1 INFORMATION ON THIS DOCUMENT
1.1 Function
These operating instructions provide information on installation, connection and safe
use for the following articles:
FD
••••-M2-EX7, FL ••••-M2-EX7, FM ••••-M2-EX7.
1.2 Target audience
The operations described in these operating instructions may be performed only by
personnel who are qualified to install devices in ATEX environments with explosion
hazards, who are fully capable of understanding them, and who possess the technical
qualifications required for operating the machines and plants in which the safety
devices 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
malfunction, including possible loss of the safety function.
3 DESCRIPTION
3.1 Device description
The device described in these operating instructions is a position switch composed of a
metal housing containing electrical contacts driven by actuator heads.
3.2 Intended use of the device
- The device described in these operating instructions is designed to be applied to indu-
strial machines with or without risk of explosion.
- The direct sale of this device to the public is prohibited.
- The use of the device for purposes other than those specified in these instructions is
prohibited.
- Any use other than as expressly specified in these instructions shall be considered
unintended by the manufacturer.
- Also considered unintended use:
a) using the device after having made structural, technical, or electrical modifications
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 safety
or compliance with machine safety standards or directives. Before installing a pro
-
tective 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 these operating instructions refer, and not the
functional safety of the entire machine or entire plant.
For assembly and operating instructions of articles F•
••93-M2-EX7,
F
•
••99-M2-
EX7,
F
•
••R2-M2-EX7,
F
•
••95-M2-EX7,
F
•
••78-M2-EX7•,
F
•
••83-M2-EX7,
F
•
••84-M2-
EX7, please refer to the operating instructions for the versions of the article to be used
in standard environments (with no explosion hazard).
4.1 General conditions
- Please read these operating instructions carefully before installation to ensure proper
operation of the device and the safety of the application. Please contact our Technical
Office (see paragraph SUPPORT) for any remaining issues or questions.
- The general engineering rules, specific national regulations and the applicable directi-
ves must be observed when selecting and using the devices.
- The utilization implies compliance and knowledge of the ATEX Directive 2014/34/EU.
For use in potentially explosive areas, the installation rules stipulated by the technical
rules of the area for which the device is designed must be observed.
- Failure to comply with the requirements of the operating instructions or incorrect use of
the device during operation can lead to the damage of the device and the loss of the sa-
fety function performed by the device itself. This will result in termination of the warranty
on the item and will release the manufacturer from any liability.
- Store the products in their original packaging, in a dry place with temperature between
-40°C and +70°C
Attention: Before proceeding with the installation of the device, ensure that the
markings on the product are compatible with the ATEX rating of the site where the
device will be used. Failure to comply with this requirement can cause serious injury
to persons, including death, and/or serious damage to property.
Devices
Markings
Certificate
FD ••••-M2-EX7
FL ••••-M2-EX7
FM ••••-M2-EX7
I M2 Ex ia I Mb
II 2G Ex ia IIC T6 Gb
TUV IT 21 ATEX 061
TUV IT 21 ATEX 076 Q
Attention:
These devices must be introduced into an intrinsically safe system
containing only components that do not compromise the intrinsic safety level required
by the class of protection. Each device must only be used:
- for a single intrinsic safety system, on switches with contact blocks 20, 21, 22, 28,
29, 30, 33, 34, 66, 67.
- for one or two intrinsic safety systems, on switches with contact blocks 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 18, 37.
Example of code structure:
FD 2038-M2-EX7
Actuator type
Contact block type
Housing type
4.2 Instruments
Normal screwdrivers and tool keys are required for the installation of these devices.
4.3 Electrical parameters
Attention: The electrical parameters are indicated on the product, in these ope-
rating instructions and on its certificate and must be strictly observed.
- Maximum switching voltage: 30 Vdc
- Maximum switching current: 2.5 A
4.4 Installation
The device can be fastened in any position.
Always use the same number of screws as the number of holes on the housing when
mounting the device. Install the screws with medium resistance thread locker with the
number of threads engaged being equal to or greater than the screw diameter. The
device must never be fixed with fewer screws than holes available on the housing.
The diameter and property class of the screws must be suitable for the expected
loads. Tighten with a torque of between 2 and 3 Nm.
- Tighten the cover, head and lever screws with a torque of between 0.8 Nm and 1.2
Nm.
- Do not exceed the maximum actuation travel.
4.5 Installation requirements
- Do not perform any operation inside the device when there is voltage.
- Maintenance in the ambient temperature range (-20° C to +60° C) and compliance
with the instructions provided with the device are requirements for proper operation.
- During installation and connection, make sure that the conductors are correctly po
-
sitioned and clamped in the terminals.
- Tighten the internal conductor terminals with a torque of between 0.6 and 0.8 Nm.
- Always use a cable gland suitable for a potentially explosive use environment and
for the cable section. Pursuant to EN 60529, the cable gland must have a degree of
protection IP at least equal to or greater than the IP of the device.
- The cable glands must be cable glands for Ex equipment or Ex components and
must not invalidate the specific features of the device's protection type
- To connect the external ground cable, use an eyelet terminal.
- Do not disassemble the device. If it is necessary to adjust the head of the device,
reposition the head in the base with greatest care after adjusting it.
- 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 the internal contact block.
- During and after the installation do not pull the electrical cables connected to the
device. If excessive tension is applied to the cables (which are not supported by an
appropriate cable gland), the contact block of the device may be damaged.
- When the wiring is complete and before activation, verify that the device identification
code corresponds both on the cover and on the housing.
- The general installation and assembly requirements described in EN 60079-14 must
be complied with.
4.6 Testing
No test period is required when installation is performed by qualified personnel.
5 INSTRUCTIONS FOR PROPER USE
5.1 Installation
- Do not modify the device for any reason.
- Do not stress the device with bending or torsion.
- Do not exceed the tightening torques specified in the present operating instructions.
- If the device performs an operator protection function in accordance with EN ISO 14119,
improper installation or tampering can cause serious injury to persons and even death.
- 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 speci-
fied, the device may not provide the operator with efficient protection.
- The safety category of the system (according to EN ISO 13849-1), including the safety
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.
- Before installation, ensure that the connection cables are not powered.
- 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 switch fitting surface must always be smooth and clean.
- The documents necessary for a correct installation and maintenance are always availa
-
ble 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).
Always attach the following operating instructions to the manual of the machine in which
the device is installed.
3/10
Pizzato Elettrica Srl
via Torino, 1
36063 MAROSTICA (VI)
ITALY
e-mail: [email protected]
web site: www.pizzato.com
Phone: +39.0424.470.930
Fax:
+39.0424.470.955
ZE FOG302A21-EU
