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5.1 Access monitoring
This switch alone is not sufficient to protect any operators or maintenance engineers
in the event that they are able to physically enter the danger area with their whole
body, since any unintentional closing of a guard behind them could allow the machine
to be restarted. If this device is solely responsible for authorising machine re-start,
additional protection systems must be provided (lock out/tag out) to mitigate risk; using
for example the padlockable lock device to block the actuator input (item VF KB1),
designed specifically for prevention of any unexpected unintentional machine start-up
with the operator still inside it.
Please contact technical assistance for more information (see SUPPORT paragraph).
5.2 Using the release with lock
Items FD ••99 and FP ••99 are equipped with a release with lock, to allow the guard to
be opened only by authorized personnel in possession of the appropriate key.
This mechanical device acts directly on the lock mecha-
nism, and releases the actuator regardless of device
state.
This release device may only be operated by a machine
maintenance engineer who has received adequate train-
ing on the dangers deriving from its use.
how to use the auxiliary key release:
1) Open the protection cap.
2) Insert the key supplied with the switch and turn clock-
wise by 180°.
3) Do not force the key beyond 180°.
4) Extract the actuator from the device.
5) Do not turn the key with the actuator extracted.
6) Each time after the key is extracted, close the rubber
cap.
Attention:- 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.
5.3 Using the release with manual mechanical delay
Items
FD ••R2 and FP ••R2
are equipped with a release with manual mechanical
delay, for use where the hazardous condition persists for a limited period, even after
the machine stop command has been actuated.
This mechanical device acts directly on the lock mecha-
nism, and releases the actuator regardless of device
state.
how to use the auxiliary release with manual mechanical
delay:
1) To release the actuator, rotate the knob clockwise as far
as it will go up to the stop; only then extract the actuator.
2) To lock the actuator, insert it in the device; only then,
rotate the knob anticlockwise as far as it will go up to the
stop.
3) Never force the knob, by turning it anticlockwise with
the actuator extracted.
6 INSTRUCTIONS FOR PROPER USE
6.1 Installation
- Tighten the fixing screws of electrical conductors to a torque from 0.6 to 0.8 Nm.
- Do not stress the device with bending and torsion.
- Do not modify the device for any reason.
- Do not exceed the tightening torques specified in the present manual.
- The device carries out an operator protection function. Any inadequate installation
or tampering can cause serious injuries and even death, property damage, and
economic losses.
- These devices must not be bypassed, removed, turned or disabled in any other way.
- If the machine where the device is installed is used for a purpose other than that
specified, the device may not provide the operator with efficient protection.
- The safety category of the system (according to EN ISO 13849-1), including the safe-
ty device, also depends on the external components connected to it and their type.
- Before installation, make sure the device is not damaged in any part.
- Avoid excessive bending of connection cables in order to prevent any short circuits
or power failures.
- Do not paint or varnish the device.
- Do not drill the device.
- Do not use the device as a support or rest for other structures, such as raceways,
sliding guides or similar.
- Before commissioning, make sure that the entire machine (or system) complies with
all applicable standards and EMC directive requirements.
- The fitting surface of the device must always be smooth and clean.
- The documents necessary for a correct installation and maintenance are always
available in the following languages: English, French, German and Italian.
- Should the installer be unable to fully understand the documents, the product must
not be installed and the necessary assistance may be requested (see paragraph
SUPPORT).
- When the device is installed on a mobile frame and the actuator is installed on a
mobile door, ensure that the device cannot be damaged by simultaneous opening
of the frame and the door.
- Always attach the following instructions to the manual of the machine in which the
device is installed.
- These operating instructions must be kept available for consultation at any time and
for the whole period of use of the device.
6.2 Do not use in the following environments
Attention: Do not use in environments where dust and dirt may in any way
penetrate the head and deposit there. Do not use in particular where metal dust,
concrete or chemicals are spread.
- In environments where continual changes in temperature cause the formation of
condensation inside the device.
- In environments where the application causes collisions, impacts or strong vibrations
to the device.
- In environments with the presence of explosive or flammable dusts or gases.
This limitation does not apply to devices declared compliant with ATEX Directive
2014/34/EU.
- In environments where ice can form on the device.
- In environments containing strongly aggressive chemicals, where the products used
coming into contact with the device may impair its physical or functional integrity.
6.3 Mechanical stop
Attention: The door must always be provided with an independent end-limit
mechanical stop at limit of travel.
Do not use the device as mechanical stop for the door.
6.4 Maintenance and functional tests
Attention: Do not disassemble or try to repair the device. In case of any
malfunction or failure, replace the entire device.
Attention: In case of damages or wear it is necessary to change the whole
device including its actuator. Correct operation cannot be guaranteed when the device
is deformed or damaged.
- The installer is responsible for establishing the sequence of functional tests to which
the device is to be subjected before the machine is started up and during mainte-
nance intervals.
- The sequence of the functional tests can vary depending on the machine complexity
and circuit diagram, therefore the functional test sequence detailed below is to be
considered as minimal and not exhaustive.
- Perform the following sequence of checks before the machine is commissioned and
at least once a year (or after a prolonged shutdown):
1) For FD ••93, FP ••93, FL ••93, FC ••93 articles:
- Open the guard while the machine is moving. The machine must stop immediately.
The stopping time of the machine must be always shorter than the time required by
the operator for opening the guard and reaching the dangerous parts.
For articles FD ••99, FP ••99:
- Lock the guard and start the machine. It must be impossible to open the guard.
- Release the guard with the appropriate key. The machine must stop immediately.
The stopping time of the machine must be always shorter than the time required by
the operator for opening the guard and reaching the dangerous parts.
For articles FD ••R2, FP ••R2:
- Lock the guard and start the machine. It must be impossible to open the guard.
- Start rotating the release knob clockwise. From the initial rotations, the machine
must begin stopping. The machine must stop completely before the door is released
by rotating the knob clockwise. The stopping time of the machine must be always
shorter than the time required by the operator for opening the guard and reaching
the dangerous parts.
2) Try to start the machine while the guard is open. The machine must not start.
3) Check correct actuator to device alignment. If the actuator inlet is worn, replace the
entire device and actuator assembly.
4) All external parts must be undamaged.
5) If the device is damaged, replace it completely.
6) The actuator must be securely locked to the door; make sure that none of the ma-
chine operator’s tools can be used to disconnect the actuator from the door.
7) If you have difficulty inserting the actuator in the switch, never apply oil or grease
to the switch head; instead, check the actuator alignment as described in paragraph
INSTALLATION INSTRUCTIONS. If it is still difficult to insert the actuator, replace
the entire device.
8) The device has been created for applications in dangerous environments, therefore
it has a limited service life. Although still functioning, after 20 years from the date
of manufacture the device must be replaced completely. The date of manufacture is
placed next to the product code (see paragraph MARKINGS).
6.5 Wiring
Attention: Check that the supply voltage is correct before powering the device.
- Keep the charge within the values specified in the electrical operation categories.
- Only connect and disconnect the device when the power is off.
- During and after the installation do not pull the electrical cables connected to the
device.
- Always connect the protection fuse (or equivalent device) in series to the safety
electrical contacts.
- At the end of the wiring, check that no contaminating element has been introduced
inside the device.
- Before closing the device cover verify the correct positioning of the gaskets.
- Verify that the electrical cables, wire-end sleeves, cable numbering systems and any
other parts do not obstruct the cover from closing correctly or if pressed between them
do not damage or compress internal parts
- During and after the installation do not pull the electrical cables connected to the
device. If traction is applied to the cables (not supported by an appropriate cable
gland) internal parts of the device may be damaged.
- Adhere to the following minimum and maximum cross-sections of electrical
conductors designed for screw terminals:
Contact blocks 20, 21, 22, 28, 29, 30, 33, 34
Contact blocks 5, 6, 7, 9, 18
min 1 x 0.34 mm
2
(1 x AWG 22)
max. 2 x 1.5 mm
2
(2 x AWG 16)
min 1 x 0.5 mm
2
(1 x AWG 20)
max. 2 x 2.5 mm
2
(2 x AWG 14)
