Product Short Description
Manufacturer: Metso Automation (now part of Neles/Valmet, Finland)
Product Overview:
The AI8H is an 8-channel analog input module for the Metso DNA distributed control system. It accepts 4–20 mA or 0–20 mA current signals and converts them to digital values for the DCS controller. Part number D201189 identifies a specific revision/configuration.
Description
Technical Specifications:
| Parameter | Value |
|---|---|
| Channel Count | 8 channels |
| Input Signal | 4–20 mA or 0–20 mA (selectable per channel) |
| Resolution | 16-bit A/D converter |
| Accuracy | ±0.1% of span |
| Isolation | 500V DC channel-to-channel, channel-to-bus |
| Power Supply | 24V DC (from DNA bus) |
| Communication | DNA bus (proprietary, high-speed) |
| Operating Temp | 0°C to +60°C |
| Mounting | DIN rail or panel mount in DNA I/O rack |
| Certifications | CE, ATEX (for hazardous area variants) |
Functional Features:
- Per-channel configurable — select 4–20 mA or 0–20 mA
- Burnout detection — detects open/short circuit on sensor loop
- Linearization — user-defined per channel (up to 32 points)
- Scaling — engineering unit conversion (e.g., mA → °C, PSI, %)
- Hot-swappable — can be replaced without system shutdown (DNA bus supports live insertion)
Applicable Industries: Pulp & Paper, Mining, Power Generation, Oil & Gas, Chemical Processing
Structure:
- Standard DNA module format: 22.5mm wide per slot
- Plug-in connector with keying for correct orientation
- LED status indicators per channel (power, fault, active)
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