Metso Automation MAX Controls Inc. • 277596 •
Chapter 1
maxPAC
Input/Output Subsystem
Overview
The maxPAC Input/Output System links the maxDNA Distributed Control
System to real world process control inputs and outputs. The Input/Output
system uses a compact design to provide the system with greatly enhanced
I/O capacity in relatively little space. A close relationship exists, in turn,
between this I/O system and the maxDNA Distributed Processing Unit
(DPU) which it serves.
The DPU and the I/O modules mount in an I/O chassis assembly. The
backplane in the chassis assembly provides the I/O bus connection between
the DPU and the I/O modules. It also provides the system power and field
power connections to the modules. Multiple I/O chassis that share the I/O
bus can be installed in a cabinet.
Model IOP I/O Subsystem
Cabinet
Two standard cabinet types are available for the mounting of I/O system
hardware. The cabinet is available as either a NEMA (National Electrical
Manufacturers Association) type 1 or 12 and consists of the following:
§ Welded steel construction
§ Front and Rear access
§ I/O mounted in front and rear of cabinet (standard)
§ I/O mounted in front and terminations in rear of cabinet (option)
§ Other mounting arrangement options are also available
§ Removable doors
§ 19” rack mount rails with standard E.I.A. hole spacing
§ Top or bottom Cable access
§ Size 85 7/8” h x 24 ¾”w x 38 7/8”d
Optional Cabinet styles and sizes are also available.
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