Eaton 9476-ET User manual

9476-ET(G)
Instrinsically Safe Gigabit Ethernet
6 Port Managed Switch
May 2021
INM 9476-ETG Rev 2
Instruction manual
MTL Industrial Network Solutions

ii INM 9476-ETG Rev 2
DECLARATION OF CONFORMITY
A printed version of the Declaration of Conformity has been provided separately within the original shipment of goods.
However, you can find a copy of the latest version at -
http://www.mtl-inst.com/certificates

iii INM 9476-ETG Rev 2
CONTENTS
1 FEATURE ..........................................................................1
2 DESCRIPTION ......................................................................2
3 CONNECTIONS.....................................................................3
3.1 DATA & POWER TERMINALS ...............................................................3
3.2 LAN (RJ45) 10/100/1000 BASE-T Ethernet ......................................................3
3.3 LED indicators ...........................................................................3
4 ORDERING INFORMATION ...........................................................4
5 DIMENSIONS ......................................................................4
6 ENVIRONMENTAL ..................................................................4
7 WASTE REMOVAL INFORMATION .....................................................4
8 INSTALLATION .....................................................................5
9 ATEX & IECEx CERTIFICATION INFORMATION ...........................................6
10 SPECIFICATION.....................................................................8
11 APPROVALS .......................................................................8
12 CERTIFICATE INSTALLATION .........................................................9
13 CONNECTING THE 9476-ET(G)TO A PC/NETWORK ......................................11
14 SYSTEM INFORMATION ............................................................12
15 PORT STATUS.....................................................................13
16 NETWORK STATISTICS .............................................................14
17 MAC TABLE .......................................................................15
18 ACTIVITY LOG ....................................................................16
19 SYSTEM SETTINGS ................................................................17
20 PORT SETTINGS...................................................................18
21 REBOOT MEDIA CONVERTER........................................................19
22 REBOOT SWITCH ..................................................................19
23 LOGOUT OF CURRENT WEB SESSION ................................................20
24 RESET BUTTON ...................................................................20
25 CONTACT ........................................................................21
26 APPENDIX A END USER LICENSE AGREEMENT ........................................22
27 APPENDIX B CYBERSECURITY GUIDELINES ...........................................30
28 APPENDIX C CYBERSECURITY REFERENCES...........................................37

iv INM 9476-ETG Rev 2
GENERAL SAFETY INFORMATION
Safety instructions for installation and operating personnel
The operating instructions provided here contain essential safety instructions for installation personnel
and those engaged in the operation, maintenance and servicing of the equipment.
WARNING !
A ‘WARNING’ marked in this way is provided for operator and plant safety and MUST be followed.
CAUTION !
A Caution is provided to prevent damage to the instrument.
NOTE
These are used to guide the user in the operation of the instrument.
Before commencing installation or commissioning:
• Read and understand the contents of this manual
• Ensure installation and operating personnel have received adequate training for this task
• Ensure that any operating instructions are fully understood by the personnel responsible.
• Observe national and local installation and mounting regulations (e.g. IEC 60079-14).
WARNING !
These assemblies may not be used in explosion-hazard area applications if they have been used
previously in general electrical installations.
WARNING !
The responsibility for planning, installation, commissioning, operation and maintenance, particularly
with respect to applications in explosion-hazard areas, lies with the plant operator.
During operation:
• Make the relevant instructions available at all times to the operating personnel.
• Observe safety instructions.
• Observe national safety and accident prevention regulations.
• Operate the equipment within its published specification.
• Servicing, maintenance work or repairs not described in this manual must not be performed without
prior agreement with the manufacturer.
• Any damage to this equipment may render its explosion protection null and void.
• No changes to any of the components that might impair their explosion protection are permitted.
If any information provided here is not clear:
Contact Eaton’s MTL product line or an authorised distributor or sales office.
NOTE
Improper installation and operation of the enclosure can result in the invalidation of the guarantee.

1INM 9476-ETG Rev 2
1 FEATURE
• Intrinsically Safe ATEX / IECEx Certification
• 6 Port Switch 10/100/1000Mb LAN
• Standard Versions
6x Gigabit Ports
2x Gigabit + 4x 10/100 PoEx* Ports
• CPU Management Feature via Web Pages
• Compact dimensions (W: 42 x H: 160 x D: 140 mm)
• Ex ia IIB T4 Ga, Ex ia [ia Da] IIIC T135°C Db (non-mining,
Ex ia I Ma (mining) - ETG version
• Ex ia IIC T4 Ga, Ex ia [ia Da] IIIC T135°C Db (non-mining,
Ex ia I Ma (mining) - ET version
• Ta -40ºC to 70ºC
• Zone 1 / Zone 21 mounting
• (Zone 0 / Zone 20 with a suitable Ex ia Power Supply)
*Note – PoEx is a simple adaptation of the IEEE 802.3af Power over Ethernet
(PoE) standard to bring the benefits to the 9400 Range of Hazardous Area
devices. This allows two spare pairs in the existing Cat5e cable to distribute the
power supply from a 9476 Ethernet Switch (Power Sourcing Equipment – PSE)
to each of the devices connected to its five ports (PD – Powered Device). This
adaptation is necessary due to restrictions for Hazardous Area use. It is not
implied that the device conforms to the 802.3af (PoE) standard.

2INM 9476-ETG Rev 2
2 DESCRIPTION
The 9476-ET (G) is an Intrinsically Safe (IS) 6-Port Managed Ethernet Switch suitable
for Zone 1 / Zone 21 mounting, (Zone 0 / Zone 20 with a suitable Ex ia Power Supply).
The 6x RJ45 (LAN) ports support 10/100/1000 IS Ethernet connections.
Available standards types
• 6 port Gigabit
• 4 port Gigabit and 2 ports 10/100+PoEx
These variants suit different applications.
Power (12V DC) is supplied to the module locally along with Power over Ethernet
(PoEx) for the connected devices where required.
Note: PoEx not available on Gigabit ports.
The compact and cost effective design makes it the ideal choice for many applications:
Petrochem
Process Monitoring & Control...
Mining
Underground Communication Links, PLC and Machine Monitoring…
Electrical connections are via cage-clamp and/or screw type plug/socket terminals
along with RJ45 type connectors for the Ethernet LAN ports.

3INM 9476-ETG Rev 2
3 CONNECTIONS
3.1 DATA & POWER TERMINALS
Power + External IP Rated LEDs (CON1)
Pin Function Pin Function
1Power +12V 2Power 0V
3Port 3 PoEx +12V 4Port 3 PoEx 0V
5Port 4 PoEx +12V 6Port 4 PoEx 0V
7Port 5 PoEx +12V 8Port 5 PoEx 0V
9Port 6 PoEx +12V 10 Port 6 PoEx 0V
11 0V 12 0V
13 LAN1 EXT LED 14 LAN2 EXT LED
15 LAN3 EXT LED 16 LAN4 EXT LED
17 LAN5 EXT LED 18 LAN6 EXT LED
External IP66 rated LEDs wire down to 0V
Power Ui = 15.4V
3.2 LAN (RJ45) 10/100/1000 BASE-T Ethernet
Pin 10/100 Function Gigabit Function
1Tx + BI_DA+
2Tx- BI_DA-
3Rx + BI_DB+
4PoEx +12V* BI_DC+
5PoEx +12V* BI_DC-
6Rx- BI_DB-
7PoEx 0V* BI_DD+
8PoEx 0V* BI_DD-
*Note- PoEx only on LAN3-6 ports when 10/100
PoEx not available on Gigabit ports
3.3 LED indicators
OFF FLASH ON
PWR (green) Power Fail N/A Power OK
WDG (red/green) Fault Green- Healthy
(10Hz)
Fault
STAT (red/green) N/A Green – Identify
module mode
Red (fault)
Green (healthy)
RJ45 ACT (yellow) Ethernet link
disconnected
Ethernet link
activity
Ethernet link connected
RJ45 1000 (green) 10/100Mbps N/A 1000Mbps
LAN1 – LAN6 EXT
LED
Ethernet link
Disconnected
Ethernet link
activity
Ethernet link connected

4INM 9476-ETG Rev 2
4 ORDERING INFORMATION
Part Number Description Comments
9476-ETG 6 Port Gigabit Ethernet Switch (6x Gigabit) Standard
9476-ET2G 2+4 Port Gigabit Ethernet Switch (2x Gigabit + 4x 10/100 PoEx) Standard
9476-ET3G 3+3 Port Gigabit Ethernet Switch (3x Gigabit + 3x 10/100 PoEx) Special Order
9476-ET4G 4+2 Port Gigabit Ethernet Switch (4x Gigabit + 2x 10/100 PoEx) Special Order
9476-ET 6 Port Ethernet Switch (6x 10/100 4x PoEx) Special Order
Note: Special order items may incur a minimum order quantity
5 DIMENSIONS
Width 42mm
Height 160mm
Depth 140mm
Weight 1500g
Mounting Din Rail
6 ENVIRONMENTAL
Operating Temperature
-40°C…+70°C
Storage Temperature
-40°C…+70°C
Humidity
0…95% RH, non-condensing
Ingress Protection
Select enclosure to suit application, see certificates for information
7 WASTE REMOVAL INFORMATION
The electronic equipment within must not be treated as general waste. By
ensuring that this product is disposed of correctly you will be helping to
prevent potentially negative consequences for the environment and human
health, which could otherwise be caused by incorrect waste handling of this
product. For more detailed information about the take-back and recycling
contact Controlled Systems Ltd

5INM 9476-ETG Rev 2
8 INSTALLATION
WARNING !
See Special Conditions of Safe Use in the folllowing section regarding
ATEX & IECEx Certification Information before installation
The 12V supply to the module connects via screw terminals 1 + 2 as shown above.
If Power over Ethernet (PoEx) is required to any of the connected devices, the RJ45
connection for that port requires that the 12V supply for that device be injected into
the relevant screw terminals, see connections section.
As the 9476 Ethernet switch supports Auto MDI/MDI-X, a straight connected RJ45
Cat5e cable is used to connect to any device.
It is recommended that Cat5e cables for Hazardous Area Zone 1 use are ‘Blue’ in
colour and are of good quality (see accessories section), the Safe Area cables being a
colour other than blue to aid identification.
The operating parameters must not exceed those as detailed on the certificate.
This apparatus must only be installed or replaced by a competent person who must
ensure that existing IS segregation is maintained.

6INM 9476-ETG Rev 2
9 ATEX & IECEx CERTIFICATION INFORMATION
The following information is in accordance with the Essential Health and Safety
Requirements (Annex II) of the EU Directive 2014/34/EU [the ATEX Directive- safety of
apparatus] and is provided for those locations where the ATEX Directive is applicable.
General
a) This equipment must only be installed, operated and maintained by competent
personnel. Such personnel shall have undergone training, which included instruction
on the various types of protection and installation practices, the relevant rules
and regulations, and on the general principles of area classification. Appropriate
refresher training shall be given on a regular basis. [See clause 4.2 of EN 60079-17].
b) This equipment has been designed to provide protection against all the relevant
additional hazards referred to in Annex II of the directive, such as those in clause
1.2.7. This equipment has been designed to meet the requirements of intrinsically
safe electrical apparatus in accordance with EN 60079-0, EN 60079-11 and EN
60079-26.
Installation
a) Reference to the IEC code of practice IEC 60079-14. In addition particular
industries or end users may have specific requirements relating to the safety of
their installations and these requirements should also be met. For the majority of
installations the Directive 1999/92/EC [the ATEX Directive- safety of installations]
is also applicable.
b) Unless already protected by design this equipment must be protected by a suitable
enclosure against
i) mechanical and thermal stresses in excess of those noted in the
certification documentation and the product specification.
ii) aggressive substances excessive dust moisture and other contaminants
c) This apparatus is intrinsically safe electrical apparatus and is normally mounted in
a hazardous area.
Inspection and maintenance
a) Inspection and maintenance should be carried out in accordance with European,
national and local regulations which may refer to the IEC standard IEC 60079-17.
In addition specific industries or end users may have specific requirements which
should also be met.
b) Access to the internal circuitry must not be made during operation.
Repair
This product cannot be repaired by the user and must be replaced with an equivalent
certified product.