OPERATING MANUAL NBS PRODUCT DESCRIPTION
ThyssenKrupp Aufzugswerke GmbH
2.3.2 Manual release with installation without power
To manually release the NBS emergency brake, the brake release screws
specifically designed for the purpose (screw head marked red) and their
washers are to be fully screwed into the brake housing. An illustration and
important notes for each drive type can be found in chapter 2.6
NB: the release screws are to be removed from the brake housing before
reconnection of the elevator. A safety circuit means that it is not possible to
move the elevator car with motor drive with a manual released NBS
emergency brake.
2.3.3 Bridging the safety switches for test and adjustment work NB:
intervention in the control system of the elevator system described below
means that essential parts of the safety monitoring are put out of operation.
While this setting is made, no persons may be transported. Bridging the
safety switches is exclusively intended for adjustment and testing purposes,
for example a safety gear test. After completion of the measures, the secure
operating mode is to be established.
The connection terminals in the control unit of the NBS emergency brake are
to be bridged according to installation plan / wiring diagram / drawing.
Emergency bridging to shut down the NBS control system in special cases.
Overall view, see chapter 3.5
After intervention in the control system, the drive can be operated in switch
position "Open" in the unsecured state with opened emergency brake. No
transport of persons with the safety device bridged or brake release
screws mounted!
See also warnings on the NBS control unit!
IMPORTANT INFORMATION
The
"EN81-A3-conform" designation (see illustration) only applies to each of the
type-approved components that are marked! The component is part of the protection
device in accordance with DIN EN81-1 chapter 9.11 or DIN EN81-2 chapter 9.13.
The "EN81-A3-conform" designation is not valid for the entire elevator
system!
In the case of frequency converters with the "EN81-A3-conform" designation, there
is the possibility to integrate an internal speed monitoring system (not type-
approved) for the overall system.
Fig.: "EN81-A3-conform" designation
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