SEM HD55 User's Manual
Contents
1. maios 4 yoysey yoysey yoeqpae J0 98uU0D SN yoysey 194520 10290 000 57 Bulxi4 MAINS 19409 MOINS 19409 3 Bulxi4 F A N 19409 3 209 sre 3 JOJO 20 10404 Apog 100 Fd 3 3 g O d 1010 AJUO oyog 499 9 Apog JOJOY 10108 OD 1 953 ON W311 351 sued GGYH GH 9 4 122 WN 0752 o OLW 06 1GH 061 UWE 19919 1 WN 0 8 OF OW Zvi 9 4 wN O S oaa SW S1L YH GH O S OF SW 26 591 41 SL MIN 22 o PW OZ YH OH 894 Z ZZ 9246 SZW YH OH 121971 SEM Limited Faraday Way Orpington Kent BR5 England ontrolled motor technology 44 0 1689 884884 0 1689 884700 E mail info sem co uk Internet http www sem2. Bulsojouy pug mas pug mas ux mag 4 Eld 1 2295 21 S N S N 1010 1915 9 xog pue pue Kay Pr eas lO 19409 Bulsojouy pug 91219 O pug Apog 100 Apog Bulxi4 Apog Apog JOJOY INN Ajquassy 10108 OD NOILdIHOSSG ON 351 sued 22 UN 052 q ur 12 uN 0 8 vy WR o g OF uoys u yp O S OF 9 64 WN 22 91 dqu wy 272 uab saubo 55245119 OLW 061GH 061 OW 271 4H GH SW SLL SW 26 PW 02 STW
3. Bulxi4 F A N 3 JOJO Apog Apog 2010 Fd dijou 3 F A N 8 O d 1010 oyog JOJOY A quiassy 1004 NOILdIWOSAd 351 sued OZYH GH LZ wN 0 9 46 9 075 oF uoh 9 u Pr UN 05 9 60 ON ZZ OF 9 4 272 122 0762 OLW 0610H 061 WWE FW 2 4 BH GH 5 11 SW Z 8H GH WW 04 SH HR STW 55 SEM Limited Faraday Way Orpington Kent 5 England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E mail info sem co uk Internet http www sem co uk ontrolled motor technology 9 9 servicing instructions 1 1 1 1 2 1 3 1 4 1 5 1 6 2 2 2 3 2 4 2 5 3 2 3 3 3 4 3 5 3 6 3 7 3 8 GENERAL Before starting work on the motor these servicing instructions should be read and fully understood Servicing of SEM motors must be done only
4. WARNING Servomotors contain magnetic material which will attract metal particles Care should be taken when dismantling motors to avoid this All D C servomotors manufactured by SEM contain magnets which are air stable and can be dismantled without demagnetisation controlled motor technology servicing instructions 1 1 1 2 1 3 1 4 1 5 1 6 2 1 2 2 2 3 2 4 2 5 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 4 1 GENERAL Before starting work on the motor these servicing instructions should be read and fully understood Servicing of SEM motors must be done only by suitably trained and qualified personnel and only after such motors have been electrically isolated and removed from their mechanical drives The jaws of any vice or clamp must be suitably protected when used to grip any part of the motor When separating the motor end covers from the motor body care must be taken to avoid damage to their mating surfaces NOTE There are strong magnetic forces between the stator and the rotor of all SEM servomotors Fingers should be kept clear of the gaps between the stator and end covers during assembly and disassembly of the rotor Dismantled components awaiting reassembly should be kept in a safe clean and dry location Various types of encoder are used involving different procedures for dismantling reassembly connection setting up and testing Contact SEM with regard to r
5. SS 4H GH 111971 INOWOL queweduoiny JOPBULO juaweBbuouy SW puoydo puoydo SEM Limited Faraday Way Orpington Kent BR5 3QT England mail info sem co uk Internet http www sem co uk Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E SEM bans controlled motor technology servicing instructions 1 14 1 2 1 3 1 4 1 5 1 6 2 1 2 2 2 3 2 4 2 5 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 GENERAL Before starting work on the motor these servicing instructions should be read and fully understood Servicing of SEM motors must be done only by suitably trained and qualified personnel and only after such motors have been electrically isolated and removed from their mechanical drives The jaws of any vice or clamp must be suitably protected when used to grip any part of the motor When separating the motor end covers from the motor body care must be taken to avoid damage to their mating surfaces NOTE There are strong magnetic forces between the stator and the rotor of all SEM servomotors Fingers should be kept clear of the gaps between the stator and end covers during assembly and disassembly of the rotor Dismantled components awaiting reassembly should be kept in a safe clean and dry location Various types of encoder are used involving different procedures for dismantling reassembly connection setting up
6. Apog 4 Apog Apog 10104 INN A quiessy 10104 NOILdIWOSAd 2511 sped 59 4 122 WN 062 OF uayu LZ WN 0 8 dqu WN O S py wN o s uaiu sq ur 6 1 WN 22 vays 9 2 WN 2 ssajysug OLW 0610H 06 9 2 1 YH OH SW SLLYH OH SW 26 WW 04 55 191 INOUOL pouondo juaweBubuy 1opauu0 Sy puodo SEM Limited Faraday Way Orpington Kent BR5 3QT England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E ontrolled motor technology mail info sem co uk Internet http Awww sem co uk 99 REMOVAL Instructions common to HD 55 HD 70 HD 92 HR 92 Extreme care to be taken during the removal and re assembly of the Tacho When stripping Tacho Motor Tacho parts must be removed first 1 Disconnect leads at feedback connector 2 Undo screws holding PCB board and lift off 3 Undo screws holding Tacho stator in N D E cover and lift out 4 With suitable extractor pull out the Tacho rotor taking care not to damage these components 5 Continue with dismantling of the
7. Slacken the 3 screws 7 holding the resolver stator and then rotate it until the voltmeter gives a maximum reading Reconnect the AC voltmeter to pins S4 and R2 Make a small final adjustment of the resolver stator to get a minimum reading Retighten the screws disconnect the test socket the supplies the voltmeter and links let the brake if used be re applied Attach the protective shield if fitted to the resolver and fix the enclosing cover 17 to the NDE cover in accordance with marks made in operation 2 4 ELECTRICAL TESTS NECESSARY BEFORE CONNECTING MOTOR TO AMPLIFIER Measure motor stator winding resistances U V V W W U These must be equal to within 3 Check dielectric strength by flash test at 1000 Vac from Phase power connector U to motor body b Phase U to thermal sensor feedback connector pins Thermal Sensor and Thermal Sensor Phase U to brake connections power connector pins B amp If flash test is not possible then check that insulation resistance is greater than 1megaohm Check dielectric strength by flash test at 500Vac or with a 500Vdc supply from motor body to connections power connector pins B and Thermal sensor feedback connector pins Thermal Sensor and Thermal Sensor f Resolver feedback connector pins R2 and S1 If flash test is not possible then check that insulation resistance is greater than 1megaohm SEM m
8. 2 2 2 3 2 4 2 5 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 GENERAL Before starting work on the motor these servicing instructions should be 4 2 read and fully understood Servicing of SEM motors must be done only by suitably trained and qualified personnel and only after such motors have been electrically isolated and removed from their mechanical drives The jaws of any vice or clamp must be suitably protected when used to grip any part of the motor When separating the motor end covers from the motor body care must be 4 3 taken to avoid damage to their mating surfaces NOTE There are strong magnetic forces between the stator and the rotor of all SEM servomotors Fingers should be kept clear of the gaps between the stator and end covers during assembly and disassembly of the rotor Dismantled components awaiting reassembly should be kept in a safe clean 5 and dry location Various types of encoder are used involving different procedures for dismantling reassembly connection setting up and testing Contact SEM with regard to relevant servicing procedures for the particular type of encoder involved 5 2 MARKING 5 1 The following relationships must be marked with a marker pen or other suitable method before dismantling Drive end DE cover A to motor body B Non drive end cover D to motor body C 54 5 3 Enclosing Cover 17 to non drive end NDE cover 11 Prior to resolver disma
9. INN qw ssy 1004 NOILdIWOSAd 122 WN 052 UAB OLW 0610H 06 LZ WN 0 8 A 91 271 YH GH py wN O S SW SLL YH OH ur wN 075 oF uays SW 26 YH OH ur 61 WN 22 A uay YW 04 sq 2 wN g z STW 5 11191 INOYOL SEM Limited Faraday Way Orpington Kent BR5 3QT England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E ontrolled motor technology mail info sem co uk Internet http Awww sem co uk 99 Sy 2 puodo puoydo 351 sued Z6YH QAH servicing instructions 1 14 1 2 1 3 1 4 1 5 1 6 2 1 2 2 2 3 2 4 2 5 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 GENERAL Before starting work on the motor these servicing instructions should be read and fully understood Servicing of SEM motors must be done only by suitably trained and qualified personnel and only after such motors have been electrically isolated and removed from their mechanical drives The jaws of any vice or clamp must be suitably protected when used to grip any part of the motor When separating the motor end covers from the motor body care must be taken to avoid damage to their mating surfaces NOTE There are strong magnetic forces between the sta
10. Removal of resolver Important At all stages of removal and reassembly the resolver unit must be handled with care Unscrew 36 and release resolver body 4 complete At this point the resolver rotor 3 is free and will drop out of the resolver body unless held in place by hand Remove the resolver and store in a safe place until re assembly Removal of cover Brake Models Remove 8 cover screws 21 then 3 screws 19 holding brake assembly This allows cover to be removed leaving the brake and bearing on the shaft and exposing the leads to the brake Disconnect these leads and remove complete rotor assembly as Section 3 4 Pull the bearing off the shaft leaving brake free to be removed When this sequence is complete continue as Section 3 4 above RE ASSEMBLY OF THE MOTOR To fit N D E cover to body Note new circlips oil seals and bearings must be fitted on the re assembly as standard procedure Feed the thermal overload leads through the hole in the N D E cover 4 2 4 3 44 4 5 4 6 4 7 5 1 5 2 5 3 5 4 5 5 5 6 5 7 6 1 6 2 6 3 6 4 feed the earth lead through the hole in the body and fit 4 cap head screws Fit the resolver to the N D E cover with 3 screws and clamping washers metal shield outwards feed both resolver and thermal overload leads through the hole on the left of the N D E cover Fit 2 connector elbows with cap screws and gaskets bringing out The lea
11. 2 6 3 screws Fit the resolver to the N D E cover with 3 screws and clamping washers metal shield outwards feed both resolver and thermal overload leads through the hole on the left of the N D E cover Fit 2 connector elbows with cap screws and gaskets bringing out the leads at the same time Press the pins firmly into the back of the connectors until they click into place Position the connectors and gaskets and tighten down with screws and washers Fit O ring bearing and circlip to D E cover slide rotor into cover bearing assembly Slide bearing onto N D E of shaft Supporting the inner race of the bearing press both bearings into place Fit spacer and tolerance ring to N D E Fit circlip at D E Carefully stand motor upright with N D E down Locate the wave washer in the N D E housing lower the rotor cover assembly very carefully into the body and screw the D E cover to the body Support and press into position resolver rotor Fit a new tolerance ring 2 Fit brake carefully press rotor into brake ensuring that teeth line up correctly Fit rotor to body as above but connect and isolate 2 brake leads before pushing into place RESETTING THE RESOLVER This only applies to a standard resolver supplied by SEM with the standard setting For any other resolver refer to the drive manufacturer For these procedures it is necessary to make connections and links to feedback connector pins To avoid damage to t
12. D E Housing TAKE CARE The rotor itself is covered by a protective tape and before any attempt is made at further withdrawal the rotor must be properly supported and eased through the motor body so that the tape is not damaged in any way This is most important To remove rotor from N D E cover remove circlips 14 from N D E cover to release N D E bearing 6 Support the N D E cover and rotor assembly in such a way as to allow the rotor to be gently tapped or pushed out of the housing Only use a hide mallet if tapping out is necessary Removal of D E Cover Brake Models Remove 6 screws which hold brake assembly to D E housing then follow instructions as for non brake model section 3 7 When drive end cover is removed the 3 9 41 4 2 4 3 44 5 1 5 2 5 3 5 4 5 5 5 6 5 7 6 1 6 2 6 3 brake assembly 38 and bearing 15 are left on the rotor shaft 1 After removing circlip 41 the bearing itself can only be removed by use of a suitable tool This will leave the brake assembly free to be removed from the rotor shaft after disconnection of the relevant spade connectors Then follow instructions as applicable to nonbrake motor section 3 7 RE ASSEMBLY OF MOTOR Note New circlips bearings oil seals and O ring must be fitted on reassembly as standard procedure Also ensure that all marks made in section 2 are in alignment as applicable Fit bearing 6 into N D E housing Fit D
13. E Bearing 15 onto rotor 1 Supporting inner race of N D E bearing press rotor assembly back into N D E housing fit circlip 40 Fit new O ring 13 Carefully re insert assembled rotor and N D E housing through the motor body at the same time feeding connection wires through the crescent shape hole in the N D E housing taking care not to trap wires or to damage the protective tape on the rotor when completing this assembly Tighten screws using correct torque see torque table Refit brake when fitted and fit bearing 15 reconnect spade connectors Refit drive end housing 12 with wave washer 16 and O ring 13 in position Refit screws and tighten to correct torque see torque table Fit oil seal 19 Refit Resolver Slide Resolver body into non drive end of rotor shah and screw into N D E housing using screw 7 and clamps 8 Refit resolver rotor 3 refit nut 2 and tighten to correct torque see torque table gripping drive end of rotor shaft in a suitably protected vice as section 3 2 Re assemble M S connectors or terminal box assembly as applicable in reverse sequence to sections 3 3 amp 3 4 RESETTING THE RESOLVER This only applies to a standard resolver supplied by SEM with the standard setting For any other resolver refer to the drive manufacturer For these procedures it is necessary to make connections and links to feedback connector pins To avoid damage to these pins it is advisabl
14. cover and rotor assembly in such a way as to allow the rotor to be gently tapped or pushed out of the housing Only use a hide mallet if tapping out is necessary Removal of D E Cover Brake Models Remove 6 screws which hold brake assembly to D E housing then follow instructions as for nn 41 4 2 5 1 5 2 5 3 5 4 5 5 5 6 5 7 6 1 6 2 6 3 6 4 brake model section 3 6 When drive end cover is removed the brake assembly 38 and bearing 15 are left on the rotor shaft I After removing circlip 41 the bearing itself can only be removed by use of a suitable tool This will leave the brake assembly free to be removed from the rotor shaft after disconnection of the relevant spade connectors Then follow instructions as applicable to nonbrake motor section 3 7 RE ASSEMBLY OF MOTOR Note New circlips bearings oil seals and O ring must be fitted on reassembly as standard procedure Also ensure that all marks made under Para 1 a b c are in alignment as applicable Fit bearing 16 into N D E housing Fit D E Bearing 115 onto rotor 1 Supporting inner race of N D E bearing press rotor assembly back into N D E housing fit circlip 40 Fit new O ring 113 11 Carefully re insert assembled rotor and N D E housing through the motor body at the same time feeding connection wires through the crescent shape hole in the N D E housing taking care not to trap wires or to damage the protec
15. feedback connector pins Thermal Sensor and Thermal Sensor Resolver feedback connector pins R2 and S1 f flash test is not possible then check that insulation resistance is greater than 1megaohm SEM motor technology SEM Limited Faraday Way Orpington Kent BR5 England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E mail info sem co uk Internet http www sem co uk 4 022 Assy 40104 oyog pue 01015 9129 eye1g 1 aang maos ux 4 21 S N 201294409 S N 1010 JOYSEH M S Bulxi4 mas Buly pue addi yoo g hey pr xog 5 0 O Bulsojouy pug 91219 Apog 100 dwe 9
16. housing using screw 7 and clamps 8 Refit resolver rotor 3 refit nut 2 and tighten to correct torque see torque table gripping drive end of rotor shaft in a suitably protected vice as section 3 2 Re assemble M S connectors or terminal box assembly as applicable in reverse sequence to sections 3 3 amp 3 4 RESETTING THE RESOLVER This only applies to a standard resolver supplied by SEM with the standard setting For any other resolver refer to the drive manufacturer For these procedures it is necessary to make connections and links to feedback connector pins To avoid damage to these pins it is advisable to make such connections and links via a suitable separate test socket which mates with the feedback connector multi pin plug 30 and which has short leads connected to its sockets Alternatively appropriate pins can be made available for connections and links by withdrawing them from plug 30 as in Section 3 3 and 3 4 Disconnection If a brake is used it must be temporarily held off during this operation by applying a 24V dc supply across the brake terminals Undo 4 screws 37 and pull back the enclosing cover 17 to give access to he resolver With the above test plug connected to the feedback connector ink pins R1 to S3 amp pins R2 to S2 Connect a signal generator approx 5V 6kHz between pins R1 R2 Connect an AC voltmeter between pins 1 and R2 At the power connector link motor phase pins V
17. if fitted to the resolver and fix the enclosing cover 17 to the NDE cover in accordance with marks made in operation 2 4 ELECTRICAL TESTS NECESSARY BEFORE CONNECTING MOTOR TO AMPLIFIER Measure motor stator winding resistances U V V W W U These must be equal to within 3 Check dielectric strength by flash test at 1000 Vac from Phase power connector U to motor body b Phase U to thermal sensor feedback connector pins Thermal Sensor and Thermal Sensor Phase U to brake connections power connector pins B amp If flash test is not possible then check that insulation resistance is greater than 1megaohm Check dielectric strength by flash test at 500Vac or with a 500Vdc supply from motor body to Brake connections power connector pins B and Thermal sensor feedback connector pins Thermal Sensor Thermal Sensor f Resolver feedback connector pins R2 and S1 g If flash test is not possible then check that insulation resistance is greater than 1megaohm SEM motor technology SEM Limited Faraday Way Orpington Kent BR5 England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E mail info sem co uk Internet http www sem co uk 91210 Assy 40104 0422 5 2 pue 101215 reuondo 91219
18. the resolver body unless held in place by hand Remove the resolver and store in a safe place until re assembly Removal of Drive End Cover Non Brake models Do not lever between body and end covers under any circumstance Remove 4 M8 socket screws 36 Do not attempt to separate the N D E housing from the motor body at this stage Remove 4 screws 35 and separate the drive end cover from the motor body 10 and rotor shaft 1 Remove and discard the oil seal 19 and the O ring 13 note that the oil seal must be pressed out using a suitable 6 3 tool The rotor assembly is now free to be removed via the non drive end 7 but it is still attached to the N D E cover by N D E bearing 6 Removal of N D E Housing TAKE CARE The rotor itself is covered by a protective tape and before any attempt is made at further withdrawal the rotor must be properly supported and eased through the motor body so that the tape is not damaged in any way This is most important To remove rotor from N D E cover remove circlips 14 from N D E cover to release N D E bearing 6 Support the N D E cover and rotor assembly in such a way as to allow the rotor to be gently tapped or pushed out of the housing Only use a hide mallet if tapping out is necessary 6 4 Removal of D E Cover Brake Models Remove 6 screws which hold brake assembly to D E housing then follow instructions as for non brake model Para 7 When drive end cover is r
19. withdrawing them from plug 27 as in Section 3 6 Disconnection If a brake is used it must be temporarily held off during this operation by applying a 24V dc supply across the brake terminals Undo 4 screws 20 and pull back the enclosing cover 18 to give access to the resolver With the above test plug connected to the feedback connector link pins R1 to S3 amp pins R2 to S2 Connect a signal generator approx 5V 6kHz between pins R1 and R2 Connect an AC voltmeter between pins S1 and R2 At the power connector link motor phase pins V and W and then connect a low voltage dc supply to motor phases at power connector pins U ve and V W ve Adjust this voltage to give between 25 and 100 of motor rated current thereby causing the motor to turn to preferred position Slacken the 3 screws holding the resolver stator and then rotate it until the voltmeter gives a maximum reading Reconnect the AC voltmeter to pins S4 and R2 Make a small final adjustment of the resolver stator to get a minimum reading Retighten the screws disconnect the test socket the supplies the voltmeter and links let the brake if used be re applied Attach the protective shield if fitted to the resolver and fix the enclosing cover 18 to the NDE cover in accordance with marks made in operation 2 2 ELECTRICAL TESTS NECESSARY BEFORE CONNECTING MOTOR TO AMPLIFIER Measure motor stator winding resistances U V V W W U These must be equal to w
20. 1g 1 ux pug aang mas Bulxi4 4 O 21 S N 201294409 1010 19 5 9 M S Bulxi4 pr pue mas Buly pue addi Buryuelg Key xog 5 10 O 19409 Bulsojouy Aq pug 91219 Apog 100 Apog 4 Apog 2192205 Apog 10104 INN A quiessy NOILdIWOSAd 351 sued 2 2 55945149 puodo 7 SW joucudc mail info sem co uk Internet http Awww sem co uk SEM Limited Faraday Way Orpington Kent BR5 England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E SEM bans controlled motor technology servicing instructions 41 1 1 1 1 2 1 3 1 4 1 5 1 6 2 1
21. Remove processing PCB by pulling it off the 3 connectors which support it Then proceed as AC tacho WARNING Servomotors contain magnetic material which will attract metal particles Care should be taken when dismantling motors to avoid this All D C servomotors manufactured by SEM contain magnets which are air stable and can be dismantled without demagnetisation SEM Limited Faraday Way Orpington Kent BR5 3QT England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E mail info sem co uk Internet http www sem co uk UL VERSIONS AVAILABLE controlled motor technology
22. and W and then connect a low voltage dc supply to motor phases at power connector pins U ve and V W ve Adjust this voltage to give between 25 and 100 of motor rated current thereby causing the motor to turn to a preferred position Slacken the 3 screws 7 holding the resolver stator and then rotate it until he voltmeter gives a maximum reading Reconnect the AC voltmeter to pins 4 and R2 Make a small final adjustment of the resolver stator to get a minimum reading Retighten the screws disconnect the test socket the supplies the voltmeter and links let the brake if used be re applied Attach the protective shield if fitted to the resolver and fix the enclosing cover 17 to the NDE cover in accordance with marks made in operation 2 4 ELECTRICAL TESTS NECESSARY BEFORE CONNECTING MOTOR TO AMPLIFIER Measure motor stator winding resistances U V V W W U These must be equal to within 3 Check dielectric strength by flash test at 1000 Vac from a Phase U power connector pin U to motor body b Phase U to thermal sensor feedback connector pins Thermal Sensor and Thermal Sensor Phase to brake connections power connector pins amp If flash test is not possible then check that insulation resistance is greater han 1megaohm Check dielectric strength by flash test at 500Vac or with a 500Vdc supply rom motor body to d Brake connections power connector pins B and B Thermal sensor
23. and testing Contact SEM with regard to relevant servicing procedures for the particular type of encoder involved MARKING The following relationships must be marked with a marker pen or other suitable method before dismantling Drive end DE cover A to motor body B Non drive end cover D to motor body C Enclosing Cover to non drive end NDE cover Prior to resolver dismantling mark outside end faces of resolver stator 4 and resolver rotor 3 DISMANTLING THE MOTOR Remove 5 socket screws from NDE enclosing cover 17 remove the end cover and the O ring Grip the drive end of the rotor shaft 1 in a suitably protected vice and loosen the nut 2 Leave this nut finger tight until the resolver is required to be removed Note that a special tool is required available from SEM Remove the unit from the vice at this point Disconnection sequence MS Connectors option Remove 8 fixing screws and pull M S plugs 29 amp 30 clear of non drive end housing sufficiently to allow access to wires for unsoldering of existing connectors When the wires are unsoldered the M S connectors can be removed It is important to note all connections prior to unsoldering Disconnection sequence Terminal Box assembly option Remove terminal box screws 27 lid 21 and gasket 28 Unsolder all connections from M S Connector 30 and release 3 motor leads and 2 brake leads from terminal block 23 To remove the terminal b
24. body b Phase U to thermal sensor feedback connector pins Thermal Sensor and Thermal Sensor Phase U to brake connections power connector pins B amp If flash test is not possible then check that insulation resistance is greater than 1megaohm Check dielectric strength by flash test at 500Vac or with a 500Vdc supply from motor body to Brake connections power connector pins and Thermal sensor feedback connector pins Thermal Sensor Thermal Sensor f Resolver feedback connector pins R2 and S1 If flash test is not possible then check that insulation resistance is greater than 1megaohm SEM motor technology SEM Limited Faraday Way Orpington Kent BR5 England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E mail info sem co uk Internet http www sem co uk dqu 1221 WN 052 uayu OLW 0610H 06 12 YN g g vayy 21 07 59 UN O G OF SW SLL 59 u wN O S 9046 SW 26 UF 61 WY 22 OF vayb PW 04 9 21 Z Z o vosy SZW 5 111941 ANOUOL 4 022 Assy 40104 0 pue 01015 eye
25. by suitably trained and qualified personnel and only after such motors have been electrically isolated and removed from their mechanical drives The jaws of any vice or clamp must be suitably protected when used to grip any part of the motor When separating the motor end covers from the motor body care must be taken to avoid damage to their mating surfaces NOTE There are strong magnetic forces between the stator and the rotor of all SEM servomotors Fingers should be kept clear of the gaps between the stator and end covers during assembly and disassembly of the rotor Dismantled components awaiting reassembly should be kept in a safe clean and dry location Various types of encoder are used involving different procedures for dismantling reassembly connection setting up and testing Contact SEM with regard to relevant servicing procedures for the particular type of encoder involved MARKING The following relationships must be marked with a marker pen or other suitable method before dismantling Drive end DE cover A to motor body B Non drive end cover D to motor body C Enclosing Cover 17 to non drive end NDE cover 11 Prior to resolver dismantling mark outside end faces of resolver stator 4 and resolver rotor 3 DISMANTLING THE MOTOR Remove 4 M4 socket screws from NDE enclosing cover 17 remove the end cover and the O Ring Grip the drive end of the rotor shaft 1 in a suitably protected vic
26. co uk Telephone 44 99 servicing instructions 1 14 1 2 1 3 1 4 1 5 1 6 2 1 2 2 2 3 2 4 2 5 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 4 1 GENERAL Before starting work on the motor these servicing instructions should be read and fully understood Servicing of SEM motors must be done only by suitably trained and qualified personnel and only after such motors have been electrically isolated and removed from their mechanical drives The jaws of any vice or clamp must be suitably protected when used to grip any part of the motor When separating the motor end covers from the motor body care must be taken to avoid damage to their mating surfaces NOTE There are strong magnetic forces between the stator and the rotor of all SEM servomotors Fingers should be kept clear of the gaps between the stator and end covers during assembly and disassembly of the rotor Dismantled components awaiting reassembly should be kept in a safe clean and dry location Various types of encoder are used involving different procedures for dismantling reassembly connection setting up and testing Contact SEM with regard to relevant servicing procedures for the particular type of encoder involved MARKING The following relationships must be marked with a marker pen or other suitable method before dismantling Drive end DE cover A to motor body B Non drive end cover D to motor body C Enclosi
27. d from the rotor shaft after disconnection of the relevant spade connectors Then follow instructions as applicable to nonbrake motor section 3 9 RE ASSEMBLY OF MOTOR Note New circlips bearings oil seals and O ring must be fitted on reassembly as standard procedure Also ensure that all marks made in section 2 are in alignment as applicable Fit bearing 6 into N D E housing Fit D E Bearing 15 onto rotor 1 Supporting inner race of N D E bearing press rotor assembly back into N D E housing fit circlip 40 Fit new O ring 13 Carefully re insert assembled rotor and N D E housing through the motor body at the same time feeding connection wires through the crescent shape hole in the N D E housing taking care not to trap wires or to damage the protective tape on the rotor when completing this assembly Tighten screws using correct torque see torque table Refit brake when fitted and fit bearing 15 reconnect spade connectors Refit drive end housing 12 with wave washer 2 16 and O ring 13 in position Refit screws and tighten to correct torque see torque table Fit oil seal 19 Refit Resolver Slide Resolver body into non drive end of rotor shaft and screw into N D E housing using screw 7 and clamps 8 Refit resolver rotor 3 fit new nut 2 and tighten to correct torque see torque table gripping drive end of rotor shah in a suitably protected vice as para 3 Re assemble M S connectors
28. ds at the same time Press the pins firmly into the back of the connectors until they click into place Position the connectors and gaskets and tighten down with screws and washers Fit O ring bearing and circlip to D E cover slide rotor into cover bearing assembly Slide bearing onto N D E of shaft Supporting the inner race of the bearing press both bearings into place Fit spacer and tolerance ring to N D E Fit circlip at D E Carefully stand motor upright with N D E down Locate the wave washer in the N D E housing lower the rotor cover assembly very carefully into the body and screw the D E cover to the body Support and press into position resolver rotor Fit a new tolerance ring 2 Fit brake carefully press rotor into brake ensuring that teeth line up correctly Fit rotor to body as above but connect and isolate 2 brake leads before pushing into place RESETTING THE RESOLVER This only applies to a standard resolver supplied by SEM with the standard setting For any other resolver refer to the drive manufacturer For these procedures it is necessary to make connections and links to feedback connector pins To avoid damage to these pins it is advisable to make such connections and links via a suitable separate test socket which mates with the feedback connector multi pin plug 27 and which has short leads connected to its sockets Alternatively appropriate pins can be made available for connections and links by
29. e and loosen the nut 2 Leave this nut finger tight until the resolver is required to be removed Note that a special tool is required contact SEM for details Remove the unit from the vice at this point Disconnection sequence MS Connectors option Remove 8 fixing screws and pull M S plugs 29 amp 30 clear of non drive end housing sufficiently to allow access to wires for unsoldering of existing connectors When the wires are unsoldered the M S connectors can be removed It is important to note all connections prior to unsoldering Disconnection sequence Terminal Box assembly option Remove terminal box screws 27 lid 21 and gasket 28 Unsolder all connections from M S Connector 30 and release 3 motor leads and 2 brake leads from terminal block 23 To remove the terminal box 20 from the non drive end housing remove screw and nut 25 amp 26 Removal of Resolver Important At all stages of removal and reassembly the resolver unit must be handled with care See Para 14 Unscrew 7 amp 8 and release resolver body 4 complete Remove nut 2 noting that at this point the resolver rotor 3 is free and will drop out of the resolver body unless held in place by hand Remove the resolver and store in a safe place until re assembly Removal of Drive End Cover Non Brake models do not lever between body and end covers under any circumstance Remove 4 M5 screws 36 Do not attempt to separate the N D E h
30. e protective shield if fitted to the resolver and fix the enclosing cover 18 to the NDE cover in accordance with marks made in operation 2 3 ELECTRICAL TESTS NECESSARY BEFORE CONNECTING MOTOR TO AMPLIFIER Measure motor stator winding resistances U V V W W U These must be equal to within 3 Check dielectric strength by flash test at 1000 Vac from Phase U power connector U to motor body b Phase U to thermal sensor feedback connector pins Thermal Sensor and Thermal Sensor Phase U to brake connections power connector pins B amp If flash test is not possible then check that insulation resistance is greater than 1megaohm Check dielectric strength by flash test at 500Vac or with a 500Vdc supply from motor body to Brake connections power connector pins B and Thermal sensor feedback connector pins Thermal Sensor Thermal Sensor f Resolver feedback connector pins R2 and S1 If flash test is not possible then check that insulation resistance is greater than 1megaohm SEM motor technology SEM Limited Faraday Way Orpington Kent BR5 England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E mail info sem co uk Internet http www sem co uk MAINS 4 punds 109 SIN
31. e to make such connections and links via a suitable separate test socket which mates with the feedback connector multi pin plug 30 and which has short leads connected to its sockets Alternatively appropriate pins can be made available for connections and links by withdrawing them from plug 30 as in Section 3 3 amp 3 4 Disconnection If a brake is used it must be temporarily held off during this operation by applying a 24V dc supply across the brake terminals Undo 4 screws 37 and pull back the enclosing cover 17 to give access to the resolver With the above test plug connected to the feedback connector link pins R1 to S3 amp pins R2 to S2 Connect a signal generator approx 5V 6kHz between pins R1 and R2 Connect an AC voltmeter between pins S1 and R2 At the power connector link motor phase pins V and W and then connect a low voltage dc supply to motor phases at power connector pins U ve and V W ve Adjust this voltage to give between 25 and 100 of motor rated current thereby causing the motor to turn to preferred position Slacken the 3 screws holding the resolver stator and then rotate it until the voltmeter gives a maximum reading Reconnect the AC voltmeter to pins S4 and R2 Make a small final adjustment of the resolver stator to get a minimum reading Retighten the screws disconnect the test socket the supplies the voltmeter and links let the brake if used be re applied Attach the protective shield
32. elevant servicing procedures for the particular type of encoder involved MARKING The following relationships must be marked with a marker pen or other suitable method before dismantling Drive end DE cover A to motor body B Non drive end cover D to motor body C Enclosing Cover 18 to non drive end NDE cover 17 Prior to resolver dismantling mark outside end faces of resolver stator 4 and resolver rotor 3 DISMANTLING THE MOTOR Remove 4 M4 socket screws from N D E enclosing cover 18 remove the end cover and the gasket Remove 8 screws 21 from D E cover 12 For Sagem resolver this must be removed prior to dismantling of the motor proceed as per instructions for tacho removal for any other manufacturer check with SEM for instructions Withdraw D E cover with complete attached assembly of rotor 1 bearings 10 amp 8 resolver rotor 3 and spacer 5 Remove circlip 11 and press out rotor shaft to separate from D E housing Remove circlip 9 and remove bearing from D E housing To remove resolver rotor 3 use bearing extractor tool behind the shoulder on spacer 5 the bearing can then be withdrawn Handle the resolver assembly with great care at all times Before removing N D E go through the disconnection sequence Disconnection sequence PINREMOVAL TOOL REQUIRED available from SEM Ltd Both connectors 23 amp 27 must be removed before N D E cover can be removed Take out 4
33. emoved the brake assembly 38 and bearing 15 are left on the rotor shaft 1 After removing circlip 41 the bearing itself can only be removed by use of a suitable tool This will leave the brake assembly free to be removed from the rotor shaft after disconnection of the relevant spade connectors Then follow instructions as applicable to nonbrake motor section 3 7 RE ASSEMBLY OF MOTOR Note New circlips bearings oil seals and O ring must be fitted on re assembly as standard procedure Also ensure that all marks made under section 2 are in alignment as applicable Fit bearing 6 into N D E housing Fit D E Bearing 15 onto rotor 1 Supporting inner race of N D E bearing press rotor assembly back into N D E housing fit circlip 40 Fit new O ring 13 Carefully re insert assembled rotor and N D E housing through the motor body at the same time feeding connection wires through the crescent shape hole in the N D E housing taking care not to trap wires or to damage the protective tape on the rotor when completing this assembly Tighten screws using correct torque see torque table Refit brake when fitted and fit bearing 15 reconnect spade connectors Refit drive end housing 12 with wave washer 16 and O ring 13 in position Refit screws and tighten to correct orque see torque table Fit oil seal 19 Refit Resolver Slide Resolver body into non drive end of rotor shaft and screw into N D E
34. hen the wires are unsoldered the M S connectors can be removed It is important to note all connections prior to unsoldering Disconnection sequence Terminal Box assembly option Remove terminal box screws 27 lid 21 and gasket 28 Unsolder all connections from M S Connector 30 and release 3 motor leads and 2 brake leads from terminal block 23 To remove the terminal box 20 from the non drive end housing remove screw and nut 25 amp 26 Removal of Resolver Important At all stages of removal and re assembly the resolver unit must be handled with care See Para 14 Unscrew 7 amp 8 and release resolver body 4 complete Remove nut 2 noting that at this point the resolver rotor 3 is free and will drop out of the resolver body unless held in place by hand Remove the resolver and store in a safe place until re assembly Removal of Drive End Cover Non Brake models Do not lever between body and end covers under any circumstance Remove 4 M5 socket screws 36 Do not attempt to separate the N D E housing from the motor body at this stage Remove 4 screws 35 and separate the drive end cover from the motor body 10 and rotor shaft 1 Remove and discard the oil seal 19 and the O ring 13 note that the oil seal must be pressed out using a suitable tool The rotor assembly is now free to be removed via the non drive end but it is still attached to the N D E cover by N D E bearing 6 Removal of N
35. hese pins it is advisable to make such connections and links via a suitable separate test socket which mates with the feedback connector multi pin plug 27 and which has short leads connected to its sockets Alternatively appropriate pins can be made available for connections and links by withdrawing them from plug 27 as in Section 3 6 Disconnection If a brake is used it must be temporarily held off during this operation by applying a 24V dc supply across the brake terminals Undo 4 screws 20 and pull back the enclosing cover 18 to give access to the resolver With the above test plug connected to the feedback connector link pins R1 to S3 amp pins R2 to S2 Connect a signal generator approx 5V 6kHz between pins R1 and R2 Connect an AC voltmeter between pins S1 and R2 At the power connector link motor phase pins V and W and then connect a low voltage dc supply to motor phases at power connector pins U ve and V W ve Adjust this voltage to give between 25 and 100 of motor rated current thereby causing the motor to turn to preferred position Slacken the 3 screws holding the resolver stator and then rotate it until the voltmeter gives a maximum reading Reconnect the AC voltmeter to pins S4 and R2 Make a small final adjustment of the resolver stator to get a minimum reading Retighten the screws disconnect the test socket the supplies the voltmeter and links let the brake if used be re applied Attach th
36. ithin 3 Check dielectric strength by flash test at 1000 Vac from Phase power connector U to motor body b Phase U to thermal sensor feedback connector pins Thermal Sensor and Thermal Sensor Phase U to brake connections power connector pins B amp If flash test is not possible then check that insulation resistance is greater than 1megaohm Check dielectric strength by flash test at 500Vac or with a 500Vdc supply from motor body to Brake connections power connector pins B and Thermal sensor feedback connector pins Thermal Sensor Thermal Sensor f Resolver feedback connector pins R2 and S1 If flash test is not possible then check that insulation resistance is greater than 1megaohm SEM motor technology SEM Limited Faraday Way Orpington Kent BR5 England Telephone 44 0 1689 884700 Fax 44 0 1689 884884 E mail info sem co uk Internet http www sem co uk MAINS Buds 109 EN 1 4SEM YIN 1 4SEM peay dey maios 4 yoysey Jo o uu0D yoysey 10 98uU0D SN yoysey Jo o uu0D yoysey S N Bulxi4 19409 3 1 19409 F A N
37. motor Re assembly 6 Replace the stator fit tacho rotor and PCB in the correct position The screws that clamp the stator to PCB must not be over tightened this causes the PCB to distort Use a suitable Loctite or similar screw lock adhesive to prevent screws from loosening 7 Refit rotor noting original position and using a power supply to position motor rotor as during removal Lock rotor with clamp nut and tighten using correct torque See torque tables 8 Refit stator rotor and PCB Assembly Refit screw aligning position of PCB relative to the end housing Reset tacho using appropriate electrical device REMOVAL OF DC TACHO 1 Remove cable from processing PCB 2 Remove processing PCB by pulling it off the 3 connectors which support it Then proceed as AC tacho REMOVAL OF AC TACHO Instructions common to HD 92 HR 92 HD 115 HR 115 HD 142 HR 142 BMR 190 HD 190 Extreme care to be taken during the removal and re assembly of the Tacho 1 Mark the relationship of PCB to the end housing 11 Insert a strip or tube of non magnetic material e g card or plastic in the air gap between stator and rotor to prevent demagnetising the rotor and damaging the windings ROTOR MUST BE PROTECTED FROM CONTACT WITH ANY FERROUS METAL TO PREVENT DEMAGNETISATION 2 Unplug cables from the PCB and remove the 3 screws holding the PCD to the end housing Carefully remove the PCB and stator assembly 3 To mark the posi
38. ng Cover 18 to non drive end NDE cover 17 Prior to resolver dismantling mark outside end faces of resolver stator 4 and resolver rotor 3 DISMANTLING THE MOTOR Remove 4 M4 socket screws from N D E enclosing cover 18 remove the end cover and the gasket Remove 8 screws 21 from D E cover 12 For Sagem resolver this must be removed prior to dismantling of the motor proceed as per instructions for tacho removal for any other manufacturer check with SEM for instructions Withdraw D E cover with complete attached assembly of rotor 1 bearings 10 amp 8 resolver rotor 3 and spacer 5 Remove circlip 11 and press out rotor shaft to separate from D E housing Remove circlip 9 and remove bearing from D E housing To remove resolver rotor 3 use bearing extractor tool behind the shoulder on spacer 5 the bearing can then be withdrawn Handle the resolver assembly with great care at all times Before removing N D E go through the disconnection sequence Disconnection sequence PINREMOVAL TOOL REQUIRED available from SEM Ltd Both connectors 23 amp 27 must be removed before N D E cover can be removed Take out 4 screws pull the socket forward to allow access to connector pins Withdraw the connector pins using the pin removal tool Pull wires through from feedback connector 23 to clear screw access remove 4 screws 20 from N D E cover Withdraw the cover carefully to avoid damage to wiring
39. ntling mark outside end faces of resolver stator 4 and resolver rotor 3 DISMANTLING THE MOTOR 5 5 Remove M5 socket screws from NDE enclosing cover 17 remove the end cover and the O Ring 5 6 Grip the drive end of the rotor shaft 1 in a suitably protected vice and loosen the nut 2 Leave this nut finger tight until the resolver is required to be removed Note that a special tool is required available from SEM Remove the unit from the vice at this point 57 Disconnection sequence MS Connectors option Remove 8 fixing screws and pull M S plugs 29 amp 30 clear of non drive end housing sufficiently to allow access to wires for unsoldering of existing connectors When the wires are unsoldered the M S connectors can be removed It is important to note all connections prior to unsoldering 6 Disconnection sequence Terminal Box assembly option Remove terminal box screws 27 lid 21 and gasket 28 Unsolder all connections from M S Connector 30 and release 3 motor leads and 2 brake leads from terminal block 23 To remove the terminal box 20 from the non drive end housing remove screw and nut 25 amp 26 Removal of Resolver Important At all stages of removal and reassembly 6 1 the resolver unit must be handled with care See Para 14 Unscrew 7 amp 8 and release resolver body 4 complete Remove nut 2 noting that at this 6 2 point the resolver rotor 3 is free and will drop out of
40. or terminal box assembly as applicable in reverse sequence to paras 3 3 amp 3 4 RESETTING THE RESOLVER This only applies to a standard resolver supplied by SEM with the standard setting For any other resolver refer to the drive manufacturer For these procedures it is necessary to make connections and links to feedback connector pins To avoid damage to these pins it is advisable to make such connections and links via a suitable separate test socket which mates with the feedback connector multi pin plug 30 and which has short leads connected to its sockets Alternatively appropriate pins can be made available for connections and links by withdrawing them from plug 30 as in Section 3 3 and 3 4 Disconnection If a brake is used it must be temporarily held off during this operation by applying a 24V dc supply across the brake terminals Undo 4 screws 37 and pull back the enclosing cover 17 to give access to the resolver With the above test plug connected to the feedback connector link pins R1 to S3 amp pins R2 to S2 Connect a signal generator approx 5V 6kHz between pins R1 and R2 Connect an AC voltmeter between pins S1 and R2 At the power connector link motor phase pins V and W and then connect a low voltage dc supply to motor phases at power connector pins U ve and V W ve Adjust this voltage to give between 25 and 100 of motor rated current thereby causing the motor to turn to preferred position
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42. ousing from the motor body at this stage Remove 4 screws 35 and separate the drive end cover from the motor body 10 and rotor shaft 1 Remove and discard the oil seal 19 and the O ring 13 note that the oil seal must be pressed out using a suitable tool The rotor assembly is now free to be removed via the non drive end but it is still attached to the N D E cover by N D E bearing 6 Removal of N D E Housing TAKE CARE The rotor itself is covered by a protective tape and before any attempt is made at further withdrawal the rotor must be properly supported and eased through the motor body so that the tape is not damaged in any way This is most important To remove rotor from N D E cover remove circlips 14 from N D E cover to release N D E bearing 6 Support the N D E cover and rotor assembly in such a way as to allow the rotor to be gently tapped or pushed out of the housing Only use a hide mallet it tapping out is necessary Removal of D E Cover Brake Models Remove 3 screws which hold brake assembly to D E housing then follow instructions as for non brake model section 3 8 When drive end cover is removed the brake assembly 38 and bearing 15 are left on the rotor shaft 1 4 2 4 3 5 2 5 3 5 4 5 5 5 6 5 7 6 1 6 2 6 3 6 4 After removing circlip 41 the bearing itself can only be removed by use of a suitable tool This will leave the brake assembly free to be remove
43. ox 20 from the non drive end housing remove screw and nut 25 amp 26 Removal of Resolver Important At all stages of removal and reassembly the resolver unit must be handled with care See Para 14 Unscrew 7 amp 8 and release resolver body 4 complete Remove nut 2 noting that at this point the resolver rotor 3 is free and will drop out of the resolver body unless held in place by hand Remove the resolver and store in a safe place until re assembly Removal of Drive End Cover Non Brake models do not lever between body and end covers under any circumstance Remove 4 8 socket screws 36 Do not attempt to separate the N D E housing from the motor body at this stage Remove 4 screws 35 and separate the drive end cover from the motor body 10 and rotor shaft 1 Remove and discard the oil seal 19 and the O ring 13 note that the oil seal must be pressed out using a suitable tool The rotor assembly is now free to be removed via the non drive end but it is still attached to the N D E cover by N D E bearing 6 Removal of N D E Housing TAKE CARE The rotor itself is covered by a protective tape and before any attempt is made at further withdrawal the rotor must be properly supported and eased through the motor body so that the tape is not damaged in any way This is most important To remove rotor from N D E cover remove circlips 14 from N D E cover to release N D E bearing 6 Support the N D E
44. ring this operation by applying a 24V dc supply across the brake terminals Undo 4 screws 37 and pull back the enclosing cover 17 to give access to the resolver With the above test plug connected to the feedback connector link pins R1 to S3 amp pins R2 to S2 Connect a signal generator approx 5V 6kHz between pins R1 and R2 Connect an AC voltmeter between pins S1 and R2 At the power connector link motor phase pins V and W then connect a low voltage dc supply to motor phases at power connector pins U ve and V W ve Adjust this voltage to give between 25 and 100 of motor rated current thereby causing the motor to turn to preferred position Slacken the 3 screws 7 holding the resolver stator and then rotate it until the voltmeter gives a maximum reading Reconnect the AC voltmeter to pins S4 and R2 Make a small final adjustment of the resolver stator to get a minimum reading Retighten the screws disconnect the test socket the supplies the voltmeter and links let the brake if used be re applied Attach the protective shield if itted to the resolver and fix the enclosing cover 17 to the NDE cover in accordance with marks made in operation 2 4 ELECTRICAL TESTS NECESSARY BEFORE CONNECTING MOTOR TO AMPLIFIER Measure motor stator winding resistances U V V W W U These must be equal to within 3 Check dielectric strength by flash test at 1000 Vac from Phase power connector to motor
45. screws pull the socket forward to allow access to connector pins Withdraw the connector pins using the pin removal tool Pull wires through from feedback connector 23 to clear screw access remove 4 screws 20 from N D E cover Withdraw the cover carefully to avoid damage to wiring Removal of resolver Important At all stages of removal and reassembly the resolver unit must be handled with care Unscrew 36 and release resolver body 4 complete At this point the resolver rotor 3 is free and will drop out of the resolver body unless held in place by hand Remove the resolver and store in a safe place until re assembly Removal of cover Brake Models Remove 8 cover screws 21 then 3 screws 19 holding brake assembly This allows cover to be removed leaving the brake and bearing on the shaft and exposing the leads to the brake Disconnect these leads and remove complete rotor assembly as Section 3 4 Pull the bearing off the shaft leaving brake free to be removed When this sequence is complete continue as Section 3 4 above RE ASSEMBLY OF THE MOTOR To fit N D E cover to body Note new circlips oil seals and bearings must be fitted on the re assembly as standard procedure Feed the thermal overload leads through the hole in the N D E cover feed the earth lead through the hole in the body and fit 4 cap head 4 2 4 3 44 4 5 4 6 4 7 4 8 5 1 5 2 5 3 5 4 5 5 5 6 5 7 6 1 6
46. tion of rotor connect a D C power supply to motor terminals U ve and V ve adjust the voltage to give a current between 25 and 100 of the motor rated current The rotor will move to a preferred position If motor has a brake it must be released to allow this to happen Then mark position of tacho rotor relative to the end housing 4 STRONGLY RECOMMEND THAT CUSTOMERS DO NOT REMOVE THE STATOR FROM THE PCB However if the Stator has to be removed proceed as follows To remove the stator from the PCB mark position of stator relative to PCB unscrew the screws holding the PCB to stator and separate NOTE IT IS RECOMMENDED THAT IF ANY PARTS OF THE TACHO ARE TO BE REPLACED THE COMPLETE MOTOR BE RETURNED TO SEM FOR IN HOUSE REPAIR Re assembly 5 Replace the stator on PCB if it was removed in the correct position The screws that clamp the stator to PCB must not be over tightened this causes the PCB to distort Use a suitable Loctite or similar screw lock adhesive to prevent screws from loosening 6 Refit rotor noting original position and using a power supply as para 3 to position motor rotor as during removal Lock rotor with clamp nut and tighten using correct torque See torque tables 7 Refit stator and PCB assembly protecting rotor from contact with stator as during removal Refit screw aligning position of PCB relative to the end housing REMOVAL OF DC TACHO 1 Remove cable from processing PCB 2
47. tive tape on the rotor when completing this assembly Tighten screws using correct torque see torque table Refit brake when fitted and fit bearing 15 reconnect spade connectors Refit drive end housing 12 with wave washer 16 and O ring 13 in position Refit screws and tighten to correct torque see torque table Fit oil seal 19 Refit Resolver Slide Resolver body into non drive end of rotor shaft and screw into N D E housing using screw 7 and clamps 8 Refit resolver rotor 3 refit nut 2 and tighten to correct torque see torque table gripping drive end of rotor shaft in a suitably protected vice as para 3 Re assemble M S connectors or terminal box assembly as applicable in reverse sequence to paras 4 amp 5 RESETTING THE RESOLVER This only applies to a standard resolver supplied by SEM with the standard setting For any other resolver refer to the drive manufacturer For these procedures it is necessary to make connections and links to feedback connector pins To avoid damage to these pins it is advisable to make such connections and links via a suitable separate test socket which mates with the feedback connector multi pin plug 30 and which has short leads connected to its sockets Alternatively appropriate pins can be made available for connections and links by withdrawing them from plug 30 as in Section 3 2 amp 3 3 Disconnection If a brake is used it must be temporarily held off du
48. tor and the rotor of all SEM servomotors Fingers should be kept clear of the gaps between the stator and end covers during assembly and disassembly of the rotor Dismantled components awaiting reassembly should be kept in a safe clean and dry location Various types of encoder are used involving different procedures for dismantling reassembly connection setting up and testing Contact SEM with regard to relevant servicing procedures for the particular type of encoder involved MARKING The following relationships must be marked with a marker pen or other suitable method before dismantling Drive end DE cover A to motor body B Non drive end cover D to motor body C Enclosing Cover 17 to non drive end NDE cover 11 Prior to resolver dismantling mark outside end faces of resolver stator 4 and resolver rotor 3 DISMANTLING THE MOTOR Remove 5 socket screws from NDE enclosing cover 17 remove the end cover and the O Ring Grip the drive end of the rotor shaft 11 in a suitably protected vice and loosen the nut 12 Leave this nut finger tight until the resolver is required to be removed Note that a special tool is required available from SEM Remove the unit from the vice at this point Disconnection sequence MS Connectors option Remove 8 fixing screws and pull M S plugs 29 amp 30 clear of non drive end housing sufficiently to allow access to wires for unsoldering of existing connectors W
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