The Crouse-Hinds series MTL 9460-ET product range provides cost-effective Intrinsically Safe (IS) Ethernet equipment that can be installed and maintained easily in hazardous areas. The intrinsically safe hazardous area certification permits the components to be mounted in a Zone 1, or Division 1 hazardous area with connectivity into Zone 0.

　　In Process Automation it is also preferable to use a single cable to provide both power and communications to the end device. The 9460-ET range can deliver Intrinsically Safe Power over Ethernet (PoEx™) with a single Cat 5e or Cat 6 cable, allowing live connection and disconnection of the end device in Zone 0 and 1 hazardous areas.

　　The MTL 9460-ET range includes:

　　Ethernet Gateway (9461-ET)

　　Copper to Fibre Optic Media Converter (9465-ET)

　　Ethernet Switch (9466-ET)

　　Ethernet Isolator (9468-ET)

　　Cost effective IS Ethernet equipment for Zone

　　1, Division 1 hazardous areas

　　• Connectivity into Zone 0

　　• Intrinsically safe Power over Ethernet (PoEx™)

　　enables live connection or disconnection in

　　Zone 0 and 1

　　• Serial-to-Ethernet Gateway

　　• Copper to Fibre-Optic Media Converter

　　• IS Ethernet Switch

　　• IS Ethernet Isolator

　　• IS Wireless LAN Access Point/Bridge

　　MTL 9460-ET range

　　Intrinsically safe Ethernet products

　　Today in Process Automation many different methods are used to power and to communicate with end devices. Such methods may include

　　4-20mA; a variety of different fieldbus standards; serial communications- including RS232, RS422 and RS485; video; telephony and Ethernet.

　　Where applications require high bandwidth, Ethernet is the ideal solution as it provides open connectivity and can be combined with

　　Ethernet Remote I/O and Linking Devices to connect to low bandwidth 4-20mA and fieldbus systems. But Ethernet has rarely been used in

　　hazardous areas because of the high cost involved and the limitations involved in order to carry out maintenance.

　　The 9460-ET Series provides cost-effective Intrinsically Safe  (IS) Ethernet equipment that can be installed and maintained

　　easily in hazardous areas. The intrinsically safe hazardous  area certification permits the components to be mounted in a

　　Zone 1, or Division 1 hazardous area with connectivity into  Zone 0 and the associated apparatus certification of the

　　9468-ET IS Ethernet isolator and 9491-PS IS power supply allow this equipment to be mounted in a

　　Zone 2 hazardous area and connected to intrinsically safe equipment in a Zone 0 or 1, or Division 1 hazardous area.

　　In Process Automation it is also preferable to use a single cable to provide both power and communications to the end device. The 9460-ET

　　Series can deliver Intrinsically Safe Power over Ethernet (PoEx™) with a single Cat 5e or Cat 6 cable, allowing live connection and disconnection

　　of the end device in Zone 0 and 1 hazardous areas. 

       The 9461-ET Ethernet Gateway provides existing intrinsically safe equipment with “Ethernet connectivity” by allowing conventional serial

　　communication equipment to be connected to an Ethernet network. Many intrinsically safe devices such as analysers, weighing systems, dust

　　monitors, etc. have RS232, RS422 or RS485 serial connectivity. Providing

　　these devices with Ethernet connectivity offers considerable hardware

　　and integration cost savings.

　　The 9465-ET Copper to Fibre Optic Media Converter enables an Ethernet network to be extended over a much greater distance. A multi-

　　mode fibre optic link running at 100Mbps can go distances of up to 2 km, or an extended distance of 5 km is achievable at 10Mbps. With

　　single mode fibre longer distances are supported.

　　The 9466-ET Ethernet switch allows the interconnection of intrinsicallysafe Ethernet networking components via its 5 ports. It also enables a

　　copper Ethernet network to be extended beyond the 100 metre distance limit between Ethernet devices.

APPLICATIONS

　　The 9468-ET is an intrinsically safe Ethernet isolator enabling Ethernet devices in Zone 2, or a safe area, to communicate with intrinsically safeEthernet networking components operating in the hazardous area. A further application is the use of a pair of 9468-ET isolators to permit an Ethernet cable to cross a hazardous area.

　　The 9469-ETplus Intrinsically safe Wireless LAN product is a multi-functional module that can be used as an 802.11a/b/g/h Access Point, a Wireless Bridge or a Wireless Repeater. Many end users have

　　recognised the benefits of giving mobile operators access to control and maintenance system data.

　　A choice of intrinsically safe PDAs and Zone

　　2 PCs offering 802.11 wireless connectivity is

　　now available. The 9469-ETplus offers lower

　　costs and easier maintenance for WLAN

　　equipment installed in hazardous areas,

　　compared to the alternative of large, expensive

　　flameproof enclosures fitted with specialist

　　certified antennas.

　　The 9491-PS Power Supply is the preferred

　　method for supplying the 9460-ET Series of

　　IS Ethernet Modules as it is based on an

　　isolating power supply. It takes a 24V DC

　　Safe Area/Zone 2 supply and produces an

　　Intrinsically Safe 12V DC nominal output

　　capable of powering the Ethernet modules

　　mounted in a Zone 1/Division 1 hazardous

　　area.

　　The 9466-ET Ethernet Switch and the 9468-ET IS Ethernet Isolator are capable of distributing

　　power to compatible devices connected to their IS ports providing Power over Intrinsically Safe Ethernet (PoEx™) via the RJ45 Cat5e cables.

　　This method eliminates the need for a separate   power supply cable to each Ethernet device;

　　simplifying both installation and maintenance. A  9491-PS power supply is required to power the  9466-ET and an additional 9491-PS is required

　　for each powered Ethernet port. Similarly, one 9491-PS is required to power the IS Ethernet port of the 9468-ET IS Ethernet Isolator. The 9461-ET, 9465-ET and 9469-ETplus can be

　　powered directly from a 9491-PS intrinsically  safe power supply or using Power over   IS Ethernet (PoEx™).

　　The MTL IS Ethernet applications range from  immediate needs for Hazardous Area WLAN  infrastructure; IS serial device connectivity;

　　and Ethernet connections across hazardous  areas to long term opportunities to develop  Ethernet field devices.

　　Statement issued: 23rd Sept. 2022

　　Last Time Buy: 31st March 2023

　　Replacements / Alternatives: MTL 9470-ET/G Gigabit intrinsically safe ethernet range