TR-Electronic A 100 Series User manual

TR-ECE-BA-GB-0138 v04 08/20/2021
User Manual
_Basic safety instructions
_Intended use
_Product description
_Technical data
_Explosion protection characteristics
_Assembly
TR-Explosionsschutzgehäuse
A*W70
Original
Rotary Encoder A**100*
for use in
potentially explosive areas
Certifications
- IBExU 17 ATEX 1042 X
- IECEx IBE 21.0024 X
0123
II 2 G Ex db IIC T6…T4 Gb
II 2 D Ex tb IIIC T80°C…T130°C Db
Date of manufacture: DD.MM.YYYY

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TR-Electronic GmbH
D-78647 Trossingen
Eglishalde 6
Tel.: [phone]
Fax: [phone]
E-mail: [email protected]
http://www.tr-electronic.de
Copyright
This manual, including the therein contained images, is protected by copyright. Third
party usage of this manual, which deviates from copyright provisions, is prohibited.
Reproduction, translation as well as electronic and photographic archiving or modifi-
cation requires the author's written authorization. Infringements will lead to liability for
damage compensation.
The right to amendment is reserved
The right to make any changes in the interest of technical progress is reserved.
Document information
Edition-/Rev.-Date: 08/20/2021
Document-/Rev.-No.: TR-ECE-BA-GB-0138 v04
File name: TR-ECE-BA-GB-0138-04.DOC
Author: MÜJ
Text
Cursive or bold text represents the title of a document or is used for emphasis.
Courier-text shows text which is visible on the display or screen as well as soft-
ware menu-selections.
< > refers to keys on your computer keyboard (e.g. <RETURN>).

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Table of contents
Table of contents................................................................................................................................ 3
Amendment-index.............................................................................................................................. 5
1 General ............................................................................................................................................. 6
1.1 Type designation code, rotary encoder with explosion protection enclosure......................... 6
1.2 Scope...................................................................................................................................... 7
1.3 Other applicable documents................................................................................................... 7
1.4 Relevant directives and standards ......................................................................................... 8
1.5 Used abbreviations / Terms.................................................................................................... 8
1.6 Product description................................................................................................................. 9
2 Basic safety instructions................................................................................................................ 10
2.1 Symbol- and note definition.................................................................................................... 10
2.2 Obligation of the operator prior to commissioning.................................................................. 11
2.3 General dangers with the use of this product......................................................................... 11
2.4 Intended use........................................................................................................................... 12
2.5 Non-intended use ................................................................................................................... 13
2.6 Usage in safety-related applications....................................................................................... 13
2.7 Warranty and liability .............................................................................................................. 14
2.8 Organizational measures........................................................................................................ 14
2.9 Personnel selection and -qualification; basic obligations....................................................... 15
2.9.1 Electrical installations design, device selection and erection................................. 15
2.9.2 Inspection, maintenance and repair ....................................................................... 15
2.10 First commissioning / Commissioning.................................................................................. 16
2.11 Assembly, installation and dismantling................................................................................. 16
2.12 Inspection, maintenance and repair ..................................................................................... 17
2.13 Special conditions for safe use, marking "X"........................................................................ 18
3 Transport / Storage ......................................................................................................................... 19
4 Technical data.................................................................................................................................. 20
4.1 Power supply .......................................................................................................................... 20
4.2 Mechanical characteristics ..................................................................................................... 20
4.3 Environmental conditions........................................................................................................ 20
4.5 Explosion protection characteristics....................................................................................... 21
4.5.1 Ex-labeling, gas ...................................................................................................... 21
4.5.2 Ex-labeling, dust ..................................................................................................... 22
5 Assembly.......................................................................................................................................... 23
5.1 Safety-related applications..................................................................................................... 23

Table of contents
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5.2 NON safety-related applications............................................................................................. 24
5.2.1 Solid shaft............................................................................................................... 24
5.2.1.1 Flange-assembly..........................................................................................................24
5.2.1.2 Clamp flange - assembly..............................................................................................25
6 Temperatures / IP protection classes / Enclosure materials / Speeds...................................... 26
6.1 Aluminum –Explosion protection enclosure .......................................................................... 26
6.2 Stainless steel - Explosion protection enclosure.................................................................... 27
7 Connection / Shielding.................................................................................................................... 29
7.1 Versions.................................................................................................................................. 29
7.2 Requirements for cable inlets and sealing plugs.................................................................... 30
7.3 Cable requirements ................................................................................................................ 31
7.4 Connection / Perform shielding .............................................................................................. 32
7.5 Close securely the connection cap......................................................................................... 35
7.6 Equipotential bonding conductor............................................................................................ 36
8 Disposal............................................................................................................................................ 36
9 Annex................................................................................................................................................ 37
9.1 ATEX certificate...................................................................................................................... 37
9.2 EU declaration of conformity, A**100 + Functional safety...................................................... 40
9.3 IECEx certificate..................................................................................................................... 42
9.4 Accessories ............................................................................................................................ 46
9.5 Drawing................................................................................................................................... 47

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Amendment-index
Amendment
Date
Index
First edition
11/19/19
02
EU declaration of conformity updated
08/18/20
03
- Certifications according to IECEx system
- "X" requirements, such as ESD …
- Correction of the mechanical characteristics -> speed class:
"shaft seal" omitted, see chapter 4.2
08/20/21
04

General
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1 General
This -User manual contains all relevant explosion-safety information and includes
the following topics:
Basic safety instructions
Intended use
Product description
Technical data
Explosion protection characteristics
Assembly
Since the documentation has a modular structure, this -User manual represents a
supplement to the other documentation such as for example product data sheets, di-
mensional drawings and leaflets etc.
The -User manual is included, but can also be ordered separately.
1.1 Type designation code, rotary encoder with explosion protection enclosure
A
* 1
* 2
* 3
* 4
-
* 5
* 5
* 5
* 5
* 5
Position
Notation
Description
A
A
Explosion protection (ATEX, IECEx)
* 1
E
Optical scanning unit 15 bit
O
Optical scanning unit > 15 bit
M
Magnetic scanning unit
D
Redundant dual scanning unit
P
Scanning unit with magnetical code disk
* 2
V
Solid shaft
S
Blind shaft
* 3
100
External diameter 100 mm
* 4
S
Single turn
M
Multi turn
* 5
-
Consecutive number
* = Wild cards

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1.2 Scope
This -User manual applies exclusively to the rotary encoder with explosion-proof
housing type A**100*-***** in conjunction with the temperature classes or surface
temperatures listed below:
Gas, temperature class T4: II 2 G Ex db IIC T4 Gb
Gas, temperature class T5: II 2 G Ex db IIC T5 Gb
Gas, temperature class T6: II 2 G Ex db IIC T6 Gb
Dust, max. surface temperature T130°C: II 2 D Ex tb IIIC T130°C Db
Dust, max. surface temperature T95°C: II 2 D Ex tb IIIC T95°C Db
Dust, max. surface temperature T80°C: II 2 D Ex tb IIIC T80°C Db
The products are labelled with affixed nameplates and are components of a system.
1.3 Other applicable documents
the operator's system-specific operation instructions
this -User manual
interface-specific user manual
Pin assignment
Product data sheet
optional: Safety Manual for safety-related applications

General
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1.4 Relevant directives and standards
The rotary encoder with explosion protection enclosure was developed, constructed
and finished under compliance with the applicable European- or International stand-
ards and directives.
EU-Directive 2014/30/EU
Electromagnetic compatibility
EU-Directive 2014/34/EU
Equipment and protective systems intend-
ed for use in potentially explosive atmos-
pheres
EN 61000-6-2
EMC:
Interference immunity
EN 61000-6-3
EMC:
Interference emission
EN 60079-0 /
IEC 60079-0
Explosive atmospheres:
General requirements
EN 60079-1 /
IEC 60079-1
Explosive atmospheres:
Equipment protection by flameproof enclo-
sures "d"
EN 60079-31 /
IEC 60079-31
Explosive atmospheres:
Equipment dust ignition protection by en-
closure "t"
EN 60529
Degrees of protection provided by enclo-
sures (IP code)
1.5 Used abbreviations / Terms
A**100*
Rotary encoder with explosion protection enclosure 100 mm, all variants
CoC
Certificate of Conformity
EU
European Union
EMC
Electromagnetic compatibility
ESD
Electro Static Discharge
IEC
International Electro-technical Commission
IECEx
International Electro-technical Commission
IEC certification system for potentially explosive areas
VDE
Association for Electrical, Electronic & Information Technologies

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1.6 Product description
The rotary encoder type A**100* with built-in systems is used for the detection of
changes in angle for fixed installations in potentially explosive gas and dust atmos-
pheres of Ex-Zone 1 or Ex-Zone 21. The rotary encoder consists of a flameproof en-
capsulated enclosure (6) made of stainless steel or aluminum. The evaluation elec-
tronics for detection of the position change is installed by TR-Electronic. The signal of
the position change respectively angle change is transmitted by a bearing-mounted
shaft (5) by means of a rotary encoder.
The explosion protection enclosure consists of an electric part, the electronics with sen-
sor and connection cable, and non-electric mounting components such as the mounting
flange (4) and the shaft (5). The transmitting of the torque is performed about an external
coupling.
The electrical assembly is connected via cables and up to three cable entries (1). The
cable entries are available as axial outlets (A) or as radial outlets (B). The connection
is either pre-assembled by TR-Electronic or can be performed by the customer.
Figure 1: Examples of enclosures with axial (A) and radial (B) cable inlets
(1)
1…3 Cable inlets M20x1.5
(2)
6 Fastening screws M4x40-T20 A4-50 according to DIN EN ISO 14580
(3)
Connection cap
(4)
Flange
(5)
Shaft
(6)
Flameproof encapsulated enclosure
(7)
Sealing plug

Basic safety instructions
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2 Basic safety instructions
2.1 Symbol- and note definition
means that death or serious injury can occur if the required
precautions are not met.
means that minor injuries can occur if the required precau-
tions are not met.
means that damage to property can occur if the required
precautions are not met.
indicates important information or features and application
tips for the product used.
signifies that respective ESD-safety measures according to
DIN EN 61340-5-1 supplement 1 are to be observed.

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2.2 Obligation of the operator prior to commissioning
As an electronic device and for use in potentially explosive areas, the explosion pro-
tection enclosure with integrated measuring system is subject to the provisions of the
EU-directives EMC and ATEX.
Therefore, commissioning of the device is only allowed once it has been established
that the system/machine in which the device is to be installed, complies with the provi-
sions of the EU-directives EMC and ATEX, the harmonized standards, European
standards or the respective national standards.
For use in potentially explosive atmospheres outside the European single market
(EU), the device has an approval according to the IECEx system. The corresponding
national standards and international standards (IECEx) must therefore be observed
during commissioning.
2.3 General dangers with the use of this product
The product, hereafter referred to as equipment is manufactured using the latest
technology and according to recognized safety regulations. Nevertheless, non-
intended use can cause danger to life and limb of the user or third parties or
cause damage to the equipment and other property!
Only use the equipment for its intended use, with safety- and danger awareness and
in compliance with the Other applicable documents!
The operator of an electrical system in a potentially explosive environment should
keep the equipment in a proper condition, it should be properly operated and moni-
tored and maintenance- as well as repairs are to be performed. This also includes in-
spection of the equipment for possible transport damage prior to commissioning.
De-energize the system before carrying out wiring work or opening and closing elec-
trical connections. The equipment may not be operated in case of defects and dust
deposits must be removed basically.

Basic safety instructions
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2.4 Intended use
The equipment is used for the detection of angular movements as well as the pro-
cessing of the measurement data for a downstream control through industrial pro-
cess- and control procedures.
The equipment is a fixed-installation device and may only be used in potentially ex-
plosive areas for
Gases (G) within the Ex-Zones 1 and 2
Dust (D) within the Ex-Zones 21 and 22:
Device
group
(ATEX)
Device
category
Device protection
level (EPL)
Zone
0 / 20
1 / 21
2 / 22
II
2G / 2D
Gb / Db
no
yes
yes
The assembly takes place through the established attachment possibilities. The elec-
trical data provided on the nameplate, as well as the device category, temperature
class, IP protection class, speed etc. for the place of use are to be observed.
The operating temperature range of the equipment has been divided into the ranges
-40°C / -20°C…+40 °C / +50 °C / +60 °C / +75 °C
The maximum temperature depends on
the temperature class (Gas: T4 / T5 / T6; Dust: T130°C / T95°C / T80°C)
the IP protection class (IP65 / IP67)
the material of the explosion protection enclosure (aluminum / stainless steel)
the speed (3000 min-1 / 6000 min-1)
and the power class (3 W / 6 W)
A corresponding classification for each type is shown in chapter 6 from page 26 on-
wards, a compact table overview is presented in the type-examination certificate, see
chapter 9.1 on page 37.
The actual operating temperature range for the equipment must therefore be taken
from the nameplate.
Intended use also includes:
observation of all instructions contained in the other applicable documents,
observation of the nameplate, type examination certificate, certificate of conformi-
ty (IECEx CoC) and possible prohibition- or instruction labels on the equipment,
observation of the enclosed documents,
operating of the equipment within the limits indicated in the technical data.

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2.5 Non-intended use
Risk of death, bodily injury or damage resulting from non-intended use of
the equipment!
Since the equipment in the basic version is not a safety component ac-
cording to the EU-machine directive, a plausibility test of the measuring-
system-values has to be performed through the downstream control.
It is compulsory for the operator to incorporate the equipment into their own
safety system.
The following uses are especially prohibited:
- in environments with an explosive atmosphere of the Zones 0 and 20
- for medical aims according to the directive for medical devices
- commissioning of the equipment if the nameplate is no longer readable
or is completely missing.
2.6 Usage in safety-related applications
For usage in safety-related applications the safety measuring system is installed into
the explosion protective enclosure A**100*.
The products are labeled with an additional safety marking on the nameplate:
SIL…, PL…, KAT…
The "Intended use", as well as all information for safe usage of the safety measuring
system in safety-related applications are contained in the safety manual.
The safety measuring system built-in into the explosion protection enclosure can
therefore be used for safety-related applications in explosive atmospheres.
As a result of the usage in safety-related applications additional requirements arise in
relation to the assembly of the measuring system (fault exclusion).
These additional assembly requirements are component of the safety manual and
must be taken into account. In general, the requirements and acceptance conditions
for the complete system must be taken into account for mounting.

Basic safety instructions
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2.7 Warranty and liability
The "General terms and conditions" (“Allgemeine Geschäftsbedingungen”) of the
company TR-Electronic GmbH apply in general. This will be available to the operator
with the contract confirmation or –conclusion at the latest. Warranty- or liability
claims with regards to personal- and property damage are excluded, if they are the
result of one or more of the following causes:
Non-intended use of the equipment.
Improper assembly, installation, commissioning, programming, maintenance
or dismantling of the equipment.
Improperly executed work on the equipment by unqualified personnel.
Operating of the equipment in the presence of technical defects.
The performance of unauthorized mechanical or electrical modifications of the
equipment.
The performance of unauthorized repairs
Catastrophic incidents caused by external forces or acts of God.
2.8 Organizational measures
The other applicable documents must always be kept within reach in the equip-
ment's operating location.
In addition to the other applicable documents, the generally applicable legal regu-
lations and other mandatory directives for work safety, accident prevention and
environmental conservation are to be observed and conveyed.
The applicable national-, site- and system-specific provisions and requirements
are to be observed and conveyed.
The operator has the obligation to point out any special operational features and
requirements to the personnel.
Before starting work, the personnel responsible for work on or with the equipment
must have read and understood the -User manual, in particular the chapter on
“Basic safety instructions”.
The nameplate and possible affixed prohibition- or instruction labels on the
equipment must be kept in a readable condition.
Do not perform any mechanical or electrical modifications to the equipment, ex-
cept those which are specifically described in the other applicable documenta-
tions.
Repairs may only be performed by the manufacturer, or by a person or body who
carries the manufacturer's authorization.

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2.9 Personnel selection and -qualification; basic obligations
2.9.1 Electrical installations design, device selection and erection
The project development of electrical systems, the selection of the devices and the in-
stallation in potentially explosive atmospheres may only be performed by persons
whose training includes instruction in various types of ignition and installation tech-
niques, applicable regulations and prescriptions as well as general principles of the
Zone-classification. The persons must have the relevant competence for the type of
work to be performed.
The personnel must regularly undergo corresponding further training or courses.
For definitions on the knowledge, expertise and competence of the "responsible per-
sons", "manual workers" and "planners", the EN/IEC 60079-14 standard is to be addi-
tionally consulted [suppliers e.g. Beuth Verlag GmbH, VDE-Verlag GmbH].
2.9.2 Inspection, maintenance and repair
The inspection, maintenance and repair of electrical systems in potentially explosive
environments may only be performed by experienced personnel who have also
gained knowledge on the various types of ignition and installation procedures, the re-
quirements of the EN/IEC 60079-17 standard, relevant national provisions and com-
pany regulations for the system as well as on the general principles of the Zone-
classification during their training.
Personnel are to undergo appropriate further training or instruction regularly. Proof of
the relevant experience and completed training must be available.
For definitions on the knowledge, expertise and competence of the "responsible per-
sons", "expert person with leadership functions" and the "performing personnel", the
EN/IEC 60079-17 standard is to be additionally consulted [suppliers e.g. Beuth Ver-
lag GmbH, VDE-Verlag GmbH].

Basic safety instructions
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2.10 First commissioning / Commissioning
Prior to the first commissioning the equipment is to be checked regarding its suitability
in the respective zone according to its labeling. The values indicated on the name-
plate are not to be exceeded. With use of the equipment in areas which are potentially
explosive because of dust, a deposit of dust on the top-side of the equipment shall be
avoided. Here the installation of an additional covering may be required in circum-
stances where the deposit of dust cannot be reliably avoided.
The operational safety of the equipment and the correct functional arrangement of the
equipment inside the plant must be checked before commissioning. It may only be
used in a clean and undamaged condition.
2.11 Assembly, installation and dismantling
With installation and operation of the explosion protective equipment, one should con-
sider protection against hazardous environmental influences which limit the intended
use of the equipment. This could be protection against aggressive fluids or weather
protection for example. During installation, the EN/IEC 60079-14 as well as other na-
tional standards and regulations applicable at the installation site are to be adhered to.
The information on the nameplate and in the type examination certificate must be
complied with.
The assembly of the equipment takes place according to the enclosure's established
mounting possibilities, but impacts on the shaft such as from hammer blows are to be
avoided.
When bolts are screwed into the drilled blind holes, at least one thread winding is to
remain free at the drill base.
When the equipment is connected, the cleavage surfaces shall not be damaged, the
O-ring must be present and may not have any signs of wear, also see Figure 13 on
page 35.
If cable inlets or dummy plugs are mounted, the threads may not be damaged. In par-
ticular, the cable inlet must be suitable for the required cable diameter. The used ca-
ble inlets respectively dummy plugs must have the igniting type of protection "d" for
flameproof encapsulation.
In potentially explosive areas the connection lines are to be routed in such a way that
they are protected from damage and mechanical failure. The individual wires must not
be damaged. The maximum connection information on the nameplate and also the
references in chapter “Special conditions for safe use, marking "X" ”on page 18 are
to be observed.
For metal enclosures in potentially explosive areas an equipotential line with at least
4 mm2is required.

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Wiring work, opening and closing of electrical connections may only be performed
with the power switched off.
Do not perform any welding work once the equipment has already been wired and
switched on.
Touching the equipment-connection contacts with bare hands is to be avoided, or
the respective ESD-protective measures are to be implemented.
2.12 Inspection, maintenance and repair
The operator of an electrical system in a potentially explosive environment must keep
the equipment in a good condition, operate it properly, monitor it and maintenance and
repair work must be performed, also see EN/IEC 60079-17 in this respect.
Maintenance work and defect repairs may only be performed by trained professionals.
Before the maintenance or repair, the specified safety precautions are to be observed.
The warning notes on the equipment and in the other applicable documents are to be
adhered to!
The applicable laws and directives are complied with before recommissioning.
The existing thread pitches must be protected. They may not be subsequently modi-
fied or painted.
The replacement of defective parts of the flameproof enclosure and also the connec-
tion cap may only be performed by the manufacturer. Interchangeable components
such as the O-Ring for the connection cap and fastening screws shall be requested as
original part in the event of absence or damage, see chapter 9.4 on page 46.
The equipment does not require any maintenance by the operator. Nevertheless,
inspections must be performed at regular intervals:
Visual inspection
- of the O-Ring in the connection cap for wear and tear
(whenever the connection cap is opened)
- of the flameproof enclosure for damages
- of the cables for external damages
- for dust deposits
Checking of the cable entries for a tight fit
In case of damages, the equipment is to be taken out of service immediately and
to be repaired by the manufacturer!
The general instructions for repairs are to be adhered to, see the chapter
" Special conditions for safe use, marking "X" " on page 18.

Basic safety instructions
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2.13 Special conditions for safe use, marking "X"
The "X"-symbol in the certificate numbers:
“IBExU 17 ATEX 1042 X”and “IECEx IBE 21.0024 X” are used to indicate special
conditions for use:
The maximum ambient temperature of the equipment depends on the temperature
class, the design with shaft seal (IP67) or without shaft seal (IP65), the material of
the explosion protection enclosure, the maximum power dissipation and the
speed. A corresponding classification for each type is shown in chapter 6 from
page 26 onwards; a compact table overview is presented in the type-examination
certificate, see chapter 9.1 on page 37. The actual operating temperature range
for the equipment must therefore be taken from the nameplate.
Optionally, the equipment may be fitted with cable inlets, the conditions and safety
instructions contained in the relevant certification must be observed.
In general, selected components, such as cables, cable inlets and sealing plugs,
must be suitable and certified for the potentially explosive area and ambient tem-
perature used. For this purpose, the guidance given in EN/IEC 60079-14 shall be
taken into account, in particular to the topics "Cables and wiring systems", "Cable
entry systems and blanking elements" as well as the multiple given notes to the
topic "Additional requirements for type of protection "d" –Flameproof enclosures".
Concrete requirements for cable inlets and sealing plugs, see chapter 7.2 on
page 30.
When the equipment is used at ambient temperatures ≥+40 °C, the selected con-
necting cable shall have an increased temperature resistance, see chapter 7.3 on
page 31.
Glands for cable entries that are not required must be sealed permanently using
closures appropriately certified for the group IIC according to EN/IEC 60079-1
(Explosive atmospheres). The component manufacturer's assembly and safety in-
structions must be complied with.
Contrary to the passage in the certificate numbers
IBExU17ATEX1042 X and IECEx IBE 21.0024 X:
"Repairs of the flameproof joints must be made in compliance with the construc-
tive specifications provided by the manufacturer. Repairs must not be made on
the basis of values specified in tables 3 and 4 of EN/IEC 60079-1."
any type of repair to the equipment is prohibited. The repair of the flameproof
joints is an option which is not currently provided for.
Only the fastening screws, M4x40-T20 A4-50 according to DIN EN ISO 14580,
specified by the manufacturer shall be used for the connection cap, see chapter
9.4 on page 46.
To avoid electrostatic charges, strong charge-generating processes, such as par-
ticles moving rapidly along a surface, pneumatic transport of dust and the spray-
ing of charges during an electrostatic coating process, must be excluded when us-
ing the equipment in potentially explosive atmospheres.
The connection of the free ends of the cables must either take place outside of the
potentially explosive area or within of an equipment which is permitted for the re-
spective device category.

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3 Transport / Storage
Transport –instructions
Do not drop the device or allow hard impacts!
Only use the original packaging!
Inappropriate packaging material may cause damage to the device during transport.
Storage
Storage temperature: -30 to +80°C
Store in a dry place

Technical data
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4 Technical data
4.1 Power supply
Nominal Voltage ...................................................
24 V DC
Power consumption
Power class............................................................
3.0 W
Power class............................................................
6.0 W
4.2 Mechanical characteristics
Mechanically permissible speed
Speed classes........................................................
3000 min-1 respectively 6000 min-1 ,
see chapter 6 starting from page 26
Shaft load, at the shaft end .................................
40 N axial, 60 N radial
Bearing life time....................................................
3.68 * 1010 revolutions at
Speed.....................................................................
3000 min-1
Operating temperature...........................................
60 °C
Shaft load, at the shaft end....................................
20 N axial, 30 N radial
4.3 Environmental conditions
Vibration, DIN EN 60068-2-6 ................................
100 m/s2, sine 50-2000 Hz
Shock, DIN EN 60068-2-27...................................
1000 m/s2, half-sine 6 ms
EMC
Immunity to disturbance, DIN EN 61000-6-2
Transient emissions, DIN EN 61000-6-3
Working temperature ranges
Min..........................................................................
-40 °C / -20 °C
Max.........................................................................
+40 °C / +50 °C / +60 °C / +75 °C
Storage temperature ............................................
-30 °C…+80 °C, dry
Relative humidity, DIN EN 60068-3-4..................
95 %, non-condensing
Protection class, DIN EN 60529 ..........................
IP 65
Optional with shaft sealing ring..............................
IP 67