Metso maxPAC Input/Output Sub system

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.

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:

IOP330 24 Vdc common input; 16 channels

IOP334 24 Vdc isolated input; 16 channels

IOP331 48 Vdc common input; 16 channels

IOP332 120 Vac/dc isolated input; 16 channels

IOP333 240 Vac/Vdc isolated input; 16 channels

IOP350 Form C relay; 10 channels

IOP351 Form A/B relay; 16 channels

IOP301 Isolated analog input; 16 channels

IOP302 4-20mA common input; 16 channels

IOP303 3-wire RTD input; 8 channels

IOP304 Thermocouple/emf input; 16 channels

IOP305 Voltage common input; 16 channels

IOP306 Kit with sixteen 100 Ohm resistors

IOP335 Pulse I/O , 8 channels