WITTUR servogearless WSG-S2.3 User manual

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 1
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
Reprinting, translation or reproduction in any form -
whether in part or in full - requires the prior written per-
mission of WITTUR Holding GmbH.
Wittur Holding GmbH reserves the right to make
changes in the information and pictures contained in
these operating instructions without prior notice.
WITTUR Holding GmbH
Rohrbachstraße 26-30 • D-85259 Wiedenzhausen, Germany
Tel. [phone] • Fax [phone]
http://www.wittur.com, E-mail: [e-mail]
58 00 000 1203 ba_wsgs2.3_e08 08.10.2013
Gearless Lift Machines
WSG-S2.3
servogearless
eco
English

These operating instructions are
applicable to lift machines:
WSG-S2.3....
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 com-
pleteness of the details.
Offenburger Str. 3
D-01189 Dresden
Germany
Tel. [phone]
Fax [phone]
[email protected]
www.wittur-edrives.de
Seite/page 2
Datum/date 08.10.2013
Stand/version 0.8
Gearless Lift Machine
WSG-S2.3
Operating Instructions
Änderungen vorbehalten! Subject to changes without notice!

Contents
Seite/page 3
Datum/date 08.10.2013
Stand/version 0.8
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 instructions.................................................................................................................................4
2.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.2. Format of the safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.3. Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3. Product description................................................................................................................................6
4. Transport and storage ...........................................................................................................................7
5. Installation...............................................................................................................................................8
5.1. Setting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5.2. Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.2.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.2.2. Motor connection / Winding protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.2.3. Speed/Position measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.2.4. Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
6. Commissioning........................................................................................................................................16
7. Operation and maintenance ................................................................................................................17
7.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7.2. Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7.3. Regreasing the bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
7.4. Replacing the traction sheave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
7.5. Emergency evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
7.6. Testing the brake system to EN81-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
7.7. Replacing the measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
7.8. Trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
8. Type code..................................................................................................................................................22
9. Technical data .........................................................................................................................................24
10. Dimension drawing ................................................................................................................................25
11. Accessories...............................................................................................................................................26
11.1. onnecting cable for measuring systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
11.2. able set for motor and brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
11.3. Brake manual release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
11.4. Rope guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
12. Spare parts...............................................................................................................................................30
Annex
EC Declaration of Conformity
Calculation of the traction sheave shaft
Traction sheave shaft
EC type-examination certificate
Type-examination certificate (acc. EN 81-1 + A3)
Brake operating instructions
Gearless Lift Machine
WSG-S2.3
Operating Instructions
Änderungen vorbehalten! Subject to changes without notice!

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 4
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
1.1. About this operating manual
The purpose of this operating manual is to ensure that any work on WSG-S2 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-S2 lift machines must have read and understood this operating manual.
1.2. Intended use
WSG-S2 lift machines are intended for use as gearless drives for rope lifts. They may only be used for their
intended purpose and with all safety devices in proper working order.
They may only be operated under the conditions described in this manual and with due regard to their perfor-
mance limits.
1.3. Scope of delivery
The WSG-S21 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 " onditions of Sale and Delivery" shall apply for all our supplies and services.
Any warranty claims must be made immediately upon discovery of the deficiency 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-S2 lift machine
• Improper installation, commissioning, operation or maintenance
• Operation of the WSG-S2 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 modifications to the WSG-S2
• Insufficient monitoring of parts subject to wear
• Repairs carried out improperly
• Emergencies caused by external forces or force majeure
1. General information
2. Safety instructions
2.1. General
WSG-S2 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.
WSG-S2 lift machines are intended for use in an enclosed, lockable machine room to which only qualified per-
sonnel and personnel authorised by the customer have access.

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 5
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
Qualified personnel
Only qualified 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.
2.2. 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 dan-
ger, the signal word specifies the severity of the danger, and the instruction text describes the danger and
explains how to avoid it.
Danger symbols
Signalworte
•DANGER Serious injuries or death will result
•WARNING Serious injuries or death may result.
•CA TION Minor to moderate injuries may result.
•NOTICE Property damage may result.
•Information Points out useful information.
2.3. Safety precautions
• heck 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 converter. 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-sensi-
tive parts may be in contact with these parts or attached to them. Protection against accidental contact
should be provided, if required.
• The E 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-depen-
dent braking torque while the motor is not supplied with current. (Use the main contacts for short-circuiting
as rated motor current may be flowing.) 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.
Risk of electric shock Property damage
General danger Information

22 34516710 11 12 13
314 15 16 17 18 19
Änderungen vorbehalten! Subject to changes without notice!
Gearless Lift Machine
WSG-S2.3
Operating Instructions
The compact gearless WSG-S2 synchronous lift machines are designed for traction sheave lifts. They are distin-
guished by their high efficiency, extremely low noise and excellent operating characteristics.
The machines can be supplied for several rated speeds, which can be further adapted to meet individual cus-
tomer requirements. The machine comprises a frame, 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 frame.
Seite/page 6
Datum/date 08.10.2013
Stand/version 0.8
3. Product description
Änderungen vorbehalten! Subject to changes without notice!
Type code of
lift machine
Rated current Rated speed
Rated torque
Serial no.
Rated frequency
Weight
Item Part WSG-S2.3
1 Bolts (2x) DIN 912 - M8x20
2 Bolts (3x) DIN 933 - M8x25-8.8
3 Lock washers (3x) NL 8-DIN 25201
4 Pressure disc
5 Traction sheave
6 Washers (2x) DIN 125 - A 8,4
7 Rope slip-off guard (2x)
10 Frame
11 Bolts (6x) DIN 912 M16x120
12 Brake BFK 464-28
13 Locking ring DIN 471 - 70x2,5
14 Plug-in shaft
15 Screws (3x) DIN 912 - M4x10
16 lamping sleeve
17 Screws (4x) DIN 912 - M6x12
18 Measuring system
19 Screw DIN 912 M5x50
Drive- ode

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 7
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice! Änderungen vorbehalten! Subject to changes without notice!
4. Transport and storage
• 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.
• heck that the eyebolts are tightly fitted before using them.
• Do not expose the motor to any shocks or impact.
Storage
• Store the motors only in closed, dry, dust-free, well-ventilated and vibration-free rooms (storage tempera-
ture: -20° to 60° ). Do not store lift machines in the open air. Bright parts are not sufficiently preserved to
withstand extended periods of exposure.
• Avoid excessive storage periods (recommendation: max. one year).
• After 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.
• Measure the insulation resistance before initial operation of the machine. If the value has dropped below
1kWper volt of rated voltage, the winding needs to be dried (insulation meter voltage: 1,000 VD ).
• This can be done, for instance, with hot air, in a drying oven, or
by applying a D voltage to the motor connections. Make sure
that the voltage selected does not exceed the values shown in
the figure "Drying the winding". Let the temperature rise to
about 70 – 80° and maintain it for several hours.
npacking
• 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.
WARNING The eyebolts are designed for the specified machine weight, i.e. additional loads must not be
applied. Danger of breakage!
u
v
w
A
I≈45% IN
-
U
Drying the winding

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 8
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
5. Installation
5.1. Setting up
• The machines can be used in lift systems with or without a machine room.
• 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.
• 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.
Ambient conditions
• The following ambient conditions must be ensured on site:
Altitud: max. 1,000 m a.s.l.
Ambient temperature: -5° – 40 °
Max. rel. humidity: 85% at 20° (no moisture condensation)
• Install the machine so that ventilation is not obstruct-
ed, i.e. sufficient heat dissipation by convection and
radiation must be ensured.
• The torque and power values indicated in the Techni-
cal Data apply to the above ambient temperatures and
altitudes. In the case of a deviating altitude and/or
temperature, the reduction factors k shown in the
diagram "Ambient conditions" must be used.
Mpermiss = k * MN
Ppermiss = k * PN
0,6
0,7
0,8
0,9
1,0
1,1
1,2
0102030405060
Ambient temperature [°C]
Factor k
Altitude < 1000 m
Altitude < 2000 m
Altitude < 3000 m
DANGER Be sure to use calculations to check the base frame or foundation loads before installing the
lift machine.
WARNING over the machine and especially the brakes when doing any machining or dust-producing
work in the shaft or machine room.
ok
ü
ok
ü
When using the machine in a shaft, please take into account the patent situation.

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 9
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
5.2. Electrical connection
5.2.1. General
• 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 specific application and for the relevant voltages and currents.
• sufficiently 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 box
• cable entries not in use and the terminal box itself are tightly sealed to prevent the ingress of dust or splash-
ing water.
Securing the machine
• The rope force can be applied to the lift machine in any direction.
• The machine should be mounted on rubber pads for vibration damping.
• Fasten the machine using bolts
- 4 x M24 bolts (strength class 8.8; tightening torque: 680 Nm) in case of using the threaded holes or
- 6 x M24 bolts (strength class 8.8; tightening torque: 680 Nm) in case of using the mounting holes
• After completing the adjusting work or after a breakdown, tighten all the fastening bolts of the machine,
using the specified torque.
• The permissible uneveness of the mounting surface is 0.1mm. The mounting surface must be sufficiently dis-
tortion-resistant and stable to accommodate the forces occurring in the system.
• 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 1.5 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 fitting of the rope slip-off guard. Optional rope slip-off guards installed in the foot area of
the machine are available for this purpose.
CA TION The insulation system of the motors is designed such that they can be connected to a con-
verter with a maximum D link voltage Ulink max up to max. 700VD .
Ulink max is the maximum value of the D link voltage which is only transient and approxi-
mately equivalent to the inception voltage of the braking chopper or of the energy recovery
unit.
The maximum permissible rate of voltage rise (dU/dt) at the motor terminals is 4kV/ms. The
overvoltage at the motor terminals must not exceed 1.56kV. It may be necessary to use
motor current filters or reactors to achieve these values.
WARNING The electrical connection may only be made by a qualified electrician.

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 10
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
5.2.2. Motor connection / Winding protection
• The electrical connection of the motor, the brake and the winding sensors is made in the terminal box locat-
ed on the motor.
• 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 converter;
they must not be interchanged.
• We recommend using a converter with a minimum switching frequency of 12 kHz.
• The PT resistor embedded in the winding must be evaluated in an appropriate manner in the control system
or the frequency converter to protect the motor from overheating.
M
20 Kabelverschraubung
f
ü
r Kabeldurchmesser 7-12 mm
M
20 Cable gland
for cable diameter 7-12 mm
Drillingskaltleiter
Triplet PTC
Typ STM-150.DS....
Verschlussschrauben 2xM16 und 1xM
20
Screw plugs 2xM16 and 1xM
20
WAGO 262
max. Anschlussquerschnitt: ...4
mm
2
Abisolierl
ä
nge der Adern: 9-10
mm
WA
GO 262
Cable cross-section:...4
mm
2
Stripping length required: 9-10
mm
2 x M
16 Kabelverschraubung
f
ü
r Kabeldurchmesser 5-10
mm
2 x M
16 Cable gland
for cable diameter 5-10
mm
M

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 11
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
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.
PTC thermistors
The maximum operating voltage of the PT thermis-
tors is not allowed to exceed 2.5VD
3 x 4000
3 x 1330
3 x 550
3 x 250
-20°C
130°C
145°C
150°C
Widerstand / Resistance [Ω]
Temperatur
155°C
165°C
Cable cross-section required:
The currents specified under the machine data refer to duty type S3-40%. This must be taken into account
when selecting the cable cross-section required. The continuous r.m.s. value required for the selected cable is
approximated
from:
I r.m.s. (cable) »I N (motor, S3-40%) / 1,58
The table on the right gives the standard values for
the current-carrying capacity of PV cables at a
maximum ambient temperature of 40 ° :
Cable cross-
section
Permissible max.
current
(r.m.s. value)
Permissible max.
motor current IN
(S3 - 40%)
1,0 mm213,1A 20,7A
1,5 mm215,7A 24,8A
2,5 mm222,6A 35,7A
4,0 mm229,6A 46,7A

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 12
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
Measuring system ECN413 / ECN1313
Number of sine-cosine
periods per rotation: 2048
Operating voltage: 5V
Data interface: SSI oder ENDAT
Measuring system ERN 487
Number of sine-cosine
periods per rotation:: 2048
Operating voltage: 5 V
ommutation signals: 1 sine and cosine
signal with 1 per/rota
tion (Z1 track)
Pin Signal
1UpSensor
11
5
6
7
13
9
8
10 16
17
15 14
12 2
1
4
3
2 R -
3 R +
4 0 V Sensor
7Up
8D-
9D+
10 0V (Up)
11 inner shield
12 B +
13 B - Pin contacts of flanged con-
nector socket (exterior)
14 +
15 A+
16 A-
17 -
Pin Signal
1UpSensor
11
5
6
7
13
9
8
10 16
17
15 14
12 2
1
4
3
4 0V Sensor
7Up
8 lock +
9 lock -
10 0V (Up)
11 inner shield
12 B +
13 B -
14 DATA +
15 A + Pin contacts of flanged con-
nector socket (exterior)
16 A -
17 DATA -
5.2.3. Speed/Position measuring system
• The basic version of the lift machines is equipped with an E N 413 Sine osine encoder from Heidenhain
GmbH. The encoder is connected via a 17-pole signal plug connector fitted to the measuring system housing.
• Alternatively, the machines can be equipped with ERN487 encoders (also 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.
CA TION The measuring system of WSG lift machines with a
synchronous motor (WSG) is matched to the associat-
ed converter. 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" determined at the factory.
This value depends on the converter used.

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 13
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
5.2.4. Brake
• Please refer also to the operating instructions for the brake.
• The brakes are supplied with D voltage by the overexcitation rectifiers, which are supplied separately or in
the terminal box.
• Only the overexcitation rectifiers which are included in our scope of supply are to be used for the brake activation.
• The terminals for the brake coils and the monitoring contacts are provided in the motor terminal box.
• 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 – 2s
should be maintained, especially during an inspection or commissioning drive.
• To reduce the switch-off time, switching can be effected from the D side. However, switching must also be
performed from the A side at the same time)! (Wiring with a varistor as shown in the circuitry suggestion
on page 15!)
Note on the use of DC/AC side switching:
A side switching is recommended for normal operation, since the lift machine is then decelerated in a con-
trolled manner to zero speed and the switching noise of the brake is negligible.
When braking in the event of a breakdown (emergency stop) or during an inspection drive, the switching
should be performed from the D 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 D side, the other at the A side.
AC side switching
• Low-noise switching of the brake
• No protective measures required for switching con-
tact
• Slow application of the brake.
DC side switching
• Noisy switching
• Burn-up protection for switching contact required
(e.g. varistor, free-wheeling diode)
• Fast application of the brake.
~
+
-
Br
-
+
Br
~
Attention: schematic diagram! Attention: schematic diagram!

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 14
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
Monitoring the brakes
• The switching states of the brakes are monitored by means of dust-proof microswitches with gold contacts.
Both the n.c. and the n.o. contact connections are available.
Connection of the brakes
The terminals for the brake magnet, brake control unit and the monitoring contacts are available in the motor
terminal box.
WARNING The microswitches must be evaluated separately for each partial brake to ensure compliance
with the requirements of the type examination.
M
20 Kabelverschraubung
f
ü
r Kabeldurchmesser 7-12 mm
M
20 Cable gland
for cable diameter 7-12 mm
Verschlussschrauben 2xM16 und 1xM
20
Screw plugs 2xM16 and 1xM
20
WAGO 262
max. Anschlussquerschnitt: ...4
mm
2
Abisolierl
ä
nge der Adern: 9-10
mm
WA
GO 262
Cable cross-section:...4
mm
2
Stripping length required: 9-10
mm
2 x M
16 Kabelverschraubung
f
ü
r Kabeldurchmesser 5-10
mm
2 x M
16 Cable gland
for cable diameter 5-10
mm
"Lüften" 1. Teilbremse
"release" 1
st.
partial brake
C
NC
schwarz/black
grau/grey
blau/blue NO
1. Teilbremse
1
st.
partial brake
C
NC
schwarz/black
grau/grey
blau/blue NO
"Lüften" 2. Teilbremse
"release" 2
nd.
partial brake
2. Teilbremse
2
nd.
partial brake
Option: terminal box
without brake control unit

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 15
Datum/date 08.10.2013
Stand/version 0.8
Circuitry suggestion for brake control WSG-S2.3
2 x Bremsenansteuergerät
2 x Overexcitation rectifier
Motorklemmkasten
Motor terminal box
Schaltungsvorschlag Bremsenansteuerung Circuitry suggestion for brake control WSG-S2.3
230 V ±10%
40...60 Hz
6 -
5 +
4 3
2 ~ 1 ~
intorq
BEG-561...
K1
1. Teilbremse
1st. Partial brake
Bremsmagnet
Brake magnet
Lüften
release
zur Steuerung
to control cabinet
{
gleichstromseitiges Schalten der Bremse mit getrennter Ansteuerung der Tei lbremsen DC side switching and separate control of the partial brakes wechselstromseitiges Schalten der Bremse mit getrennter Ansteuerung der Tei lbremsen AC side switching and separate control of the partial brakes
zur 2. Te ilbremse
to the 2nd. partial brake
K1
1. Teilbremse
1st. Partial brake
Bremsmagnet
Brake magnet
NC NO C
zur Steuerung
to control cabinet
{
Bremsüberwachung
Brake monitoring
zur 2. Te ilbremse
to the 2nd. partial brake
schwarz / black
grau / grey blau / blue
NC NO CBremsüberwachung
Brake monitoring
schwarz / black
grau / grey blau / blue
intorq
BEG-561...
6 -
5 +
4 3
2 ~
1 ~
A1
E1
Lüften
release
C1
O1
S1
u
S10 K275
u
S10 K275
K2
K1 und K2 müssen gleichzeitig schalten.
K1 and K2 must switch simultaneously
A1
E1
C1
O1
S1
Änderungen vorbehalten! Subject to changes without notice!

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 16
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
6. Commissioning
The following points should be checked or completed:
• Remove all securing, auxiliary and installation tools from the danger area.
• heck that the lift machine is used for its intended purpose and that the permissible ambient conditions are
met.
• heck that the lift machine is properly fastened.
• Are all bolts tightened with the specified torque and secured?
• heck the motor connection, especially the earthing.
• heck that the temperature monitoring devices are properly connected and functioning.
• heck that the brakes are properly connected and that the brake monitoring switches are functioning
properly.
• Is the measuring system properly connected?
• heck that the offset value indicated on the measuring system agrees with the value set on the converter.
• heck the proper functioning of the brake; perform a braking test using one partial brake.
• Is the rope slip-off guard properly tightened and adjusted?
Half-load test
An initial function test of the motor and the brake, together with the converter, should be performed before
the ropes are put in place.
If 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.
If 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.

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 17
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
7. Operation and maintenance
7.1. General
• The regulations concerning operation, maintenance and inspection pursuant to the applicable safety
regulations for lift construction such as DIN EN81 "Safety rules for the construction and installation of lifts",
Part 1: "Electric lifts", and other relevant regulations are to be strictly observed.
• The operator is responsible for ensuring that the motor is installed properly and in accordance with the safety
requirements, as well as for its inspection and maintenance as specified in the applicable regulations.
• The proper maintenance of gearless lift machines requires adequately trained specialist personnel and special
devices and tools.
• Repairs other than those described in these operating instructions are not to be carried out by the lift fit-
ter/maintenance technician for liability reasons.
Bolt/screw tightening torques
• When performing any work on the machine or
replacing parts, make sure that the specified
bolt/screw strength class and the tightening
torques are observed (see table).
• Secure the bolts/screws with "omnifit 100" or a
similar product against accidental loosening.
7.2. Maintenance intervals
Dimension Tightening torque [Nm]
Strength class 8.8 10.9 12.9
M4 2,8 4,1 4,8
M5 5,5 8,1 9,5
M6 9,6 14 16
M8 23 34 40
M10 46 67 79
M12 79 115 135
M16 195 290 340
M20 395 560 660
M24 680 970 1150
heck the brake air gap every six months see the brake operating instructions
heck the proper functioning of the brakes and the
brake monitoring switches every six months see the brake operating instructions
heck the bearing noise every six months
Regrease the bearings see section 7.3.
heck the traction sheave for wear every six months
Make a visual check of the fasteningbolts/screws on
the frame, brake and traction sheave every six months see section 7.1.
heck the electrical cables every six months see section 5.2.
heck the rope slip-off guard every six months
heck the guards and safety devices for their condi-
tion and safe functioning every six months
lean the external machine surfaces as required

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 18
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
7.3. Regreasing the bearings
The anti-friction bearings have been provided with a grease filling at the factory that is sufficient for the
planned service life of the machine. Under normal operating conditions, regreasing is not required or
recommended.
7.4. Replacing the traction sheave
Disassembly
• Disconnect the system and safeguard against accidental
restarting.
• Secure the car and the counter-weight.
• Remove the rope slip-off guards and the rope guards, if
provided.
• Relieve the load on the traction sheave; remove the ropes.
• Support the traction sheave by means of a hoisting gear.
• Remove the three M8 bolts at the pressure disc and the
pressure disc itself.
• Insert two fastening bolts into the outer hole circle of the
pressure disc (1) and into the traction sheave.
• Insert a 4-7 mm spacer (2) between the pressure disc and
the shaft journal.
• Pull off the traction sheave from the tapered shaft seats by
tightening the bolts evenly.
Assembly
• lean the traction sheave and the motor shaft.
• Support the traction sheave by means of a hoisting gear.
• Insert the feather key into the shaft end.
• Slide the traction sheave onto the motor shaft.
• Fit the pressure disc to the traction sheave and fasten it using three pairs of NORD-LO K washers and
M8x25-8.8 bolts. Tighten the bolts alternately around the circle in three torque steps (10, 20 and 25 Nm) as
far as they will go. Tightening torque: 25 Nm
• Replace the ropes and reinstall the rope slip-off guard.
WARNING The traction sheave can work loose if it is not properly installed.

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 19
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
7.6. Testing the brake system to EN81-1
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 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. (The connections for the indi-
vidual coils are accessible in the box.)
Monitoring the brakes
• heck the brake monitoring switches individually. No car travel must be permitted if a microswitch signal is
missing or a wrong signal operates.
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.
7.5. Emergency evacuation
• The lift design engineer must always provide an electric return motion control or a manual rewinder (please
note EN 81-1/12.5.2).
• Should a failure occur with the car at rest, the car can be moved with the drive connected to the mains or, in
the case of mains failure, to an uninterruptible power supply (UPS), or mechanically under its own load with
the emergency brakes temporarily released.
• The brakes are released electrically either from the mains or using a UPS.
• If the brakes are released with the motor deenergised, the motor windings should be short-circuited. This
prevents the lift from accelerating in an uncontrolled manner, since the short-circuiting produces a speed-
dependent braking torque.
• In the special case of the car being caught by the safety device, it can be released by powering the drive from
the mains or a UPS.
• A remote manual releasing device ia available as an option.

Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page 20
Datum/date 08.10.2013
Stand/version 0.8
Änderungen vorbehalten! Subject to changes without notice!
7.7. Replacing the measuring system
The measuring system is only accessible from the rear side of the motor.
See the mounting instructions for the Heidenhain encoder.
Disassemble the measuring system only if this is necessary because of a defect. Remember to readjust the offset
value after reassembly (see the converter operating instructions).
Two options for forcing off the measuring system
a) a)
b)
b) M6x70
M5x10
M5 360°...720°
M10
Assembly
• heck for true running on the plug-in shaft.
(Permissible runout max. 0.02mm).
• lean the stud and the measuring system shaft
end; do not grease them.
1.
2.
3.
4.
SW3/4
SW4
Md=5+0,5 Nm
Md=5+0,5 Nm
SW2
Md=1,25-0,2 Nm
M5x50-8.8 DIN 6912
Multiple use, max. 3x
Disassembly
• Remove the screw plug.
• Loosen the clamping ring on the measuring
system (2mm Allen screw, shown in figure
"Assembly").
• Force off the measuring system.
Measuring
system with
clamping ring
Screw plug
Aufnahmezapfen
Stud
Mess-System
Measuring system
Spannschild
Clamping ring