OPERATING MANUAL TW63 SPECIAL VERSIONS
ThyssenKrupp Aufzugswerke GmbH
8. Special versions (optional)
8.1 Brake monitoring circuit
The brake monitoring circuit checks the brake blocks.
It prevents motor movements when the brake is partially or fully closed. It
enables detection of any brake lining wear at an early stage.
Switches (sensors) are used to check whether the brake blocks are closed,
open, or worn. The travel signal - derived from the W/W1 contactor - is used
for the evaluation.
Display is by means of LEDs on the sensors, on the brake monitoring in the
control cabinet, and by deactivation of the drive. If a Teleservice device is
connected, the fault is shown on the display.
Ins
tallation:
1. If not included in the scope of delivery, make two cables (0.3*0.75 mm²
with PVC jacket) for direct connection of the sensors to the control system
and connect them.
2. The hexagon screws (microencapsulated) with lock nut that are to be
adjusted are pre-assembled on the brake blocks at the plant . The switch
tappet on the sensor must be opposite the setting screw, but should not
make contact with it.
Setting:
Before starting to set the sensor; the stroke of the brake blocks must be
adjusted! For description, see chapter 7
3. Switch on the emergency operation switch and elevator control system.
4. Adjust the setting screw for the switch until the LED lights up.
5. Slowly turn the screw back until the LED goes out.
6. Adjust the setting screw by ¼ revolution (corresponds to around 0.3 mm)
towards the switch and tighten the nut.
LED lights up continuously.
7. Activate the motor to open and close the brakes, checking as you do so
that there is a switch change at the sensors between opened and closed
brake.
Sensor 1
Sensor 2
black B2
brown 24V
black B1
blue 0 V
blue 0 V
brown 24V
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