ThyssenKrupp Drive DAB530, Operating Manual

Page: 45 / 86

O
PERATING MANUAL
DAB530
M
AINTENANCE
/
SERVICE
ThyssenKrupp Aufzugswerke GmbH
2. CSA version
There are two sets of identical brake test switches with the same function to
monitor each brake circuit separately.
The switches each contain a break contact and a make contact.
The break contact
with contacts 11 and 12 is used to monitor the position of
the brake shoe. With the brake open, the switch is closed.
The make contact
closes contacts 23 / 24 only when the wear limit of the
brake linings has been reached and the brake is closed. The contacts must
be switched in such a way that when one contact of both switches closes the
drive is prevented from starting up.
With a correctly set brake test switch, all switch contacts must be interrupted
with a closed brake.
Setting:
Note:
Before starting to set the test switch, the brake shoe stroke must have
been set. For description, see Chapter 7.5
During the setting up procedures, the drive must be switched off for safety
reasons.

Connect the continuity test device to contacts 11 and 12 of the break
contact. The adjusting screw must not touch the control tappet.

With the drive in its home position (brake magnet without current),
unscrew the adjusting screw for the brake test from the brake shoe in the
direction of the control tappet until opening of the contact is indicated by a
signal interruption at the continuity test device. (
≙ 0.44 mm)

Continue unscrewing the adjusting screw a further approx. 1/4 revolution.

Secure this setting by tightening the lock nut.

Repeat the setting procedure at the second brake test switch.
Checking setting:
Open and close the brakes by switching the motor. Observe whether the
switch at the contacts corresponds to the procedure described above.
Push the feeler gauge between the adjusting screw and control tappet.
Select the thickness of the feeler so that contact 23/24 is closed.
When one of the contacts is closed, it must no longer be possible to start up
the drive.
12
23
24
11
Brake test switch
in the CSA version
Fig. 7.7.2
45 Version 03/2017