Mechanical Safety Limit Switches; Mounting The Drive Motor - THOMSON WH40 Instructions De Montage

Mounting a linear drive unit
4.1.2

Mechanical safety limit switches

Mechanical safety limit switches must be used if the failure of the electric drive to
switch off could endanger persons.
On size WH 40, the mechanical safety limit switches must be attached by the user!
The drive must not be commissioned before all limit switches are attached and
correctly adjusted!
Determining the end position
The switching flag must have opened the limit switch just before the sliding carriage reaches
the safety zone.
Sizes WH 50, WH 80 and WH 120
The mechanical safety limit switches are installed in the groove of the aluminium profile
receiving the KAO-strip, drilled and screwed to the profile. It causes difficulties to
subsequently adjust the limit switches. Therefore it is important to determine the limit switch
position very carefully.
Fastening of the limit switches:
1. Fig. 5: Screw socket cap screws DIN 912 to retaining angle (1).
2. Screw retaining angle to limit switch (3) by using socket cap screws DIN 912.
4.2

Mounting the drive motor

The electrical installation and the checking of the direction of rotation may only be
carried out by a licensed electrician.
Before mounting the drive, check the direction of rotation of the linear unit and the operation
of the safety limit switches. To do this, proceed as follows:
Connect the motor in compliance with the electrotechnical regulations.
1. Fig. 6 and 7: Place the motor (1) in mounting position beside the linear drive unit.
2. Switch on the motor and check the direction of rotation in association with the safety limit
switches (if necessary, change the direction of rotation by connecting the motor
differently).
3. Attach the coupling half (4) to the shaft of the linear drive unit (see chapter 10.1 "
Fastening torques ").
4. Attach the motor adapter flange (5) to the fixed bearing housing (6) with four screws.
5. Push the toothed wheel (3) onto the coupling half on the linear drive unit.
6. Mount the second coupling half (2) on the drive shaft of the motor (see chapter 10.1 "
Fastening torques ").
7. Attach the motor with the coupling half to the motor adapter flange (5) with four screws.
Ensure that no axial pressure is exerted on the motor shaft.
8. If necessary, correct the distance between the two coupling halves.
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