TMEICA ARND-3119 A6 2N3A3119-B

Technical Specifications

1. Output Channel Quantity: 16 isolated digital output channels, split into two independent 8-channel power groups
2. Output Topology: NPN sinking transistor switching output
3. Standard Field Supply Voltage: 24 VDC; allowable operating range: 16 VDC ~ 32 VDC
4. Single Channel Continuous Rated Current: 1.0 A DC
5. Permitted Transient Peak Inrush Current Per Channel: 3 A DC, maximum duration 150 ms
6. Maximum Total Load Current Per 8-Channel Group: 7 A DC
7. Galvanic Isolation Rating: 2500 VDC reinforced optical isolation between rack backplane logic and field power circuits
8. Backplane Bus Interface: TMEIC high-speed redundant PLC rack communication bus
9. Channel Switching Latency: ≤75 μs turn-on delay, ≤60 μs turn-off delay
10. Inductive Surge Suppression Circuit: Three-stage cascaded TVS + RC absorption network, maximum withstand reverse kickback voltage 80 V
11. Operating Ambient Temperature Range: -20 °C ~ +70 °C cabinet internal air temperature
12. Storage Temperature Range: -45 °C ~ +95 °C
13. Module Physical Size: 110 mm Height × 34 mm Width × 125 mm Depth single-width rack standard form
14. Protection Class: IP20 indoor cabinet installation only
15. Net Weight: 0.36 kg

Functional Features

1. A6 revision hardware integrated enhanced aluminum passive heat sink for high-current channel continuous operation thermal management
2. Three-stage surge absorption network eliminates external snubber circuit requirements for ultra-high inductance field loads
3. Dual independent 8-channel power banks support complete electrical separation of safety shutdown circuits and normal production control circuits
4. Per-channel independent fast short-circuit protection with hardware latch; fault signal timestamped and uploaded to PLC CPU via backplane bus
5. Two configurable system failure modes: full output de-energize or hold last state during backplane communication loss
6. Individual bi-color LED per channel: green for normal ON state, red for short-circuit/overcurrent fault alarm
7. Full hot-swap compatible rack plug-in module; maintenance replacement without full rack mains power cut-off
8. All logic operation power sourced from PLC rack backplane, no separate auxiliary control power terminal

Working Principle

Material Composition

1. Outer Housing Shell: UL94-V0 flame retardant black ABS plastic enclosure
2. Main Control & Power PCB: High thermal conductivity FR-4 fiberglass circuit board, lead-free surface finish
3. Isolation Components: Reinforced reinforced insulation optical coupler chips with 2500 VDC dielectric strength
4. Power Switching Elements: Low saturation high-current power NPN transistors
5. Surge Protection Assembly: High-power bidirectional TVS diodes + precision wire-wound RC absorption resistors (A6 exclusive upgrade)
6. Thermal Dissipation Component: Embedded thin aluminum alloy passive heat sink attached to power transistor area of PCB
7. Wiring Terminal Block: Glass-filled PA66 insulated screw terminals with thick copper conductive inserts

Structural Characteristics

1. Standard single-width 34 mm vertical stacking form factor fully interchangeable with all other TMEIC ARND series rack I/O modules
2. Rear multi-pin gold-plated spring contact strip for rack backplane communication and internal logic power supply
3. Front fully detachable screw terminal block for rapid disconnection of all field wiring without module rack extraction
4. Internal PCB double-layer shielding partition separates low-voltage logic circuit zone and high-current field switching zone to eliminate signal crosstalk
5. Side integrated mechanical locking clip firmly fastens module to rack DIN rail to resist extreme vibration from rolling mills and mining machinery

Advantage Highlights

1. Industry-leading 1 A continuous single-channel output capacity supports high-power industrial actuators without parallel channel bridging
2. Three-stage cascaded surge suppression network removes need for external snubber components, simplifying cabinet wiring layout and reducing spare parts inventory
3. 2500 VDC reinforced isolation rating delivers stable operation under extreme electromagnetic interference heavy industry environments
4. Embedded aluminum passive heat sink ensures stable long-duration full-load operation without auxiliary cooling fans
5. Extended -20 °C low-temperature operating range adapts to unheated mine site and outdoor auxiliary control cabinets
6. Hot-swap maintenance design eliminates full rack power shutdown, minimizing production downtime during module fault replacement

Applicable Industries

Installation Requirements

1. Mount module only inside IP54 or higher sealed industrial PLC control cabinet; isolate from dust, high humidity, corrosive industrial gas
2. All field actuator wiring uses shielded twisted pair cable; cable shielding grounded at cabinet main earth terminal strip at single point only
3. Each 8-channel load power bank equipped with minimum 15 A rated overcurrent circuit breaker
4. Maintain minimum 20 mm vertical airflow clearance between adjacent rack I/O modules for passive heat dissipation
5. PLC rack metal frame rigidly connected to dedicated equipment protective earth bus for EMI noise suppression

Usage Precautions

1. Strictly prohibit field supply voltage exceeding 32 VDC connected to output terminals; catastrophic permanent damage to internal power transistors occurs
2. Verify peak inrush current of high-inductance loads does not exceed 3 A 150 ms transient limit to avoid recurring fault tripping
3. Perform full channel overcurrent protection calibration every 12 months for plant safety interlock and emergency shutdown circuits
4. Cut off external 24VDC field load power before detaching front wiring terminal block to prevent accidental channel short-circuit
5. Store spare modules in temperature-controlled low-humidity anti-static packaging to avoid optical coupler electrostatic discharge degradation