Introduction; General; The Mtl4500 Concept; The Mtl4600 Concept - Eaton Crouse-Hinds Series Instruction Manual

INM 4500/4600 Rev 12
DRAFT - 22 March 2018
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INTRODUCTION

1 .1

General

This instruction manual describes the procedures for installing, connecting, checking and
maintaining MTL4500/4600 range of isolating interfaces and accessories. The MTL4500
products provide an intrinsically safe (IS) interface to a hazardous area of a process plant,
while the MTL4600 range is exclusively for non-hazardous area service.
The individual sections cover the following topics
• Section 2 describes the range and its accessories
• Section 3 specifies precautions before installation
• Section 4 covers the installation of backplanes
• Section 5 describes the installation of modules onto the backplanes
• Section 6 provides relevant technical data
• Section 7 outlines fault-finding and maintenance
• Section 8 describes bench test procedures
• Section 9 provides hazardous-area application information
• Section 10 provides safety parameter information
1 .2

The MTL4500 concept

The MTL4500 range of modules and accessories are 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
connect to the blue terminals on the modules. Backplanes can be integrated into a user's
process system architecture or mounted in separate enclosures.
1 .3

The MTL4600 concept

The MTL4600 range of modules and accessories are designed for use with process
connected systems, but in non-hazardous area applications. They are based on the MTL4500
range but have been given a separate identity to avoid the burden of administration
previously associated with the use of IS modules in non-IS applications. Field equipment,
located in non-hazardous areas, connects to the grey terminals on the modules.
Most of the mechanical and electrical characteristics shared by the two ranges are identical.
The information contained in this manual relates specifically to the MTL4500 range of
products; however, where an MTL4600 version of the module exists, the information is also
applicable unless otherwise specified.
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