Technical Specifications
- Number of Digital Output Channels: 16 sinking transistor output channels
- Output Type: NPN sinking transistor, 24 VDC nominal field load voltage
- Per-Channel Continuous Output Current: 0.5 A maximum
- Channel-to-Backplane Isolation Voltage: 500 Vrms galvanic optocoupler isolation
- Backplane Operating Supply: 24 VDC nominal (10–30 VDC operating range)
- Module Maximum Consumption Current: 210 mA
- Operating Temperature Range: -10 °C ~ +60 °C
- Storage Temperature Range: -40 °C ~ +85 °C
- Humidity Tolerance: 5% – 95% relative humidity, non-condensing
- Vibration Resistance: 1.5 g (10–150 Hz per IEC 60068-2-6)
- Transistor Switching Cycle Life: Unlimited solid-state cycle rating (no mechanical wear)
- Output Switch Response Time: ≤ 0.5 ms actuation delay
- Dimensions (W×H×D): 100 mm × 70 mm × 30 mm
- Net Weight: 0.48 kg
- Certifications: CE, UL 508, IECEx general industrial certification
Functional Features
- 16 independent optocoupler isolated sinking transistor output channels
- Per-channel built-in freewheeling diode for inductive load back-EMF suppression
- Front panel dedicated LED status indicator for every single output channel
- Independent per-channel overcurrent short-circuit protection with self-resetting recovery
- Software configurable pulse width modulation (PWM) output mode via DCS host software
- Real-time channel overload fault diagnostic reporting to DCS central controller
- Hot-swappable rack mounting design supporting online module replacement without full system stop
Performance Parameters
- Channel leakage current (OFF state): ≤ 10 μA at 24 VDC field voltage
- Maximum permissible field cable length: 800 m shielded twisted pair cable
- Common mode rejection ratio: ≥ 82 dB at 50 Hz industrial power interference
- Mean time between failures (MTBF): 430,000 hours at 25 °C ambient temperature
- PWM output frequency adjustable range: 0.1 Hz – 1000 Hz
Material Composition
- Front Panel Housing: High impact ABS flame retardant industrial plastic
- Circuit Substrate: Double-sided FR-4 flame retardant PCB with gold-plated backplane edge connectors
- Isolation Devices: High-speed single-channel optocoupler chips with reinforced insulation packaging
- Switching Devices: Silicon NPN power transistor array with low saturation voltage
- Terminal Blocks: Spring-clamp PA66 flame retardant terminals with tin-plated copper conductors
- Protection Components: Fast recovery freewheeling diodes, PTC self-resetting fuses
Structural Characteristics
- Single-width compact D20 standard rack slot form factor, fully interchangeable with all D20 I/O modules
- Front terminal block array one-to-one aligned with channel LED indicators for fast troubleshooting
- Internal metal EMC shielding partition separating digital bus circuit and field output drive circuit
- Dual spring locking latches on left and right sides for stable rack fixation during hot swap
- Passive planar heat dissipation layout without auxiliary cooling fan requirements
Working Principle
DCS main controller transmits switching or PWM commands through proprietary D20 parallel backplane bus to module logic unit; command signals pass through optocoupler isolation barrier to eliminate ground loop interference between rack and field equipment; isolated signal triggers NPN sinking transistor conduction to complete 24 VDC field load circuit; freewheeling diodes absorb reverse voltage spike generated by inductive loads during switch-off; PTC fuses monitor each channel load current, cut off output when overcurrent threshold is reached and restore operation automatically after fault clearance; module continuously uploads channel status and overload fault codes to host DCS in real time.
Advantage Highlights
- Unlimited solid-state switching cycle life with zero mechanical contact abrasion, ideal for high-frequency switching applications
- Ultra-fast sub-millisecond output response supports high-speed PWM proportional control
- High-density 16-channel design reduces cabinet slot occupation compared to relay output modules
- Integrated independent per-channel short-circuit protection prevents cross-channel fault propagation
- Full hot-swap capability cuts maintenance downtime without entire system shutdown
- Built-in inductive load surge suppression eliminates external snubber component installation
Applicable Industries
Mining conveying system indicator light control, pulp & paper small solenoid valve drive, chemical plant proportional dosing actuator PWM regulation, aggregate crusher auxiliary sensor power supply, wastewater treatment low-power valve actuator control, food processing packaging equipment digital signal output
Model Series Affiliation
Metso D2011XX Digital Transistor Output Module Subseries (Standard Non-Low Noise Version)
Installation Requirements
- Horizontally insert module into standard Metso D20 DIN rack backplane slot, fully engage gold-plated backplane connectors
- Lock bilateral spring latches tightly and confirm power LED lights up after rack power energization
- Field load wiring adopts 0.3 mm² – 1.0 mm² shielded twisted pair copper cables; cable shield grounded only at DCS cabinet end
- Maintain minimum 15 cm separation distance between output signal cables and high-power inverter cables
- Connect rack cabinet protective earth terminal to eliminate static accumulation on circuit board
- Tighten spring-clamp terminal wiring with calibrated torque of 0.5 N·m
Operation & Maintenance Precautions
- Execute hot swap replacement only after disabling all output control logic for relevant channels in DCS software
- Monthly visual inspection of front panel LED indicators to identify persistent overload fault channels
- Forbid wiring loads exceeding 0.5 A per single channel to avoid transistor permanent burnout
- Do not deploy module in environments containing conductive metal dust, corrosive acid/alkali gas or explosive vapor mixtures
- Firmware upgrade operations must be completed through official Metso DNA configuration software only
- Clean terminal block conductive contact surfaces every 6 months to remove dust-induced signal instability
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