Siemens 1PH728 Series Operating Instructions Manual
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Siemens 1PH728 Series Operating Instructions Manual

Three-phase induction motor
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Three-phase induction motor
AC COMPACT DRIVES
Operating Instructions
Edition 12.2002
1PH728.
Order number: A5E00177602A

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Summary of Contents for Siemens 1PH728 Series

  • Page 1 Three-phase induction motor AC COMPACT DRIVES Operating Instructions Edition 12.2002 1PH728. Order number: A5E00177602A...
  • Page 2 Siemens branch office. © 2002 All rights reserved We reserve the right to make technical changes Order to A&D LD IO...

  • Page 3: Table Of Contents

    Measures to be performed prior to commissioning...........4-3 Energizing ......................4-4 Operation Operation ......................5-1 Stoppages ......................5-2 De-energizing....................5-2 Faults Fault diagnosis table ..................6-1 Maintenance Maintenance......................7-1 7.1.1 Maintenance instructions ..................7-1 7.1.2 Maintenance intervals ..................7-2 7.1.3 Bearings ......................7-3 7.1.4 Lubrication......................7-3 SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.
  • Page 4 Terminal box assignments................3-6 Table 6-1 Diagnosis table for mechanical faults ............6-1 Table 6-2 Diagnosis table for electrical faults ...............6-1 Table 7-1 Service period intervals ................7-3 Table 7-2 Rolling-contact bearing greases ..............7-4 SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 5: Safety Information

    Warning means that death, grievous injury or extensive damage to property may occur if the appropriate precautions are not taken. Caution Caution with a warning triangle, means that minor personal injury may occur if the appropriate precautions are not taken. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 6: Safety And Application Information

    There is consequently a risk of severe personal injury or substantial damage to property, for example, if the necessary covers are removed without authorisation or if the equipment is handled improperly, operated incorrectly or maintained inadequately. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.
  • Page 7 The instructions and the motor documentation are available in the languages specified in the supply contracts. Note We recommend engaging the support and services of your local SIEMENS Service Center for all planning, installation, commissioning and maintenance work. SIEMENS AG - Operating Instructions...

  • Page 9: Description

    The drive systems are put together on an individual basis. When you take receipt of the delivery, please check immediately whether the scope of the delivery matches up with the accompanying documents. SIEMENS will not accept any warranty claims relating to items missing from the delivery, that are submitted later.

  • Page 10: Nameplate

    Description any defects/incomplete delivery detected immediately with the SIEMENS – representative responsible. These Operating Instructions belong to the scope of delivery and must be kept where they can be easily accessed. The nameplate enclosed as a loose item with the delivery is provided to enable the motor data also to be kept on or near the motor or installation.

  • Page 11: Design

    (cooling method IEC 60 034-6; DIN / EN IEC 60 034-6). The separately driven fan unit and the terminal box can be mounted in a different position depending on the order. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 12: Drive

    2.5.2 Drive Description The variable-speed, three-phase motors of the 1PH7 series are supplied with power by a frequency converter. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 13: Types Of Construction

    Additional hoisting points are provied for those types of construction that differ from the basic types of construction IM B3 and IM B35. Figure 2-3 View from above onto type of contruction IM B3 SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 14: Table 2-2 Additional Hoisting Points For Different Types Of Construction

    For those types of construction that differ from basic types of contruction IM B3 and IM B35, the louvered covers must be positioned as follows at the air inlet and air outlet in order to maintain the degree of protection: SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 15: Regulations

    Degree of protection IEC / EN 60034-5 Cooling IEC / EN 60034-6 Type of construction IEC / EN 60034-7 Noise emission IEC / EN 60034--34-9 Vibration severity levels IEC / EN 60034-14 SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 16: Degree Of Protection

    The shaft gland at the drive end (D-end) is built to degree of protection IP 54 as standard. The standard version of the motors is not suitable for operation in a salt-laden or corrosive atmosphere, nor for installation outdoors. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 17: Installation / Assembly

    Transporting motors with a rotor shipping brace Motors with cylindrical-roller bearings have a rotor shipping brace (shaft block), in order to prevent the bearings from becoming damaged during transportation/shipping. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 18: Installation

    Motors that are configured to allow pipes to be connected and/or for operation with a separately driven fan must have pipes and a fan of suitable type and dimensioning mounted and connected to them. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 19: Table 3-2 Pressure Drop In Motors With Pipe Connection

    The featherkeys are only locked against falling out during shipping. Noise emissions Motors of the 1PH7 series have a measuring-surface sound pressure level Lp(A) of approx. 74 dB(A) in a speed range from 0 through 3000 rpm. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 20: Mounting

    Motors that are mounted with their feet on the wall due to their type of construction must be fixed in position by means of an adequately dimensioned form closure (e.g. by pinning or using a wall mounting strip). SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 21: Connecting The Stator Winding

    Figure 3-1 Circuit diagram Select the connecting cables taking into account the rated current and the system specific conditions (e. g. ambient temperature, routing type etc. in accordance with IEC / EN 60204-1). SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 22: Table 3-3 Terminal Box Assignments

    If necessary, insulate the cable lugs in order to maintain the minimum clearances in air of 10 mm and the 20 mm creepage distance normally present. The tightening torque for contact nuts and M16 mounting bolts is 90 Nm. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 23: Figure 3-2 Tightening Torques For Contact Nuts And Mounting Bolts

    (with an EMC cable gland made of metal). Notice Unused threads must be sealed with a metallic screw plug. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 24: Connecting The Ground Conductor

    Tightening torque for the fixing screws of the lid: 22 Nm Connecting the ground conductor General The cross-section of the ground conductor of the motor must comply with the regulations for electrical installations, e.g. IEC / EN 60204-1. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 25: Figure 3-3 Detailed View: Connecting Points For Ground Conductor (1 + 2)

    •= the minimum necessary screw-in depth and the tightening torque for the clamping bolts must be maintained. These are: Bolt (*) Screw-in depth Tightening torque M8 x 30 >8 mm 20 Nm SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 26: Connecting The Fan

    If necessary, switch the direction of rotation by swapping over two phase conductors in the terminal box. Connecting Connect up the fan in the terminal box of the fan unit. Figure 3-4 Detailed view of fan (1) Fan terminal box SIEMENS AG - Operating Instructions 3-10 Three-phase induction motor 1PH728.

  • Page 27: Connecting The Speed Sensor

    Connecting the temperature sensor Connecting Connect the wires of the temperature sensor to the speed sensor connector with the aid of connecting leads (see section entitled "Connecting the speed sensor"). SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728. 3-11...
  • Page 28 The motors are fitted with a back-up temperature sensor, which is likewise connected to the auxiliary terminals and, if necessary, can be reconnected to the plug connector of the speed sensor (see auxiliary terminals diagram). SIEMENS AG - Operating Instructions 3-12 Three-phase induction motor 1PH728.

  • Page 29: Commissioning

    Check the supply feeder cables connected, in order to ensure that the line supply voltage cannot be connected. Only ever measure the insulation resistance of the winding to the motor enclosure when the winding temperature is between 20 and 30°C: SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.
  • Page 30 (approx. 20 ... 30°C). Notice If the measured value is close to the critical value, the insulation resistance should be subsequently checked at appropriately shorter intervals. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 31: Measures To Be Performed Prior To Commissioning

    •= all separately driven fans fitted are ready for operation and have been connected such that they rotate in the direction specified. •= the flow of cooling air is not impeded. •= brakes (if fitted) function perfectly. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 32: Energizing

    If the motor is running irregularly or emitting abnormal noises, de-energize it and determine the cause of the fault as the motor runs down. Notice The critical speed n = 3300 1 rpm is the maximum operating speed permissible over short periods. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 33: Operation

    In this case, the maintenance technician must be immediately notified in order to prevent disturbances that could either directly or indirectly lead to severe personal injury or substantial material damage. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 34: Stoppages

    Always refer to the respective manual of the frequency converter when de- energizing. If the motor is stopped for longer periods of time, switch off the fan unit and switch on the space heater (if fitted). SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 35: Faults

    2. Take any changes possible due to a rise in temperature into account. Table 6-2 Diagnosis table for electrical faults SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.
  • Page 36 - High temperature rise at no load - High temperature rise under load - High temperature rise of individual winding sections Note If electrical faults arise, please refer to the manual of the frequency converter. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 37: Maintenance

    Be careful of those parts of the three-phase motor that get hot and let them cool down before starting maintenance work. Safety rules Always comply with the following safety rules before starting maintenance work: Danger •= Isolate •= Safeguard aginst reclosure •= Disconnect from supply SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 38: Maintenance Intervals

    Note If anything is unclear, we urgently recommend that you consult us stating the type and serial number of the three-phase motor or get one of the SIEMENS Service Centers (see section entitled "SIEMENS Service Centers") to carry out maintenance work for you.

  • Page 39: Bearings

    With consideration for operation at the frequency converter, the bearing at the non drive end is electrically insulated. 7.1.4 Lubrication Relubrication intervals The relubrication intervals are stated on the lubrication instruction plate of the three-phase motor. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 40: Table 7-2 Rolling-Contact Bearing Greases

    Notice Never mix greases that have different thickening agents and base oils. Initial lubrication SHELL Alvania G3 grease is normally used to initially lubricate the bearings. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 41: Figure 7-1 End Shields At Drive End And Non Drive End With Grease Nipples

    The shaft should rotate so that the new grease can be distributed throughout the bearing. The bearing temperature rises sharply at first, then drops to the normal value again when the excess grease is displaced out of the bearing. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 42: Cleaning

    Particularly when cleaning using compressed air, make sure you use suitable extraction equipment and wear protective gear (safety goggles, breathe filter, etc.). Inspection 7.2.1 General inspection specifications Instructions relevant for safety SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 43: Initial Inspection

    Further tests are also necessary in line with the additional instruction manuals assigned (e.g. bearings,cooler, etc.) or in line with the particular system-specific conditions. Notice Impermissible deviations detected during this inspection must be eliminated immediately. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 44: Main Service

    Qualified persons, as far as the safety instructions given in this manual are concerned, are those who have the necessary authorization to commission, earth and identify equipment, systems and circuits in accordance with the relevant safety standards. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 45: Dismantling

    When attaching the rotor in the vertical position, make sure that the centering recesses in the shaft ends ((DIN 332) - DS M24) have a recessed thread; SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.
  • Page 46 (bearings, preloading springs, equalizing rings, caps with different centering length, etc.), especially when the bearings at the drive end and non drive end are of the same size. Notice Mark the components before dismantling. SIEMENS AG - Operating Instructions 7-10 Three-phase induction motor 1PH728.

  • Page 47: Figure 7-2 Disassembling The Rotary Shaft Seal

    Pull the rotary shaft seal together with the bearing cap and/or end shield off the shaft. Disassembling the speed sensor Figure 7-3 Detailed view of the speed sensor (1) Shaft (2) Speed sensor SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728. 7-11...

  • Page 48: Re-Assembly

    Clean bare joints between parts before reassembling (e.g. between enclosures, end shields and the active parts of bearings). Coat the bare joints between parts with a non-hardening sealant, e.g. MARSTON HYLOMAR SQM32M. SIEMENS AG - Operating Instructions 7-12 Three-phase induction motor 1PH728.
  • Page 49 Packed sealing gap between enclosure and end shield (1) End shield (2) Packed sealing gap (3) Enclosure (4) Protective tube Before you screw on the end shield, seal the gap (2) with MARSTON HYLOMAR SQ32M sealant. SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728. 7-13...
  • Page 50 Sealing the bearings The outer bearing seal comprises a rotary shaft seal. When installing the bearings, make sure that the seat of the shaft is not greased. SIEMENS AG - Operating Instructions 7-14 Three-phase induction motor 1PH728.

  • Page 51: Bolted Connections

    Nuts or bolts that are mounted together with locking, resilient and/or force- distributing elements (e.g. tab washers, spring lock washers, etc.) must be refitted together with identical, fully functional elements. Always renew positive-action locking elements! SIEMENS AG - Operating Instructions 7-15 Three-phase induction motor 1PH728.

  • Page 53: Spare Parts

    Grease slinger 3.40 Deep-groove ball bearing (floating bearing) 3.41 Cylindrical-roller bearing 3.60 Inner bearing cap 4.20 Outer bearing cap (Non drive end) 4.35 Grease slinger 4.40 Deep-groove ball bearing, insulated (locating bearing) SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.
  • Page 54 Grease nipple Terminal box Type 1XB7712 20.08 Terminal box base 20.20 Housing (terminal box) 20.30 Lid (terminal box) 20.50 Entry plate (terminal box) 32.12 Housing with fan unit, complete 55.12 Speed sensor SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.

  • Page 55: Figure 8-1 Spare Parts 1Ph7

    Spare parts Figure 8-1 Spare parts 1PH7 SIEMENS AG - Operating Instructions Three-phase induction motor 1PH728.
  • Page 58 SIEMENS AG Group: Automation and Drives (A&D) Division Large Drives (LD) © 2002 All rights reserved Postfach 4848, D-90327 Nürnberg Subject to change without prior notice Siemens Aktiengesellschaft Order number: A5E00177602A Printed in the Federal Republic of Germany Edition 12.2002...

This manual is also suitable for:

1ph728 b series1ph7284 d series1ph7286 d series1ph7288 d series1ph728 f series

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