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4.6 Fixing the actuator to the guard
Attention: As required by EN ISO 14119, the actuator must be fixed immovably
to the door frame.
Always affix the actuator with at least 4 M5 screws with
resistance class 8.8 or higher, and flat seating heads. In-
stall the screws with medium resistance thread locker
with the number of threads engaged being equal to or
greater than the screw diameter. The actuator must never
be fixed with less than 4 screws. The tightening torque of
the 4 M5 screws is 3.0 Nm.
After fixing, you must plug the 4 screw holes with the caps
supplied. Inserting the caps is considered a suitable mea-
sure, to reduce the possibility of actuator disassembly to a minimum, in accordance
with EN ISO 14119.
For correct fixing, other means can also be used, such as rivets, non-removable se-
curity screws (one-way), or other equivalent fixing system, provided that it can en-
sure adequate fixing.
4.7 Device-actuator alignment
Attention: Although the device
is designed to facilitate align-
ment between the device and
its actuator, excessive mis-
alignment could cause dam-
age to it. Periodically check the
correct alignment between the
device and the respective ac-
tuator.
Maximum admissible misalignment from hole axis, for rigid doors: ± 2,5 mm (verti-
cal and horizontal).
The actuator must not knock on the outside of the actuator inlet area, and must not
be used as a centring device for the mobile protection.
In the event of application on hinged doors, check that the radius between the actua-
tor axis and the axis of the hinge fitted to the door is greater than 150 mm.
Do not use a hammer for the adjustments, unscrew the screws and adjust the device
manually, then tighten it in position.
This device is not suitable for applications in which the moving door with immovably
fastened actuator permits misalignments of an entity that prevents the pin entering
the corresponding hole in the device with the door completely closed.
The device is provided with a through hole for inserting the actuator. If used in
dusty environments, we recommend not to obstruct the outlet hole opposite
to the inlet one. This will allow any dust entering the hole to exit from the op-
posite side.
4.8 Escape release button
Some of the device versions are equipped with a release but-
ton in order to allow any personnel accidentally trapped in-
side the machine to get out. This button, complying with the
EN ISO 14119 standard, directly acts on the lock mechanism
and immediately releases the actuator regardless of the state
of the device. Pressing this button causes:
- in mode 1: immediate deactivation of the safety outputs OS1,
OS2 and of the signalling output O4;
- in mode 2: immediate deactivation of the signalling output O4
only;
- in mode 3: immediate deactivation of the safety output OS1
and of the signalling output O4.
This escape release button unlocks the guard even if the device is not pow-
ered on.
For correct installation of the escape release button, the following instructions are to
be observed.
- The release button must be clearly visible from inside the machine.
- Button activation must be easy, immediate and independent from the machine op-
erating status; to help you recognise the button and explain its function, identifica-
tion stickers are available in various languages (contact the sales department for
detailed information).
- For an operator standing outside the machine, it must be impossible to activate the
release button when the door is closed.
- To guarantee correct operation and easy resetting, a distance ranging from 10 to
35 mm must be kept between the wall from where the button protrudes and the
release button.
- The actuation path of the release button must always be kept clean. since dirt or
chemical products could compromise the device operation.
- The personnel concerned must be adequately trained on correct button operation,
so as to avoid any improper use (i.e. the button must not be used as a clothes-hook).
- The release button must not be used as a machine emergency stop.
For installation on walls thicker than 20 mm, extensions for the release button are
available.
max 100 mm
For correct installation of the extensions, the following instructions are to be ob-
served:
- do not exceed an overall length of 100 mm between the release button and the
device;
- always use medium resistance threadlocker adhesive on every threaded connection
between button, extensions, and device;
- avoid twisting or bending the release button. Where necessary, use an appropriate
sliding guide (pipe or bushing), if the button and its extensions have a length greater
than 70 mm;
- tightening torque of button and extensions from 3 to 4 Nm with medium-resistance
thread locker.
4.9 Auxiliary release with a tool or a lock
Some of the device versions are provided with an
auxiliary release in order to allow an easy installa-
tion (release with a screwdriver) or the opening only
t o authorised personnel (lock release). Both these me-
chanical release devices act inside the device like
the escape release button described previously.
Therefore they also unlock the guard in case of power failure. These release devices
may only be operated by a machine maintenance engineer who has received ade-
quate training on the dangers deriving from their use.
4.9.1 Use of the auxiliary release with a screwdriver
- Turn the release device anticlockwise by 180° with the screwdriver.
4.9.2 Use of the auxiliary release with a lock
- Open the protection cap.
- Insert the key supplied with the device and turn clockwise by 180°.
- Do not force the key beyond 180°.
- Each time after the key is extracted, close the rubber cap.
- The release key must only be available to the machine maintenance engineer and
kept in a secluded place.
- The release key must not be available to the machine operator.
- Never leave the release key inserted in the device during normal machine operation.
For particular applications, versions are available without any auxiliary release
device.
4.10 Electrical connections of the device
Attention: The device is fitted with OSSD-type solid state electronic outputs.
These outputs behave differently from electromechanical contacts. Use and
installation of a safety device with solid state outputs is only permitted if all
properties of this particular type of outputs are known in detail.
4.10.1 Electrical connections of the safety switch
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Versions with M12 connector Versions with cable
Connection NS ••••••M• NS ••••••P• NS ••••••Q• NS ••••••A•
NS ••••••B•
NS ••••••E•
A1 1 1 1 brown brown
A2 3 3 3 white blue
IE1 10 8 8 purple red
IE2 12 5 / red-blue purple
O3 5 2 / pink black
O4 9 / 5
(a)
red /
IS1 2 / 2 blue /
IS2 6 / 6 yellow /
OS1 4 4 4 green red-white
OS2 7 7 7 black black-white
I3 8 6 / grey purple-white
I5 11 / / grey-pink /
Legend: A1 = power supply input +24 Vdc; A2 = power supply input 0 V;
IE1, IE2 = inputs for solenoid activation with two-channel operation; O3 = signalling output for
inserted actuator; O4 = signalling output for inserted and locked actuator;
IS1, IS2 = safety inputs; OS1, OS2 = safety outputs; I3 = input for programming actuator / reset;
I5 = EDM input (only available with version NS •5••••••).
Note:
(a)
Available for 8-pole connector, not available for the end of a chain with Y connectors.
4.10.2 Internal connections of integrated control devices
The switch is also available with long housing in which the control devices are inte-
grated. Table 1 illustrates the standard connections for these devices. Other configu-
rations are available on request.
4.11 RFID sensor switching points
The RFID sensor on the device recognises the actuator when placed in front of it.
Within this range the signalling output O3 is activated along with the ACT LED to in-
dicate the “guard closed” condition. In this condition, it is possible to lock the “guard
closed” state by means of inputs IE1 and IE2. After locking, the LOCK LED and the
output O4 are activated. At the same time the RFID sensor extends its release dis-
tance to prevent vibrations or impacts from causing involuntary opening of outputs
OS1, OS2 and O4 when the guard is locked. If the inputs IE1 and IE2 are activated
or deactivated, without the actuator present, the device does not lock or activate any
of the outputs OS1, OS2, O4. To open the guard it is necessary to operate via the in-
puts IE1 and IE2; with guard unlocked, output O4 will be deactivated and the LOCK
LED will switch off. At this point, the RFID sensor will reset its operating distance to
the initial values and by opening the guard the output O3 and the ACT LED will be
deactivated.
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