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Idiomas disponibles
Operating Instructions
Safety Switch STA-TW... (Twin)
Emergency unlocking
Permits opening of a locked guard from outside the
danger area without tools.
Important!
It must be possible to operate the emergency
f
unlocking manually from outside the protected
area without tools.
The emergency unlocking must possess a
f
marking indicating that it may be used only in
an emergency.
The actuator must not be under tensile stress
f
during manual release.
The unlocking function meets all other require-
f
ments from EN ISO 14119.
T h e e m e rg e n c y u n l o c k i n g m e e t s t h e
f
requirements of Category B according to
EN ISO 13849-1:2015.
The contacts
are opened when emergency
unlocking is actuated. A stop command must be
generated with these contacts.
Installation
NOTICE
Device damage due to improper mounting and
unsuitable ambient conditions
Safety switches and actuators must not be used
f
as an end stop.
Observe EN ISO 14119:2013, sections 5.2 and
f
5.3, for information about fastening the safety
switch and the actuator.
Observe EN ISO 14119:2013, section 7, for
f
information about reducing the possibilities for
bypassing an interlocking device.
Protect the switch head against damage, as well
f
as penetrating foreign objects such as swarf,
sand and blasting shot, etc.
Changing the actuating direction
NOTICE
It is not possible to change the position of the
entire head unit.
Figure 2: Changing the actuating direction
1. Remove the screws from the actuating head.
2. Set the required direction.
3. Tighten the screws with a torque of 1.5 Nm.
4. Cover the unused actuating slot with the en-
closed slot cover.
Electrical connection
WARNING
Loss of the safety function due to incorrect
connection.
Use only safe contacts (
and
f
functions.
When choosing the insulation material and
f
wire for the connections, pay attention to the
required temperature resistance and the max.
mechanical load!
Use of the safety switch as guard locking for
personnel protection
At least one contact
must be used. It signals
the guard locking state (for terminal assignment,
see Figure 3).
Use of the safety switch as guard locking for
process protection
At least one contact
with the
symbol can also be used (for terminal
assignment, see Figure 3).
The following information applies to devices
with cable entry:
1. Use a suitable tool to open the desired inser-
tion opening.
2. Fit the cable gland with the appropriate degree
of protection.
3. Connect and tighten the terminals with 0.5 Nm
(for terminal assignment, see Figure 3).
4. Check that the cable entry is sealed.
5. Close the switch cover and screw in place
(tightening torque 1.5 Nm).
Function test
WARNING
Fatal injury due to faults during the function test.
Before carrying out the function test, make sure
f
that there are no persons in the danger area.
Observe the valid accident prevention regula-
f
tions.
Check the device for correct function after installa-
tion and after every fault.
Proceed as follows:
Mechanical function test
The actuator must slide easily into the actuating
head. Close the guard several times to check the
function. The function of any manual releases (except
for the auxiliary release) must also be tested.
Electrical function test
1. Switch on operating voltage.
2. Close all guards and activate guard locking.
The machine must not start automatically.
¨
¨
It must not be possible to open the guard.
¨
¨
3. Start the machine function.
It must not be possible to release guard locking
¨
¨
as long as the dangerous machine function is
active.
4. Stop the machine function and release guard
locking.
The guard must remain locked until there is no
¨
¨
longer any risk of injury (e.g. due to movements
with overtravel).
It must not be possible to start the machine
¨
¨
function as long as guard locking is released.
Repeat steps 2 - 4 for each guard.
Inspection and service
WARNING
Danger of severe injuries due to the loss of the
safety function.
If damage or wear is found, the complete switch
f
and actuator assembly must be replaced. Re-
placement of individual parts or assemblies is
not permitted.
Check the device for proper function at regular
f
intervals and after every fault. For informa-
tion about possible time intervals, refer to
EN ISO 14119:2013, section 8.2.
) for safety
Inspection of the following is necessary to ensure
trouble-free long-term operation:
correct switching function
f
secure mounting of all components
f
damage, heavy contamination, dirt and wear
f
sealing of cable entry
f
loose cable connections or plug connectors.
f
Information: The year of manufacture can be seen
in the bottom, right corner of the type label.
Exclusion of liability and warranty
In case of failure to comply with the conditions for
must be used. Contacts
correct use stated above, or if the safety instruc-
tions are not followed, or if any servicing is not
performed as required, liability will be excluded and
the warranty void.
Notes about
The following information applies to devices
with cable entry:
For use and applications as per the requirements
of
60/75 °C is to be used.
EU declaration of conformity
The declaration of conformity is part of the oper-
ating instructions, and it is included as a separate
sheet with the unit.
The original EU declaration of conformity can also
be found at: www.euchner.com
Service
If service support is required, please contact:
EUCHNER GmbH + Co. KG
Kohlhammerstraße 16
D-70771 Leinfelden-Echterdingen
Service telephone:
+49 711 7597-500
Fax:
+49 711 753316
E-mail:
Internet:
www.euchner.com
6
, a copper wire for the temperature range
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