METSO IOP351 Industrial Control Module

Key features and functions of the METSO IOP351 Relay Output Module:

As part of the Metso DNA or earlier Metso MaxDNA/maxPAC systems, the primary role of the IOP351 module is to provide a digital output interface to control field devices via relay contacts.

Relay Outputs: The IOP351 provides relay outputs, which means it uses electromagnetic relays to isolate the low voltage signals of the control system from the high voltage or high current signals of the field devices. This allows it to directly drive a variety of industrial actuators such as valves, motor starters, indicator lights, alarms, etc.

Number of Channels: Typically provides 16 independent relay output channels.

Contact Type: The module typically supports Form A/B relay contacts. This means that each relay can be configured as either Normally Open (Normally Open, Form A) or Normally Closed (Normally Closed, Form B) contacts to meet different control logic requirements. Switching from Form A to Form B can be accomplished by changing the resistor settings on the module.

Isolation: IOP351 modules typically provide channel-to-channel isolation and field-to-logic isolation. This isolation is essential to protect the control system from electrical interference, noise, and malfunctions of field devices, increasing system stability and safety.

Contact Ratings: Relay contacts are typically rated as follows: 5A @ 250Vac, 3A @ 30Vdc.

This means it can handle medium power AC and DC loads.

Communication Interface: As part of the Metso DNA or maxPAC system, the IOP351 communicates with the Data Processing Unit (DPU, i.e., the controller) via the I/O bus. the DPU tightly controls the communication on the I/O bus.

Diagnostic Functionality: Usually has some diagnostic functionality so that the system can detect faults in the modules or in the field wiring.

Redundant Applications: Can be used in redundant configurations to further increase system availability and reliability, ensuring continuous operation even in the event of module failure.

Industrial Grade Design: Designed for industrial environments and can withstand a range of temperatures, humidity and vibration.

Dimensions and Weight: Approximate dimensions are 4.5cm x 31.5cm x 25.7cm and weight is approximately 0.58kg.