Operating Instructions Safety Switches STP...
EUCHNER GmbH + Co. KG Kohlhammerstraße 16 D-70771 Leinfelden-Echterdingen Tel. +49/711/75 97-0 Fax +49/711/75 33 16 www.euchner.de [email protected]
Subject to technical modifications; no r
esponsibility is accepted for the accuracy of this information. © EUCHNER GmbH + Co. KG
095803-07-03/12 (translation of the original operating instructions)
Electrical Connection
When choosing the insulation material and wire
for the connections, pay attention to the over-
temperature in the housing (depending on the
operating conditions)!
Only switching contacts marked with the
positively driven NC contact symbol
are to
be used for the safety circuit.
For switching elements with four positively dri-
ven NC contacts only the contacts 21-22 and
41-42 are actuated on activating and de-
activating the guard locking. In applications with
potentially hazardous states (e.g. overtravelling
movements), contact 21-22 and/or 41-42 must
always be integrated into the safety circuit.
For STP with plug connector
:
For use and applications as per the requirements of
, a class 2 power supply or a class 2 transformer
according to UL1310 or UL1585 must be used.
Connection 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 which
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 which possess an
identical or higher dielectric strength compared to
the other relevant parts of the system.
The operating voltage for the interlocking solenoid
must match the value on the rating plate (e.g.
U
S
= AC/DC 24 V).
f
Version STP.. (Cable entry M20x1.5)
f
Break out the required entry opening.
f
Fit the cable gland with the appropriate degree of
protection.
f
For pin assignment see Figure 3.
f
Tighten the screws with a torque of 0.5 Nm.
f
Check that the cable entry is sealed.
f
Close the cover and screw in position.
f
Version STP..SR.. (plug connector)
f
For pin assignment see Figure 3.
Functional Check
Warning! Danger of fatal injury as a result of faults
in installation and functional check.
Before carrying out the functional check, make
sure that there are no persons in the danger
area. Observe the valid accident prevention
regulations.
After installation and any fault, the safety function must
be fully checked. Proceed as follows:
f
Mechanical function test
The actuator must slide easily into the actuating head.
Close the safety guard several times to check the
function.
f
Electrical function test
1. Switch on operating voltage.
2. Close all safety guards.
Guard locking by solenoid force:
¨
Activate
guard locking.
f
The machine must not start automatically.
f
It must not be possible to open the safety guard.
3. Enable operation in the control system.
f
It must not be possible to deactivate the guard
locking as long as operation is enabled.
(F
Zh
=
F
max
) = 2,000 N
1,3
4. Disable operation in the control system and
deactivate guard locking.
f
The safety guard must remain locked until there is
no longer any risk of injury.
f
It must not be possible to start the machine as long
as the guard locking is deactivated.
Repeat steps 2 - 4 for each safety guard.
Inspection and Service
If damage or wear is found, the complete switch
and actuator assembly must be replaced.
Replacement of individual parts or assemblies
is not permitted!
No servicing is required, but
regular
inspection
of
the following is necessary to ensure trouble-free long-
term operation:
f
correct switching function
f
secure mounting of components
f
dirt and wear
f
sealing of cable entry
f
loose cable connections or plug connectors.
Note:
The year of manufacture can be seen in the
bottom, right corner of the rating plate.
Exclusion of Liability under the Following
Conditions:
f
if the unit is not used for its intended purpose
f
non-compliance with safety regulations
f
non-compliance with safety regulations
f
failure to perform functional checks.
EC declaration of conformity
The manufacturer named below herewith declares that
the product fulfills the provisions of the directive(s)
listed below and that the related standards have been
applied.
EUCHNER GmbH + Co. KG
Kohlhammerstraße 16
70771 Leinfelden-Echterdingen, Germany
Directives applied:
f
Machinery directive 2006/42/EC
Standards applied:
f
EN 60947-5-1:2004 + Cor.:2005 + A1:2009
f
EN 1088:1995+A2:2008
Leinfelden, July 2010
Dipl.-Ing. Michael Euchner
Director
Duc Binh Nguyen
Authorized representative empowered to draw up
documentation
The signed EC declaration of conformity is included
with the product.
Technical Data
Parameters
Value
Housing material
Reinforced thermoplastic
Degree of protection according to IEC 60529
Cable entry
IP67
Plug connector
IP65
Mech. Mechanical life
1x10
6
operating cycles
Ambient temperature
-20 ... +55°C
Degree of contamination
(external, according to
3 (industrial)
EN 60947-1)
Installation position
Any
Approach speed, max.
20 m/min
Extraction force (not locked)
30 N
Retention force
20 N
Actuating force, max.
35 N
Actuation frequency
7000 / h
Switching principle
Slow-action switching contact
Contact material
Silver alloy, gold flashed
Connection type
STP...
Screw terminal, M20x1.5
STP...SR6
Plug connector SR6, 6-pin+PE
STP...SR11
Plug connector SR11, 11-pin+PE
Conductor cross-section
(flexible/rigid)
0.34 ... 1.5 mm²
Operating voltage for
optional LED indicator
L024
24 V
Rated insulation voltage
STP... , STP...SR6
U
i
= 250 V
STP...SR11
U
i
= 50 V
Rated impulse withstand voltage
STP... , STP...SR6
U
imp
= 2.5 kV
STP...SR11
U
imp
= 1.5 kV
Rated short-circuit current
100 A
Switching voltage, min.
12 V
at 10 mA
Utilization category to EN 60947-5-1
STP... , STP...SR6
AC-15 4 A 230 V / DC-13 4 A 24 V
STP...SR11
AC-15 4 A 50 V / DC-13 4 A 24 V
Switching current, min., at 24 V 1 mA
Short circuit protection
(control circuit fuse)
4 A gG
according to IEC 60269-1
Conv. thermal current I
th
4 A
Solenoid operating voltage/solenoid power consumption
STP...024
AC/DC 24 V(+10%/-15%)
8 W
STP...110
AC
110 V(+10%/-15%)
10 W
STP...230
AC
230 V(+10%/-15%)
11 W
Duty cycle
100 %
Locking force F
max
Straight actuator with bush
F
S
= 2,500 N
Bent actuator with bush
F
S
= 1500 N
Locking force F
Zh
in accordance with
test principles GS-ET-19
Switch with increased retention force STP.B..., STP.C...
Actuating force at 20 °C
45 N
Mechanical life, retention
1 x 10
5
operating cycles
Reliability figures according to EN ISO 13849-1
B
10d
5 x 10
6
