Siemens 1FV2 Inbetriebnahmeanweisungen Seite 15

NOTE: Before pulling off the magnet body, voltage must be applied to
the brake (24 V DC ± 10%, check for correct polarity), releasing the
brake so that the diaphragm springs are not overstressed
- Pull off the N-end bearing (6.10)
Fitting
- Apply voltage to the magnet and fit magnet to armature plate
- Fit new D-end and N-end bearings onto the motor rotor, making sure that
the D-end bearing is accommodated in the centring hole of the magnet
body
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)
- Remove the power source
- 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 the magnet body with D-end shield with screws (1.48), tighten
to specified torque (refer to Fig. 106.1) and maintain specified clearance
NOTE: Fit spring lock washer (6.22) in the N-end shield (6.20)
- Guide brake connecting leads through the slot on the outside of the
stator
- Insert the motor rotor with the D-end shield into the motor stator, guiding
the brake connecting leads to the power connector
- Secure the D-end shield to the stator;
3.6.3 Connecting the brake leads
Connector size 1
- Crimp contact pins 4 and 5 to brake connecting leads (refer to
SIMODRIVE accessories for details of crimping pliers) and fit into
insulator in accordance with the circuit diagram
- Latch insulator into position in the connector housing
- Screw on connector;
3.7 Adjustments
3.7.1 Tachogenerator + rotor position encoder
If the rotor position encoder and tachogenerator have been removed, they
will require re-adjustment.
Incorrect adjustment is indicated by untrue running (excessive torque
fluctuations) and, in extreme cases, by activation of the pos. encoder
monitoring device.
The following instructions describe the procedure for checking/
adjusting the rotor position encoder and tachogenerator
NOTE: The tachogenerator stator is permanently connected to the rotor
position encoder, so it is only necessary to adjust the rotor position
encoder.
Adjusting the rotor position encoder relative to the motor stator
winding (refer to Fig. 108)
The motor must be operated as a generator for this setting operation. This
can be achieved by briefly turning the motor shaft by hand, for example.
While the motor is being turned, one channel of a two-channel oscilloscope
(with memory if possible) is used to measure a phase-to-phase voltage
(e.g. EMF U-V, EMF = electromotive force) and the second channel used
to measure the corresponding signal (barrier S) from the rotor position
encoder. While the motor is being rotated clockwise (viewed from D-end
of the shaft), the tachogenerator stator is turned until the rotor position
encoder signal switches from low to high when the phase-to-phase
ENGLISH
voltage passes from the negative value through the zero point. The rotor
position encoder is then correctly adjusted relative to the motor stator
winding.
The assignment of the two other phase-to-phase voltages (e.g. V-W and
W-V) to the rotor position encoder signals (e.g. T and R) should then be
checked as shown in Fig. 108.
The assignment of the signals should be checked again on
completion of the adjustment operation and re-adjusted if necessary.
3.7.2 Resolver
The resolver mounting arrangement is made to customer specifications.
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