EUCHNER TK Series, Operating Instructions Manual, Page: 5 / 12

5
Operating Instructions
Safety Switch TK…
Installation
NOTICE
Device damage due to improper mounting and
unsuitable ambient conditions
f
Safety switches must not be used as an end stop.
f
Observe EN ISO 14119:2013, sections 5.2 and
5.3, for information about fastening the safety
switch.
f
Observe EN ISO 14119:2013, section 7, for
information about reducing the possibilities for
bypassing an interlocking device.
f
Protect the switch head against damage, as well
as penetrating foreign objects such as swarf,
sand and blasting shot, etc.
f
The actuating head is not allowed to be turned.
Electrical connection
WARNING
Loss of the safety function due to incorrect
connection.
f
Use only safe contacts ( and ) for safety
functions.
f
When choosing the insulation material and
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 2).
Use of the safety switch as guard locking for
process protection
At least one contact must be used. Contacts
with the symbol can also be used (for terminal
assignment, see Figure 2).
The following information applies to devices
with plug connector:
f
Check that the plug connector is sealed.
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 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.
f
Before carrying out the function test, make sure
that there are no persons in the danger area.
f
Observe the valid accident prevention regula‑
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.
Inspection and service
WARNING
Danger of severe injuries due to the loss of the
safety function.
f
If damage or wear is found, the complete switch
must be replaced. Replacement of individual
parts or assemblies is not permitted.
f
Check the device for proper function at regular
intervals and after every fault. For informa‑
tion about possible time intervals, refer to
EN ISO 14119:2013, section 8.2.
f
Do not grease guard locking pin.
Inspection of the following is necessary to ensure
trouble‑free long‑term operation:
f
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.
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
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
, a copper wire for the temperature range
60/75 °C is to be used.
The following information applies to devices
with plug connector:
For use and applications as per the requirements of
, a class 2 power supply according to UL1310
must be used. 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, and it is included as a separate sheet
with the unit.
The 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
:
support@euchner.de
Internet
:
www.euchner.com
Technical data
Parameter Value
Housing material Reinforced thermoplastic
Degree of protection
acc. to IEC 60529
TK‑… (cable entry)
TK‑…SM8
(plug connector SM8)
TK‑…SR11
(plug connector SR11)
IP 67
IP 67
IP 65
Mechanical life 1 x 10 6 operating cycles
Ambient temperature ‑20 … +55 °C
Degree of contamination
(external, acc. to EN 60947‑1) 3 (industrial)
Installation position
Any
Locking force
(in case of head mounting)
5,000 N
Actuation frequency 1,200/h
Switching principle Slow‑action switching contact
Contact material Silver alloy, gold flashed
Connection
TK‑…
TK‑…SM8
TK‑…SR11
Cable entry M20 x 1.5
Plug connector SM8, 8‑pin
Plug connector SR11, 11‑pin+PE
Conductor cross‑section
(flexible/rigid)
0.34 … 1.5 mm²
Conditional short‑circuit
current
100 A
Switching voltage, min.,
at 10 mA
12 V
Switching current, min.,
at 24 V
1 mA
Short circuit protection (control circuit fuse) acc. to IEC 60269‑1
TK‑…/TK‑…SR11
4 A gG
TK‑…SM8 1 A gG
Conventional thermal current I
th
TK‑…/TK‑…SR11 4 A
TK‑…SM8 1 A
Solenoid operating voltage/solenoid power consumption
TK…024
AC/DC 24 V (+10%/‑15%) 8 W
TK…048 AC/DC 48 V (+10%/‑15%) 8 W
TK…110 AC 110 V (+10%/‑15%) 10 W
TK…230 AC 230 V (+10%/‑15%) 11 W
Duty cycle 100%
Utilization category
acc. to EN 60947‑5‑1
TK‑… TK‑…SR11 TK‑…SM8
AC‑15 4 A 230 V 4 A 50 V 1 A 24 V
DC‑13 4 A 24 V 4 A 24 V 1 A 24 V
Rated insulation voltage U
i
= 250 V U
i
= 50 V U
i
= 30 V
Rated impulse withstand
voltage
U
imp
= 2.5 kV U
imp
= 1.5 kV U
imp
= 1.5 kV
Reliability values acc. to EN ISO 13849-1
B
10d
2 x 10
6