Metso D201435L

Technical Specifications

• Model Series: ACN CS D2014 Analog Acquisition Subseries
• Power Input: 24 VDC ±10%, rated power consumption 12 W
• Analog Input Channels: 8 differential 4–20 mA / 0–10 VDC configurable
• Signal Resolution: 16-bit high-precision ADC conversion
• Transmission Distance Limit: Max 300 m shielded twisted pair (L variant exclusive)
• Communication Backplane Protocol: Metso proprietary ACN internal bus
• External Communication: RS485 Modbus RTU
• Operating Temperature Range: -20 °C to +60 °C
• Storage Temperature Range: -40 °C to +85 °C
• Relative Humidity Tolerance: 5%–95% non-condensing
• Protection Grade: IP20 (module board); IP54 when fully installed in standard Metso control rack
• Dimension: 220 mm (H) × 160 mm (W) × 35 mm (D)
• Net Weight: 0.78 kg

Functional Features

1. 8-channel isolated analog signal acquisition with channel-by-channel surge suppression
2. L-type reinforced multi-layer copper shielding eliminates long-distance electromagnetic interference
3. Built-in hardware open-circuit detection for each analog input channel
4. Real-time channel fault self-diagnosis with rack front-panel LED status indicators
5. Onboard 256 KB non-volatile Flash memory for calibration parameter storage
6. Full hot-swap compatible with standard Metso ACN rack backplane
7. Automatic signal range switching between current and voltage input modes

Performance Parameters

• Measurement Accuracy: ±0.08% full scale
• Channel Isolation Voltage: 1500 VAC between field signal and backplane bus
• ADC Conversion Cycle Time: 1 ms per channel
• Surge Withstand Capacity: 2 kV ESD, 4 kV electrical fast transient
• Vibration Resistance: 10–150 Hz, 1 g continuous operation without signal drift

Material Composition

• Main Circuit Substrate: FR4 high-Tg industrial fiberglass PCB
• Signal Connector: Gold-plated phosphor bronze terminal pins
• Shielding Layer: 0.8 mm cold-rolled steel full enclosure shield
• Mounting Frame: Black extruded aluminum alloy with anti-corrosion anodized coating
• Electronic Components: Industrial-grade wide-temperature resistors, tantalum capacitors, automotive specification IC chips

Structural Characteristics

• Standard 1U rack plug-in card structure with dual locking latches on both sides
• Front panel integrated power, communication, and channel fault LED indicator array
• Rear edge gold finger connector for direct insertion into ACN backplane slot
• Separate compartment layout for analog signal circuit and digital bus circuit to avoid cross-interference
• Independent terminal wiring block for field analog signal cable access

Working Principle

Advantage Highlights

1. Extended long-distance signal transmission capability without external signal repeaters
2. Channel independent surge protection reduces single-point failure impact on overall system
3. Hot-swap design eliminates full rack power shutdown during module replacement
4. Factory pre-calibrated, zero on-site calibration required after installation
5. Ultra-wide temperature range adapts to unheated on-site control cabinets
6. Full mechanical and electrical compatibility with all legacy Metso ACN racks

Applicable Industries

• Metallurgical mineral processing (flotation, thickener, crushing loop monitoring)
• Pulp & paper manufacturing (stock flow, bleaching liquor concentration control)
• Chemical & petrochemical refining (reactor temperature, pressure analog measurement)
• Municipal industrial wastewater treatment (dissolved oxygen, pH value signal collection)
• Cement production raw material homogenization monitoring

Installation Requirements

1. Install exclusively in Metso standard ACN CS series 8/16-slot control rack
2. Mount module in rack slot with minimum 10 mm vertical ventilation gap between adjacent modules
3. Field analog signal cables must adopt double-shielded twisted pair wiring; shield single-ended grounded at rack cabinet PE terminal
4. Cabinet PE grounding resistance ≤ 4 Ω for full EMC performance activation
5. Confirm rack backplane bus power supply stabilizes at 24 VDC before hot-swapping
6. Maintain cabinet internal ambient temperature below 55 °C during continuous operation

Operation & Maintenance Precautions

1. ESD wrist strap and anti-static mat mandatory during module disassembly and wiring
2. Prevent liquid splashing and conductive dust accumulation on circuit board surface
3. Conduct annual inspection of terminal block screw tightness to avoid loose signal contact
4. Do not install adjacent to high-power frequency converter modules to avoid interference
5. Store spare modules in anti-static sealed packaging with desiccant for humidity control
6. Cut off field signal terminal power before disassembling wiring terminals