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Operating Instructions
Safety Switch STP...
Selection of the actuator
NOTICE
Damage to the device due to unsuitable actuator.
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Make sure to select the correct actuator (see
table in Fig. 2).
Additionally pay attention to the door radius and
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the mounting options (see Fig. 4).
The following versions are available:
Actuator S for safety switches without insertion
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funnel.
Actuator L for safety switches with insertion funnel.
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Manual release
Some situations require the guard locking to be
released manually (e.g. malfunctions or an emer-
gency). A function test should be performed after
release.
More information on this topic can be found in the
standard EN ISO 14119:2013, section 5.7.5.1. The
device can feature the following release functions:
Auxiliary release
In the event of malfunctions, the guard locking can
be released with the auxiliary release irrespective
of the state of the solenoid.
The contacts
are opened when the auxiliary
release is actuated. A stop command must be
generated with these contacts.
Actuating auxiliary release
1. Unscrew locking screw.
2. Using a screwdriver, turn the auxiliary release
to
in the direction of the arrow.
Guard locking is released.
¨
Important!
The actuator must not be under tensile stress
f
during manual release.
To prevent tampering, the auxiliary release must
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be sealed (with sealing lacquer, for example)
before the switch is set up.
The locking screw must be screwed back in and
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sealed (with sealing lacquer, for example) after
mounting and after every use of the auxiliary
release. Tightening torque 0.5 Nm.
Auxiliary key release/auxiliary
release with triangular wedge
Function as for auxiliary release.
Important!
The actuator must not be under tensile stress
f
during manual release.
Escape release
This permits opening of a locked guard from the
danger area without tools.
Important!
It must be possible to actuate the escape re-
f
lease manually from inside the protected area
without tools.
It must not be possible to reach the escape
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release from the outside.
The actuator must not be under tensile stress
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during manual release.
The escape release meets the requirements of
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Category B according to EN ISO 13849-1.
The contacts
are opened when the escape
release is actuated. A stop command must be
generated with these contacts.
Emergency release
This permits opening of a locked guard from outside
the danger area without tools.
Important!
It must be possible to operate the emergency
f
release manually from outside the protected
area without tools.
The emergency release must possess a mark-
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ing indicating that it may be used only in an
emergency.
The actuator must not be under tensile stress
f
during manual release.
The release function meets all other require-
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ments from EN ISO 14119.
The emergency release meets the requirements
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of Category B according to EN ISO 13849-1.
The contacts
are opened when the emergency
release is actuated. A stop command must be
generated with these contacts.
Wire front release (bowden)
Release via a pull wire. Depending on the type of
attachment, the wire front release can be used as
emergency release or escape release.
Important!
The wire front release (bowden) meets the
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requirements of Category B according to
EN ISO 13849-1.
The correct function depends on the laying of
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the pull wire and the attachment of the pull
handle, and this is the responsibility of the plant
manufacturer.
The actuator must not be under tensile stress
f
during manual release.
Mounting
NOTICE
Device damage due to improper mounting and
unsuitable ambient conditions.
Safety switches and actuators must not be used
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as an end stop.
Observe EN ISO 14119:2013, sections 5.2 and
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5.3, for information about mounting the safety
switch and the actuator.
Observe EN ISO 14119:2013, section 7, for
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information about reducing the possibilities for
bypassing an interlocking device.
Protect the switch head against damage, as well
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as penetrating foreign objects such as swarf,
sand and blasting shot, etc.
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 locking screw of the auxiliary release must
f
be sealed prior to setup (with sealing lacquer,
for example).
7
Changing the actuating direction
Fig. 1: 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 0.8 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
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functions.
When choosing the insulation material and
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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
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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. 3).
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 Fig. 3).
The following information applies to devices
with plug connector:
Check that the plug connector is sealed.
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The following information applies to devices
with cable entry:
Important!
The switch cover may be fitted only when the
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guard is open.
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 terminals with 0.5 Nm (for
terminal assignment, see Fig. 3).
4. Check that the cable entry is sealed.
5. Close the switch cover and screw in place
(tightening torque 0.8 Nm).
C
D
B
A
) for safety
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