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- Grease the conical shaft and screw into position, holding the D-end of
the shaft to prevent the motor rotor from turning with the shaft
- Max. tightening torque for conical shaft: 2.9 Nm, and for the screw (X1)
: 0.5 Nm
- After refitting the conical shaft, check that the tachogenerator and rotor
position encoder are adjusted correctly and replace if necessary
- Observe max. permissible radial eccentricity and concentricity deviation
- Apply sealant (e.g. Fluid D) to sealing face D on the encoder centring
hole and screws (8.58);
3.3.2 Absolute value encoder
Removing / Fitting as for ROD426, refer to 3.3.1.
3.4 Removing/Fitting the tachogenerator
+ pos. encoder, resolver
3.4.1 Tachogenerator + rotor position encoder
Removing (refer to Fig. 104)
- Remove screws (6.48) and cover (6.25) if necessary
- Undo connector ST
- Mark the position of the tachogenerator stator relative to the endshield
(6.20)
- Undo screws (6.45) and remove tachogenerator stator
- Remove screw (6.49 - fixing tachogenerator to motor rotor) if necessary;
prevent the motor rotor from turning with it by holding the D-end of the
shaft
- Screw in a grub screw, e.g. DIN913 M4x10 (to protect centring hole in
end of shaft)
- Fit a screw e.g. DIN933 M5x30-8.8 into the tachogenerator rotor and
force the tachogenerator rotor off the motor rotor, preventing the motor
rotor from turning with it, max. tightening torque: 3 Nm
Fitting
- Push the tachogenerator rotor on until the locating pin (8.16) engages
in the slot
NOTE: Do not damage locating pin (8.16)
- Max. tightening torque for the screw (6.49): 2.5 Nm
- Tighten screw (6.45)
- Check adjustment and re-adjust if necessary
- Check max. permissible radial eccentricity of the tachogenerator rotor
- Screw down cover;
3.4.2 Resolver (8.960)
Removing (refer to Fig. 105)
- Unscrew cover (6.25)
- Mark position of resolver stator relative to non-drive end (N-end) shield
(6.20) to simplify subsequent adjustment of encoder system
- Release intermediate connector ST
- Remove nut (8.972) from motor rotor, holding the D-end of the shaft to
prevent the motor rotor from turning with it
- Remove resolver fixing screws (8.971) from N-end shield
- The resolver rotor and stator can now be pulled off by hand
Fitting
- Push the resolver rotor on until the locating pin (8.16) engages in the slot
NOTE: Do not damage locating pin (8.16)
- Screw on nut (8.972), preventing the motor rotor from turning with it,
max. tightening torque 5 Nm
- Replace resolver stator and protective cap (8.973) and secure with
screws (8.971)
- Connect up intermediate connector
- Check adjustment and re-adjust if necessary
- Screw down cover;
3.5 Removing/Fitting the motor rotor
including bearing replacement on
motors without brakes
8
ENGLISH
Removing (refer to Fig. 106.1, 106.2)
- Mark position between endshields on housing
- Undo screws (1.49) from D-end endshield (1.40)
- Carefully pull motor rotor (3.10) together with D-end shield out of the
motor stator (4.00)
NOTE: After removing the rotor, protect it from contamination from
magnetic waste (plastic bag)
- Undo screws (1.48) and remove the D-end shield
- Using a suitable tool (refer to Fig. 106.2), pull off the D-end bearing
(1.60) and sleeve (1.41), heating the sleeve to approx. 180 °C to reduce
the effect of the adhesive
- Pull off N-end bearing (6.10);
Fitting
- Fit new D-end and N-end bearings onto the motor shaft, making sure
that the D-end bearing is accommodated in the centring hole of the
bearing cover (1.44)
NOTE: We recommend that the roller bearings be heated evenly to
approx. 80-100 °C for fitting purposes. Never strike the bearings with
any force (e.g. with a hammer)
- Apply adhesive, e.g. Loctite 243, to the inside of the sleeve (1.41) and
slide onto the shaft as far as the bearing collar; the adhesive must form
a seal on motors of protection class IP 67
Refer to Fig.107 if fitting a rotary shaft seal (IP 67)
We recommend that the sleeve (1.41) is replaced on motors with rotary
shaft seals (1.42)
- Secure bearing cap with screws (1.48), tighten to specified torque (refer
to Fig. 106.1)
NOTE: Fit spring lock washer (6.22) in the N-end shield (6.20)
- Insert motor rotor with the D-end shield into the motor stator and secure
the endshield to the stator
3.6 Removing/Fitting motor rotor including
bearing replacement on motors with
brakes
NOTE: It is theoretically possible to replace or retro-fit a fail-safe brake;
however, the modification work may only be performed by a SIEMENS
Service Center.
3.6.1 Removing the brake connecting leads
Connector size 1 (refer to Fig. 106.2)
- Unscrew connector (5.57)
- Release the insulator by pressing catch V out of the connector housing,
then pull the insulator out of the housing
- Using dismantling tool (refer to SIMODRIVE accessories), press out
contact pin (5.31) Nos. 4 and 5 for brake connection
- Sever the brake connecting leads at the contacts
3.6.2 Removing/Fitting the motor rotor with D-end
and N-end bearings
Removing (refer to Fig. 106.1 and Fig. 106.2)
- Mark position between endshields on housing
- Undo screws (1.49) from D-end shield (1.40)
- Carefully pull motor rotor (3.10), together with D-end shield, out of the
motor stator (4.00), being careful not to damage brake connecting leads
NOTE: After removing the rotor, protect it from contamination from
magnetic waste (plastic bag)
- Undo screws (1.48) and remove D-end shield
- Using a suitable tool (refer to Fig. 106.2), pull off the magnet body and
brake connecting leads, together with the D-end bearing (1.60) and
sleeve (1.41), heating the sleeve to approx. 180 °C to reduce the effect
of the adhesive
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