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10 APPENDIX 1
10.1 MTL5000
Many modules in the MTL5000 Isolating Interface Units range have now been superceded
by their equivalent in the MTL5500. For new applications the MTL5500 modules are
recommended, these offer all the benefits of greater efficiency, new multichannel modules
and new functionality.
A number of the products in the MTL5000 will continue to provide key functionality as part of
MTL DIN rail isolator range and are described within this Appendix.
Important
•
Make sure that all installation work is carried out in accordance with all relevant local
standards, codes of practice and site regulations.
• When planning the installation of MTL5000 isolators it is essential to make sure that
intrinsically safe and non-intrinsically safe wiring is segregated, and that units are
installed as required by a nationally accepted authority or as described in EN 60079-14, ISA
RP 12.6 or DIN VDE-165.
• Check that the hazardous-area equipment complies with the descriptive system document.
• If in doubt, refer to the certificate/catalogue for clarification of any aspects of intrinsic safety
or contact Eaton’s MTL product line or your local representative for assistance.
• Make sure the correct hazardous-area connector (field-wiring plug) is plugged into the
corresponding isolator. It is recommended that the connector is identified by the same tag
number as the matching isolator.
Mount all MTL5000 isolators on low-profile (7mm) or high-profile (15mm) type T35
(top-hat) DIN-rail to EN50022, BS5584, DIN46277. This is available from Eaton, in 1
metre lengths (THR2 - DIN rail). Install isolators within the safe area unless they are
enclosed in approved flameproof, pressurised or purged enclosures and ensure that
the local environment is clean and free of dirt and dust. Note the ambient temperature
considerations of section 3.1.4.
It is recommended that, in normal practice, the DIN rail should be earthed/grounded
to ensure the safety of personnel in the event of a.c. mains (line) power being applied
accidentally to the rail.
Power
connectors
104
115
110
16
16.2mm PITCH
HAZ SAFE
Hazardous-area
connections
Non-hazardous
(safe) area
connections
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