SKF TLG User manual

TLG/THG
Telescopic pillars
Read this manual before installing, operating
or maintaining this actuator. Failure to follow
safety precautions and instructions could
cause actuator failure and result in serious
injury, death or property damage.
Installation, operation
and maintenance manual

SKF Act uat ion Syst em (Liest al ) AG
Or i st al st r asse 9 7
CH - 4 4 1 0 Liestal
Phone +41 / 61/ 925 41 11
Fax +41/ 61 / 9 21 37 0 4
e- mail actuator [e-mail]
531e1655_0701
Technical Instructions
Telemag THG/TLG
Telescopic column DC
Content
1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.1 Using the Technical Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.2 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.3 Correct use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.4 Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 General function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.2 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3Installationandstartup ..................................................4
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3.3 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.4 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4.1 Controlling an actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5 Maintenance and care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.2 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.3 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.5 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
6 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
7 Troubleshooting and fault elimination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Reference standards:
EN 60601-1
EN 55011
UL 2601

Technical Istructions Telemag THG/ TLG
531e1655_0701 page 2/8
1 General
1.1 Using the Technical Instructions
The Technical Instructions are intended for designers or technicians who use the
Telemag telescopic actuator (referred to below as Telemag) in their products and
for fitters working with the Telemag. The Technical Instructions contain all rele-
vant information on this SKF product.
We reserve the right to make changes which are in the interest of technical
progress.
Please read the Technical Instructions carefully and, above all, pay careful atten-
tion to the Safety Instructions.
The Technical Instructions should be used for drawing up the User Manual for the
end product.
1.2 Explanation of symbols
The symbols opposite are used in the Technical Instructions to highlight possible
dangers and important notes.
1.3 Correct use
The Telemag telescopic actuators must only be used for lifting purposes. The ac-
tuators should only be subjected to compressive loads. No other usage is permit-
ted.
Conversions or modifications to the linear actuators or the electrical installation
are not permitted.
Only original spare parts and accessories from SKF may be used. The act uat or
is intended for use with a SKF control system.
The unit is only suitable for indoor use and must not be subjected to the ele-
ments.
1.4 Ambient conditions
Operation
Temperature 10 °C to 40 °C
Humidity max. 85%
Storage / transport
Temperature -20 °C to 40 °C
Humidity max. 95%
Operating mode
Intermittent 10%; 1 min ON / 9 min OFF
The actuator has been designed for intermittent operation. If a higher duty cycle
is required, cont act SKF Act uat ion Syst em (Liest al) AG.
For transport purposes, the Telemag can
be loaded with a pull force of up to 50
kg for a short period.
The Telemag telescopic actuator must not
be operated in an explosive atmosphere.
The maximum centric load specified on
the data label and the permissible eccen-
tric load specified in the transverse load
diagram must not be exceeded.
A push actuator must never be used to
pull.
The actuator may be destroyed if these in-
structions are not observed.
Where eccentric loads are involved, the
permissible maximum load decreases.
Please observe the permissible load on
the load diagram contained in the
datasheet. If an eccentric overload oc-
curs, the actuator can be damaged. The
load can tip sideways.
This symbol is used to indicate opera-
tions and states which could endanger
life and limb.
Follow the instructions precisely!
This symbol provides the user with
useful information.

Technical Istructions Telemag THG/ TLG
531e1655_0701 page 3/8
2 Function
2.1 General function
The Telemag is an electrical telescopic actuator which uses virtually play-free
guide tubes. It has been designed for holding and moving centric and eccentric
loads.
A DC motor with worm gear controls a threaded spindle via a bevel gear. A
threaded nut moves up and down on the spindle, which is secured to the push
tube and thereby generates the feed motion. The telescopic tubes are retracted
and run out depending on the direction of the motor.
The characteristics of the permanent magnet motor means that the speed is
load-dependent.
2.2 Construction
The power cable is integrated into the Telemag.
The actuator has no internal limit switches. It is protected from thermal and
electrical overload by a connected SKF control unit.
Control unit
The DC motor is fed using an external SKF control unit or a master actua-
tor. These components also determine the running direction of the actuator, de-
pending on the polarity of the DC current.
The actuator is moved via the control unit and any connected control elements.
The Telemag has extensive protection against faults. First failure safety cannot
be ensured, however, since unpredictable faults - e.g. to a control device - can
result in slow, uncontrolled movements.
The first failure safety of the overall sys-
tem must be checked in the end product
in order to rule out risks to life/limb and
property.
Protection from thermal or electrical
overload is only guaranteed if a SKF
control unit is connected.

Technical Istructions Telemag THG/ TLG
531e1655_0701 page 4/8
3Installationandstartup
3.1 Scope of delivery
The Telemag consists of:
The entire lifting column
Options
Integrated current cut-off
Encoder (Hall sensor)
Cable feedthroughs 230 V, 6 A
Potentiometer (not possible on all types)
Accessories
Handswitch
Desk switch
Footswitch
Control units
Mounting plates
Fastening screws
3.2 Installation
The Telemag can be secured to either SKF mounting plates (see 3.1 Acces-
sories) or the customer's own plates.
`Remove the transportation screws (4 pcs.)
`Fasten the mounting plates onto the aluminium tubes using the four bores
(auxiliary plates are fitted to the end faces of the outer and inner tubes).
Fig. 1 – Installation
ø8,5
ø22
ø20,5
ø8,5
ø20
screws
see table page 5
screws
see table page 5
The protective conductor in the cable
feedthrough is not connected to the actu-
ator's aluminium tubes.
Only use the screws recommended (Qual-
ity 10.9).
Observe the minimum screw-in depth
and the torque specified on the datasheet.
When using your own mounting plates,
you must ensure that the base plates are
supported over their entire surface - this
will distribute the force over the entire
area.
Otherwise, there is a risk of the base
plates fracturing.

Technical Istructions Telemag THG/ TLG
531e1655_0701 page 5/8
Any subsequent fastening bores in the aluminium tubes may only be made by
SKF.
The sides of the tubes must not be scratched, otherwise the tube guide will be
damaged. This can result in malfunctions.
3.3 Electrical connection
Fig. 2 – Connection
The supply voltage and control unit are connected via the jack plug to a SKF
cont r ol uni t or a master actuator.
Connected load: 24 V DC, 6 A; see type plate
The power cable, when plugged into the socket, is strain-relieved and sealed. The
jack plug has a bayonet lock which must be fitted correctly into the connection
socket and locked in position. To lock the jack plug, use SKF Special Key
No. 140375.
Fig. 3 – Plugging in the control cable
3.4 Start up
The Telemag is ready for operation once all mechanical and electrical installation
work has been completed correctly. The actuator is switched using the
handswitch or footswitch connected to the control unit, depending on the de-
sign.
Motor Laufrichtung
Motor direction
During installation, ensure that no ob-
jects or parts of the body are trapped be-
tween the mounting plate of the internal
tube and the outer tube during retrac-
tion. If necessary, a mechanical protec-
tion device should be installed, depend-
ing on where the device is being used.
Danger of crushing!
The power cable must be also be strain-
relieved on the object on which the actu-
ator is installed.
All cables must be secured so that no
forces act on the plugs.
Plugs which are poorly aligned may al-
low liquids to penetrate which can dam-
age the actuator.
The sealing rings of the connecting plug
must be checked for damage each time
they are connected, and should be
greased lightly with Klübersynth VR 69-
252, order no. 521023, to make installa-
tion easier.
Damaged seals must be exchanged. The
use of other gliding agents can lead to
the plastic being damaged.
Electric cables should not be exposed to
the risk of pinching, or to bending or
tensile loads.
Direct connection to a voltage supply is
not permitted, since this can cause dam-
age to the actuator.
The jack plug must be plugged right into
the opening and be locked in position
with the bayonet lock.
IImmppoorrttaanntt!!RRiisskkooffppeerrssoonnaalliinnjjuurryy!!
When the actuator is being actuated, en-
sure that physical objects or parts of the
body cannot become trapped.
If necessary, a mechanical protection de-
vice should be installed, depending on
where the device is being used.
THG TLG
Screw 4 x M6x25 4 x M10x30
Screw-in depth min. 22 mm min. 25 mm
Strength class 10.9 10.9
Tightening torque 9 Nm 40 Nm

Technical Istructions Telemag THG/ TLG
531e1655_0701 page 6/8
4 Operation
4.1 Controlling an actuator
Actuators are controlled via a suitable SKF control unit or a master actua-
tor (e.g. type Matrix MAX6).
The actuator travels for as long as the current feed lasts, or until the actuator
reaches a terminal position.
Further information can be found in the Technical Instructions for the relevant
control unit or actuator.
5 Maintenance and care
5.1 Maintenance
A Telemag has been designed for a service life of 20,000 double strokes of
length 300 mm (this applies for a maximum centric load as per the data label).
The Telemag requires no maintenance during this period.
In-house tests must be performed if other requirements relating to service life
are specified.
5.2 Care
Protection from water, cleaning, disinfecting
Degree of protection IP30 is only achieved if the device is installed correctly in
the end product.
If an actuator becomes dirty, it should be cleaned immediately in order to pre-
vent the accretion of residues on the guide tubes.
Use a damp cloth and water with a little isopropyl alcohol for manual cleaning.
Washing water with chemical additives must be pH-neutral. Excessively acidic or
alkaline washing water can permanently damage the metal and plastic compo-
nents of the actuator.
High-pressure steam cleansing equipment must not be used.
5.3 Warranty
Assuming that the operating conditions are complied with and units have no me-
chanical damage resulting from incorrect handling, a warranty of 12 months
from the date of delivery will apply for all mechanical and electrical components.
5.4 Disposal
The control unit components and actuators may be returned to SKF Actuation
System (Liestal) AG, for disposal.
5.5 Liability
In every case, the owner or operator of the unit shall be liable for its correct
functioning if it has been incorrectly installed, maintained or repaired by persons
who are not employed by the SKF Service Department or if the unit has not
been used in accordance with the specified application.
SKF Aktiengesellschaft shall not be liable for any damage resulting from
failure to observe these instructions. These instructions shall not be regarded as
an extension of the warranty and liability terms set out in the Conditions of Sale
and Supply of SKF Aktiengesellschaft.
IImmppoorrttaanntt!!
The load specified on the type plate must
not be exceeded. Otherwise the actuator
may be damaged.
Ensure that no liquids are allowed to
penetrate the connections! The actuator
could be damaged by liquid entering it.
The actuator is not suitable for automatic
washing systems.

Technical Istructions Telemag THG/ TLG
531e1655_0701 page 7/8
6 Technical data
Technical data see type plate
The manufacturer reserves the right to modify technical data, without any spe-
cial notification, in order to keep pace with advances in technology. SKF
will be pleased to provide information about current specifications,
possible changes or extensions.
Fig. 4 – Dimensions THG
Fig. 5 – Dimensions TLG

Technical Istructions Telemag THG/ TLG
531e1655_0701 page 8/8
7 Troubleshooting and fault elimination
Fault Cause Remedy
Actuator not No mains voltage Check the mains voltage
working present
Poor connector contact Plug the mains plug in
correctly or check the
the terminal connections
Plug in the control device
plug correctly.
Power cable faulty Return the actuator to the
SKF Service Depart-
ment
Control device or Exchange the control device
control element or control element.
faulty
Motor faulty Return the actuator to the
SKF Service Depart-
ment
Markedly reduced Motor, gears or Immediately take the ac-
tua-
speed nut faulty tor out of operation and
return it to the SKF
Service Department.
Very loud Motor, gears or Immediately take the ac-
tua-
running noise nut faulty tor out of operation and
return it to the SKF
Service Department.
Play in the guidance Gliding elements Return the actuator to the
system worn SKF Service Depart-
ment
Observe the instructions in the relevant customer documentation. If you are un-
able to eliminate a fault, contact Magnetic AG, Liestal.
IImmppoorrttaanntt!!
Any work on the units and connections
may only be undertaken when the mains
plug has been disconnected.

®SKF is a registered trademark of the SKF Group.
©SKF Group 2010
The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permis-
sion is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be
accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein.
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Oristalstrasse 97
4410 Liestal
Switzerland
Tel.: [phone]
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[e-mail]
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