SKF ST Series, STH, STF, STG Installation, Operation And Maintenance Manual

ST

Foot switch

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

Technical instructions for Comfodesk
Foot Switch
STF / STH / STG

Contents

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.1 Using these technical instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.2 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.3 Correct usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.4 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2 Functional method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

3 Installation and commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3.1 Components supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3.3 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

4.1 Operation without memory function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

4.2 Operation with memory function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

5 Servicing and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

5.2 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

5.3 Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

5.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

5.5 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

6 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

7 Fault locating and clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Compliance with standards

` EN 60601-1
` EN 60335-1
` UL 2601-1

SKF Actuations System (Liestal) AG
Oristalstrasse 97
CH-4410 Liestal, Switzerland
Phone [phone]
Fax [phone]
Email [e-mail]

531e2950_03/01

Technical Instructions Comfodesk Foot Switch STF/STH/STG

531d2950_03/01 Magnetic – The Linear Drives Company™ Page 2/6

1 General

1.1 Using these technical instructions

The technical instructions are intended for design engineers who are using this
Magnetic product in their applications, and for installation engineers who are working
with the product. The technical instructions contain all relevant information about
this Magnetic product, and are subject to alteration in the interests of technological
progress.

Please read the technical instructions carefully and observe the safety instructions.

The technical instructions can also be used to produce the operating manual for the
end product.

1.2 Explanation of symbols

The technical instructions identify possible dangers and important information using
symbols next to the relevant text.

1.3 Correct usage

The foot switch, in one-way to five-way versions, is used to operate between 1 and a
maximum of 5 linear drives. It is intended for use with the following Magnetic drives
and control units:

STF:

 SEM1Control (for Ecomag)
 KOM1/3 Control
 Matrix MAX62/63/64/65 Drive
 Telesmart TXG Drive


ZVB Distribution Box, SPP Blocking Device

STG:

 KOM2/4 Control


ZVB Distribution Box

STH:

 KOM6 Control


ZVB Distribution Box, SPP Blocking Device

The foot switch is intended for interior applications only.

1.4 Environmental conditions

Operation:

` Temperature 0°C to 40°C
` Air humidity max. 85%

Storage/transportation:



Temperature -20°C to 60°C

 Air humidity max. 95%

2 Functional method

A pair of pushbuttons is fitted on the foot switch for each drive to be controlled. The
function in question is identified using the relevant symbols. Pressing on one of the
pushbuttons initiates drive operation. The drive will run for as long as the button is
held down.

This symbol indicates operations and
conditions which may pose a risk to
persons or objects.

Observe these instructions carefully!

This symbol identifies information and
useful notes for the user.

The switch must not be subjected to poor
weather conditions. No equipment should be
operated in an atmosphere where there is a
risk of explosion.

Technical Instructions Comfodesk Foot Switch STF/STH/STG

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3 Installation and commissioning

3.1 Components supplied

The foot switch comprises

1 to 5 pushbutton pairs, with connected cable set.

Options



Expanding threaded inserts (ZBE-521122)

 Rubber stops (ZBE-135310)

3.2 Installation

Free-standing installation with rubber stops

The foot switch can be positioned on any level surface using the 4 rubber stops (see
options).

Fixed installation

For fixed installation there are 4 holes with embedded expanding threaded inserts.
See fig. 1:

3.3 Connection

The foot switch line is connected to the relevant control unit, the blocking device
(SPP), the distribution box (ZVB) or directly to the drive.

Fig. 3 shows various connection options:

When connecting the foot switch to the relevant equipment, please observe the
technical instructions for that equipment.

Fig. 1 – Installation

Fig. 2 – Insert plugs correctly

Ensure that the entire surface of the switch
is locating correctly, otherwise operation
may be impaired.

Ensure that the plug is inserted into the
correct socket, otherwise there may be a risk
of the socket in the equipment being
destroyed. Note the plug shape (arrows must
be at the top).

Fig. 3 – Connection options

All cables must be secured so that no forces
are exerted on the plug connections on the
foot switch.

Stripped plugs and cables may destroy the
foot switch!

Cables must not be bent or clamped in any
way. This may cause malfunctions due to a
short circuit.

Technical Instructions Comfodesk Foot Switch STF/STH/STG

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4 Operation

4.1 Operation without memory function

The drive is controlled directly using the direction keys and .

` Key Drive is disengaged.
` Key Drive is engaged.

4.2 Operation with memory function

Initialisation run

Move the drive (drives) using the and keys on the foot switch in counter-load
direction to the limit position (= reference position)

The drive is controlled directly using the direction keys and .

` Key Drive is disengaged.
` Key Drive is engaged.

Keys

1, 2

and 3on the foot switch are used to move to saved positions.

Position 1

Position 2

Position 3

Fig. 4 – Operation without memory function

The initialisation run is compulsory,
otherwise the memory positions cannot be
set up.

Fig. 5 – Operation with memory function

Technical Instructions Comfodesk Foot Switch STF/STH/STG

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Saving memory positions

1. Use the keys to move all the drives into the position you want to save on key 1.
(Hold down the relevant keys until the required position has been reached.)

2. Press the

m

key followed by (or simultaneously) key 1.
There should be a gap of no longer than 0.5 seconds between pressing the two
keys.

The save procedure is confirmed by an acoustic signal. If no acoustic signal is
sounded, repeat step 2. It may be that the 0.5 seconds has been exceeded.

Repeat steps 1 to 3 for programming keys

2

and 3as required.

Retrieving memory positions

` To retrieve a memory position, press the corresponding key 1, 2or 3on the foot

switch.

Hold down the key until the drives have reached their positions.

All drives will move simultaneously to the saved position. If the drives have not been
moved to the reference positions during the commissioning process, this can be
triggered by pressing the memory pushbutton

M

.

5 Servicing and maintenance

5.1 Maintenance

The plastic housing and the connected cable need to be checked periodically (every six
months) for mechanical damage (cracks).

For multi-way switches, a check must be conducted regularly to ensure that the fixing
chamber between the individual switches is securely in position. Two fastening clamps
are required per connection.

Damaged parts should normally be replaced by Magnetic Customer Services.

5.2 Servicing

Water protection, cleaning, disinfecting

The foot switch must only be washed or disinfected with the plug properly connected.

Protection classification IPx5 only applies when the unit is plugged in.

Following contamination, the foot switch should be cleaned as soon as possible to
prevent residues drying onto the switch.

A damp cloth and water are suitable for cleaning by hand. The addition of isopropyl
alcohol is permitted.

5.3 Guarantee

Under the proviso that the operating conditions have been observed and that the
equipment does not show any evidence of mechanical damage due to incorrect usage,
a guarantee period of 12 months following delivery shall apply to all mechanical and
electrical components.

5.4 Disposal

Control components and drives can be returned to Magnetic AG, Liestal for disposal.

5.5 Liability

Liability for the correct functioning of the equipment shall be transferred to the
owner or user, in all cases where the equipment has been incorrectly installed,
maintained or serviced by persons not representing Magnetic Service or if the
equipment has been operated in a manner inconsistent with the correct usage.
Magnetic Aktiengesellschaft shall accept no liability for damage caused by
non-compliance with the instructions provided in this documentation. The
instructions provided in this document shall not represent additions to the guarantee
and liability conditions for the sales and delivery conditions from Magnetic
Aktiengesellschaft.

If in time the memory positions are no
longer correct, repeat the initialisation run.

Observe the special magnetic guidelines in
ML 0111/87. Cleaning water with chemical
additives must be PH neutral. Excessively
acidic or alkaline cleaning water may destroy
metal and plastic parts.

High-pressure steam cleaners are not
permitted for use. Only the cleaning agent
isopropyl alcohol may be used for
disinfecting by hand.

Technical Instructions Comfodesk Foot Switch STF/STH/STG

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The product is not subject to identification regulations conforming to CE or EMC
guidelines. The necessary EMC measures must be taken for the end product by the
manufacturer of the end product, in accordance with the installation conditions,
wiring and control system, and checked for the intended use. The manufacturer of the
machine or system shall be obliged to observe these regulations.

6 Technical data

Technical data Foot switches STF/STH/STG
Switching voltage 12V DC
Switched current 50 mA
Connection cable 2500 mm
Ambient temperature 0/+40 °C
Protection type/ IPx5/Safety extra-low voltage
classification
Colour grey/blue
Weight 500/1000/1500 g
Fixing screws M5 x (8 + material thickness)

7 Fault elimination and troubleshooting

Fault Cause Rectification

No function Poor Check

plug connection plug connections

The instructions in customer-specific documentation must also be observed. Should it
not be possible to rectify a fault, please contact Magnetic AG, Liestal.

223

105

191

40

230

108,6

82

325

311,6

148.5

Fig. 5 – Dimension drawing