METSO IOP111 Analog Input Module
The Metso IOP111 is a rugged Analog Input Module belonging to the legacy “100-series” I/O family of the Metso DNA (formerly Valmet DNA) Distributed Control System.
It is known for its durability and high reliability in demanding industrial environments.
1. Introduction
The IOP111 is an 8-channel analog input module designed to interface with standard current and voltage signals from field transmitters.
While the 300-series (like the IOP302) focuses on high-density 16-channel configurations, the IOP111 is often utilized in applications where robust channel-to-logic isolation and stable signal conditioning are prioritized over channel count.
It is a foundational component for many older Metso systems still in operation today.
2. Technical Parameter Table
| Parameter | Specification |
| Model Number | IOP111 (Part No: 181510) |
| Number of Channels | 8 Channels |
| Input Signal Range | 0…20 mA / 4…20 mA / 0…5 V / 0…10 V |
| A/D Resolution | 12-bit |
| Accuracy | $\pm 0.2\%$ of Full Scale |
| Input Impedance | 250 $\Omega$ (for Current) / > 1 M$\Omega$ (for Voltage) |
| Isolation | 1500 V AC (Field-to-Logic) |
| Power Consumption | Approx. 1.5 W |
| Mounting | Interface via IOT110 or similar base |
| Operating Temp | 0°C to +60°C |
3. Related Models
The IOP111 is the standard entry in the 100-series analog family:
IOP114: The 16-bit high-precision version for critical measurements.
IOP115: Specialized voltage-only input module.
IOT110: The universal Terminal Base used for 100-series modules.
IOP121: The corresponding Analog Output module for the 100-series.
4. Application Cases
General Process Monitoring: Tracking tank levels, pipe pressure, and flow rates in water treatment plants.
HVAC Systems: Interfacing with temperature and humidity sensors in large-scale climate control.
Cement & Mining: Monitoring dusty and vibration-prone environments where the 100-series’ rugged design is beneficial.
Legacy Upgrades: Providing replacement parts for older Damatic or early Metso DNA systems during maintenance cycles.
| EATON | XVS-430-57MPI-1-10 |
| EBERLE | BC72-ASC11 |
| ebm | W2S130-AA01-16 |
| EBMPAPS | TYP8550N |
| EBMPAPST | 4414 F/12 |
| EDT | 20-20520-2 |
| EKS | IOL-3000-RX-8D-13-MM-SC |
| ELAU | MC-4/11/01/400 |
| ELAU | PMC-2/11/08/000/00/03/11/00/0K |
| ELAU | PMC-2/11/05/000/00/00/01/00/00 |
| ELAU | C600/10/1/1/1/00 |
5. Product Advantages and Features
Rugged Construction: Built to withstand the electrical noise and thermal fluctuations typical of older industrial cabinets.
Multi-Signal Support: Configurable for both current (mA) and voltage (V) inputs, providing flexibility for varied field instrumentation.
Hardware Reliability: Simple, proven architecture with a very high Mean Time Between Failures (MTBF).
Easy Maintenance: Like most Metso DNA I/O, it is hot-swappable, allowing for replacement without powering down the entire controller rack.
Signal Filtering: Includes passive hardware filters to suppress high-frequency interference from the plant floor.
6. Other Models in the Same Series
The 100-series ecosystem includes several modules designed to work together:
IOP131: Digital Input Module (24V/48V).
IOP151: Relay Output Module for discrete control.
IOP113: RTD/Thermocouple input module for temperature sensing.
DPU4E / DPU-SR: Processing units commonly found managing these modules.