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Pizzato Elettrica Srl
via Torino, 1
36063 MAROSTICA (VI)
ITA LY
e-mail: info@pizzato.com
web site: www.pizzato.com
Phone: +39.0424.470.930
ZE_FOG125B24-EU
1 INFORMATION ON THIS DOCUMENT
1.1 Function
The present instruction manual provides information on installation, connection and
safe use for the following articles: NS ••••••••, NS ••••••••-N••, VN NS-F••.
1.2 Target audience
The operations described in this instruction manual must be carried out by qualified
personnel only, who are fully capable of understanding them, and with the technical
qualifications required for operating the machines and plants in which the safety de-
vices are to be installed.
1.3 Application field
These instructions apply exclusively to the products listed in paragraph Function, and
their accessories.
1.4 Original instructions
The Italian language version is the original set of instructions for the device. Versions
provided in other languages are translations of the original instructions.
2 SYMBOLS USED
This symbol indicates any relevant additional information.
Attention: Any failure to observe this warning note can cause damage or mal-
function, including possible loss of the safety function.
3 DESCRIPTION
3.1 Device description
The safety device described in this manual is defined as a coded, type-4 interlocking
device with lock and without contact acc. to EN ISO 14119.
The safety switches with solenoid and RFID technology to which these usage instruc-
tions refer are safety devices designed and implemented for the control of gates,
guards, enclosures, and doors in general, which are installed to protect dangerous
parts of machines.
3.2 Intended use of the device
- The device described in this manual is designed to be applied on industrial machines
for state monitoring of movable guards.
- The direct sale of this device to the public is prohibited. Installation and use must be
carried out by qualified personnel only.
- The use of the device for purposes other than those specified in this manual is
prohibited.
- Any use other than as expressly specified in this manual shall be considered unin-
tended by the manufacturer.
- Also considered unintended use:
a) using the device after having made structural, technical, or electrical modifica-
tions to it;
b) Using the product in a field of application other than as described in paragraph
TECHNICAL DATA.
4 INSTALLATION INSTRUCTIONS
Attention: Installing a protective device is not sufficient to ensure operator safe-
ty or compliance with machine safety standards or directives. Before installing
a protective device, perform a specific risk analysis in accordance with the key
health and safety requirements in the Machinery Directive. The manufacturer
guarantees only the safe functioning of the product to which this instruction
manual refers, and not the functional safety of the entire machine or entire
plant.
4.1 Actuation directions
The centring symbols on the device and actuator must be facing each oth-
er when the guard is closed.
4.2 Selection of the actuator type
Attention: The device is available with two types of RFID actuator: with high
(article VN NS-F41) or low (article VN NS-F40) coding level. If the chosen actu-
ator has a low coding level, the additional specifications given in Std. EN ISO
14119:2013 paragraph 7.2 must be applied during the installation.
Attention: If the chosen actuator has a low coding level, any other actuators
with low coding level present in the same place where the device has been in-
stalled must be segregated and kept under strict control in order to avoid any
bypassing of the safety device. If new actuators with low coding level are fit-
ted, the original actuators with low coding level must be disposed of or ren-
dered inoperable.
It is advisable to use actuators with high coding level to make the installation
safer and more flexible. In this way, no device screening, installation in inacces-
sible zones or other requirements specified by the Std. EN ISO 14119 for low
coding level actuators will be necessary.
4.3 Selection of the operating principle
Attention: The switch is available with two operating principles:
1) Operating principle for versions NS D•••••••, NS G•••••••, NS L•••••••:
locked actuator with de-energised solenoid (spring lock, release with activa-
tion of inputs IE1/ IE2).
2) Operating principle for versions NS E•••••••, NS H•••••••, NS M•••••••:
locked actuator with energised solenoid (lock with activation of inputs IE1/IE2,
spring release).
The first operating principle (spring lock) maintains the actuator lock even if the
machine is disconnected from the power supply. Therefore if the machine has
dangerous movements with inertia, inaccessibility to dangerous parts (actuator
locked) is ensured, even in the event of a sudden power failure. If the machine
structure allows a person to enter the danger area with the whole body and possibly
end up being stuck inside the machine, the device must be provided with an escape
release button, in order to allow the trapped person to get out even in case of power
failure.
The second operating principle (lock with activation of IE1/IE2 inputs) keeps the
actuator lock only when the machine is connected to the power supply. Therefore,
before choosing this operating principle, carefully evaluate all dangers deriving from
sudden power failure with a consequent possible immediate actuator release.
The choice of operating principle must always be made following a risk analysis of
the specific application.
In case of machines without inertia, i.e. with dangerous elements being imme-
diately blocked as soon as the guard is opened, for which a device with lock has
been chosen merely to safeguard the production process, the first or the the
second operating principle can both be used indifferently.
4.4 Selection of the safety outputs actuation mode
Attention: the device is available with three different safety outputs actuation
modes:
- Mode 1 (NS D•••••••, NS E••••••• items): active safety outputs with insert-
ed and locked actuator.
- Mode 2 (NS G•••••••, NS H••••••• items): active safety outputs with insert-
ed actuator
- Mode 3 (NS L•••••••, NS M••••••• items): OS1 safety output active with
inserted and locked actuator and IS1 active, OS2 safety output active with
inserted actuator and IS2 active.
Mode 1 activates the OS safety outputs when the actuator is both inserted and
locked, so that the actuator cannot be extracted with the safety outputs activated. In
mode 1 the device is coded, type 4 (interlock with lock) acc. to EN ISO 14119.
For specific applications, mode 2 allows the actuator to be released while keeping the
safety chain enabled (normally for specific, low inertia applications) when the hazard
does not continue after opening the guard. In mode 2 the device is coded, type 4 (in-
terlock without lock) acc. to EN ISO 14119.
Mode 3, for specific applications, provides a channel with “mode 1” functionality, and
a channel with “mode 2” functionality. This allows emulation of electromechanical in-
terlocking devices with lock, without complex machine wiring modifications.
Using modes 2 and 3 must always follow a risk analysis on the specific application,
with particular focus on the function of cascaded mode 3 devices.
4.5 Fixing of the device
Before fixing the device, it is possible, if necessary, to adjust the
position of the release device (if present) and of the connection
output, in order to orient them in the position best suited to the ap-
plication. Removing the 4 fixing screws it is possible to rotate the
modules in 90° steps. The connection output module has a me-
chanical limit stop that prevents rotation of more than 270°.
Attention: Do not force rotation of the connection output
module beyond 270° as this could cause damage to the de-
vice.
After correct positioning of the modules, retighten the fixing
screws with a torque between 0.8 and 1.2 Nm and close the holes
with the provided caps in order to prevent the build-up of grime.
The device may be fixed in two directions using the fixing holes on
the front or on the side of the housing.
Attention: Always affix the device with
M5 screws with resistance class 8.8
or higher and flat seating heads.
Install the screws with medium resistance
thread locker with the number of threads
engaged being equal to or greater than the
screw diameter. The tightening torque of the
screws is 3.0 Nm.
For the versions with long housing, always
affix the device with at least 3 screws; only
2 screws are required for the other versions.
The device must never be fixed with less
than the specified number of screws.
It is advisable to install the device in the top part of the door, in order to prevent
any dirt or work residues from getting inside the hole where the actuator is to
be introduced. In order to avoid device bypassing, it is advisable to fix the de-
vice body to the machine frame so that it cannot be removed by closing all fix-
ing holes with the suitable protection caps provided.
For versions with integrated control devices, the switch is to be installed at a
height at which the operator can easily reach the control devices as specified in
standard EN 60204-1. If necessary, the switch can also be installed turned over
so that the control devices are located at the top.
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