TMEIC ARND-3110

Technical Specifications

1. Digital Output Channel Count: 16 independent discrete output channels
2. Output Switch Type: NPN transistor sinking output, 24 VDC field load supply
3. Single Channel Rated Load Current: 0.5 A continuous per channel
4. Maximum Common Group Load Current: 4 A per 8-channel output group
5. Galvanic Isolation Rating: 1500 VDC optical isolation between PLC backplane bus and field output circuits
6. Backplane Communication Bus: TMEIC proprietary high-speed PLC rack internal bus
7. Response Switching Time: ≤100 μs channel on/off transition delay
8. Field Load Supply Voltage Range: 20 VDC – 28 VDC external 24 VDC power supply
9. Operating Ambient Temperature: -10 °C – 60 °C control cabinet temperature
10. Storage Temperature Range: -40 °C – 85 °C
11. Module Dimension: 110 mm (H) × 34 mm (W) × 120 mm (D) standard PLC rack width
12. Protection Class: IP20 indoor cabinet installation only
13. Net Weight: 0.29 kg

Functional Features

1. 16 independent output channels split into two isolated 8-channel groups for flexible load circuit partitioning
2. Per-channel over-current short-circuit protection with individual channel fault latch and backplane fault flag upload
3. Configurable fail-safe state: all outputs de-energized or hold last logic state upon PLC bus communication loss
4. Front panel per-channel LED status indicators displaying output on/off logic state
5. Hot-swap compatible module design; replacement without full PLC rack power shutdown
6. Built-in surge suppression TVS diodes on every output channel to absorb inductive load back EMF from solenoids and relays
7. No external auxiliary power required for internal logic; powered entirely via PLC rack backplane bus

Working Principle

Material Composition

1. Module Housing: UL94-V0 flame-retardant black ABS plastic enclosure
2. Main PCB: FR-4 high-temperature fiberglass circuit board with lead-free surface plating
3. Isolation Components: Reinforced optical coupler isolation chips
4. Output Power Devices: Low saturation voltage NPN power switching transistors
5. Wiring Terminal Block: PA66 insulated screw terminal strip with copper alloy conductive pins

Structural Characteristics

1. Standard single-width 34 mm PLC rack module form factor for vertical rack stacking with ARND series IO modules
2. Rear edge gold-plated backplane contact pins for rack bus communication and logic power supply
3. Front panel detachable multi-pin screw terminal block for field wiring connection
4. Two independent PCB isolation zones separating backplane logic circuit and field output switching circuit
5. Integrated mechanical locking clip to secure module to PLC rack DIN rail and resist vibration loosening

Advantage Highlights

1. Dual 8-channel isolated group design enables separate field load power supply for different process zones without cross-interference
2. Per-channel individual short-circuit protection limits fault impact to single actuator channel instead of full module shutdown
3. Hot-swap module capability reduces metallurgy, mining and power plant production downtime during IO module maintenance
4. Onboard TVS back EMF suppression eliminates need for external flywheel diodes on inductive solenoid loads
5. Wide operating temperature range adapts to unheated factory control cabinet environments in mineral processing plants
6. Compact single-width rack design maximizes channel density inside limited-size PLC control racks

Applicable Industries

Installation Requirements

1. Install module only inside IP54 rated industrial PLC control cabinet; avoid exposure to dust, moisture and corrosive process gas
2. Field output wiring uses shielded twisted pair cable for solenoid and relay load circuits; single-point cable shielding ground at cabinet terminal strip
3. External 24 VDC field load power supply equipped with minimum 10 A over-current circuit breaker per module
4. Maintain minimum 15 mm vertical airflow clearance between adjacent rack IO modules for passive heat dissipation
5. PLC rack protective earth ground bus connected to cabinet metal frame to suppress radiated EMI

Usage Precautions

1. Do not connect field load voltage exceeding 28 VDC to output terminals; permanent transistor breakdown occurs
2. Inductive solenoid valve loads must not exceed 0.5 A single channel rated current to avoid thermal overheating
3. Calibrate channel fault detection function every 12 months for safety-critical process actuation loops
4. Power down PLC rack fully before detaching front wiring terminal block to avoid accidental short-circuit of output channels
5. Store spare modules in low-humidity anti-static packaging to prevent optical coupler ESD damage