Eurotec EFX-EIA Series User manual

BA_X022
Operating instructions
EUROTEC Antriebszubehör GmbH | Bildstock 37 | DE-88085 Langenargen | [email protected] | www.eurotec.global | 29.10.2020 | Page 1 of 5
Product group: Limit switch box flex Product type: EFX...-EIA EN
Certifications:
EFX-EIA
Table of Contents
1. Device description.................................................................................................................................................................................................2
2. Intended use ......................................................................................................................................................................................................... 2
3. Labeling................................................................................................................................................................................................................. 2
4. Safe activation.......................................................................................................................................................................................................3
5. Assembly on actuators ......................................................................................................................................................................................... 3
6. Assembly on manual valves ................................................................................................................................................................................. 3
7. Electrical connection ............................................................................................................................................................................................ 3
8. Disassembly..........................................................................................................................................................................................................4
9. Adjusting the swivel range....................................................................................................................................................................................4
10. Connecting magnetic coils.................................................................................................................................................................................. 4
11. Outdoor use.........................................................................................................................................................................................................4
12. Maintenance........................................................................................................................................................................................................ 5
13. Malfunctions........................................................................................................................................................................................................ 5
14. Item number ....................................................................................................................................................................................................... 5
15. EU Declaration of Conformity ............................................................................................................................................................................. 5

BA_X022
Operating instructions
EUROTEC Antriebszubehör GmbH | Bildstock 37 | DE-88085 Langenargen | [email protected] | www.eurotec.global | 29.10.2020 | Page 2 of 5
Thank you for choosing a EUROTEC product. In doing so, you have chosen a quality product. To ensure functionality and your own safety,
please read these operating instructions carefully before beginning with the installation. Nevertheless, should you have any further
questions, please contact:
EUROTEC Antriebszubehör GmbH | Tel. [phone] - 0 | Fax. - 10 | [email protected]bal | www.eurotec.global
1. Device description
Limit switch boxes serve to provide feedback and control the position of industrial valves, which are activated using pneumatic actuators.
The shaft of the limit switch box has a positive connection with the shaft of the actuator and is rotated with the rotational movement of the
actuator. The actuating cams attached to the shaft, activate the installed sensors, which support the electronic signal transmission.
The flex Ex eb ia limit switch boxes are equipped with 1 to 4 Ex ia certified intrinsically safe proximity switches. That includes 1-4 inductive
proximity V3-sensors, 1-3 slot type sensors, 1-2 cylindrical sensors or 1 dual sensor.
2. Intended use
The flex Ex e ia limit switch box from the EUROTEC Antriebszubehör GmbH is intended for use in the explosive area of zones 1 and 2 with
gases, mists or vapours and zone 21 and 22 with combustible dust.
ATEX / IECEx EAC Ex (TR-CU-012)
II 2G Ex eb ia IIC/IIB T4-T6 Gb 1 Ex e ia IIC <<T6…T4>> Gb X
II 2D Ex tb IIIC T80°C-T135°C Db Ex tb IIC T80°C/T95°C/T130°C Db X
EPS 16 ATEX 1012 X / IECEx EPS 16.0006 X
Its approved for use in the following ambient temperature ranges:
T6/T80°C: -55°C/-25°C...+40°C
T5/T95°C: -55°C/-25°C...+60°C
T4/T135°C: -55°C/-25°C...+75°C
The approved ambient temperature varies, depending on the sealing compound and the installed switch type. You can find the ambient
temperature in the corresponding data sheet and on the product label. For the use to a minimum ambient temperature of -25°C the limit
switch boxes type EFX can also be fitted with a viewing glass in the cover housing. A lower temperature range down to -55°C applies to limit
switch boxes, which are made of components, that are at least suitable for this temperature.
The electrical input ratings are determined by the separately certified intrinsically safe inductive sensors that are used. You will find the
values for Ui, Ii, Pi, Ci and Li on the product label of your limit switch box as well as in the instruction manual of the sensor.
3. Labeling
The labeling on the housing is shown in Fig. 1 and varies depending on the installed switch type. You can find the number of the indicated
responsible office for the QM system and the serial number below the CE mark. It consists of the year of manufacture and the respective
order number.
Fig. 1: Labeling
The housings are not intended to be used as stepladders, to climb into the system. This can lead to damaging
them and having a negative effect on their function. If the housing is damaged, water as well as dirt and
combustible material can accumulate inside the housing. This can lead to a short circuit. Furthermore, the
device can heat up severely due to the accumulation and can cause an explosion.

BA_X022
Operating instructions
EUROTEC Antriebszubehör GmbH | Bildstock 37 | DE-88085 Langenargen | [email protected] | www.eurotec.global | 29.10.2020 | Page 3 of 5
4. Safe activation
To avoid mistakes, only specialists are permitted to set up, connect and put the devices into operation. The specialists must have expertise
in the protection types instrinsic safety Ex ia, increased safety Ex e and protection by enclosure Ex t as well as in all relevant regulations and
provisions for operating materials in explosive areas. The limit switch boxes are developed in compliance with the following harmonised
standards:
EN 60079-0:2012+A11:2013 (IEC 60079-0, Ed. 6.0)
EN 60079-11:2012 (IEC 60079-11, Ed. 6.0)
EN 60079-7:2007 (IEC 60079-7 Ed. 5.0)
EN 60079-31:2014 (IEC 60079-31 Ed. 2)
It is imperative to observe the following safety instructions prior to initial operation:
Failure to observe the safety instructions in these operating instructions and using or handling the device
improperly, releases us from any liabilty.
Furthermore, the warranty for the devices and accessory components will expire.
Check on the labeling, whether or not the existing device is suitable for your case of application.
Observe national regulations and provisions as well as the corresponding installation specifications.
Take suitable measures, to prevent unintentional activation or improper interferences with the device.
Remove any existing sealing plugs just before inserting the wires to avoid dirt in the housing.
Make sure the strain is sufficiently relieved on the connecting cables or lay them securely.
Check the approved conductor cross-sections as well as the approved tightening torques in the documentation for cable connections
Effectively protect the devices and cables against damages.
Avoid static charge on the cables.
Housing components made of metal must be included in the potential equalisation by means of appropriate assembly.
This device may only be operated in a fully assembled condition.
Never disconnect the connector cables while they have power.
5. Assembly on actuators
Using the enclosed mounting material, the modules can be quickly and easily assembled to the provided actuator according to VDI
(Association of German Engineers)/VDE (German Electrical Engineering Association) 3845.
1. Adjust your actuator to the final position, in which the groove of the actuator shaft is parallel to the actuator housing.
2. Now, place the box with the appropriate mounting bracket on the actuator.
3. The mounting bracket can now be screwed tightly onto the actuator using the provided lock screws (4 pcs.).
4. Unscrew the four cover screws and open the housing. Make sure you do not unscrew the screws too far; they should remain in the
cover.
5. Insert the system cable into the housing through the cable gland and connect the individual wires to the terminal block. When doing so,
please refer to the terminal diagram on the respective data sheet or on the cover of the housing and connect the housing to the
equipotential bonding.
6. Close the housing using the cover. When attaching the cover, please make sure that the seal is correctly positioned and tighten the
cover screws.
6. Assembly on manual valves
The boxes with an F05-connection on the bottom of the housing, can also be assembled on manually operated valves using our assembly kit
“MSH”. It is important that your manual valve has a head flange according to ISO 5211 and a threaded hole in the shaft. Please use the
“MSH” instruction manual for detailed assembly instructions. For the assembly onto the bigger sizes starting with F10, additional assembly
parts are needed. Please contact our sales team for assistance.
7. Electrical connection
You can find the approved cable diameter in the corresponding data sheet for the limit switch box. You can find the terminal diagram for the
wiring either on or in the cover of the housing as well as on the corresponding data sheet for the limit switch box.
When tightening the cable gland, please make sure that the base body of the cable gland, which is screwed in
place in the housing, does not rotate as well. This could make the sealing washer shift and it would then no
longer provide proper sealing. It is best to use 2 open-ended spanners for this purpose. One to secure the base
body of the cable gland and one to tighten the screw nut.

BA_X022
Operating instructions
EUROTEC Antriebszubehör GmbH | Bildstock 37 | DE-88085 Langenargen | [email protected] | www.eurotec.global | 29.10.2020 | Page 4 of 5
Standard terminals:
Klemme Hersteller Bescheinigung Leiterquerschnitt Mehrleiter Anzugsdrehmoment Abisolierlänge Farbe
MSB 2,5-RZK Phoenix PTB 08 ATEX 1075U 0,5 - 2,5mm2keine Zugfeder 8 mm grau
2703208... Phoenix PTB 06 ATEX 1034U 0,5 - 2,5 mm22x1,50 mm20,6 - 0,8 Nm 8 mm grau
If you have installed another Ex e terminal in the housing, then please find the connection data in the corresponding data sheet and the
corresponding type examination certificate for the terminal. (Minimum cable cross-section: 0.5 mm2/ max. power: 4A)
Standard cable glands:
Cable gland Manufacturer Certificate Size Cable diameter Material Colour
ESKE... WISK
A
PTB 13 ATEX 1015 X M20x1,5 red. 4 - 13 mm PA6 black
ESKE... WISK
A
PTB 13 ATEX 1015 X M20x1,5 7 - 13 mm PA6 black
GHG... CEAG PTB 99 ATEX 3128 X M25x1.5 8.0 - 17 mm PA6 black
If you have installed another Ex e terminal in the housing, then please find the connection data in the corresponding data sheet and the
corresponding type examination certificate for the cable gland.
8. Disassembly
During dismantling you must observe the instructions in Chapter 4.
1. Disconnect the device from the power supply.
2. Open the cover of the housing by unscrewing the 4 cover screws. Make sure that you do not unscrew the screws too far; they should
remain in the cover and not be able to fall out.
3. Disconnect the cables in the system from the terminal strip in the limit switch box.
4. Now, unscrew the 4 screws with which the bracket of the box is attached to the actuator and remove the limit switch box from the
actuator.
9. Adjusting the swivel range
The actuators are always preset to a swivel range of 0-90° by the EUROTEC Antriebszubehör GmbH. Should you require a different swivel
range for your application, please carry out the following steps:
1. Move the actuator to the required final position 1 and adjust the bottom actuator. To do so, press the actuator down on the outer ring
and turn it to the position, in which the switch is pressed. Let the actuator snap back up into the gearing again. (Fig. 4)
2. Move the actuator to the required final position 2 and adjust the top actuator. To do so, press the actuator down on the outer ring and
turn it to the position, in which the switch is pressed. Let the actuator snap back up into the gearing again.
3. Finally, check your default setting by switching the actuator several times.
10. Connecting magnetic coils
The flex Ex de t limit switch boxes from EUROTEC offer the option of connecting a maximum of two magnetic coil in one of the types of
protection Ex m, Ex dm or Ex d. (I max. 6A, min. 0,5mm²) For the connection of a magnetic coil replace one Ex e protection plug by an Ex e
cable gland M20x1,5 together with a suitable seal insert for your cable diameter. Ensure that the IP protection class as well as the ambient
temperature of your cable gland match at least the characteristics of the flex box housing. Verify that with the data sheet of your cable
gland. Matching cable glands can be purchased from EUROTEC:
Cable diameter: 7 - 13mm Part number: SE-KVM20x1,5SZ-EX
Cable diameter: 4 - 13mm Part number: SE-KVM20x1,5SZ-EX-RK
The cable for the magnetic coil connection needs to match the terminal block as well as the cable gland.
The wires of your cable need to be connected to the terminal block and possibly as well with the magnetic coil. Consider the referring
operation instructions of the coil manufacturer and the wiring diagram inside the switch box cover or on the technical data sheet of the limit
switch box. For the solenoid connection applies a minimum wire cross-section of 0,5mm2and a maximum current of 6A.
11. Outdoor use
If you would like to use the limit switch boxes outdoors (outdoor installation), the limit switch boxes should be equipped with an Ex e
pressure compensating element. The pressure compensating element prevents water condensation in the housing in the event of outdoor
temperature fluctuations. Please check whether or not there is a pressure compensating element. If not, you have to order respective limit
switch boxes. In this case, the addition to the item number is “-DAE”.

BA_X022
Operating instructions
EUROTEC Antriebszubehör GmbH | Bildstock 37 | DE-88085 Langenargen | [email protected] | www.eurotec.global | 29.10.2020 | Page 5 of 5
12. Maintenance
The limit switch boxes for ATEX areas may never be opened during operation or in an existing explosive atmosphere. Opening them can
cause an explosion. Therefore, maintenance work is only possible outside of the Ex area.
The cover screws can loosen in the event of strong vibrations or temperature fluctuations. Retighten the screws every two years. Any other
modifications to the device are prohibited!
13. Malfunctions
In the event of malfunctions, please check the lines, line connectors and the position of the cams. Furthermore, please check whether
condensation has accumulated in the housing and whether the valve and the actuator are functioning properly. Rectify any possible errors.
If this does not rectify the malfunction, disconnect the housing from the power supply voltage and contact one of the manufacturer’s
authorised and trained specialists.
14. Item number
Please refer to the related order code of the switch box series flex EFX.
15. EU Declaration of Conformity
EU-Declaration of Conformity
according to the Directive 2014/34/EU (ATEX-Directive)
We herewith confirm that the following named equipment for the use in hazardous areas does fulfill the requirements of the Directive
2014/34/EU in the delivered execution:
EFX...EIA... flex limit switch box. Housing aluminum
The equipment has been developed and designed in consideration of the following harmonised standards:
EN 60079-0:2012+A11:2013 Explosive atmospheres -
IEC 60079-0, Ed. 6.0 Part 0: Equipment - General requirements
EN 60079-7:2015 Explosive atmospheres -
IEC 60079-7, Ed. 5.0 Part 7: Equipment protection by increased safety "e"
EN 60079-31:2014 Explosive atmospheres -
IEC 60079-31, Ed. 2 Part 31: Equipment dust ignition protection by enclosure "t"
EN 60079-11:2012 Explosive atmospheres -
IEC 60079-11, Ed. 6.0 Part 11: Equipment protection by intrinsic safety "i"
Marking: II 2G Ex eb ia IIC T4-T6 Gb
II 2D Ex tb IIIC T80°C-T135°C Db
EU-Type Examination Certificate: EPS 16 ATEX 1 012 X
Bureau Veritas Consumer Products Services Germany GmbH
Businesspark A96, DE-86842 Türkheim
Ident.-No.: 2004
EU-Certificate Quality Assurance: EPS 19 ATEX Q 057
Bureau Veritas Consumer Products Services Germany GmbH
Businesspark A96, DE-86842 Türkheim
Ident.-No.: 2004
2020-01-15
Date General Manager: Melissa Berge