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INM4500-2
Mar 2009
1 INTRODUCTION
1.1
General
This instruction manual describes the procedures for installing, connecting, checking and maintaining
MTL4500 Series isolating interfaces and accessories.
The individual sections cover the following topics
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Section 2 describes the series and its accessories
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Section 3 precautions before and during installation
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Section 4 installing backplanes
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Section 5 installing modules
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Section 6 relevant technical data
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Section 7 fault-fi nding and maintenance
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Section 8 test procedures for all modules
1.2 The MTL4500 concept
The MTL4500 Series of modules and accessories is designed for use with process connected systems. It
consists of compact isolating interface modules mounted on backplanes, which carry safe-area signals
and power supplies. Hazardous-area circuits are connected to the terminals on the modules. Backplanes
can be integrated into a user’s process system architecture or mounted in separate enclosures.
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MTL4500 SERIES DESCRIPTION
Each module has a multi-pin connector in its base that plugs into a matching connector on the backplane.
This connector carries all appropriate safe-area circuits and power supplies. Additional multiway
connectors, located at the front of the module, accept the wiring from the hazardous-area circuits. All
connectors are keyed so that connections cannot be made the ‘wrong way round’.
Status LEDs and configuration ports (where appropriate) are located on the front of the modules for easy
access and full dc isolation is provided between the input and output so that the modules are intrinsically
safe without needing an earth.
INM4500-2
Mar 2009
MTL4500 Series Interface units