Product category:
Fieldbus systems, Fibre-optic systems
News Release from: MTL Instruments Group | Subject: TP32 and the FP32
Edited by the Processingtalk Editorial
Team on 25 March 2005
Emerson approves MTL fieldbus surge
solutions
After extensive testing, Emerson Process Management has agreed that MTL dedicated fieldbus protectors are unique in that they can be applied to any of their Foundation Fieldbus systems
After extensive testing, Emerson Process Management has agreed that the MTL dedicated Fieldbus protectors are unique in that they can be applied to Foundation Fieldbus systems without the performance limiting effects normally associated with surge protectors MTL Surge Technologies Fieldbus protector range consists of the TP32 and the FP32
This article was originally published on Processingtalk on 14 Aug 2008 at 8.00am (UK)
Related stories
Secure asset management for Tofino security users
MTL Instruments and Byres Security have released a new loadable security module (LSM) for their Tofino Industrial Security Solution that discovers and identifies what devices are on the network
MTL first to provide full redundancy for FISCO
MTL Instruments has enhanced its class-leading range of Fieldbus Intrinsically Safe Concept (FISCO) wiring components for Foundation Fieldbus networks with the introduction of redundancy
Emerson has approved both devices for use in their fieldbus solutions.
The FP32 prevents surges occurring on the trunk or spurs entering the control area or damaging terminators, and the TP32 provides protection for field instruments.
The multistage hybrid surge protection network at the heart of the FP32 uses a combination of solid-state electronics and a gas filled discharge tube (GDT), to provide surge protection up to 20kA.
Further reading
"Fast Switch" technology avoids fieldbus problems
"Fast Switch" is an IS protection technique that can allow higher powers than are usual in IS circuits: this has been patented and is now launched for sale by MTL for use with an IS Ethernet
Intrinsically safe Ethernet for hazardous areas
MTL Instruments have released the 9400 Series intrinsically safe (IS) Ethernet range and launched an enhanced power supply, 9491-IS, which incorporates the MTL patented Fast Switch technology
This impressive surge protection circuit is design to exhibit exceptionally low line resistance and adds only a tiny voltage drop to the bus.
As a result, no matter how many FP32 devices are connected to a trunk or spur the system will still be able to support its full 32 transmitters as specified by IEC61158-2.
In operation the FP32 device does not adversely affect the performance or operation of the fieldbus or connected equipment, it allows signals to pass with very little attenuation while diverting surge currents safely to earth and clamping output voltages to safe levels.
The FP32 meets IEC61158-2:2000 for 31.25kB/s systems such as Foundation Fieldbus, Profibus-PA and WorldFIP whilst the TP32 meets the additional requirements of ANSI/ISA-50.02-2 1992 for 31.25kB/sec systems.
The TP32 protection network is a hybrid design consisting of high-power, solid state electronics and a gas discharge tube, which are capable of diverting surges up to 10kA.
Encased in a stainless steel enclosure, the TP32 exhibits unparalleled mechanical durability providing years of maintenance free operation in harsh environments.
The enclosure is available threaded for all the common conduit entries.
To provide complete protection it is strongly recommended that the AC power input to the power supply and host be protected.
MTL has many options here, but the most popular product is the MA15 (UL1449 recognized and approved for Class I, Division2 Groups A, B, C and D).
The MA15 provides state of the art surge protection and RFI filtering to completely protect fieldbus equipment.
All MTL Surge Technologies products come with a 10-year warranty.
• MTL Instruments Group: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
Search the Pro-Talk network of sites
