"user manual"
Contents
1. Part Number Part Description Qty per Assembly Part Number Part Description Qty per Assembly 6 Input Pinion 1 921 Gasket 1 900 Rotor Assembly 1 923 Screw 4 902 A Endbell 1 929 Bearing 1 902 1 Screw 4 932 B Endbell 1 902 2 Dubo Seal 4 932 1 Screw 4 904 Oil Seal 1 933 Oil Seal 1 905 Bearing 1 939 Fan 1 906 Preload Spring 1 940 Fan Cover 1 907 Terminal Box Frame 1 940 1 Screw 4 907 1 Screw 4 947 Retaining Ring 1 908 Terminal Box Cover 1 948 Retaining Ring 1 908 1 Screw 4 952 Fan Clip 1 909 Gasket Terminal Box Frame 1 960 NPT Thread Adapter 1 910 Gasket Terminal Box Cover 1 961 Plug includes O ring 1 916 Stator 1 TBLK Terminal Block 1 918 Key 1 TBLK 1 Screw Terminal Block Mounting 2 919 Retaining Ring 1 Jumper Bar not illustrated AR 920 Oil Plug 1 NORD Gear Limited NORD Gear Corporation Toll Free in Canada 800 668 4378 Toll Free in the United States 888 314 6673 06 13 12 www nord com docs DRIVESYSTEMS 19 Repair Reference the parts list drawing on page 14 for clarification A Disassemble the motor according to the general exploded view in PARTS INFORMATION Disassemble only as far as necessary to replace the failed parts B Whenever the motor is disassembled clean all dust and contamination from the motor interior using a vacuum cleaner and a soft bristled nylon brush C The following parts must be replaced if they are removed Oil seal 904 Oil seal 92. OT2 T3 A A 12 13 w Customer Supplied Ji low voltage L1 L2 L3 Starter Contacts NORD Gear Limited NORD Gear Corporation Toll Free in Canada 800 668 4378 Toll Free in the United States 888 314 6673 06 13 12 www nord com docs p MOTORS AC INDUCTION 4 SINGLE amp POLYPHASE LO RETAIN FOR FUTURE USE U30000 10 of 17 DRIVESYSTEMS 15 Wiring Diagrams Ctd HE PERNT 5 P1 SWITCH TEMP AT 2 50 VAC P2 2 155 2 6 500 VAC RESPONSE TIME WORKING RANGE 70 lt 5 SECONDS __ _ AUTOMATIC RESET AT CONTROL DEVICE 30 15 C TEMP DROP THERMISTOR 8 THERMISTATS 8 TF OPTION TW OPTION 5 OPTION 1 OPTION F 3 PH 380 575V 1 PHASE 50 60 Hz 115V 50 60 Hz Hz A 220 332V 50 60 Hz CAPACITOR IS SUPPLIED CAPACITOR IS SUPPLIED BLOWER COOLING FAN BLOWER COOLING FAN OPTION 5 F OPTION TERMINAL FROM MOTOR BLOCK 1 2 H2 BIS xz TO se SPACE HEATER 8 SH OPTION NORD Gear Limited NORD Gear Corporation Toll Free in Canada 800 668 4378 Toll Free in the United States 888 314 6673 06 13 12 www nord com docs MOTORS AC INDUCTION SINGLE amp POLYPHASE ee RETAIN FOR FUTURE USE U30000 11 of 17 DRIVESYSTEMS 16 Motor
3. DRIVESYSTEMS U30000 8 of 17 14 Electrical Connections UN WARNING og To avoid electrocution injury or death make certain all electrical devices motors brakes variable frequency drives etc are properly grounded completely de en Tighten the terminal board screw connections on the on the main terminal board per the table below Table 4 Tightening Torque Terminal Board and Grounding Screws ergized and brought to a no voltage condition prior to Thread Size Nut Size Tightening Torque working on any electrical connections Remember that most of these devices potentially dangerous energy levels mm lb ft N m for a period of time after power is removed Always fol M4 7 0 6 0 9 0 8 1 2 low proper lock out tag out procedures M5 8 1 3 1 8 1 825 M6 10 2 0 3 0 2 7 4 IMPORTANT NOTE M8 13 4 0 5 9 5 5 8 M10 17 6 6 9 6 9 13 External motor brakes have their own connection require M12 19 11 8 14 8 16 20 ments as indicated in the appropriate brake instruction manuals e Upon final assembly the terminal box cover must be sealed so that it is dust tight and water tight A WARNING A If the motor has an integral brake make certain there is no load connected to the driven equipment before releas Table 5 Tightening Torque Terminal Box Cover Screws 2 injury death or damage Thread Size Tightening Torqu
4. PHO 5 nema bur O D as or FR Hz Hz ENCL DP CODE Al lt 9 0 PrO rpm wm coo Q V V SF SF A SF SF 0 A 025 vwc voc lj nord com X uwor N W 6 8 191510 18 112560 wns Type SK 6 No 5 NEMA DUTY 3 ame oP nO EFO FO R Hz Hz CODE ew 0 9 o Oro PFO rpm CODE CODE Q V SF Iss az O Brake x vd voc J 9 TO SS nord com N NOR tie 3 Tye O 3 K O mot wr No mh IEC 60034 60034 a 4 Ow 4 kw imin O O cose 57 nin 7 Hz 9 C m Q mac V XS www nord com Table 1 Nameplate Data Field Definition Field Definition Model Type Power Factor Number of Phases Motor Frame Size Order
5. DRIVESYSTEMS 1 Overview This user manual applies to NORD Motor products and it pro vides general information for motor operation installation maintenance inspection repair and trouble shooting which is relevant to most of the motor products shipped by NORD Information and instructions provided in this manual safety and commissioning information and all other manuals appli cable to any items supplied by NORD must be observed This instruction manual is not intended to include compre hensive details and information related to all possible design variations or accessories options available with NORD motors If there is any uncertainty about specific procedures instruc tions or motor details then please refer these questions to NORD for additional information or clarification Before installing operating or performing maintenance on any electrical motor become familiar with the following e The detailed operating instructions and wiring diagrams All applicable national local and system specific regulations codes and practices The national regional regulations governing safety accident prevention The proper use of any tools transportation or hoisting equipment and safety equipment needed to complete the installation To avoid serious injury or possible damage to the equipment or machine compliance with all safety and information notes is mandatory UN WARNING AN All work invol
6. 415V 230V 400V 10 6 e Per EN 60034 1 a 5 voltage variation and a 2 frequency variation can be tolerated Current Service Voltages e The allowed variations are based upon the voltage or voltage range indicated on the motor nameplate NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs DRIVESYSTEMS 5 Motor Nameplate Information MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE gt 930000 2 of 17 The motor nameplate and the display of technical information may vary slightly depending upon the global standard s that the motor conforms to and the efficiency level Please reference the examples below www nord vA 8 191510 1 112560 CE WS 87 0 K Q No 5 Mot
7. Nm with a locking hand release lever and a current sensing relay and dust amp corrosion protection NORD Gear Limited NORD Gear Corporation Toll Free in Canada 800 668 4378 Toll Free in the United States 888 314 6673 06 13 12 www nord com docs DRIVESYSTEMS 7 Application Conditions Standard NORD motors are designed to operate in dusty or moist environments and have anti fungal thermal class F in sulation e Enclosure Protection Rating IP55 minimum Maximum Installation Height 3300 ft 1000 e Ambient Temperature 4 to 104 F 20 to 40 C e Tropical proof Thermal Class F insulation The protection level and maximum ambient temperature are stated on the motor nameplate IMPORTANT NOTE NORD can provide motors for an expanded range of appli cations and service conditions including higher protection levels extreme ambient conditions and higher altitudes AN WARNING Consult NORD for recommendations if motors ated under extreme loading conditions exposed to high inertia loads or need to operate under unusually high cycling conditions with high starting and stopping fre quency A WARNING A Special design and assembly considerations are needed if NORD motors are subject to any of the following condi tions e Outdoor installation with motor vertical position Direct contact with aggressive or corrosive materials acids bas
8. WIRING DIAGRAM WIRING DIAGRAM 3 PHASE MOTOR 3 PHASE MOTOR 3 PHASE MOTOR high voltage L2 high voltage 2 13 14 J u1T1 v1 W1 Jaja L3 T1 U1 T3 W1 On On 275 v5 T8 8 V3 CHD 5 V2 0274 CHD 517 T7 U3 CUED T4 U2 W276 CHD ws T9 9 W3 CED 6 W2 High Voltage low voltage 12 low voltage L2 13 UITI 2 T1 U1 72101 w1 7 QT 2 5 5 8 8 V3 O 5 V2 5 7 T7 U3 T4 U2 11 12 13 2 6 5 9 T9 W3 T6 W2 A A Low Voltage JUMPER WIRES NEEDED 460 800V 60Hz 30 230 400V 50Hz 30 208 360V 60Hz 30 400 690V 50Hz 30 2 SPEED MOTORS 2 SPEED MOTORS 332 575 60Hz 30 SINGLE WINDING 4 2 amp 8 4 POLE DUAL WINDING 8 2 POLE 120095270 120094400 120095310 12 13 L1 12 13 WIRING DIAGRAM Lok 1 3 PHASE MOTOR W D HIGH SPEED HIGH SPEED T1 10 2 1V 1W T6 oT 5 0 0 0 w2 V2 ee W ee 2 vi wi C ee n O5 Ox Ow 4 5 6 high voltage 11 L2 L3 LOW SPEED LOW SPEED 75 w2 u2 v2 1 10 2 1V 1W m L HH 1 2 SPEED MOTORS SINGLE WINDING 2 SPEED MOTORS DUAL WINDING
9. a volt ohmmeter verify that the motor power supply is in the correct range Run the motor with no load As the motor is operating listen for unusual motor noise and check for excessive vibration Vibration and motor noise are indications of bearing contamination lack of lubrication damage or failure D Use an ammeter to measure the no load current Record the no load current for comparison with previous readings and for reference during future testing E If the motor passes the no load test operate the motor at rated load and check and record the current F Check the motor operating temperature at rated load If the motor operates at a higher than normal temperature the motor may be damaged overloaded or failing NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs DRIVESYSTEMS 23 Troubleshooting MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE gt 930000 17 of 17 Fault Likely Cause Corrective Action Motor fails to start Motor is mis wired Brake is may not be releasing Fan guard damaged and contacting fan Motor protection device has tripped or does not switch e 1 Ph Capacitor or start switch has failed Verify and correct motor wiring Troubleshoot brake per User Manual U35000 Replace damaged fan guard Check motor protection device for correct setting and correct error Discharge capa
10. motors NEMA C face motors and IEC flange mount ed motors must be rigidly secured to their mating connection surface using all fastening screws tightened to the proper bolt torque It is good practice to apply a medium strength thread locking agent Loctite 242 to the mounting screws Foot mounted motors must be securely installed to a rigid and level foundation or mounting surface to minimize vibra tion and maintain alignment between the motor and shaft load All mounting hole locations must be utilized Tighten all hold down screws or bolts to the proper bolt torque HARMFUL SITUATION Failure to provide a proper mounting surface may cause vibration misalignment and bearing damage Accurate alignment and proper balancing of output devices couplings belts pulleys etc is required to assure quite low vibration trouble free operation When the motor is directly coupled to a gear drive or a driven machine make sure that the motor shaft and driven machine shaft are aligned with one another axially HARMFUL SITUATION Inaccurate alignment may lead to bearing damage exces sive vibrations and shaft breakage For motor replacement guidelines see section 20 on page 15 and section 21 on page 16 IMPORTANT NOTE NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE gt
11. turns freely Motor space heaters when provided are to be connected and energized whenever there is a possibility that the storage ambient conditions will reach the dew point Space heaters are optional Remove motor from the storage container when the heater is energized e If the motor needs to be stored for extended periods if it is stored in less than favorable conditions it is recommend that the winding insulation resistance be checked prior to commissioning page 7 e Even if stored in favorable conditions the antifriction motor bearings and motor shaft seals may need to be replaced if the storage period is more than 4 years NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE 930000 5 of 17 10 Safety Considerations When installing servicing or replacing electric motors it is im portant to be working in a voltage free state Observe the following safety rules Five Safety Rules 1 Disconnect the system Disconnect the auxiliary circuits brakes space heaters etc 2 Prevent reconnection follow safe lock out tag out practices 3 Make sure that the equipment is at zero voltage 4 Make certain the equipment is properly grounded and short circuited 5 Cover or isolate nearby components that are still electrically live To energize the system apply the measures in reverse order Qualifi
12. 33 Gasket 909 Gasket 910 Gasket 921 Gasket on plug 961 Self locking screws 907 1 908 1 923 932 1 940 1 Dubo Seals 902 2 D If the following parts are removed inspect them and replace them if they are deformed or damaged Retaining ring 919 Retaining ring 947 Retaining ring 948 Fan clip 952 20 Removing and Replacing Integral Motors Reference the parts list on Page 14 for clarification A Disconnect the power to the electric motor Make certain the motor is properly grounded de energized and secured with a lock out tag out device B Drain the oil from the mating gearbox or rotate the motor gearbox assembly so that the motor is up to prevent oil from spilling from the gearbox when the motor is removed C Support the motor and prepare it for removal Steady the motor and support it For larger motors use of mechani cal lifting or support devices to may be appropriate D Remove the fastening screws that hold the motor to the reducer input IMPORTANT NOTE Most integral motor installations have mounting bolts accessible from the motor exterior If the bolts are not clearly visible unbolt the input flange from the gearbox Remove the bolts securing the motor to the reducer input flange and discard the old DUBO sealing rings that were under the screw heads E Maintain motor shaft alignment and move the motor directly away from its mounting surface until t
13. 4 75 380 500 0 18 96 160 225 380 575 0 28 165 380 500 0 29 155 Option 115 50 60 2 1ph 60Hz Ratings 50Hz Ratings Motor Frame Voltage Current Power Voltage Current Power w v A w Single Phase Connection Delta 63 100 135 0 23 42 100 135 0 30 42 71 100 135 0 23 47 100 135 0 30 44 80 100 135 0 27 57 100 135 0 30 43 90 100 135 0 46 102 100 135 0 57 78 100 100 135 0 53 105 100 135 0 54 78 112 100 135 0 60 115 100 135 0 55 80 Table 6 Option F amp FC NORD Gear Limited NORD Gear Corporation Toll Free in Canada 800 668 4378 Toll Free in the United States 888 314 6673 06 13 12 www nord com docs DRIVESYSTEMS 16 Motor Accessories Ctd Thermostats Option TW and Option 2TW MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE 930000 12 of 17 Standard connection Series connected one per phase Contact NC Normally Closed Auto Re setting Shuler Device Option TW Response Temperature 311 F 155 C Shut Off Device Option 2TW 266 F 130 C Alarm Device Nominal Current 1 6 Amp at 250 V Resistance lt 50 Switch Rebound lt Ims Insulation Rating 2000 VAC Cycles 10 000 max Lead Identification P1 and P2 or 1 and 2 2 1 2 2 inside terminal box Motor thermostats
14. Accessories Blower Cooling Fan Option F amp FC e Connection Diagram Shown on page 10 e Option FC is 1 115V e Option has capability of 1 phase by connecting a supplied capacitor Option 3ph amp 1ph 220 575V 50 60Hz 60Hz Ratings 50Hz Ratings Motor Frame Voltage Current Power Voltage Current Power w v A w Single phase connection Delta 63 230 277 0 11 38 230 277 0 10 27 71 230 277 0 12 41 230 277 0 10 28 80 230 277 0 13 44 230 277 0 11 29 90 230 277 0 25 88 230 277 0 26 72 100 230 277 0 28 88 230 277 0 26 70 112 230 277 0 31 107 230 277 0 26 73 132 230 277 0 27 89 230 277 0 29 82 160 225 230 277 0 41 140 230 277 0 45 128 Three phase low voltage connection Delta 63 220 332 0 08 23 220 290 0 10 27 71 220 332 0 08 24 220 290 0 10 30 80 220 332 0 08 25 220 290 0 01 29 90 220 332 0 21 64 220 290 0 28 86 100 220 332 0 21 66 220 290 0 27 86 112 220 332 0 23 70 220 290 0 27 85 132 220 332 0 25 74 220 290 0 32 96 160 225 220 322 0 49 165 220 290 0 52 155 Three phase high voltage connection 63 380 575 0 04 23 380 500 0 05 29 71 380 575 0 04 25 380 500 0 05 30 80 380 575 0 04 26 380 500 0 05 29 90 380 575 0 12 62 380 500 0 16 82 100 380 575 0 12 66 380 500 0 16 83 112 380 575 0 13 70 380 500 0 16 82 132 380 575 0 1
15. Motor fails to start Motor runs the incorrect direction e Incorrect wiring Rewire motor according to system schematic and or switch two incoming motor phases Motor heats up excessively or thermal overload protection trips Overload Ambient temperature is too high Inadequate cooling Operation is outside the allowed duty cycle Motor protection device may be defective Excessive supply voltage System short or damaged stator Make sure load is free Verify motor amp draw compared to nameplate rating Reduce load or consider a larger motor Do not operate above the rated conditions Correct cooling air supply Open and clear cooling air passages Retrofit with forced ventilator fan if needed Adjust operating duty cycle or contact a specialist to select a suitable motor or drive Replace motor protection device Adapt motor supply voltage Check for loose cut or damaged wires Check stator winding for defects or burn damage Excessive Noise or Vibration e Motor bearings contaminated or damaged Excessive motor shaft end play Misaligned or imbalanced load Test motor by itself If bearings are bad noise may be heard or roughness detected Replace bearings Add lubrication if bearings have grease fittings Check shaft endplay with motor and system power disconnected If shaft movement is excessive replace motor shaft bearings Check all mating shaft connections for proper alignment and
16. Number Full Load Speed rpm 1 min Serial Number Efficiency Insulation Class NEMA Code Letter IP Ingress Protection Enclosure Rating Service Factor Duty Cycle Current Rating If Service Factor gt 1 15 Ambient Temperature Rating C Operating Voltage Rage A Enclosure Type Current Rating at Operating Voltage Range A Motor Frequency Hz Service Factor at Operating Voltage Range A Voltage Rating V Brake Rating Nm Current Rating A Brake Supply Voltage VAC Rated Power HP or kW Brake Coil Voltage VDC NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE U30000 3 of 17 DRIVESYSTEMS 6 Motor Options And Nomenclature NORD offers many options for its motors The option code will be shown in the motor nomenclature Below are commonly used options Code Description Code Description AICM Additional Internal Insulation Coating Applied OL Motor Without Fan With Cover BRE With Brake OL H TENV Motor Without Fan amp Cover EAR Single Phase Start Cap Run Cap P Premium Efficient Motors ECR S
17. ain electrically live parts Fatal or severe injuries and substantial material damage can occur if the required covers are removed or if the machines are not handled operated or maintained properly Before start up check the following e All electrical connections are secure well grounded and properly made e The motor is rotating in the correct direction when de coupled from the driven load There are temperature sensitive parts cables etc in contact with motor enclosure e Condensation drain holes are always located at the lowest point of the motor AN WARNING A Rotating Parts Electrical machines contain dangerous rotating parts Fatal or severe injuries and substantial material damage can oc cur if the required covers are removed or if the machines are not handled operated or maintained properly UN WARNING Hot Surfaces Electrical machines have hot surfaces Fatal or severe in juries and substantial material damage can occur if the required covers are removed or if the machines are not handled operated or maintained properly Allow the ma chine to cool down before starting any work on it NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs DRIVESYSTEMS 11 Checking the Insulation Before putting the motor into operation for the first time afte
18. citor and use a volt ohm meter to check the capacitor for an open circuit replace if needed Inspect switch and connections Replace if contacts look burned or pitted Fuses blow or motor protection faults immediately Short circuit in line Lines connected incorrectly Fuse or circuit breaker tripped Motor is overloaded or equipment jammed Stator is shorted or went to ground Rectify short circuit Check circuit diagram and make corrections Replace fuse or circuit breaker Make sure load is free Verify motor amp draw compared to nameplate rating A damaged or blown stator will show a burn mark Stator must be repaired or replaced Motor hums and has high current consumption Brake may not be releasing Rotor may be rubbing stator Defective or incorrect stator winding Troubleshoot brake per User Manual U35000 Send motor to a repair specialist Severe speed loss under load or excessive acceleration time Overload Excessive voltage drop Damaged or failing motor bearings Damaged or worn gear unit 1 Ph Capacitor or start switch has failed Check load conditions and make certain system is unobstructed Reduce load or consider a larger motor Verify service voltage is within specification Check if nearby equipment is affecting incoming power Make sure connection harness and wiring is adequate Replace motor bearings Replace or repair damaged gear unit See instructions under
19. correct all imbalanced load conditions 1 Ph Start Capacitor Failures e Motor is not coming up to speed quickly enough Motor is being cycled frequently Start switch is defective or damaged Verify motor size to load conditions Motor should come up to speed in no more than 2 3 seconds Verify duty cycle and consult specialist for recommendations Replace start switch 1 Ph Run Capacitor Failures Possible power surge to motor caused by transient voltage or lightening Excessive ambient temperature Install proper surge protection Verify ambient conditions do not exceed nameplate value NORD Gear Limited Toll Free in Canada 800 668 4378 NORD Gear Corporation Toll Free in the United States 888 314 6673 06 13 12 www nord com docs
20. ctions Check that all electrical connections are secure If the electrical connections are not secure tighten them Check the electrical connections for evidence of arcing Loose electrical connections can cause arcing which is evident by discoloration and charring If you find evidence of arcing replace the damaged connections Insulation Using an ohmmeter check and record the resistance of Compare the current resistance reading to Resistance motor winding insulation previous readings If the resistance drops significantly perform an internal inspection for insulation damage or deterioration Motor On motors that have a brake use a feeler gauge to check the If the air gap exceeds the maximum allowed for Brake air gap in between the brake pad and the rotor according to that brake configuration provided in the manual the appropriate user manual adjust the air gap or replace the brake pad according to user manual U35000 NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs MOTORS AC INDUCTION SINGLE amp POLYPHASE ee RETAIN FOR FUTURE USE U30000 14 of 17 DRIVESYSTEMS 18 Parts List If you are ordering a part provide the model and order number table 1 page 2 of your motor This will determine the specific part number you need 932 1
21. different types of oil M Re establish the electrical connection to the motor N Observe the subsequent start up closely to make certain the equipment is operating properly and there are no seal or gasket leaks NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs DRIVESYSTEMS 21 Removing and Replacing NEMA C Face or IEC Fange Mounted Motors For further clarification of these instructions reference the parts list on Page 14 of this manual A Disconnect the power to the electric motor Make certain the motor is properly grounded de energized and secured with a lock out tag out device B Support the motor and prepare it for removal Steady the motor and support it For larger motors use of mechani cal lifting or support devices to may be appropriate Remove the fastening screws that hold the motor to the C face or IEC mounting flange D Maintain motor shaft alignment and move the motor directly away from its mounting surface until the motor shaft and mating coupling clear the mounting flange surface of the driven equipment E Measure and record the proper placement of the motor shaft coupling prior to removing it from the old motor Make sure the new motor shaft key and key slot are free of all nicks burrs and lubrication or grease G Install the new shaft key on the new motor If the shaft key is not captured or if an open ended key slot is utilized it
22. e lb ft N m The supply voltage and frequency must agree with the 0 6 0 9 0 8 1 2 motor nameplate data M5 0 9 1 3 1 2 1 8 Always feed the connecting leads into the terminal box M6 1 1 1 8 1 5 2 5 using appropriate mating cable glands The mating 8 2 2 3 7 3 0 5 0 connection cables and cable glands should be suitable for temperatures gt 194 F 90 C Provide the ends of the connecting leads and ground lead with cable lugs or curved ring eyelets before connect ing them to the terminal board Make certain that the wiring connections and arrange ment of the terminal board jumpers conform to the appropriate wiring diagram as provided in the motor terminal box and or page 9 of this manual NORD Gear Limited NORD Gear Corporation Toll Free in Canada 800 668 4378 Toll Free in the United States 888 314 6673 06 13 12 www nord com docs MOTORS AC INDUCTION SINGLE amp POLYPHASE ee RETAIN FOR FUTURE USE U30000 9 of 17 DRIVESYSTEMS 15 Wiring Diagrams Frames 63 132 Frames 160 Frames 160 230 460V 60Hz 30 200 400V 50Hz 30 230 460V 60Hz 30 200 400V 50Hz 30 230 460V 60Hz 30 200 400V 50Hz 30 190 380V 60Hz 30 190 380V 60 2 30 190 380V 60Hz 30 120094410 120095260 120095500 REV WIRING DIAGRAM
23. ed Personnel All work involved in the transport connection commission ing and maintenance of any NORD product must be carried out by qualified and responsible technicians For the purpose of this documentation a qualified personnel is taken to mean a person or people who fulfill the following requirements e Through appropriate training and experience they able to recognize and avoid risks and potential dangers in their particular field of activity e They have been instructed to carry out work on the machine by the appropriate person responsible e They are responsible for knowing and complying with all applicable national regional and local work regulations and safety requirements NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs DRIVESYSTEMS 10 Safety Considerations Ctd General Warnings and Cautions MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE U30000 6 of 17 AN WARNING 2 WARNING To avoid electrocution injury or death make certain all electrical devices motors brakes variable frequency drives etc are properly grounded completely de en ergized and brought to a no voltage condition prior to working on any electrical connections Remember that most of these devices carry potentially dangerous energy levels for a period of time after power is removed Always follow proper lock out tag out p
24. einstalled Finding a condition that will require future repair before the motor is reinstalled decreases the overall maintenance time This section provides general test information and functional checks for the types of motors covered by this manual Read and understand the tests and checks before performing them on your motor Record and date all measurements taken If the motor fails any of the test procedures provided below use the troubleshooting guide to determine the motor problem Static Testing A The motor can only be static tested if it is disconnected from the component it drives and securely mounted on a fixture or mounting plate These tests are usually con ducted when a motor has been removed for any reason other than failure B Turn the motor shaft slowly by hand Feel and listen for evidence of a failed bearing which is indicated by a rough feel as the shaft rotates and by noise Check for smooth rotation with no evidence of binding or catching If the shaft does not rotate smoothly or binds or catches the bearings are worn or failing lack lubrica tion or are contaminated D Check the motor shaft for side play by applying pressure at right angles to the shaft in several places around the circumference If the shaft moves perceptibly the front bearing may be worn Dynamic Testing A Find the motor voltage and rated load current values as listed on the motor nameplate Using
25. es salts certain gases etc Exposure to extreme high low temperatures high relative humidity condensation moisture or very wet environments e Subject to extreme material build up on the unit dirt dust sand etc e Hazardous Locations risk of fire or explosion NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 MOTORS AC INDUCTION SINGLE amp POLYPHASE ee RETAIN FOR FUTURE USE U30000 4 of 17 8 Transportation During transportation observe the following Make sure that all eyebolts and lifting lugs are tight and firmly against their supporting surface Use all the lifting eyes that are intentionally supplied with the motor Lift only at designed points Protect the mounting surface from possible damage during transportation Always use sufficiently rated handling equipment lift mechanisms and lifting straps With heavier objects or unbalanced loads it may be ap propriate to use more than one lifting point or an additional strap or sling to assure safe transportation of the assembly This is especially true of assembled gearmotors and motorized reducers Once the NORD motor or assembly is properly installed remove the transportation fixtures completely or make certain they are properly re secured and tightened UN WARNING Transportation Use of Lifting Devices To avoid death serious injury or equipment damage Hoisting lugs or l
26. he motor shaft and mating input gear clear both the internal gear mesh and reducer input NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE U30000 15 of 17 Remove and discard the old flange gasket G Clean the gasket faces on the motor and gearbox making sure no cleaning debris enters the gearbox H Check the replacement motor to make sure the motor flange motor shaft and motor pinion are identical to the motor that was removed Place a new gasket between the gearbox and new motor Position the motor on the gearbox making sure the input pinion meshes with the input gear Rotate the motor as necessary to align the bolt holes and seat the motor flange Make sure the gasket remains properly aligned and seated K Apply a medium strength thread locking compound to the bolt threads Install the bolts and tighten them to the appropriate torque IMPORTANT NOTE If the motor gearbox installation uses an input flange first mount the input flange to the motor using the four mounting bolts and NEW DUBO sealing rings under the head of each fastening screw Make sure the fastening screws are clean and apply new thread sealant if necessary L Check the gearbox oil level in accordance with the appro priate User Manual s If necessary fill or add oil to the gearbox HARMFUL SITUATION Do not mix
27. hey have no fan Often TENV designs are labeled for intermittent or periodic duty or at a lower power rating than is typical for the given motor frame size Totally enclosed blower cooled TEBC The TEBC design uses separate blower or ventilator fan with its own low wattage motor and a separate power supply to provide continuous airflow and cooling The blower can be used to extend the speed range of the motor and allow ex treme slow speed operation without causing a concern for overheating Blower data is provided in Table 6 page 11 4 Voltage and Frequency Variation Voltage and frequency variations are based upon the assump tion that the nameplate horsepower will not be exceeded and that the motor temperature may increase Standard allow able deviations are based upon the type of motor labeling NEMA and CSA Labeled Motors Variations are based upon the nominal utilization voltage and not the service supply voltage as per ANSI C84 1 Service Voltages Utilization Voltages 120V 208V 240V 480V 600V 115V 200V 230V 460 575V e Voltage variation at rated frequency 10 e variations at rated voltage 5 e Combined voltage frequency variation 5 CE Labeled Motors Per IEC 60038 allowable service voltage variations on in the current system compared to the previous system are as in dicated Previous Service Voltages 220V 380V 660V 230V 400V 690V 6 10 240V
28. ifting eyes attached to the motor are designed for the weight of the motor only Do not attach any additional loads e The motor must only be transported and lifted using the lifting eyes in a position that is appropriate for its type of construction Otherwise it could fall over or slip in the lifting tackle e During suspended transport two straps must be able to carry the entire load weight safely e When required use additional suitable means of support for transportation installation or removal e Always secure the support equipment to prevent it from slipping NORD Gear Corporation Toll Free in the United States 888 314 6673 www nord com docs DRIVESYSTEMS 9 Storage If the motor is not in service store it according to the follow ing conditions e Store the motor clean dry dirt free vibration free area Storage temperatures of 10 C 50 F to 50 120 F must be maintained e Relative humidity must not exceed 60 e If vibration in the area exceeds 0 002 inch 0 05 mm at 60 hertz then vibration isolation pads are suggested to prevent brinelling of the bearings e Treat the unprotected shaft end and mating flange surfaces with a corrosion inhibitor that can be cleaned off prior to commissioning Before placing the motor into service visually inspect the motor exterior for evidence of deterioration during storage Turn the motor shaft by hand to make sure the shaft
29. ingle Phase Start Cap Run Cap Increased SF RD Canopy Cover EHB Single Phase Run Capacitor Only RDD Double Canopy Cover EP Epoxy Dipped Windings RG Brake Corrosion Protected F Blower Cooling Fan 3ph amp 1ph RLS Backstop FC Blower Cooling Fan 1 SH Motor Space Heater FHL Brake Lockable Manual Release SR Brake Dust Protected H Energy Efficient TF Thermistor HL Brake Manual Hand Release TW Thermostat IG Incremental Encoder VN 10 1 Constant Torque Rated Motor IP66 IP66 Environmental Protection VR 5 1 Constant Torque Rated Motor IR Brake Current Sensing Relay VW 20 1 Constant Torque Rated Motor KB Condensation Holes Removable Plugs VZ F 1000 1 Constant Torque Rated Motor KD Condensation Holes Open WE 2nd Motor Shaft End MIK Brake Microswitch WU High Slip Rotor MS Power Plug Connector Z High Inertia Motor Fan Motor Nomenclature 100L 4 BRE 40 Other Options Brake Size Nm Brake L Number of Poles Frame Size Ordering Examples 100L 4 BRE 100 HL RG 160L 2 BRE 40 FHL SR Corrosion Protection amp Corrosion Prot Hand Release Lever Locking Hand Release Lever 100 Nm Brake Torque 40 Nm Brake Torque Brake Brake 4 Poles L 2 Poles Motor Frame Size Motor Frame Size 100 Frame Motor with 4 poles Brake 100 Nm with 63 Frame Energy efficient motor with 4 poles a hand release lever corrosion protected brake Brake 40
30. is good practice to secure the key into the key slot with a medium strength thread locking agent or alternatively one may stake the key in place H Re install the coupling on the new motor shaft making sure the placement of the coupling is in the same location as it was on the old motor See Step E I Clean all old gasket material sealants contamination and corrosion from the flange surface on the driven equipment J If the motor is utilized in a wet or wash down environ ment apply a sealing gasket or gasket eliminating com pound to the mating flange surface as would seem most appropriate for the application K Support the new motor and mount it flush against the mating flange surface of the driven equipment Apply a medium strength thread locking agent to the bolt threads M Install the bolts and tighten them to the appropriate torque N Re establish the electrical connection to the motor O Observe the subsequent start up closely to make certain the equipment is operating properly NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE gt 930000 16 of 17 22 Testing IMPORTANT NOTE NORD electric motors do not require periodic testing However if a motor is removed from its installation NORD recommends that the motor be checked according to the following static and dynamic testing procedures before it is r
31. lly supplied with internally grease lubricated bearings and require no lubrication during normal operation NORD motor frame sizes 250 and larger are supplied with grease fittings for re greasing the motor bearings Motors with grease fittings are normally supplied with a label indicating the grease type used the suggested re lubrication interval and the amount of new grease to be applied General bearing maintence guidelines are listed in Table 3 IMPORTANT NOTE NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE gt 930000 7 of 17 Typical motor bearing grease is NLGI 2 consistency high grade product with a polyurea base thickener synthetic or blended mineral synthetic oil and stabilizing agents to protect against heat and oxidation Table 3 Motor Bearing Maintence Guidelines Frame Size Power Poles Re greasing Interval 0 16 60 HP 63 225 00 12 45 kW Maintence Free 75 125 HP 2 4000 h 250 to 280 55 75 kW 4to8 8000 h 315 150 250 HP 2 3000 h 132 200 kW 4to8 6000 h When re greasing motor bearings do not to mix different greases without verifying the compatibility with a repu table grease lubrication supplier Mixing incompatible products can lead to bearing failure HARMFUL SITUATION 13 Mechanical Installation Integral
32. or bi metallic switches can be wired di rectly into the control circuit without a separate control mod ule or tripping device Thermostats operate on a relatively high control voltage so they are much less sensitive to volt age interference from the main power supply Often one can run thermostat leads and motor power leads next to each other when using the appropriate shielded cable The in staller is responsible to wire the thermostats into the motor control circuit The leads may be labeled in a variety of ways as indicated Thermistors Option TF Standard Connection Three devices series connected one per phase Positive temperature coefficient PTC 150 C 5 C 20 5000 below transition gt 4 above transition Type Transition Temperature Resistance Reed Current lt 1mA Max Voltage 30V Lead Identification P1 and P2 or inside terminal box TP1 and TP2 With a separate control module or tripping device ex Kir wan INT69 thermistors are used to sense motor overload over temperature conditions by converting the critical oper ating temperature limit into large internal resistance change Due to their small size heat sink construction and high change in resistance value minor resistance variations caused by relatively long lead runs can be tolerated This feature also allows for one controller to be used for several tempera ture sensing locations Many variable frequenc
33. r a lengthy period of storage or standstill approx 6 months the insulation resistance of the winding should be checked DA WARNING During and directly after measurement the motor tion terminals carry hazardous voltages A Control The insulation resistance of new cleaned or repaired motor windings against the grounded housing and against one an other should be gt 200 Mega Ohms B Measurement Using a Mega Ohm meter apply a DC voltage of 500 VDC to the motor winding for a period of 60 seconds and record the winding insulation resistance compared to ground e The 500 VDC test voltage is applicable to low voltage motors up to 1000 VAC When performing this test the temperature of the windings should be 25 C 15 C 77 F 27 F C Verification e If the insulation resistance of the winding is less than 50 Mega Ohms the cause may be moisture The windings should be dried and the test should be repeated e After any lengthy period of operation the insulation resistance may drop So long as the measured value does not fall below the critical value of 50 Mega Ohm the motor may continue to be operated e f the measured value falls below the critical 50 Mega Ohm level the cause must be established and the windings or winding sections must be cleaned dried repaired or replaced as needed 12 Bearing Lubrication NORD motor frame sizes 63 up to and including 225 are nor ma
34. rocedures Maintain Proper Cooling Operating the motor without the intended cooling fan may cause overheating and result in very hot surfaces per sonal injury and material damage Never commission a motor intended to be fan cooled when it is missing the shaft driven fan or external blower assembly A WARNING A AS WARNING Electrical machines contain dangerous voltage levels elec trically live parts rotating surfaces and hot surfaces To prevent injury death or possible equipment damage al ways observe the following Keep all safety covers and guards in place during ation Remove and replace covers in compliance with the applicable safety regulations e Allow the machine to cool down before starting any work on it Operate the machines properly Perform regular maintenance on the machine Secure and guard free standing shaft extensions Condensation Drain Holes Optional Inserting objects into the condensation drain holes can damage the winding and can result in death serious injury and damage to property e Before opening sealed drain holes make sure the motor is in a no voltage condition Close the condensa tion drain holes before re commissioning e Exercise caution around drain holes that are intended to be left open especially when the motor is energized HARMFUL SITUATION A WARNING A Electrically Live Parts Electrical machines cont
35. tion Toll Free in the United States 888 314 6673 www nord com docs DRIVESYSTEMS 17 Inspection MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE Inspect the motor after every 500 operating hours gt 930000 13 of 17 A WARNING If it is necessary to clean the motor exterior do not use shop air Shop air force contaminents into the motor and may cause parts damage or result in blowing debris causing injury Table 8 Inspection Guidelines Inspect Check Action Motor Exterior Check the external surfaces for contamination Accumulation of dirt and fibrous deposits must be removed Clean the motor external surfaces using clean lint free cloths Clean deposits from between cooling fins using a vacuum cleaner and a stiff bristled nylon brush Check the external surfaces for oil film and greasy deposits Clean the oil film and greasy deposits from the motor surface using clean lint free cloths If necessary moisten the cloth with an approved non flammable residue free solvent Do not pour solvent on the motor Check for evidence of damage or overheating If the motor has physical damage replace the motor Motor Mountings Make sure the mounting hardware is secure If the mounting hardware is not secure check the motor gearbox alignment and tighten the mounting hardware Motor Electrical Conne
36. ved in the transport connection commis sioning and maintenance of any NORD product must be carried out by qualified and responsible technicians All applicable national regional and local work regulations and safety requirements must also be complied with NORD assumes no liability for personal injury accidental death or equipment damage and malfunctions resulting from failure to comply with installation or operating in structions safety notes or any work regulations and laws A WARNING A To avoid electrocution injury or death make certain the motor is properly grounded completely de energized and brought to a no voltage condition prior to working on any electrical connections NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 MOTORS AC INDUCTION SINGLE amp POLYPHASE RETAIN FOR FUTURE USE U30000 1 of 17 2 Motor Types NORD AC electric induction motors described in this manual generally include the following types Single speed or two speed design Three phase alternating current or single phase design Enclosure types TEFC TENV and TEBC 3 Enclosure Types Totally enclosed fan cooled TEFC TEFC motor designs rely on fan that is mounted on the mo tor s rotor shaft so the cooling capacity vary based upon the motor s operating speed Totally enclosed non ventilated TENV The TENV motor designs rely purely on convection cooling and t
37. y drives come with on board thermistor inputs NORD does not supply the thermistor control module NORD Gear Limited Toll Free in Canada 800 668 4378 06 13 12 WARNING Thermostats and Thermistors will automatically reset WARNING wiring must be completed by qualified personal and adhere to all local codes Space Heaters Option SH Connection Diagram shown on Page 9 Space Heaters are mounted directly on the motor winding The leads are brought into the terminal box and labeled H1 and H2 They require separate voltage supply and must not be energized when the motor is energized heaters will keep the winding of the motor approximately 5 C above the surrounding ambient Table 5 Space Heater Data Heater Strips MTR Frame Size Wattage Voltages 110V 230V 1 460V 63 amp 71 18W 110V 230V 1 460V 80 25W 110V 230V 2 460V 90 112 50W 110V 230V 2 460V 132 180 100W 110V 230V 2 200 amp 225 120W 460V Encoder Option IG Most standard encoders will be enclosed inside the fan cover Incremental Quadrature Differential Marker Channel IP66 Protection IG1 1024PPR 162 2048PPR IG4 4096PPR TTL RS422 HTL Push Pull Line Driver 5V or 10 30V available Absolute encoders also available Seperate encoder wiring instructions are provided by NORD NORD Gear Corpora
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