Description
Product
31
TK Elevator
BA, TW45C | 6231003860 | 06/2022
Version with emergency brake - NBS
The optional version of the emergency brake (NBS) meets the requirements
for the protection device that prevents overspeed in the upward-moving elev-
ator car in accordance with EN81-1:1998 / 9.10 and/or EN81-20/5.6.6 and un-
intended elevator car movements in accordance with EN81-1:2010-06 / 9.11
(EN81-1/A3) and/or EN81-20/5.6.7).
In the ISIS1 version, the NBS emergency brake also meets the requirements in
accordance with ASME A17.1.
Alongside the operational brake, an additional braking device is fitted on the
drive shaft, consisting of the components.
▪
Type-approved electromagnetic disc brake in accordance with
▪
Driving gear in emergency brake system (NBS) version (bearing bracket
NBS, brake flange NBS for fitting the brake)
▪
Traction sheave / worm wheel shaft NBS (including components for seal-
ing)
The braking device is located on the machine side opposite the traction
sheave and directly affects the traction sheave shaft.
A certificate with respect to the calculation of the traction sheave shaft for
the TW45C machine with emergency brake system (NBS) shall be enclosed
with the technical documentation.
The emergency brake is activated via a separate control unit including ter-
minal box and connecting lines as well as an additional safety switch at the
overspeed governor (TK Elevator) to activate the facility in the event of over-
speed (not for ISIS1 version).
For the version in the machine room, the emergency brake is released manu-
ally (e.g. emergency rescue in the event of a power failure) via screws that are
screwed into the brake in the event of triggering, thus releasing the brake/
armature base plate of the disc brake. During normal operation, the screws
and a socket wrench are kept in the guard plate of the brake.
For installation of the manual release screw, a minimum distance of 100 mm
is to be set between the emergency brake and the adjoining wall of the ma-
chine room or similar.
Later fitting of the emergency brake, NBS, on existing machines is not pos-
sible.
Version for the machine location in the shaft headroom
The version of the machine for use in the shaft headroom consists of the
components:
▪
Driving gear (including oil filling) with flange mounting surface and hori-
zontal motor position
▪
Gear ratio 32:1 or 40:3; version 40:3 on installations with rope suspension
2:1 as standard
▪
Operational brake type Warner SZ50/50-2x50 Nm with separate brake
circuits that can be released electrically and 6 m cable length
▪
Motor in version EME (CEG) MT132 (5.2 kW) or EME (CEG) MT132 (7
kW); mounting with terminal box location at bottom (
,
as standard
