METSO IOP351

Product Name: Analogue Output Module

Product Description: Metso IOP351 is an analogue output module belonging to Metso DNA DCS system. It converts digital control commands from DCS controller into standard 4-20 mA analogue signals to control field actuators such as control valve positioners.

Category: Metso

Description

Technical Specifications:

Signal Type: Analogue output, 4-20 mA
Channel Count: Multiple isolated analogue output channels
Output Range: 4 mA to 20 mA
Resolution: High precision D/A conversion
Galvanic isolation between field and DCS backplane
Backplane: Metso DNA system backplane
Operating Temperature: 0 °C to +60 °C

Functional Features:

Generate 4-20 mA control signal for modulating valves and variable actuators
Diagnostic feedback for loop fault conditions
Output signal read-back function
Overload protection for each output channel
Hot swap capability in qualified chassis
Support for fail-safe output state configuration

Application Scenarios:

Pulp and paper mill valve control
Chemical process regulation
Power plant boiler control loops
Mining process flow regulation
Water treatment plant modulating control

Performance Parameters:

Output accuracy: ±0.1 % full scale
D/A conversion resolution: 16 bit
Fast update rate for closed loop process control

Structure Characteristics:

Plug-in chassis module
Front panel status LED indicators
Detachable screw terminal block for field loop wiring

Installation Requirements:

Mount in Metso DNA DCS chassis
Use shielded twisted pair cables for analogue output loops
Ensure proper cabinet grounding
Calculate total loop resistance to stay within module drive capacity

Notes:

Configure fail-safe state before commissioning control loops
Do not short output terminals
Verify actuator input impedance matches module drive capability

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