Subject to changes without notice !
Änderungen vorbehalten !
Gearless Lift Machine
WSG-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date:
28. Jan 2020
Version: 0.16
Page: 22
7.3. Testing the brake system to EN 81
Information
f
The brake system should be tested with the car about halfway down the shaft. If any motor short-circuit
connections have been made, these should be deactivated so that the brake effect can be tested independently.
Overload
•
The brake system should be tested by interrupting the power supply to the motor and brake system with the car
moving downward at rated speed and 1.25 times the rated load. The brake system must be capable of decelerating
the car.
Failure of a brake
•
If one brake fails, the brake system must still be capable of decelerating the car sufficiently during its down ward
travel at rated load and rated speed.
•
When simulating the failure of one brake, the other brakes must be kept open separately, even if the safety circuit is
open. This should be done using suitable electric circuitry.
•
This state must not be maintained in the long term!
•
Observe the lift during this test. If it does not decelerate, close the open brake circuit immediately.
Separate operation of the individual brakes
•
The only method by which the partial brakes can be released separately is through electrical control. The brakes can
be activated/deactivated quickly using individual control buttons.
Monitoring the brakes
•
Check the brake monitoring switches individually. No car travel must be permitted if a micro-switch signal is missing
or a wrong signal operates.
Summary of Contents for WSG-SF Series
Page 111: ......
