Rockwell-automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 Manual do Utilizador Página 1

DC3E Non-Regenerative DC DriveUser Guide1/4 to 2 HP, 115/230 VACInstruction Manual D2-3452-1M/N DC3N-12D-00-010-AIM/N DC3N-12D-4X-010-AI250-0287-rev2.

Minimum Speed Trimpot Range (% of rated voltage) 0to50%Torque Trimpot Maximum Setting (% of maximum current) 200%IR Drop Compensation (% of rated arma

Drive RatingsDC Motor MotorRated DC Armature Field FieldMotor AC Line Input Armature Current Voltage CurrentHP Amps KVA Voltage (Amps) (Amps)1/4 4.5 0

4Dimensions and LayoutFigure 1. DC3N-12D-00-010-AI Dimensions250-0287-rev2.qxd 3/12/01 10:27 AM Page 4

5DimensionsTHREE 0.88 [22] KNOCKOUTSALL DIMENSIONS IN INCHES [MILLIMETERS]Figure 2. DC3N-12D-4X-010-AI Dimensions250-0287-rev2.qxd 3/12/01 10:27 AM Pa

6 Dimensions and LayoutFigure 3. PC Board Layout250-0287-rev2.qxd 3/12/01 10:27 AM Page 6

7InstallationATTENTION: Only qualified technical personnel,familiar with the construction and operation of thisequipment and the hazards involved, sho

Wiring8 InstallationATTENTION: Circuit potentials are at 115 or 230VAC above ground. To prevent the risk of injury orfatality, avoid direct contact wi

9Installation*Reliance Electric considers this an unfavorable condition and does notrecommend bundling power and logic leads for any length.ATTENTION:

10 InstallationMountingProtect the drive from dirt, moisture, and accidentalcontact. Provide sufficient room for access to the terminalblock and calib

The chassis units do not have to be earth grounded. If youchoose to ground the chassis, use a star washer beneath thehead of at least one of the mount

Trademarks not belonging to Rockwell Automation are property of their respective companies. ©2001 Rockwell International Corporation All rights reserv

12 InstallationATTENTION: Most code requires that upstreambranch protection be provided to protect input powerwiring. Failure to observe this precauti

13InstallationLine fusingThis DC3 drive model has 15-amp line fuses preinstalledon fuse holders 501 and 502 (FU501 and FU502). Whenreplacing the line

14Figure 4. Speed Adjust PotentiometerInstallationSpeed adjust potentiometerInstall the circular insulating disk between the mountingpanel and the 10K

15Alternate speed adjust potentiometer connectionsAlternate speed adjust potentiometer connections may befound in the Application Notes section of thi

16Cage-clamp terminalsLogic connections are made to cage-clamp terminals. Toinsert a wire into the cage-clamp terminal:Figure 5. Cage-Clamp TerminalIn

17InstallationATTENTION: Do not connect this equipment withpower applied. Failure to follow this directive mayresult in fire or serious injury.ATTENTI

18 InstallationATTENTION: Installation of a master power switch inthe input line is required. This is the only way todisconnect power from the motor.

19InstallationConnect a motor to terminals A1 and A2 as shown inFigure 6 (page 23). Ensure that the motor voltage rating isconsistent with the drive’s

20 InstallationATTENTION: Do not make any connections to F1 andF2 when using a permanent magnet motor. The fieldoutput is for shunt wound motors only.

21START/STOP pushbuttonsInstallationPushbutton operation of the DC3N drive requires that a(momentarily) normally-closed STOP pushbutton be wiredto ter

iATTENTION: Only qualified personnel familiar with theconstruction and operation of this equipment and thehazards involved should install, adjust, ope

22 InstallationUsing tachometer feedback improves speed regulation fromapproximately 1% of motor base speed to approximately0.1% of motor base speed.

Figure 6. Chassis Drive Connections23InstallationNOTES1. L1 IS THE HOT TERMINAL.2. L2/115 IS THE NEUTRAL TERMINAL FOR 115 VAC INPUT.3. L2/230 IS THE N

24 InstallationFigure 7. Chassis Drive Signal Follower ConnectionVoltage or current followerInstead of using a speed adjust potentiometer, these DC3Nm

25Enclosed driveMountingThe NEMA 4X enclosed drive comes with 0.88 inch (22mm) conduit knockout holes at the bottom of theenclosure. The units may be

266. Turn the slotted screw clockwise until tight to secure thefront cover.7. Set the POWER switch to the OFF position beforeapplying the AC line volt

27InstallationConnectionsATTENTION: A single fault like a power device shortmay cause motor rotation when in the stop mode. Theuser is responsible for

28 InstallationMotorATTENTION: To provide the motor with overloadprotection, local, national, and international codes (e.g.,NEC/CEC) require that a mo

29InstallationPower inputConnect the AC line power leads to terminals L1 and L2 asshown in Figure 8 (page 31). Ensure that earth ground isconnected to

30 InstallationUsing tachometer feedback improves speed regulation fromapproximately 1% of motor base speed to approximately0.1% of motor base speed.

31InstallationFigure 8. Enclosed Drive ConnectionsNOTES1. L1 IS THE HOT TERMINAL.2. L2/115 IS THE NEUTRAL TERMINAL FOR 115 VAC INPUT.3. L2/230 IS THE

ii Safety WarningsATTENTION: Starting and stopping with the start/stopterminals does not disconnect AC power in the stopposition. A hardwired AC power

32 InstallationVoltage or current followerInstead of using a speed adjust potentiometer, these DC3Nseriesdrivesmaybewiredtofollowanexternalinputsignal

33InstallationSlide switchesSee Figure 9 on page 35 for all slide switch locations.LINE VOLTAGE (SW501 and SW502)Select the appropriate line voltage:

34 InstallationATTENTION: The DC3N does not have tachometerloss or a field loss protection. Loss of field ortachometer will cause the motor to run at

35Figure 9. Slide SwitchesInstallation250-0287-rev2.qxd 3/12/01 10:27 AM Page 35

36OperationATTENTION: Change voltage switch settings onlywhen the drive is disconnected from AC line voltage.Make sure both switches are set to their

37OperationBefore applying power (all models)ATTENTION: If the motor or drive does not performas described, disconnect the AC line voltageimmediately.

38 OperationDrive operationChassis drive operationPOWER ON startSPEED REFERENCE: External signal orpotentiometerSTART/STOP control: POWER ON/OFFIMPORT

393. Slowly increase the speed reference signal. The motorslowly accelerates as the potentiometer is turned CWor the external speed reference is incre

2. Apply AC line voltage.3. Slowly increase the speed reference signal and press theSTART pushbutton. The motor accelerates as thepotentiometer is tur

41OperationAlternate Starting and Stopping MethodsATTENTION: The DC3 Drive is intended to operateat a predetermined minimum speed. If the applicationr

Specifications 1Dimensions and Layout 4Installation 7Wiring ...8Shielding guidelines ...

42 OperationFigure 10. Run/Decelerate to Minimum Speed SwitchMinimum speedThe circuit shown in Figure 10 may be used to decelerate amotor to a minimum

43OperationDynamic braking may be used to rapidly stop a motor(Figure 11, page 44). For the RUN/BRAKE switch, use atwo-pole, two-position switch rated

44 OperationFigure 11. Dynamic Brake ConnectionDC3N DRIVETable 4. Minimum Recommended Dynamic BrakeResistor ValuesMotor Armature Minimum MinimumCurren

45OperationEnclosed drive operating modesThe mode selector switch on the drive, mounted on itscover, provides the option of operating in either MANUAL

46 OperationATTENTION: For frequent starts and stops, short theinhibit terminals, decelerate to a minimum speed, orapply a dynamic brake to the motor.

47OperationTo run the motor:1. Set the speed adjust potentiometer to “0” (full CCW).2. Apply AC line voltage.3. Set the POWER switch to the ON positio

48These DC3N drives have seven user adjustable trimpots.Each drive is factory calibrated to its maximumhorsepower rating. Readjust the calibration tri

49CalibrationFigure 12. Calibration Trimpot LayoutCURRENTLIMITIR COMPTACH VOLTSMAXIMUMSPEEDMINIMUMSPEEDACCELERATIONDECELERATION250-0287-rev2.qxd 3/12/

Drive Calibration ProcedurePrepare the DC3N drive for calibration as follows. Thisprocedure applies to both chassis and enclosed drives.1. Ensure that

51IMPORTANT: If you run the drive in AUTO mode, youmust recalibrate the MIN SPD trimpot to offset any motordrift caused by the input signal.The MIN SP

Field output . . ...29Tachometer feedback ...30Voltage or current follower ...

52 CalibrationMAX SPDThe MAX SPD setting determines the motor speed whenthe speed adjust potentiometer or external reference signalis set for maximum

53CalibrationCURRENT LIMITATTENTION: Although the CURRENT LIMITtrimpot is set to 120% of the maximum drive currentrating, continuous operation at that

6. Adjust the CURRENT LIMIT trimpot slowly CW untilthe armature current is 120% of motor rated current.7. Set the speed adjust potentiometer or extern

55CalibrationApproximate IR COMP calibration:If the motor does not maintain set speed as the loadchanges, gradually rotate the IR COMP trimpot CW. If

DECELThe DECEL setting determines the time the motor takes toramp to lower speed, within the limits of available torque.The DECEL setting is factory s

57CalibrationIMPORTANT: Calibrate the TACH VOLTS setting onlywhen a tachometer is used. The TACH VOLTS setting, likethe IR COMP setting, determines th

3. Set switch 505 (SW505) to ARM for armaturefeedback.4. Apply power to drive.5. Set the speed adjust potentiometer or externalreference signal to max

59CalibrationFigure 13. Typical CURRENT LIMITand IR COMP Settings for DC3N drive(actual settings may vary with each application)250-0287-rev2.qxd 3/12

60This section shows typical chassis drive connections.Multiple fixed speedsReplace the speed adjust potentiometer with series resistorswith a total s

61Application NotesFigure 15. Adjustable Fixed Speeds UsingPotentiometers in SeriesAdjustable speeds using potentiometers inseriesReplace the speed ad

DECEL ...56TACHVOLTS...57Application Notes 60Multiple fixed speeds ...

62Application NotesIndependent adjustable speedsReplace the speed adjust potentiometer with a single pole,multi-position switch, and two or more poten

63Application NotesATTENTION: The DC3 Drive is intended to operateat a predetermined minimum speed. If the applicationrequires zero speed operation, t

64 Application NotesFigure 17. Reversing Circuit Connection250-0287-rev2.qxd 3/12/01 10:27 AM Page 64

65Application NotesRUN/JOG switchUsing a RUN/JOG switch is recommended in applicationswhere quick stopping is not needed and frequent jogging isrequir

66 Application NotesFigure 18. RUN/JOG Switch Connection toSpeed Adjust Potentiometer250-0287-rev2.qxd 3/12/01 10:27 AM Page 66

67TroubleshootingBefore troubleshootingPerform the following steps before starting any procedurein this section:• Disconnect AC line voltage from the

68 TroubleshootingFigure 19. Diagnostic LED LocationsDiagnostic LEDsDC3N Series drives are equipped with two diagnosticLEDs (see Figure 19 for LED loc

69Problem PossibleCausesSuggestedSolutionsTroubleshootingLine fuse blows 1. Line fuses arethe wrong size.2. Motor cable orarmature is shortedto ground

70Problem PossibleCausesSuggestedSolutionsTroubleshootingLine fuse doesnot blow, butmotor does notrun1. Speed adjustpotentiometer,voltage externalrefe

71Problem PossibleCausesSuggestedSolutionsTroubleshootingLine fuse doesnot blow, butmotor does notrun (cont.)5. Drive is notreceiving AC linevoltage.6

Figure 1. DC3N-12D-00-010-AI Dimensions ...4Figure 2. DC3N-12D-4X-010-AI Dimensions ...5Figure 3. PC Board Layout ...

72Problem PossibleCausesSuggestedSolutionsTroubleshootingMotor runs toofast at set speed1. MIN SPD andMAX SPD settingsare too high.2. Motor fieldconne

73Problem PossibleCausesSuggestedSolutionsTroubleshootingMotor runs tooslow or too fast1. Switches are setincorrectly.2. MIN SPD andMAX SPD notcalibra

74Problem PossibleCausesSuggestedSolutionsTroubleshootingMotor will notreach thedesired speedMotor pulsatesor surges underload1. MAX SPDsetting is too

75TroubleshootingFigure 20. DC3N Block DiagramBlock Diagram250-0287-rev2.qxd 3/12/01 10:27 AM Page 75

Terminal descriptionsChassis drive terminalsL1 (TB501)Hot terminal for AC line voltage.L2/115 (TB501)Neutral terminal for 115 VAC line voltage.L2/230

T1, T2 (TB502)Connections to optional external tachometer.Enclosed drive terminalsL1 (terminal 1)Hot terminal for AC line voltage.L2/115 (terminal 2)N

Reliance Electric Corporation hereby certifies that itsDC3N series drives have been approved to bear the “CE”mark provided the conditions of approval

79CEComplianceExhibit “A”In addition to EMI/RFI safeguards inherent in the DC3Nseries’ design, external filtering is required.Reliance Electric requir

80 CE ComplianceIf the end-user is using a CE-approved motor, the correctfilter from Table 5 is all that is necessary to meet the EMCdirectives listed

The filters in Table 6 must be wired to the DC output ofthe drive, as close to the drive as possible. The groundconnection from the filter must be wir

SpecificationsMax.Armature HP Range HP RangeCurrent with115 VAC with 230 VACModel (Amps DC) Applied AppliedDC3N-12D-00-010-AI 10A 1/4–1 1/2–2DC3N-12D-

Notes250-0287-rev2.qxd 3/12/01 10:27 AM Page 82

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U.S. Drives Technical Support Tel: (1) 262.512.8176, Fax: (1) 262.512.2222, Email: [email protected], Online: www.ab.com/support/abdrives