shaft 10 Ball bearing 2 27 Bracket 2 11 Calibar slider 2...

Страница 87: ...87 80 1403 01 Rev 3 14 15 17 18 2 1 6 5 8 6 3 4 9 14 15 25 7 16 CONTROL ASSEMBLY AND DRIVE TRAIN...

Страница 88: ...nected 15 Series Connected 15 Operation Modes of 17 Outline Dimension Drawings 8 Serial Interface Commands DCM 3 71 Serial Interface DCM 3 70 Services 89 Service How to Obtain 89 Setting Auxiliary Swi...

Страница 89: ...ice for three years from the date on which the equipment is shipped Improper installation misuse improper maintenance and normal wear and tear are not covered The Buyer must notify Beck of any warrant...

Страница 90: ...90 80 1403 01 Rev 3 NOTES...

Страница 91: ...91 80 1403 01 Rev 3...

Страница 92: ...92 2 19 11 TERRY DRIVE NEWTOWN PENNSYLVANIA 18940 USA PHONE 215 968 4600 FAX 215 860 6383 E MAIL sales haroldbeck com www haroldbeck com HAROLD BECK SONS INC R Made in USA...

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