Metso D200137

Technical Specifications

• Number of Input Channels: 16 fully isolated digital input channels
• Field Input Signal Type: 24 VDC sinking/sourcing digital contact signal
• Channel Isolation Voltage: 500 Vrms between individual channels and channel-to-backplane
• Input Current per Channel: 10 mA rated trigger current
• Backplane Operating Supply: 10 VDC – 30 VDC (24 VDC nominal)
• Module Consumption Current: 200 mA maximum
• Operating Temperature Range: -20 °C ~ +70 °C
• Storage Temperature Range: -40 °C ~ +85 °C
• Humidity Tolerance: 5% – 95% relative humidity, non-condensing
• Vibration Resistance: 2 g (10–150 Hz per IEC 60068-2-6)
• Shock Resistance: 15 g (11 ms pulse per IEC 60068-2-27)
• Signal Sampling Frequency: 100 Hz per channel
• Signal Acquisition Accuracy: ±0.1% state recognition threshold
• Dimensions (W×H×D): 100 mm × 70 mm × 30 mm
• Net Weight: 0.5 kg
• Certifications: CE, UL, ATEX Zone 2 general industrial certification

Functional Features

1. Independent optocoupler galvanic isolation for each of 16 input channels
2. Front panel individual channel LED status indicators for real-time signal state visualization
3. Built-in surge and transient voltage suppression circuit for field wiring lightning interference protection
4. Software-configurable input filter delay (0 ms – 500 ms adjustable) to eliminate contact bounce false triggering
5. Backplane communication via Metso proprietary D20 high-speed parallel bus
6. Real-time channel fault diagnostic reporting via DCS central controller
7. Hot-swappable rack mounting design for online module replacement without system shutdown

Performance Parameters

• Common mode rejection ratio (CMRR): ≥ 80 dB at 50 Hz industrial interference frequency
• Channel response delay: ≤ 1 ms without filter delay configuration
• Maximum field wiring cable length: 1000 m shielded twisted pair cable
• MTBF: 410,000 hours at 25 °C ambient operating temperature
• Contact bounce suppression range: 0–500 ms programmable threshold

Material Composition

• Front Panel Housing: ABS flame retardant industrial plastic, impact resistant
• Circuit Substrate: Double-sided FR-4 flame retardant PCB with gold-plated backplane edge connectors
• Isolation Components: High-speed optocoupler chips with reinforced insulation packaging
• Terminal Blocks: Spring-clamp PA66 flame retardant terminals for fast field wiring connection
• Internal Passive Components: Metal film resistors, ceramic safety capacitors, TVS surge suppression diodes

Structural Characteristics

• Compact single-width rack module design, occupies one standard D20 series rack slot
• Front-mounted removable terminal block for field wiring separation during module disassembly
• Vertical LED channel indicator array aligned with corresponding wiring terminal positions
• Integrated metal EMC shielding plate between digital circuit and backplane bus interface
• Spring-loaded locking latches on both sides for secure rack insertion and hot swap operation

Working Principle

Advantage Highlights

1. Full independent channel isolation eliminates cross-channel signal interference in multi-sensor wiring loops
2. Hot-swappable design reduces production downtime during module maintenance or replacement
3. Adjustable digital filter fully eliminates mechanical switch bounce false alarm signals
4. Wide operating temperature range supports underground mining and high-temperature metallurgical plant environments
5. Integrated surge protection eliminates requirement for external field signal lightning arrestors
6. High-speed D20 backplane bus ensures real-time discrete equipment state monitoring

Applicable Industries

Model Series Affiliation

Installation Requirements

1. Insert module horizontally into standard Metso D20 series DIN rack backplane slot, fully engage edge connector with backplane gold contact pins
2. Lock side spring latches to fix module position; confirm front panel LED power indicator illuminates after rack power supply energization
3. Field signal wiring uses 0.5 mm² – 1.5 mm² shielded twisted pair copper cables, shield grounding implemented at DCS cabinet side only
4. Maintain minimum 15 cm separation distance between field signal cables and high-power motor frequency converter wiring
5. Connect rack cabinet protective earth ground to eliminate system common mode voltage drift
6. Torque spring-clamp terminal block wiring to 0.5 N·m calibrated torque specification

Operation & Maintenance Precautions

1. For hot swap replacement operation, confirm DCS system allows online module modification before extracting unit from rack
2. Inspect front panel channel LED indicators daily to identify open-circuit or short-circuit field wiring faults
3. Avoid routing field signal cables adjacent to welding equipment, high-voltage transformers or large induction motors
4. Do not apply field input voltage exceeding 30 VDC to any channel terminal to prevent optocoupler component burnout
5. Execute module firmware upgrade only via official Metso DCS configuration software to avoid communication bus failure
6. Clean terminal block contact surfaces every 6 months to remove accumulated conductive dust causing signal instability