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Operating Instructions
Safety Switch TK...
Contact separation
Important!
The guard locking pin must not be under tensile
stress during manual release.
If there are malfunctions, the contacts
opened with contact separation. A stop command
must be generated with these contacts.
Actuating contact separation
1. Unscrew locking screw.
2. Using a screwdriver, turn the contact separa-
tion to
in the direction of the arrow.
The contacts are opened.
¨
Important!
Guard locking is not released.
f
To prevent tampering, the contact separation
f
must be sealed (with sealing lacquer, for exam-
ple) before the switch is set up.
The locking screw must be screwed back in and
f
sealed (with sealing lacquer, for example) after
mounting and after every use of the contact
separation. Tightening torque 0.5 Nm.
Mounting
NOTICE
Device damage due to improper mounting and
unsuitable ambient conditions
Safety switches must not be used as an end stop.
f
Observe EN ISO 14119:2013, sections 5.2
f
and 5.3, for information about fastening the
safety switch.
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.
The actuating head is not allowed to be turned.
f
The specified IP degree of protection is applica-
f
ble only if the housing screws, cable entries and
plug connectors are properly tightened. Observe
the tightening torques.
The guard locking pin must be inserted by at
f
least 2 mm (see Fig. 1).
Mount the safety switch positively. The switch
f
must be fastened using four screws (M5) on the
switch's head. The specified locking force applies
only to this type of attachment.
The locking screw of the contact separation must
f
be sealed before setup (with sealing lacquer,
for example).
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
wires for the connections, pay attention to the
required temperature resistance and the max.
mechanical load!
Strip the insulation from the ends of the individual
f
wires over a length of 6
mm to ensure a safe
±1
contact.
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 Fig. 2).
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 Fig. 2).
can be
The following information applies to devices
with plug connector:
Check that the plug connector is sealed.
f
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 Fig. 2).
4. Check that the cable entry is sealed.
5. Close the switch cover and screw in place
(tightening torque 0.8 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 zone.
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 guard locking pin must move easily to the locked
position. For checking, close the guard several times
and extend and retract guard locking pin.
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.
) for safety
Inspection and service
must be used. Contacts
Danger of severe injuries due to the loss of the
safety function.
If damage or wear is found, the complete switch
f
must be replaced. Replacement 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.
Do not grease guard locking pin.
f
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
Info: 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
correct use stated above, or if the safety regula-
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 application as per the requirements
of
60/75 °C must be used.
The following information applies to devices
with plug connector:
This device is intended to be used and applied with
a Class 2 power source in accordance with UL1310.
Connecting cables for safety switches installed at
the place of use must be separated from all moving
and permanently installed cables and un-insulated
active elements of other parts of the system that
operate at a voltage of over 150 V. A constant
clearance of 50.8 mm must be maintained. This
does not apply if the moving cables are equipped
with suitable insulation materials that possess an
identical or higher dielectric strength compared to
the other relevant parts of the system.
EU declaration of conformity
The declaration of conformity is part of the operating
instructions.
The complete EU declaration of conformity can also
be found at www.euchner.com. Enter the order num-
ber of your device in the search box. The document
is available under Downloads.
Service
If servicing is required, please contact:
EUCHNER GmbH + Co. KG
Kohlhammerstraße 16
70771 Leinfelden-Echterdingen
Service telephone:
+49 711 7597-500
E-mail:
support@euchner.de
Internet:
www.euchner.com
6
WARNING
a copper wire for the temperature range
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