WITTUR WSG-SF Series User manual

WSG-SF
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 2020
www.wittur.com
GEARLESS LIFT MACHINE
Code GM.8.004284.EN
Version 0.16
Date 28. Jan 2020
OPERATING INSTRUCTIONS
Translation of the Original Operating Instructions

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: 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 - SF.1- ......
WSG - SF.2- ......
WSG - SF.3- ......
WSG - SF.4- ......
WSG - SF.S- ......
date: 28. Jan 2020 version: 0.16
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
09. Aug 2019 0.14 Complete revision; new lever block for manual release
04. Sept 2019 0.15 Small corrections;
28. Jan 2020 0.16 New declaration of conformity of the brake

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: 3
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 10
5.3.3. Speed/Position measuring system 11
5.3.4. Brake 12
5.4. Rope guard 15
5.5. Type code 17
6. Installation 18
6.1. Mechanical installation 18
6.2. Electrical installations 19
6.3. Overview 19
7. Commissioning and operating 20
7.1. Important notes 20
7.2. Emergency evacuation 21
7.3. Testing the brake system to EN 81 22
7.4. Trouble shooting 23
8. Maintenance 24
8.1. General 24
8.2. Maintenance intervals 24
8.3. Regreasing the bearings 25
8.4. Check brake air gap 25
8.5. Replacing the traction sheave 26
8.6. Replacing the measuring system 27
9. Technical data 28
10. Dimension drawing 30
11. Accessories 31
11.1. Connecting cable for measuring systems for ECN 1313/
ERN 1387 31
11.2. Cable set for motor and brake 32
11.3. Brake manual release 33
11.3.1 Manual lifting rods 33
11.3.2. Brake manual release remotely controlled 33
12. Spare parts 35
13. Annex 36
Calculation of the traction sheave shaft WSG-SF 36
Traction sheave shaft WSG-SF 38
Calculation of the traction sheave shaft WSG-SF (DT=160mm) 39
EU type-examination certicate EU-BD 1051 (WSG-SF.1) 42
EU type-examination certicate EU-BD 1056 (WSG-SF.2/3) 48
EU type-examination certicate EU-BD 1034 (WSG-SF.3/4) 54
EU Declaration of Conformity brake WSG-SF 60
Brake operating instructions WSG-SF 62
Contents

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: 4
1. General information
1.1. About this operating manual
The purpose of this operating manual is to ensure that any work on WSG-SF 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-SF lift machines must have read and understood this operating manual.
1.2. Intended use
WSG-SF 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-SF 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-SF lift machines may only be operated under the conditions described in this manual and with due regard to their
performance limits.
WSG-SF 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-SF 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-SF lift machine
•Improper installation, commissioning, operation or maintenance
•Operation of the WSG-SF 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-SF
•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-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date: 28. Jan 2020
Version: 0.16
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 brake air gap exceeds the permissible value, the braking torque may be signicantly reduced.
•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-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date: 28. Jan 2020
Version: 0.16
Page: 6
3. EU Declaration of Conformity

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: 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.
•Do not expose the motor to any shocks or impact.
•Observe the relevant safety regulations and take the centre of gravity into account when handling the lift machines.
•Use only suitable transport and lifting equipment.
•Check that the eyebolt are tightly tted before using them.
If necessary, screw the eyebolt completely into the threaded hole
and tighten it only by hand.
Important! Avoid lateral pulling.
ok 
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 - every three month continuously - 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 3 6 8 9 10 11
574
Gearless Lift Machine
WSG-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date: 28. Jan 2020
Version: 0.16
Page: 8
Item. Part WSG-SF
1 Bolts (3x) DIN 4017 - M 8 x 30-10.9
2 Lock washers (3x) DIN 25201 - NL8
3 Pressure disc
4 Traction sheave
5 Rope guard
6 Bolts (2x) DIN 912 - M 8 x 20
7 Washers DIN 125 - A 8,5
8 Motor housing
9 Brake BFK 464
10 Measuring system
11 Cylinder-head screw DIN 4762 - M 5 x 55
5. Product overview
5.1. Product description
The compact gearless WSG-SF 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, which can be further adapted to meet individual customer
requirements. The machine comprises the synchronous motor, the traction sheave, and the type-tested safety brake,
which can be used to prevent uncontrolled upward movement of the car.
The nameplate of the lift machine is on the motor housing.
Type code of lift machine
Rated voltage
Rated frequency
Drive-Code
Application data
QR-Code (for download this
manual)
Year and month of production
Serial no.
Rated speed
Rated torque
cos φ
Weight

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: 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, ed, i.e. 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-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date: 28. Jan 2020
Version: 0.16
Page: 10
5.3.2. Motor connection / Winding protection
•The electrical connection of the motor and the winding sensors is made by power connector or in the terminal box.
•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 10 to 12 kHz.
•The PTC resistor embedded in the winding must be evaluated in the control system or frequency inverter to protect
the motor from overtemperature.
1. Plug connection
Signal Pin
U1 1
1
A
B
CD
2
3
4
PE 2
W1 3
V1 4
not assigned A
not assigned B
temperature
sensor CPin contacts of anged connector socket
(exterior)
temperature
sensor D
The electrical connection of the motor and
the winding temperature sensors is made
by a rotatable 8-pole power connector
provided on the motor. A type B ST A
078 FR 05 08 0035 000 connector from
“intercontec” can be used, for example, as
the female plug.
2.Terminal box
M
Screw plugs 2 x M 16 and 1 x M 25
2 x M 16 Cable gland
for cable diameter 5-10 mm
WAGO 262
cable cross-section: ... 4 mm2
stripping length required: 9-10 mm
M 25 Cable gland
for cable diameter 13-18 mm
Triplet PTC
Type STM-150.DS...
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, 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.