ABB DI620

Description

1. Product Description

2. Product Parameters

Parameter	Specification
Input Voltage	18–30V DC (sinking/sourcing, 6mA at 24V DC)
Channels	8 isolated DI channels (2 groups: 4 channels/group)
Isolation	500V AC (channel-to-channel), 1.5kV (I/O to bus)
Filter Time	Programmable: 2, 4, 8, 16 ms
Response Time	1 ms (signal detection)
Surge Protection	600V transient (TVS diode per channel)
Communication	Modbus RTU (RS-485) via MTU (TU810/TU814/TU830)
Operating Temperature	-20°C to +60°C (standard); +5°C to +55°C (certified range)
Dimensions	45 mm (W) × 102 mm (D) × 119 mm (H); 0.17 kg
Certifications	EN 61010, UL 61010, ATEX Zone 2, C1 Div 2, marine (ABS/BV/DNV/LR)

ABB DI620

3. Advantages and Features

• Isolated Architecture: 8-channel isolation (2 groups) prevents ground loops and ensures signal integrity in noisy environments.
• Surge & Reverse Polarity Protection: Built-in TVS diodes (600V surge) and reverse voltage protection safeguard against electrical faults.
• Configurable Filtering: Adjustable input filtering (2–16 ms) reduces false signals from mechanical contact bounce.
• Diagnostic LEDs: Real-time status indicators (channel ON/OFF, RUN, WARNING) for quick troubleshooting.
• Modular Compatibility: Hot-swap capable with ABB’s S800 I/O system (e.g., TU810V1, TU814V1), supporting vertical/horizontal mounting.

4. Application Fields and Cases

• Industries: Manufacturing (machine tools), energy (substation automation), water treatment, oil & gas, and automotive assembly.
• Use Case:
  • Automotive Assembly Line: Monitoring 8 proximity sensors on a robotic welding station. The DI620’s surge protection and 2 ms filtering reduced false triggers by 90%, improving production line uptime by 15% over six months.

5. Competitor Comparison

• Higher Channel Density: 8 isolated channels in a compact form (vs. 4–6 channels in 竞品), saving 40% cabinet space.
• Superior Surge Protection: 600V surge rating (vs. 400V typical), ideal for inductive loads (e.g., solenoids).
• Faster Response: 1 ms signal detection (vs. 2–3 ms in similar products), critical for high-speed automation.
  

  ABB DI620

6. Selection Recommendations

• Channel Requirement: Choose the DI620 for mid-density DI applications (8 channels); use DI810 for higher density (16 channels).
• Environment: Verify temperature range (+55°C max certified) and pollution degree (Degree 2) match site conditions.
• Redundancy: Pair with TU814 MTU for dual-channel communication in safety-critical systems.
• Cost Efficiency: Balances channel count and features—cost-effective for applications needing surge protection and filtering.

7. Precautions

• Wiring: Use shielded twisted-pair cables (max 600m) for long-distance signals; terminate with 16–24 AWG wires.
• Voltage Compliance: Ensure input voltage within 18–30V DC; avoid mixed voltage inputs (e.g., 12V/24V) on the same module.
• Installation: Mount vertically for optimal heat dissipation; avoid direct contact with liquids or corrosive gases.
• Maintenance: Regularly test channels via ABB System 800xA diagnostics; replace modules every 10 years (per ABB lifecycle guidelines).