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Studen t Guide HS-50 A dvanced I 06/200 2 Edition 9 Con veyor System 19 NO TE The l ifting table motors are prefitted w ith cable and conne c tor (di ff erent ar ticle num bers , de pend- ing o n plac ement area 1-4). 9 …

06/2002 Edition Student Guide HS-50 Advanced I

9 Conveyor System

9.5.3 Lifting table motor unit

DANGER 

Comply with the safety instructions. 9

9.5.3.1 Removing the Lifting Table Motor / Sprocket Wheel

➠ Remove the lifting table.

Fig. 9.5.2 Removing the LiftingTable Motor and / or the Lifting Table Proximity Switch

Key

A) Fold the transmission lever up

1) Motor mount 2) Proximity switch "lifting table down"

3) Proximity switch "lifting table up 4) Screws fastening the proximity switch :

2 hexagonal socket head cap screws M3 x

5) Reinforcement plate for proximity switch 6) Fasteners for clamping flange:

6 hexagonal socket head cap screws

M4x12

7) Clamping flange 8) Annular spring

9) Cam body 10) Sprocket wheel with lead tapes

Student Guide HS-50 Advanced I 06/2002 Edition

9 Conveyor System

NOTE

The lifting table motors are prefitted with cable and connector (different article numbers, depend-

ing on placement area 1-4). 9

➠ Undo and remove the six M4 hexagonal socket head cap screws on the clamping flange . Re-

move the annular spring under the clamping flange.

➠ Label the allocation of the proximity switch for "lifting table up" and "lifting table down" .

➠ Remove the 2 proximity switches from the motor mount (two M3 hexagonal socket head cap

screws), , and take off the "reinforcement plate for proximity switch" in the process.

Set the proximity switch down on the mounting plate.

➠ Fold up the transmission lever on the motor mount.

➠ Undo and remove the 2 hexagonal socket head cap screws on the sprocket wheel .

Be careful with the washers underneath and remove the sprocket wheel incl. cam body.

➠ Lift off the cover of the pertinent cable duct which is parallel to the conveyor assembly.

➠ Carefully (!) remove the corresponding cable ties.

➠ In the cable duct, disconnect the plug-and-socket connection of the lifting table motor which is

to be removed (X70 / X71 / X72 / X73: see circuit diagram for "Power supply for lifting table

motors 1 - 4").

NOTE:

If you discovered a break in the lifting table cable during a continuity test, the cable to the power

supply unit must be run on a weaving course and disconnected at the corresponding connector

X5 / X 6 / X7 / X8 (see above-mentioned circuit diagram).

You may wish to contact Siemens SMD Service regarding this work. 9

➠ Undo and remove the screws fastening the motor to the motor mount (four M5 hexagonal

socket head cap screws) and pull the lifting table motor out.

9.5.3.2 Installing the Lifting Table Motor / Sprocket Wheel

➠ Install the new lifting table motor and the (new) sprocket weel in the reverse order to that de-

scribed for the removal.

The pin in the sprocket wheel secures the sprocket wheel in the correct position.

11) Screws fastening the "sprocket wheel with

lead tapes": 2 hexagonal socket head cap

screws M 3 x 30 with 2 adjusting shims

12) Motor moiunt: 4 hexagonal socket head

cap screws M5 x 12

13) Transmission lever 14) Motor for lifting table 1, 2, 3 or 4

06/2002 Edition Student Guide HS-50 Advanced I

9 Conveyor System

CAUTION 

When several lifting table motors are being removed/installed at the same time, check that the

plug-and-socket connections in the cable duct are allocated correctly (see the circuit diagram

:Power supply for lifting table motors 1 - 4"). The strain on the plug-and-socket connections must

be relieved after the cable ties are attached. 9

➠ Remove all tools, etc., form the working area of the machine.

➠ Fold the transmission lever on the lifting table motor down .

➠ Install the lifting table plate as described in .

➠ Carry out the pertinent "Final steps including the function check".