Product Core Brief
- Model: D201190 (AI8 RTD standard terminal); D201190L = long extended terminal variant
- Brand: Metso / Valmet Automation (legacy MasterPiece 2001 pulp & paper DCS platform)
- Series: ACN CS MasterPiece 2001 temperature analog input I/O family ⚠️ Fully Discontinued EOL, only new original surplus / factory refurbished spare stock available
- Core Function: Collect temperature signals from PT100 / PT1000 RTD thermal resistors on paper dryers, furnaces, stock preparation heating loops; full galvanic isolation eliminates ground loop noise, convert resistance signal to high-precision digital temperature values and transmit to D201925 main CPU via proprietary MasterPiece rack bus.
- Product Type: 3U Eurocard hot-swappable rack-mounted RTD temperature analog input I/O module
- Key Specs: 8 fully isolated RTD input channels; support 2-wire / 3-wire PT100/PT1000; 0.05% FS high precision temperature conversion; native matching with D201925 ACN CS CPU & D200175 PMM personality module; Condition: New Original Surplus / Factory Refurbished
Product Introduction
The Metso D201190 (AI8 RTD) is dedicated high-density temperature acquisition card for Metso MasterPiece 2001 DCS, widely deployed in pulp, paper, tissue production lines to monitor dryer cylinder, steam heating, stock tank temperature critical control loops.Each of its 8 channels adopts independent 2500VAC galvanic isolation, suppresses common-mode noise caused by long field RTD cables and mill ground potential difference, avoiding temperature value drift that disturbs moisture and drying closed-loop control. The module auto-detects 2-wire / 3-wire PT100/PT1000 wiring mode, built-in wire resistance compensation to eliminate long cable measurement error.Hot-swap design supports live rack replacement without triggering full process safe-stop; per-channel independent short-circuit/overvoltage protection isolates faulty temperature sensor loops without crashing D201925 main controller. OEM reliability testing records an MTBF of 96,000 operating hours under standard 40°C high-humidity pulp mill cabinet ambient. It is used alongside D201189 HART 4–20mA analog input card to complete full process variable collection.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Full Model Definition | = Standard AI8 RTD 8CH Temperature Input; D201190L = Long terminal connector variant |
| Channel Count | 8 galvanically isolated RTD temperature input channels |
| Supported Sensor Types | PT100, PT1000 platinum thermal resistance; auto support 2-wire / 3-wire wiring |
| Temperature Measurement Range | -200 ℃ ~ +850 ℃ full range |
| Measurement Precision | ±0.05% full scale high-precision resistance-temperature conversion |
| Channel Isolation | 2500 VAC photo-isolation per channel, anti-ground-loop interference |
| Backplane Supply Voltage | 18–36 VDC 24VDC nominal rack power from D201832 / D200136L IPSPS power supply |
| Single Channel Fault Protection | Overvoltage, short-circuit, open-circuit sensor detection & auto cutoff protection |
| Wire Compensation Function | Built-in cable resistance compensation for long-distance 3-wire RTD field wiring |
| Hot-Swap Capability | Live rack insertion/removal, maintains safe-state hold logic during replacement |
| Operating Ambient Temp | -20°C to +60°C cabinet mounting; storage -40°C to +85°C |
| Integrated Protection | Per-channel overvoltage, short-circuit, reverse polarity, ESD surge suppression |
| Form Factor | Standard 3U single-slot vertical Eurocard for MasterPiece 2001 control racks |
| Mechanical Dimensions | 305 mm L × 235 mm H × 68 mm D; unit weight approx. 0.61 kg |
| Status Indication | Front panel LED per channel: Sensor OK, Open Circuit Fault, Short Circuit Alarm |
| Safety Compliance Certifications | CE, UL, RoHS, SIL2 functional safety qualified for pulp & paper continuous process control |
| Mandatory Matching Hardware | D201925 ACN CS main CPU, D200175 PMM personality memory module, D201832/D200136L rack power supply |
| Typical Field Devices Matched | Dryer cylinder PT100 sensors, steam pipeline temperature transmitters, pulp stock tank RTD probes |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Cross serial batch codes against original Metso factory production manifests to filter counterfeit aftermarket copies. Visually inspect backplane gold edge pins, front channel LED array, terminal connector pins and PCB solder joints for scratches or deformation.
- Live Functional Test: Insert into complete MasterPiece 2001 test rack with D201925 CPU + D200175 PMM + rack power supply. Connect precision RTD simulator to all 8 channels, run a 24-hour continuous soak cycle with full temperature range sweep; log measurement accuracy and channel fault detection response hourly.
- Electrical Parameter Test: Use a 500 V Megger insulation tester to verify channel-to-backplane isolation resistance; pass threshold >10 MΩ. Validate rapid short-circuit/open-circuit sensor fault detection (<5ms) and overvoltage lockout protection per channel.
- System Compatibility Verification: Upload paper mill process personality logic via D200175 PMM; confirm CPU reads all 8-channel accurate temperature values normally via Metso MasterTool software. Photograph front panel LED alarm states for on-site commissioning reference records.
- Final QC & Packaging: Place module inside anti-static ESD foam packaging with plastic dust caps covering backplane and field terminal connectors. Affix dated QC Pass sticker listing insulation resistance test data and total soak runtime before warehouse storage.
Replacement Pitfall Guide
❗ Module Variant Mismatch Risk: (short terminal) and D201190L (long extended terminal) cannot cross-use without matching terminal base adapters; mismatched connectors create loose field RTD wiring and intermittent temperature signal dropout alarms.❗ RTD Wiring Ground Loop Risk: All RTD field cables must use shielded twisted pair with single-point cabinet ground only. Dual-end grounding introduces low-frequency noise leading to large temperature measurement deviation and unstable dryer moisture control loops.❗ Hot-Swap Operation Misstep Risk: Do not short field RTD terminal wires before hot-swapping ; sudden channel short creates transient backplane noise that corrupts D200175 PMM flash recipe storage data.❗ Long Cable Compensation Neglect Risk: For field wiring over 50 meters, enable built-in wire resistance compensation via MasterTool; uncompensated cable resistance causes permanent temperature reading offset.❗ ESD Damage Risk: Exposed backplane edge connectors and field terminal pins are highly ESD sensitive during cabinet disassembly. Use a grounded anti-static wrist mat during module swapping in low-humidity workshop environments; static discharge corrupts onboard resistance acquisition PCB and generates uncommanded temperature signal freeze faults.Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
Compatibility Matrix
- ACN CS Main Process Controller → : Direct Mandatory Match — Native backplane I/O bus pinout matching, zero cabinet mechanical modification required
- PMM Personality Memory Module → : Indirect Compatible — stores temperature loop tuning parameters read via RTD channels
- D201832 / D200136L IPSPS Rack Power Supply → : Native Power Match — Isolated low-noise 24VDC logic rail supplies stable power for high-precision resistance measurement circuits
- / PT1000 2/3-wire RTD temperature probes → : Field Device Native Match — Full wire compensation and fault detection support
- Newer Valmet DNA / Advant 400 DCS Controllers → : Incompatible — Different rack form factor and I/O bus communication protocol, cannot intermix hardware
Benchmarks
- Temperature measurement error across full -200~+850℃ span: ≤ ±0.04% FS
- Open/short circuit sensor fault detection response time per channel: ≤ 0.7 seconds
- Continuous idle power consumption: 7.4 W; full 8-channel loaded maximum power draw: 9.1 W
