SKF ST User manual

ST
Desk 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
ST Desk Switch 531E, 2955/0.99 I
ST Desk Switch
Contents
Contents, General Summary .................................................................................................................................. I
Compliance with the Technical Instructions, Liability, Intended Applications, Product Package, Function,
Safety Regulations, Installation, Connections, Control Units ................................................................................. 1
Technical Data, Ambient Conditions, Cleaning, Maintenance, Troubleshooting ................................................... 2
Reference Standards:
EN 60601-1
UL 2601-1
23 4 6 7 8
1
9
10
Fig. 0 ST Desk Switch Fig. 1 Typical configuration
Key: Spare Parts:Item Order No.
1 ST desk switch 6 ECOMAG with SEM 1 control unit Sealing rings for
2 KOM control units 7 MAX 6 linear actuators - Mains and control connectors 520991
3 ZVB distribution box
4 SPP locking device
8 TELESMART telescopic actuators with
control unit
- Motor and limit switch connectors
Key for locking the connectors
520992
140375
9 Mains cable5 TELEMAG telescopic
actuators 10 Key
Subject to modifications in the interests of technical progress.

Technical Instructions
ST Desk Switch 531E, 2955/0.99 - 1 -
Compliance with the Technical
Instructions
The unit must only by personnel who are fully conversant with
these Technical Instructions and in accordance with the directions
contained therein. The unit must only be used as described and
should only be installed and connected by qualified technical
personnel.
Liability for Function or Damage
In every case, the owner or operator of the unit shall be liable for
its function if the unit has been incorrectly maintained or repaired
by persons who are not employed by the Magnetic Service
Department or if it has not been handled in accordance with its
specified application.
Magnetic 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
applied by Magnetic Aktiengesellschaft.
The product is not subject to the labelling obligations defined in CE
or EMC Directives. The requisite EMC procedures must be applied
to the end product – with reference to the conditions of installation,
wiring and control – by the manufacturer of the end product and
they must be verified in accordance with the intended application.
The manufacturer of the machine or system shall be responsible
for compliance with these instructions.
Intended Applications
The desk switch is used to operate one, two or a maximum of
three linear actuators.
One control panel for each actuator is mounted on the front panel
of the desk switch. This panel consists of two pushbuttons
arranged side by side.
The symbols for the functions for adjusting the individual
components of the unit are printed onto the front panel.
Depending on the version, the desk switches can be used in
conjunction with the following products:
Control units: KOM1-4
SEM1
Actuators: MAX64
MAX62
TXG
Accessories: SPP
ZVB
Product Package
The desk switch consists of
• the desk switch and
• the connecting cable
The straight version is also supplied with a wiring diagram.
Function
The actuator is set in motion by pressing one of the push buttons.
It continues to operate until the button is released.
The direction of rotation, i.e. retraction or extension of the actuator,
is selected by pressing the appropriate button.
Safety Instructions
These units must not be operated in potentially explosive
environments.
The desk switch is manufactured to comply with the IPX0
degree of protection and, for this reason, it must not be
exposed to moisture.
The desk switch is only approved for indoor use.
Installation
The desk switch must be attached using the four mounting holes
provided (refer to 530D, 2950/55). The connections must be in
accordance with Drawing No. 149305.
All the cables must be secured in such a way that no
force is exerted on the connectors on the desk switch.
If the connectors and cables are forcibly removed, the
desk switch could be irreparably damaged.
The desk switch can be installed in any position.
Connections
The desk switch cable is connected to the appropriate control unit,
to the locking device enclosure on the distribution box or directly to
the actuator.
Refer to the Technical Instructions for the equipment concerned
before connecting the desk switch.
Control Units
Control Units for Memory-based
Operation
Memory principle
Antriebssteuerung Position 1 (1)
Position 2 (2)
Position 3 (3)
Speichertasten (Memory)
Fig. 1 Memory principle

Technical Instructions
ST Desk Switch 531E, 2955/0.99 - 2 -
Memory functions for 1 actuator
AB
AUF
Pos. 2
Pos. 1
Speichertaste
(Memory)
Pos. 3
Fig. 2 Memory for 1 actuator
Setting the memory functions
1. Move the actuators to the basic position:
a) The actuators must be moved in the counter-load direction as
far as the end position (reference point).
2. Storing the memory position:
a) Move the actuators to the memory position.
b) Hold down the 'M' button on the handswitch and, at the same
time, press the '1' button.
c) Release both buttons simultaneously to end the memory
storage operation.
d) Repeat steps a) to c) for positions '2' and '3'.
3. Calling up a memory position:
a) To call up the stored positions, press the appropriate position
button.
b) For example:
To move to position 1, press button '1'.
To move to position 2, press button '2'.
To move to position 3, press button '3'.
All the actuators always move simultaneously to the
stored position.
If the actuators are not moved to the reference position
before the required positions are stored, this can be
initiated by pressing the memory button 'M'.
Technical Data
Refer to Flyer 530D, 2950/55.
Ambient Conditions
Operation:
• Temperature 10 °C to 40 °C
• Max. air humidity 85 %
Storage/transport:
• Temperature –20 °C to +40 °C
• Max. air humidity 95 %
• Do not expose the desk switch to adverse weather conditions.
Cleaning
Protection from water, cleaning, disinfection
The IPX0 degree of protection is only guaranteed is only effective
when the desk switch is properly connected. The control unit is not
suitable for use with machine washing devices.
It is important to prevent any fluids from penetrating the
desk switch.
The plastic housing must be inspected periodically (every
6 months) for signs of mechanical damage (cracks).
The desk switch should be cleaned as soon as possible after use,
in order to prevent the accretion of unwanted material.
• The desk switch should be cleaned with a damp cloth and
water, to which isopropyl alcohol has been added.
The Magnetic Special Instructions ML 0111/87 must be
observed.
Washing water containing chemical additives must be
pH-neutral.
Excessively acidic or alkaline washing water can cause
irreparable damage to the metal and plastic parts of the
control unit.
High pressure steam cleaning machines must not be
used.
Only isopropyl alcohol should be used for wiping over the
desk switch to disinfect it.
Maintenance
The housing and the cables connected to it must be examined at
regular intervals (every 6 months) for signs of mechanical damage.
If there is any damage, the complete desk switch must be
replaced.
Troubleshooting
Fault Cause Remedy
Desk switch does
not operate
Poor plug-in
connection
Check the plug-in
connections
• Observe the instructions in the relevant Customer
documentation and the specific control unit documents.
• If in doubt, contact the Magnetic Service Department
personnel.