Sew Motor - Rotating Right
Operating InstructionsMotors and BrakemotorsType BM (G) BrakesGeneralEvery SEW-Eurodrive motor is thoroughly tested,checked, and properly packed prior to shipment.However, please check immediately upon arrival forshortage of parts or transit damage. Note the damage or shortage on the freight bill of lading and filea claim with the carrier. Also, notify SEW-Eurodriveof the shortage or damage.InstallationFor motors mounted integrally to a gear unit, pleaserefer to the Operating Instructions for Gearmotorsand Gear Reducers for proper installation of thedrive. The drive installation site should be selectedto ensure: Ambient temperatures below 40 C (104 F). Unimpeded flow of air to the motor and variablespeed units. Accessibility to gear unit, oil plugs. Adequate space for the removal of thebrakemotor fanguard for brake adjustmentand maintenance.The drive unit should be mounted on a flat, vibrationdamping, and torsionally rigid structure. The flatnesstolerance of the supporting surface should notexceed:For motor size 180 and smaller — 0.004 inchFor motor size above 180 — 0.008 inchDo not hammer on the shafts to install couplings,sheaves, etc. Hammering can cause brinelling of thebearings and a reduction in bearing life. We recommend heating the components to approximately 175F and sliding them on. This will reduce possible damage to the bearings. In addition, there is a metrictapped hole in the center of the motor shaft that canbe utilized with a tool to press on or remove thecoupling, sheaves, etc.The motor shaft diameters are metric and have tolerances as listed in the SEW-Eurodrive catalogs. Shaftcouplings should be properly aligned to preventvibration, coupling wear and premature failure ofthe shaft bearings.Maximum Parallel Offset — 0.003 inchMaximum Angular Offset — 0.030 To prevent the output shaft and bearings from beingsubjected to excessive loads, the maximum overhungloads, as shown in SEW-Eurodrive catalogs, shouldnot be exceeded. Please consult our engineeringdepartment if the load may exceed the recommended figure given or where there are combined radialand axial loads. In such cases, the exact operatingdocument09 793 67 USsheet1 (7)dateB / 06.06.00conditions must be stated including speed, directionof rotation, position, magnitude and direction of theexternal radial and axial loads being applied.Long Term StorageIf the motor must be stored for a long period of timewithout operating, the motor must be stored in adry, protected area, and in the mounting positionindicated on the unit nameplate. In order to ensurethat the motor has not been damaged by moistureafter a prolonged storage, the insulation resistanceshould be checked. An insulation tester with a measurement voltage of at least 500V (e.g. magneto generator) should be used for this purpose. The insulation resistance is sufficient if it has an ohmic value ofat least 1000 x VN (e.g. at VN 230VAC: Rinsul 23000ohms 0.23M ohms). If the measured value is smaller, the motor should be dried before use (for example, with hot air up to a maximum of 90 C or by resistance heating with an auxiliary AC voltage of 10% ofVN via an insolating transformer). Care should betaken to ensure that the motor is heated with notmore than 20% of its rated current and that the risein temperature is not more than 90 C. The dryingprocedure can be stopped when the insulation resistance has reached 500000 0.5M ohms.Severe Duty UnitsSevere Duty Units are indicated with the letters “-KS”at the end of the motor type on the motor nameplate. Severe Duty units include drain holes in themotor end belts and conduit box at the lowest pointsallowing condensation to drain out of the motor.CAUTION! The drain holes are installed for themounting position listed on the gearbox nameplate.Installing a unit in a mounting position other thanwhat is shown on the nameplate will reposition thecondensation drain holes. As a result, the drainholes may not be located at the lowest point andmay not allow water to drain. This can cause premature drive failure.Electrical ConnectionThe motor must be installed and connected by aqualified electrician who is knowledgeable with theNEC article 430 and local regulations. He must makesure that the voltage and frequency of the electricalsupply correspond with the data stamped on themotor nameplate before connecting the motor inaccordance with the wiring diagram, which can befound in the terminal box. For brake connections,see the following pages.At installation the electrician must make sure thatthe terminal block jumpers are positioned correctlyand that all electrical connections including the
Operating InstructionsMotors and BrakemotorsType BM (G) Brakesdocument01 805 42 USsheet2 (7)dateB / 06.06.00Brake Coil ResistanceMotor FrameBrake SizeBrake Torque (lb-ft)BRAKE VOLTAGEAC (to rectifier VB)DCDT71-80DT80DT90-100DT100DV112-132S DV132M-160MDV160L-225BM(G)05 BM(G)1BM(G)2BM(G)4BM(G)8BM15BM30/31/32/620.89 - 3.7 4.4 - 7.4 3.7 - 14.8 17.7 - 29.5 7.00 - 55.318.4 - 110.636.9 - 442.5RB (Ω)RB (Ω)RB (Ω)RB (Ω)RB (Ω)RB (Ω)RB (Ω)RT (Ω)RT (Ω)RT (Ω)RT (Ω)RT (Ω)RT (Ω)RT ltage AC - The voltage shown is the nameplate AC brake voltage supplied to the brake rectifier.DC - The voltage shown is the effective DC voltage required by the brake coil. The measuredvoltage from the rectifier will be 10-20% lower than that shown.Brake Coil Resistance - values must be measured with the brake coil disconnected from the rectifier.RB - Accelerator coil resistance inΩ , measured from the red to the white brake coil wire.RT - Fractional coil resistance inΩ , measured from the white to the blue brake coil wire.ground connection are secure. In order to effectivelyprotect the motor from overloads, appropriate motorprotection must be provided. Fuses do not alwaysprovide adequate motor protection. For motorswhich are required to operate with a very high startstop frequency, the overload heater type motor protection is insufficient. It is advisable in such applications to provide the motor with temperature sensors(thermistors) in the windings. Monitor the thermistors by means of an external trip device. In this way,the motor will be fully protected against practicallyall possible overloads.When using motors outdoors or in washdown applications the cable entries into the terminal box mustbe directed downward to prevent water from entering the conduit box. The unused cable entries mustbe closed off properly.Lubrication and MaintenanceThe motor bearings are sealed and the grease content is adequate for the life of the bearing.Brake Connection (AC Voltage)SEW-Eurodrive motor brakes can be connected in anumber of different ways. In order to connect thebrake for each application, it is important to refer tothe data on the motor nameplate that describes thebrake system. The brake fields are: brake voltage,brake torque and brake control.This operating instruction covers AC brake voltageswith the following brake control components. If thebrake voltage is DC, or if the brake control componentsdiffer from those listed below, an additional operatinginstruction must be consulted for connection information.SEW-Eurodrive fail-safe mechanical brakes are DC controlled. Standardly, a brake rectifier (halfwave) is provided to convert the AC line voltage to the DC voltagerequired to drive the brake. 24VDC brakes do notinclude a rectifier. When voltage (VB) is applied to thebrake, it will release. When voltage (VB) is removedBrake Control (Rectifier)BG1.5BG3.0BGE1.5BGE3.0Part Number825 384 6825 386 2825 385 4825 387 0from the brake, it will set. The brake rectifier can bewired either for normal brake reaction time (setting,stopping) or fast brake reaction time. The fast brakereaction time will set the brake more quickly which willprovide a shorter and more repeatable stopping distance. There are two basic types of brake rectifiers, BGand BGE. The BG brake rectifier is standard on motorsizes DT71 - DT100. The BGE rectifier is standard onmotor sizes DV112 - DV225. The BGE rectifier can beordered with motor sizes DT71 - DT100 and will provide faster brake release times allowing the motor tocycle more frequently.
Operating InstructionsMotors and BrakemotorsType BM (G) Brakesdocument01 805 42 USsheet3 (7)dateB / 06.06.00terminal block, meaning that when power is applied tothe motor it will simultaneously release the brake andstart the motor. See Page 3 for this description.The wiring diagrams for brake connections are locatedon the inside of the motor conduit box lid. The brakewill release and allow the motor to rotate when thenameplate AC brake voltage VB is supplied to the brakerectifier terminals. There are certain cases where thebrake rectifier can receive its voltage from the motor’sBrake Voltage Supplied from the MotorThere are specific instances when the brake voltage canbe tapped from the motor’s terminal block. The advantage of brake systems wired in this way is when poweris applied to the motor, the brake releases (requiringno additional brake supply power wiring). The brakecan be wired to the motor terminal block under thefollowing conditions: a single speed motor; the motoris started and run across the line (i.e., no inverter orelectronic soft start). The connections shown on thispage are for normal brake reaction time. For rapidbrake reaction time, incorporate the contact as shownon the brake diagram located on the inside of themotor conduit box lid.Brake Motor ConnectionSingle Speed Dual Voltage- / - Connection Diagram DT72Example Motor Voltages:230 /460 Volts - 60 HzMotor wired for low voltage.Brake voltage matches lowmotor voltage.Example: 230/460V MotorMotor wired 230VBrake voltage 230VMotor wired for high voltage.Brake voltage matches lowmotor voltage.Example: 230/460V MotorMotor wired 460VBrake voltage 230VMotor wired for high voltage.Brake voltage matches highmotor voltage.Example: 230/460V MotorMotor wired 460VBrake voltage 460VMotor wired for low voltage.Brake voltage matches lowmotor voltage.Example: 230/460V MotorMotor wired 230VBrake voltage 230VMotor wired for high voltage.Brake voltage matches lowmotor voltage.Example: 230/460V MotorMotor wired 460VBrake voltage 230VMotor wired for high voltage.Brake voltage matches highmotor voltage.Example: 230/460V MotorMotor wired 460VBrake voltage 460VBrake Motor ConnectionSingle Speed Dual Voltage - YY/YConnection Diagram DT79Example Motor Voltages:230YY/460Y Volts - 60 Hz200YY/400Y Volts - 50 Hz
Operating InstructionsMotors and BrakemotorsType BM (G) Brakesdocument01 805 42 USsheet4 (7)dateB / 06.06.00Brake Motor ConnectionSingle Speed Dual Voltage - /YConnection Diagram DT13Examples Motor Voltages:200 /346Y Volts - 60 Hz330 /575Y Volts - 60 Hz220 /380Y Volts - 50 HzMotor wired for low voltage.Brake voltage matches lowmotor voltage.Example: 200/346V MotorMotor wired 200VBrake voltage 200VRe-Adjusting the Brake Air GapA properly adjusted brake air gap is critical for correctoperation. The following table indicates the requiredair gap measurement.Motor SizeDT71 - DT100DV112 - DV225DV180 - DV225Brake SizeAir GapBM(G)05 - BM(G)4 0.010”-0.024” (0.25-0.6 mm)BM(G)8 - BM31BM32 - BM62Double Disc0.012”-0.047” (0.3-1.2 mm)Motor wired for high voltage.Brake voltage matches lowmotor voltage.Example: 220/380V MotorMotor wired 380VBrake voltage 220VMotor wired for high voltage.Brake voltage matches highmotor voltage.Example: 220/380V MotorMotor wired 380VBrake voltage 380VMotor SizeBrake SizeDT71 - DT100BM05 - BM4Min. Disc (26) Thickness0.354” (9mm)DV112 - DV225BM8 - BM620.394” (10mm)If the brake disc (26) is worn below the measurementgiven, it must be replaced. If the thickness is greaterthan the specification above, the brake disc is stillusable and the brake can be re-adjusted.0.016”-0.047” (0.4-1.2 mm)Prolonged use of the brake will wear the brake disc lining. This wear increases the air gap. When the air gapapproaches its maximum value, the brake must be readjusted. To re-adjust the brake, follow the procedurebelow.The Hand Release MechanismMost of our brakes are supplied with a hand-operatedrelease lever. This allows opening of the brake withoutapplying power, allowing for adjustments on the drivenmachinery.There are two brake release mechanisms available:1. Remove the fan cover (14), fan snapring, fan (17),rubber seal (2), and any accessories at the fan end.2. Insert a feeler gauge between the brake coil body(21) and the stationary disc (22), tighten the adjusting nuts (19) until the minimum value for the airgap is reached equally around the brake. Withmotor size 160L and up (brakes BM30 to BM62) firstscrew the threaded bushings (24) into the endshield.After set-ting the air gap, lock the bushings (24)against the coil body.3. Ensure a play of 0.06” to 0.08” (1.5 to 2 mm) in thereleasing arm. See “THE HAND RELEASE MECHANISM.”Replacement of the Brake Disc (26)Extended operation of the brake may wear the brakedisc (26) beyond acceptable limits. The thickness of thebrake disc can be measured to determine if this hasoccurred.The “BMHR” (4) type requires a lever to be insertedinto the release arm. To open the brake, pull the leveraway from the motor. It will re-engage automatically,once the lever is released. The lever, when not used, isattached to the motor’s cooling fins with clamps.The screw-type “BMHF” (5) arrangement requires ahexagon key which, when turned clockwise, opens thebrake.Since the stationary disc (22) will move away from thecoil body during the brake’s operation, it is vital thatthere is free play (floating clearance) on the releasearm of 0.060”-0.080” (1.5-2.0 mm). The springs (11)should be placed between the arm (7) and the nuts (12)to eliminate noise.The brake release mechanism is not used to change thebrake’s torque setting. There must always be clearance on the lever.
Operating InstructionsMotors and BrakemotorsType BM (G) BrakesTroubleshootingFault: Motor does not run1. Check the motor and brake wiring for damageand proper connection.2. At the motor, measure the line voltage, line current and motor resistance of all three phases.3. If all three phases read a similar current value thefollowing conditions may exist: The motor may be blocked by either an excessiveexternal load, or problems in the reducer of thebrake. In both cases, the motor should drawlocked rotor (in-rush) current. Consult SEWEurodrive catalogs for these values. Release thebrake mechanically, reset the air gap if needed,or disconnect the load from the output shaft. If the brake is at fault electrically see #4 below. If the current differs significantly from the ratedlocked motor current, the motor is either anincorrect voltage, or it is jumped for the wrongvoltage.4. If the brake can be released mechanically, butdoes not respond to voltage, check the brake forelectrical problems. Make sure the wiring is according to the instructions. Pay special attention to the brake voltage. Energize the brake circuit and measure the ACvoltage on the rectifier terminals 2 and 3(BG/BGE rectifiers). The measured voltageshould correspond to the nameplate inscription:“Brake V.” Measure the DC voltage across terminals 3 and 5of the brake rectifier which should be about35% to 45% of the previously measured AC voltage. If there is no fault found to this point, measurethe resistance of the brake coils. Disconnect thecoil from the rectifier for this measurement. Seethe table on Page 2 for the brake coil resistancevalues. Measure the resistance of each brake coil lead tothe brake coil body. This test should show anopen circuit. If a short is found, the brake coil isdamaged.documentZU.TSE.01esheet5 (7)dateB / 08.04.97If the results of all these checks (electrical connection, mechanical checks and adjustments, and electrical tests) indicate that the brake should work, thenthe most likely cause of the brakeís failure to releaseis a damaged brake rectifier.Fault: Brake stopping time is too slowIf the brake has been operating well for some timeand a gradual increase in stopping time has occurred,the release arm may have come in contact with thecoil body. Verify that the brake release arm end playis correct, and check for excessive brake disc wear,(see previous instructions).If the brake has been in operation for some time,and the stopping has become erratic, dust accumulation around the stationary disc guides may be thecause. Remove the brakeís rubber sealing collar andclean with an air hose.If the application is new, check the brakeís wiringand air gap. If the brake is not wired for fastresponse, then changing the brake wiring to fastresponse will decrease the stopping time. Verticalmotion and indexing applications may also requirethe fast response connection. Increasing the brakeístorque may remedy the situation, but will alsoincrease stress on the transmission.On applications requiring excessive brake work, thelining’s surface may become glazed due to extremeheat. The application of a BGE rectifier will improvethis situation dramatically. BGE rectifiers are standard equipment on motors size DV112 - DV225, butoptional on the smaller sizes DT71 - DT100. ContactSEW-Eurodrive for more information
Operating InstructionsMotors and BrakemotorsType BM (G) BrakesBM(G) Brake Cross Section and Exploded ViewsBM(G) 05 - BM 15(1) Brake end shield(2) Rubber sealing collar(3) Braking springs(4) Hand release lever(5) Releasing screw(6) Closing plate(7) Release arm(9) Sealing ring(10) V-ring(11) Conical spring(12) Release(13) Stud(14) Fanguard(15) GrommetBM 27)(29)BM 32/62Dowel pinFanN/ABrake adjustment nutRetaining studBrake coil bodyStationary discPressure ringSetting sleeveDual brake pad stationary discBrake disc completeCarrierCup SpringExploded view of the BM and BMG single-disk brake (motor sizes 71-160M)BM05 - BM15 and BMG05 - BMG8Exploded view of the BM single-disk and double-disk brake (motor sizes 160L-225)BM30 - BM62documentZU.TSE.01esheet6 (7)dateB / 08.04.97
Operating InstructionsMotors and BrakemotorsType BM (G) BrakesPROBLEMAssure correct supply voltage.Increase air flow:a. Continuous running auxiliary fan.b. Ensure unobstructed air flow.Ambient temperature is too high.Ensure cool air gets to the motor. Ductingmay be required.Overload at rated voltage. Unit will drawcurrent in excess of nameplate rating and runbelow rated speed.Select a larger unit.The problem may or may not be solvedwith a larger motor. Contact SEWEurodrive.Repair supply lines.Replace fuses.Determine and correct cause of failureand replace fuse.Reset protective device. Identify and correct cause for device activation.Motor protection device faulty or will notreset.Check protection device for faults.Motor not connected for proper voltage.Check connection diagram in conduit boxcover and correct the wiring.Large voltage and/or frequency fluctuation atstarting.Ensure stable power supply.Insufficient torque in Star Connection.Start motor directly in Delta Connection ifpossible. Otherwise use a larger motor.Faulty contact in Star/Delta starter.Faulty or defective winding.Rotor dragging.Correct fault condition.Have motor repaired by qualified serviceshop.Short circuit in power supply conductors or inthe motor.Correct the fault condition.Motor has ground fault or winding towinding short circuit.Have motor repaired by qualified serviceshop.Check connection diagram in conduit boxcover and correct the wiring.Motor improperly connected.Motor runs in wrong direction.B / 08.04.97Insufficient cooling air volume due to:a. Low frequency operation on variable frequency drive.b. Obstructed air flow.Motor protection device activated.Fuses blow or motor overcurrentprotection trips immediately.dateCheck connection diagram on conduit boxcover and correct the wiring.Blown fuse.For reduced voltage starting,motor will not start in StarConnection but will start inDelta Connection.Motor hums and draws highcurrent.7 (7)Motor not connected for proper supplyvoltageSingle phasing due to break or loose connection in supply line or blown fuse.Motor will not start or startssluggishly.sheetREMEDYMotor’s allowable duty cycle is exceeded (toomany starts per hour required).Motor does not run.ZU.TSE.01eCAUSESupply voltage varies outside the allowabletolerance causing an undervoltage or overvoltage condition.Motor Overheats(Check temperature withinstrumentation)documentMotor supply leads misconnected.Switch two supply leads.Note: If after proceeding through the Troubleshooting Chart the motor is found to be defective, contact your nearestSEW-Eurodrive Assembly Plant for warranty assistance or replacement parts.SOUTHEAST MANUFACTURING& ASSEMBLY CENTER1295 Spartanburg Highway/Lyman SC 29365(864) 439-7537 Fax: (864) 439-7830SOUTHWEST ASSEMBLY CENTER3950 Platinum Way/Dallas TX 75237(214) 330-4824 Fax: (214) 330-4724MIDWEST ASSEMBLY CENTER2001 West Main Street/Troy OH 45373(937) 335-0036 Fax: (937) 222-4104EAST COAST ASSEMBLY CENTER200 High Hill Road/Bridgeport NJ 08014(609) 467-2277 Fax: (609) 845-3179WEST COAST ASSEMBLY CENTER30599 San Antonio Road/Hayward CA 94544(510) 487-3560 Fax: (510) 487-6381
Jun 06, 2000 · Brake Connection (AC Voltage) SEW-Eurodrive motor brakes can be connected in a number of different ways. In order to connect the brake for each application, it is important to refer to the data on the motor nameplate that describes the brake system. The brake fields are: brake voltage, . Brake Motor ConnectionFile Size: 232KB
SEW-EURODRIVE—Driving the world SEW-EURODRIVE Driving the world www.sew-eurodrive.com SEW-EURODRIVE GmbH & Co KG P.O. Box 3023 D-76642 Bruchsal/Germany Phone 49 7251 75-0 Fax 49 7251 75-1970 sew
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Motor Brake Input Power SEW-EURODRIVE—Driving the world. Product Training 10 Brake Operation Motor Brake Step 1 Rectifier Input Power SSeptep 2 – 1200sms SEW-EURODRIVE—Driving the world. Product Training 11 Brake Operation Starting 1. The rectifier energizes the brake coil. 2. The brake
12. Sew together (1) Block One square, (1) Block Five rectangle, (1) Block One square, (1) Block Six rectangle and (1) Block One square, in that order from left to right. Sew the newly sewn strip to the top of the Center Block. D D DD Unit 1 Block One make 6 3. Sew (1) 1" x 8 ½" Fabric D strip to each side of (1) Unit 1 square. Sew (1) 1 .
Balancing involves redistributing the mass which may be carried out by addition or removal of mass from various machine members Balancing of rotating masses can be of 1. Balancing of a single rotating mass by a single mass rotating in the same plane. 2. Balancing of a single rotating mass by two masses rotating in different planes. 3.
3 Principle of SEW Brakes SEW brake systems in detail 10 Drive Engineering – Practical Implementation – SEW Disk Brakes 3.3.2 BR03 brake The BR03 brake is used for size DR63 AC brakemotors. According to the BR principle, the brake
Transfer dart markings from the pattern to the fabric. Sew darts, making sure to backstitch at each dart point. Sew bag body: With right sides together, ling up raw edges and bottom darts of the bag exterior. Sew around the sides and bottom of the bag. Repeat for lining, but leave a 4”-5” opening at the b
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