WITTUR WSG-25 User manual

WSG-25
No part of this publication may be reproduced
or translated, even in part, without prior written
permission from WITTUR.
Subject to change without notice!
Nachdruck, Übersetzung und Vervielfältigung in
jeglicher Form - auch auszugsweise - bedürfen der
schriftlichen Genehmigung von WITTUR.
Änderungen vorbehalten!
[e-mail]
www.wittur.com
© Copyright WITTUR 2019
www.wittur.com
GEARLESS LIFT MACHINE
Code GM.8.002673.EN
Version 0.13a
Date 07. May 2019
OPERATING INSTRUCTIONS
Translation of the Original Operating Instructions

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 2
Offenburger Str. 3
D-01189 Dresden
Germany
Tel.: [phone]
Fax: [phone]
[e-mail]
www.wittur-edrives.de
These operating instructions are
applicable to lift machines:
WSG - 25.1- ......
WSG - 25.2- ......
date: 07. May 2019 version: 0.13a
WITTUR Electric Drives GmbH reserves the right to correct
or change the contents of this manual and these product
details without prior notice. We expressly reserve the right
to make technical changes which improve the lift machines
or their safety standards without prior notice. No liability
can be accepted for damage, injuries or expense arising
therefrom. We cannot guarantee the correctness and
completeness of the details.
Document history
Date Version Modications
30. Apr 2019 0.13 Complete revision; supplement of individual check of brake functionality; installation of the remote control by
Bowden cable for old and new systems
07. May 2019 0.13a Several minor bug xes

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 3
Contents
1. General information 4
1.1. About this operating manual 4
1.2. Intended use 4
1.3. Scope of delivery 4
1.4. Warranty and liability 4
2. Safety 5
2.1. General safety instructions 5
2.1.1. Qualied personnel 5
2.1.2. Format of the safety instructions 5
2.2. Safety precautions 5
3. EU Declaration of Conformity 6
4. Handling 7
4.1. Transport and storage 7
4.2. Storage 7
4.3. Disposal 7
5. Product overview 8
5.1. Product description 8
5.2. Permissible ambient conditions 9
5.3. Motor design 9
5.3.1. Insulation system 9
5.3.2. Motor connection / Winding protection / Fan 10
5.3.3. Speed/Position measuring system 11
5.3.4. Brake 12
5.5. Type code 15
6. Installation 16
6.1. Mechanical installation 16
6.2. Electrical installations 17
6.3. Overview 17
7. Commissioning and operating 18
7.1. Important notes 18
7.2. Emergency evacuation 19
7.3. Testing the brake system to EN 81 20
7.4. Trouble shooting 21
8. Maintenance 22
8.1. General 22
8.2. Maintenance intervals 22
8.3. Regreasing the bearings 23
8.4. Fan lter mats 24
8.5. Individual check of the brake function 25
8.6. Replacing the measuring system 26
9. Technical data 27
10. Dimension drawing WSG-25.1/2 with traction sheave dia. 530 mm 28
11. Dimension drawing WSG-25.1/2 with traction sheave dia. 650 mm 29
12. Accessories 30
12.1. Connecting cable for measuring systems for ECN 1313 and ERN 1387 30
12.2. Cable set for motor and brake 31
12.3. Rope clamp 31
12.4. Remote brake control by Bowden cable 32
12.4.1.Installation for new systems 32
12.4.2.Installation when retrotting systems 34
12.5. Return motion device 36
13. Spare parts 38
14. Annex 39
Calculation of the traction sheave shaft WSG-25 39
EU type-examination Certicate EU-BD 908 41
Brake operating instructions 47

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 4
1. General information
1.1. About this operating manual
The purpose of this operating manual is to ensure that any work on WSG-25 lift machines is carried out safely. Please
regard it as part of the product and keep it within easy reach.
All persons working on or with WSG-25 lift machines must have read and understood this operating manual.
1.2. Intended use
WSG-25 lift machines are intended for use as gearless drives for rope lifts and they must never be connected directly to
the mains supply. They may only be used for their intended purpose and with all safety devices in proper working order.
WSG-25 lift machines are intended for use in an enclosed, lockable operating area to which only qualied personnel and
personnel authorised by the customer have access.
WSG-25 lift machines may only be operated under the conditions described in this manual and with due regard to their
performance limits.
WSG-25 lift machines are not ready-to-use products; they may only be operated after they have been installed in lift
systems and their safe operation has been ensured by taking the appropriate measures.
1.3. Scope of delivery
The WSG-25 lift machines are customised to meet individual requirements. The exact scope of delivery can be found in
the accompanying documentation.
1.4. Warranty and liability
Our „Conditions of Sale and Delivery“ shall apply for all our supplies and services.
Any warranty claims must be made immediately upon discovery of the deciency or defect.
We do not accept any warranty or liability claims for personal injury or property damage resulting from one or more of the
following causes:
•Improper use of the WSG-25 lift machine
•Improper installation, commissioning, operation or maintenance
•Operation of the WSG-25 with defective and/or inoperative safety or protective devices
•Non-compliance with the instructions contained in the operating manual or other documentation supplied
•Unauthorised construction modications to the WSG-25
•Insufcient monitoring of parts subject to wear
•Repairs carried out improperly
•Emergencies caused by external forces or force majeure.

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 5
2. Safety
2.1. General safety instructions
2.1.1. Qualied personnel
Only qualied personnel are authorised to perform any planning, installation or maintenance work, and this must be done
in accordance with the relevant instructions. The personnel must be trained for the job and must be familiar with the
installation, assembly, commissioning and operation of the product.
2.1.2. Format of the safety instructions
The safety instructions contained in this operating manual are presented in a standardised format.
They comprise a danger symbol + signal word + instruction text. The danger symbol indicates the type of danger, the
signal word species the severity of the danger, and the instruction text describes the danger and explains how to avoid it.
Danger symbols
GEFAHR
Risk of electric shock
ACHTUNG
Property damage
WARNUNG
General danger
Hinweis
Information
Signal words
•DANGER Serious injuries or death will result.
•WARNING Serious injuries or death may result.
•CAUTION Minor to moderate injuries may result.
•NOTICE Property damage may result.
•Information Points out useful information.
2.2. Safety precautions
•Check the proper functioning of the motor and the brake after installing the machine.
•Repairs may only be carried out by the manufacturer or an authorised repair agency. Unauthorised opening and
tampering may result in injuries to persons and property.
•The machines are not designed for direct connection to the three-phase system but are to be operated via an
electronic frequency inverter. Direct connection to the mains may damage the motor beyond repair.
•High surface temperatures may occur on the external parts of the machine. Therefore, no temperature-sensitive parts
may be in contact with these parts or attached to them. Protection against accidental contact should be provided, if
required.
•The EU type-examined fail-safe brakes provided are designed only for a limited number of emergency braking
operations. They must not be used as working brakes.
•If the motor is not energised, no torque is produced. This may result in uncontrolled acceleration of the lift, if the
brakes are released. Therefore, the motor winding should be short-circuited to produce a speed-dependent braking
torque while the motor is not supplied with current. (Use the main contacts for short-circuiting as rated motor current
may be owing.) The motor must never be short-circuited while it is energised.
•High voltages are present at the terminal connections during the operation of synchronous motors.

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 6
3. EU Declaration of Conformity

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 7
4. Handling
4.1. Transport and storage
•Climate class: 2K3 according EN 60721
•Transport temperature: -20°C bis +60°C, max. 20 K/hour uctuated
•Transport air humidity: max. relative humidity 85 % at 20°C (no moisture condensation)
•The lift machines leave the factory in perfect condition after being tested. Make a visual check for any external
damage immediately upon their arrival on site. If any damage is found to have occurred in transit, make a notice of
claim in the presence of the carrier. If appropriate, do not put these machines into operation.
•Observe the relevant safety regulations and take the centre of gravity into account when handling the lift machines.
•Do not expose the motor to any shocks or impact.
•Check that the eyebolts are tightly tted before using them and use only suitable lifting equipment.
WARNING
fThe eyebolts are designed for the specied machine weight, i.e. additional loads must not be applied. Danger of
breakage!
4.2. Storage
•Climate class: 2K3 nach EN 60721
•Storage temperature: -20°C to +60°C, max. 20 K/hour uctuated
•Storage air humidity: max. relative humidity 85 % at 20°C (no moisture condensation)
•Store the motors only in closed, dry, dust-free, well-ventilated and vibration-free rooms. Do not store lift machines in
the open air. Bright parts are not sufciently preserved to withstand extended periods of exposure.
NOTICE
fAvoid excessive storage periods (recommendation: max. one year).
fAfter prolonged storage (>3 months), rotate the motor in both directions at a low speed (< 20 min-1) to allow the
grease to distribute evenly in the bearings. The ropes must not be tted.
•Measure the insulation resistance before initial operation of the machine. If the value has dropped below 1 kΩ per volt
of rated voltage, the winding needs to be dried (insulation meter voltage: 1,000 V DC).
Unpacking
•Dispose of the packaging material in an environmentally friendly manner or reuse it.
•Any special transport aids or shipping braces are left with the customer.
4.3. Disposal
•The lift machines consist of different materials. A waste separation of those different material components has to be
done.
•The disposal must be professional and environmentally friendly according to law.

Subject to changes without notice ! Änderungen vorbehalten !
1 2 345 6 87 9 10 11 12 13 14 15 16
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 8
5. Product overview
5.1. Product description
The compact gearless WSG-25 synchronous lift machines are designed for traction sheave lifts. They are distinguished
by their high efciency, extremely low noise and excellent operating characteristics. The machines can be supplied for
several rated speeds.
The machine comprises a frame, the synchronous motor, the traction sheave, and the type-tested safety brakes, which
can be used to prevent uncontrolled upward movement of the car.
The nameplate of the lift machine is on the motor frame.
Type code of lift machine
Rated voltage
Rated frequency
Year and month of production
Serial no.
Rated speed
Rated torque
Weight
Item Part WSG-25
1 Bolts (2 x) DIN 933 - M 16 x 30
2 Washer (2 x) DIN 125-A17
3 Bolt DIN 933 - M 24 x 75
4 Lock washer NL 24-DIN 25201
5 Rope slip-off guard
6 Pressure disc
7 Rope slip-off guard (2 x)
8 Bolts (12 x) DIN 912-M20x90-12.9
9 Traction sheave
10 Brake hub
11 Brake BFK 466-61
12 Frame
13 Brake terminal box
14 Motor terminal box
15 Measuring system
16 Protective cover

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 9
5.2. Permissible ambient conditions
•Ambient temperature: -5°C to +40°C
•Air humidity: max. relative humidity: 85% at 20°C (no moisture condensation)
•Install the machine so that ventilation is not obstruct and sufcient heat dissipation by convection and radiation must
be ensured.
Deviating ambient conditions
At higher temperatures or altitudes, the overload capability of the motors is reduced. In the case of a deviating altitude
and/or temperature, the reduction factors k shown in the following diagrams must be used.
30 40 50 60
0,6
0,7
0,8
0,9
1,0
tA [°C]
kϑ
0 1000 2000 3000 4000
0,6
0,7
0,8
0,9
1,0
h
[m]
k
a
Mpermiss = MdN * kϑ * kabzw. Ppermiss = PdN * kϑ * ka
5.3. Motor design
5.3.1. Insulation system
•All insulation materials used corresponds to the thermal class 155(F).
•The insulation system of the motors is designed such that they can be connected to a inverter with a maximum DC
link voltage Ulink max up to max. 700 V DC.
Information
fUlink max is the maximum value of the DC link voltage which is only transient and approximately equivalent to the
inception voltage of the braking chopper or of the energy recovery unit.
NOTICE
fThe maximum permissible rate of voltage rise (dU/dt) at the motor terminals is 4 kV/µs. The overvoltage at the
motor terminals must not exceed 1.56 kV. It may be necessary to use motor current lters or reactors to achieve
these values.

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 10
5.3.2. Motor connection / Winding protection / Fan
•The electrical connection of the motor, the fan and the winding sensors is made in the motor terminal box on the
machine.
•The motor cable must be shielded. Ensure that the cable shield contacts the frame over a large area at both ends.
•The motor phases U1, V1 and W1 must be connected correctly to the corresponding phases of the inverter; they must
not be interchanged.
•We recommend using a inverter with a switching frequency of 8 kHz.
•The thermocouples installed in the winding such as PTC thermistor detectors and thermostatic switches must be
evaluated in the control system or frequency inverter to protect the motor from overtemperature.
•The separately driven fan must be properly connected and operated. If required, it can be switched in dependence of
the temperature by means of thermal switch S4 (relay must be used).
M
3~
U1 V1 W1
PE
T1
T3
T2
T4
S1
S3
S2
S4
L
N
υυυ
υυυ
υ
M10
M
(Z)
Separately driven fan
D2E 146 AZ03
PTC Thermistor T
3 x STM-150.ES... (150°C)
- embedded in motor winding
- for motor protection Thermostatic switch S 1
3 x S01.130.05... (130°C)
(250 V AC / 2,5 A / cos φ = 1)
- embedded in motor winding
- pre-warning overtemperature
Thermostatic switch S 4
1 x S01.60.05... (60°C)
(250 V AC / 2,5 A / cos φ = 1)
- embedded in motor winding
- e.g. for fan control
Terminal studs
M 10 (max. tightening
torque: 10 Nm)
M20x1,5 M50x1,5
U1 V1 W1
M20x1,5
Terminal strip for fan and winding protection connections
WAGO 260
cable cross section ... 1,5 mm2
stripping length required: 8 - 9 mm

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 11
PTC thermistors
•The maximum operating voltage of the PTC thermistors is not allowed to exceed 25 V DC
•To achieve the maximum precision, the measurement voltage per PTC thermistor must not exceed 2.5 V DC.
Short-circuiting the motor terminals
•The motor terminals of the synchronous lift machines, type WSG-25, can be short-circuited, if required, to brake the lift
machine faster.
•However, this is only permissible at speeds less than or equal to the rated speed of the respective motor.
5.3.3. Speed/Position measuring system
•The basic version of the lift machines is equipped with an ECN 1313 SineCosine encoder with EnDat- interface from
Heidenhain GmbH. The encoder is connected via a 17-pole signal plug connector.
•Alternatively, the machines can be equipped with ERN 1387 encoders (from Heidenhain GmbH). We can also provide
other measuring systems on request.
•Use a shielded cable to connect the measuring system to the inverter system. We recommend the use of our cable
sets, which can be supplied as an accessory.
NOTICE
fThe measuring system of WSG lift machines with a synchronous motor (WSG) is matched to the associated
inverter. Do not change the adjustment, as this may make it impossible to use the motor. On the measuring system
housing there is a label showing the „offset angle“ and the inverter type.
fThe offset angle depends on the inverter used.
Measuring system ECN 1313 Measuring system ECN 1387
Data interface: EnDat or SSI Data interface: Z1 track
Operating voltage: 5 V DC Operating voltage: 5 V DC
Recommended mating connector: ASTA 035 NN 00 73 0100 00
(company Intercontec GmbH)
Recommended mating connector: ASTA 035 NN 00 73 0100 00
(company Intercontec GmbH)
Pin Signal
1 UpSensor
11
5
6
7
13
9
8
10 16 17
15 14
12 2
1
4
3
4 0 V Sensor
7 Up
8 Clock +
9 Clock -
10 0 V (Up)
12 B +
13 B -
14 DATA +
15 A + Pin contacts of anged connector
socket (exterior)
16 A -
17 DATA -
Pin Signal
1 A +
11
5
6
7
13
9
8
10 16 17
15 14
12 2
1
4
3
2 A -
3 R +
4 D -
5 C +
6 C -
7 0 V (Up)
10 Up
11 B +
12 B -
Pin contacts of anged connector
socket (exterior)
13 R -
14 D +
15 0 V Sensor
16 UpSensor

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 12
5.3.4. Brake
•Please refer also to the operating instructions for the brake starting on page 47.
•The brakes are supplied with DC voltage by the brake control units, which are tted in the brake terminal box.
•Only the brake control units which are included in our scope of supply are to be used for the brake activation.
•Repeated switching of the brake magnets during the overexcitation period must be avoided as this will result in
overloading of the brake control unit. Therefore, a minimum brake operating time of approx. 1.5 – 2 s should be
maintained, especially during an inspection or commissioning drive.
•To reduce the switch-off time, switching can be effected from the DC side. However, switching must also be performed
from the AC side at the same time ! (Wiring with a varistor as shown in the „Circuitry suggestion for brake control“ on
page 14)
•The brakes must be protected with varistors against overvoltage from switching operations. The varistor must be
directly connected to the coil.
Note on the use of DC/AC side switching
Information
fAC side switching is recommended for normal operation, since the lift machine is then decelerated in a controlled
manner to zero speed and the switching noise of the brake is negligible.
fWhen braking in the event of a breakdown (emergency stop) or during an inspection drive, the switching should
be performed from the DC side, since this ensures a faster braking effect with the car being stopped earlier. We
therefore recommend the use of 2 separate contactors for the brake control circuitry, one of which switches at the
DC side, the other at the AC side.
AC side switching DC side switching
fLow-noise switching of the brake
fNo protective measures required for switching
contact
fSlow application of the brake.
fNoisy switching
fBurn-up protection for switching contact required (e.g.
varistor, free-wheeling diode)
fFast application of the brake.
~
+
-
Br ~
+
-
Br
Attention: Schematic diagram! Attention: Schematic diagram!
Monitoring the brakes
•The switching states of the brakes and the wear of the brake linings are monitored by means of dust-proof
microswitches (see wiring diagram).
•Please assure that the contact-current is at least 10 mA to keep the contacts clean.
NOTICE
fThe microswitches must be evaluated separately for each partial brake to ensure compliance with the
requirements of the type examination.
fIf the wear monitoring is to be evaluated as well, the connection must be made via terminals _e and _ö (normally
closed contact of the release monitoring).

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 13
Connection of the brakes
The brake coils, the brake control units and the monitoring contacts are connected to the mains in the brake terminal box.
3s 3e 3ö 2ö2s 1s 1e 1ö2e
3s 3e 3ö 2s 2e 2ö 1s 1e 1ö
3s
3ö
3e
2s
2ö
2e
1s
1ö
1e
Terminal strip for brake monitoring contacts
WAGO 260
cable cross section ... 1,5 mm2
stripping length required: 8 - 9 mm
black
grey blue
black
grey blue
black
grey blue
black
grey blue
black
grey blue
black
grey blue
not applicable with two brakes
screw plugs 3 x M 20
wear
monitoring
release
monitoring
Switching states of the monitoring switches
brake released brakes
lining worn
electrical circuit
between _ö and _e
electrical circuit
between _s and _e
no
no closed open
yes no open closed
no yes open open
yes yes open closed

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Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 14
Circuitry suggestion for brake control
WSG-25
230 V ±10%
40...60 Hz
6 -
5 +
4 3
2 ~ 1 ~
intorq
BEG-561...
K1
{
K1
intorq
BEG-561...
6 -
5 +
4 3
2 ~ 1 ~
1ö 1s
u
S10 K275
u
S10 K275
K2
1e
1ö 1s 1e
{
Overexcitation rectifier
Circuitry suggestion for brake control
1st. Partial brake
release/wear
to control cabinet
DC side switching and separate control of the partial brakes
to the 2nd. partial brake
K1 and K2 must switch simultaneously
AC side switching and separate control of the partial brakes
to the 2nd. partial brake
Brake magnet
Brake monitoring
black blue
black blue
grey
black blue
grey
wear release
1st. Partial brake
release/wear
to control cabinet
Brake magnet
Brake monitoring
black blue
black blue
grey
black blue
grey
wear release
to the 3rd. partial brake
to the 3rd. partial brake

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Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 15
5.5. Type code
Example: W S G- 25 .2-0 0 23 /6 5 A -Z F
Customer specic identier W S G- Z1 Z2 . Z3 - X1 X2 X3 X4 / X5 X6 X7 - X8 X9
S: Synchronous motor
G = gearless
U = gearless; UL-CSA approved
Z1 Z2: Frame size
Z3: Overall length
2 overall lengths are available; identied by: 1, 2
X1: Customer specic identier
X2: Motor voltage
0 - UN = 400 V / UZK = 500...620 V DC
X3 X4: Rated speed nN
z.B. 11 - 118 rpm (with DT= 650 mm v = 2,0 m/s; suspension 2:1)
21 - 216 rpm (with DT= 530 mm v = 3,0 m/s; suspension 2:1)
23 - 235 rpm (with DT= 650 mm v = 4,0 m/s; suspension 2:1)
X5 X6 X7: Traction sheave design
(Traction sheave diameter; width, groove design, groove geometry)
X8 X9: Variant code (brake, measuring system, modications)
ZE: 3 clasp brakes; measuring system ECN 1313-2048 incr. - SSI-interface
ZF: 3 clasp brakes; measuring system ECN 1313-2048 incr. - ENDAT-interface
ZG: 3 clasp brakes; measuring system ERN 1387-2048 incr.
2E: 2 clasp brakes; measuring system ECN 1313-2048 incr. - SSI-interface
2F: 2 clasp brakes; measuring system ECN 1313-2048 incr. - ENDAT-interface

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 16
6. Installation
6.1. Mechanical installation
Setting up
DANGER
fBe sure to use calculations to check the base frame or foundation loads before installing the lift machine.
fThe lift machines must be installed by trained and qualied personnel with professional knowledge of mechanical
engineering and lift construction.
•The machines can be used in lift systems with a machine room.
•The permissible unevenness of the mounting surface is 0.3 mm. The mounting surface must be sufciently distortion-
resistant and stable to accommodate the forces occurring in the system.
•The rope force can be applied to the lift machine in any direction.
•The machine must be mounted on vibration dampers for vibration damping.
•No welding work may be performed on the lift machine, nor is it permissible to use the machine as a mass point for
welding work. This might cause irreparable damage to the bearings and magnets.
•If there are more grooves on the traction sheave than the number of ropes used, position the ropes either in the centre
of the traction sheave or towards the motor end.
ok
ok

ok
ok

ok
ok

•The measuring system is only accessible from the rear side. Therefore, leave enough space between the wall and the
rear side of the machine or ensure that the machine can be moved away from the wall.
WARNING
fCover the machine and especially the brakes when doing any machining or dust-producing work in the shaft or
machine room.
Securing the machine
•Fasten the machine using 8 M 36 bolts - strength class 8.8 tightening torque: 2,360 Nm .
•After completing the adjusting work or after a breakdown, tighten all the fastening bolts of the machine, using the
specied torque .
•Lift machines are generally equipped with rope slip-off guards. After putting the ropes in place, adjust them so that the
distance between the rope and the rope slip-off guard does not exceed 2 to 3 mm.
•If the lift machine is not installed at the head of the machine room as is usually the case, it may be necessary to
modify the tting of the rope slip-off guard to fulll the requirements of EN 81-20 . Optional rope slip-off guards are
available for this purpose.
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Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 17
6.2. Electrical installations
DANGER
fThe electrical installation may only be carried out by trained and qualied personnel with professional knowledge
of electrical engineering.
•Before starting any work on the machines, ensure that the lift machine or system is properly isolated.
•Before making any electrical connections check that:
»the connecting cables are suitable for their specic application and for the relevant voltages and currents
»sufciently dimensioned connecting cables, torsion, strain and shear relief, as well as anti-kink protection are
provided
»the protective conductor is connected to the earthing terminal
»there are no foreign bodies, dirt or moisture in the terminal boxes
»cable entries not in use and the terminal box itself are tightly sealed to prevent the ingress of dust or splashing
water.
6.3. Overview
The following notes should help you to carry out the assembly and wiring in an appropriate sequence, without
overlooking anything.
Site Please note the intended use and the permissible ambient conditions of the machine. The site
must be free of conductive and aggressive material.
Ventilation Install the machine so that ventilation is not obstructed, i.e. sufcient heat dissipation by
convection and radiation must be ensured.
Assembly Be aware of the secure motor fastening and die proper use of vibration dampers.
Cable selection Select cables and wire cross section in according to the binding regulations and law.
Earthing / Shielding
Use correct earthing of machine and machine frame and that all components are installed
in accordance with EMC requirements. Important notes can be found on the manual of the
inverter manufacturer.
Wiring
We recommend the use of our cable sets, which can be supplied as an accessory.
Route power cables as separately as possible from control cables.
- Connect the motor leads
- Connect the measurement system and
- Connect the safety brake, the brake control units and the brake monitoring switches
- Connect the fan
Check Final check of the installed wiring, according to the wiring diagram which was used.

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 18
7. Commissioning and operating
7.1. Important notes
DANGER
fThe commissioning may only be carried out by trained and qualied personnel with professional knowledge of
electrical engineering and lift construction.
fCheck that all live connection points are safe against accidental contact.
fDuring commissioning, unintentional movements of the traction sheave may occur. Make sure that, even if the
motor starts to move unintentionally, no danger can result for personnel or machinery.
Before starting up the motor the following points must be checked:
•Check that all performance and application data specied on the name plate of the machine are consistent
with your application.
•Have all securing, auxiliary and installation tools been removed from the danger area?
•Check if the lift machine is being used for its intended purpose – comply with the permissible ambient
conditions.
•Check if the lift machine has been properly fastened with the fastening bolts – have all the bolts been
tightened to the specied torque and secured?
•Has the motor been properly connected, including the motor protection? Has the PE terminal been properly
connected? Is the potential equalisation with the machine frame ensured?
•Check the proper functioning of the temperature monitoring devices (e.g. by interrupting the temperature
monitoring circuit).
•Has the measuring system been properly connected?
•Check the brake connection and the proper functioning of the brake monitoring switches.
•Ensure that the brake operates correctly; perform a brake test using one partial brake.
•Has the rope slip-off guard been tightly fastened and properly adjusted?
Information
fAn initial function test of the motor and the brake, together with the inverter, should be performed before the ropes
are put in place.
fIf the motors are being operated at no shaft load (no ropes put in place) for an extended period of time, abnormal
noise may occur resulting from the bearing type used.
Half-load test
Information
fIf the motor winding is short-circuited with the control system deactivated, a speed-dependent braking torque will
be produced, even at low speeds. Therefore, the short-circuiting should be deactivated during the half-load test. It
is imperative for it to be reactivated after the test.

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 19
7.2. Emergency evacuation
DANGER
fAll actions for evacuation in case of emergency have to be done by qualied service personnel.
fWhen attempting an evacuation, the car may not move even when the brakes are released, as a result of load
compensation between the car and the counterweight. In this case, add weight to the car by suitable means, e.g.
sand bags, or use the mechanical return motion device.
Manually operated evacuation in case of emergency
•The brakes (3) can be released remotely by hand
using a lever block (1) and Bowden cables (2).
•The installation and operation of this device is
described in section 12.4. “Remote brake control
by Bowden cable”. The lever block and the Bowden
cables are available separately.
•If the brakes are released manually, the lift car
moves in the direction of the higher weight.
•The motor winding should be short-circuited using
the motor contactors. This prevents the lift from
accelerating in an uncontrolled manner, since
the short-circuiting produces a speed-dependent
braking torque.
•It may transpire that the braking torque provided by
short-circuiting the motor is insufcient to restrict
the speed of the lift. You should therefore keep a
close eye on the car speed during evacuation and
halt the evacuation if necessary.
1
2
3
4
6
5
Remote brake control
by Bowden cable
•Stop the manual release of the brake when the car has reached the next oor. The trapped passengers can now be
evacuated.
WARNING
fAfter releasing the brakes manually, check that
the manual release levers (4) return to their initial
position. 4 6 2
Initial position Brake released
(Rear side
of brake)
Emergency evacuation by electrical means
•Alternatively, the brakes can be released electrically in an emergency, using the mains or a UPS.
•When resorting to this method of emergency evacuation, refer to the relevant instructions in the operating manual
regarding the control system, the inverter and the evacuation unit (with UPS).

Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date: 07. May 2019
Version: 0.13a
Page: 20
Mechanical return motion device
•For cases such as lift failure or the car being retained by the safety device, a mechanical return motion device can be
used to move the lift manually. Use of the return motion device is shown in the drawing.
•Instructions for installing and using the return motion device can be found in section 12.5. „Return motion device“.
WARNING
fMake sure that you restore the lift system to its original state after completing the emergency evacuation. Take
particular care to remove the lever extensions and all parts of the mechanical return motion device.
7.3. Testing the brake system to EN 81
Information
fThe 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 sufciently during its downward 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 or by hand.
•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 microswitch signal is missing or
a wrong signal operates.