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ABB DSBC110 Bus Repeater 

1. Key Parameters

• Product Model: DSBC110
• Product Series: ABB PROFIBUS DP Bus Repeaters (Signal Extension & Isolation)
• Core Function: Amplifies and regenerates PROFIBUS DP signals to extend network distance; isolates bus segments to limit fault propagation; filters EMI/RFI noise; supports redundant power inputs; provides diagnostic visibility for network health
• Communication & Signal Specifications:

  Parameter	Details	Performance Metrics
  PROFIBUS DP Compatibility	- Protocol: PROFIBUS DP (EN 50170, Class 1)

  
  
  • Data Transfer Rate: 9.6kbps~12Mbps (auto-adaptive to network speed)
  • Signal Regeneration: Full signal reconstruction (not just amplification)
  • Maximum Segment Extension: 1.2km per repeater (with PROFIBUS-certified cable)
  • Cascading: Up to 9 repeaters per network (enabling 10.8km total distance) | Signal regeneration restores signal integrity to original quality, ensuring 12Mbps transmission even at maximum distance—critical for real-time control in large plants |
    | Isolation & Noise Filtering | - Electrical Isolation: 2.5kV AC between input and output bus segments
  • Noise Filtering: Integrated low-pass filter (10MHz cutoff) + common-mode noise suppression
  • Fault Isolation: Prevents segment-specific faults (e.g., shorted cable) from disrupting the entire network
  • EMC Compliance: EN 61326-3-1 (industrial environment) | Isolation limits faults to a single segment (e.g., a short in a production line segment won’t affect the main control room network); filtering reduces EMI-induced errors by 95% |
    | Power & Diagnostics | - Power Input: Dual redundant 24V DC (18~30V DC)
  • Power Consumption: <5W (typical)
  • Diagnostic Indicators: 4 LEDs (power A, power B, input signal, output signal, fault)
  • Fault Reporting: Digital fault output (24V DC, 1A) for integration with PLC/DCS | Redundant power ensures no repeater downtime during single power supply failure; LEDs provide at-a-glance network health (e.g., blinking input LED = weak signal) |
• Mechanical & Environmental Specifications:

  Parameter	Details	Performance Metrics
  Mechanical Design	- Dimensions: 75mm (W) × 100mm (H) × 120mm (D)

  
  
  • Mounting Type: 35mm DIN rail (EN 60715) or panel mount (2 threaded holes)
  • Housing Material: Flame-retardant ABS (UL 94 V0) with EMI-shielded internal components
  • Weight: Approximately 300g
  • Cable Connections: Screw terminals (for bus cables) + Phoenix-style power connectors | Compact DIN rail design fits in small control cabinets (e.g., remote I/O enclosures); EMI-shielded components prevent internal noise from interfering with signal processing |
    | Environmental Ratings | - Operating Temperature Range: -25℃~+70℃ (-13℉~158℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: 5%~95% RH (non-condensing, 40℃)
  • Vibration Resistance: 10~500Hz, 1g acceleration (IEC 60068-2-6)
  • Shock Resistance: 20g (11ms half-sine, IEC 60068-2-27) | Withstands harsh industrial conditions (e.g., remote pump stations, outdoor cabinets) without performance degradation |
• Compliance Standards: CE, RoHS, IEC 61131-2, UL 508, CSA C22.2 No.14, EN 61326-3-1 (EMC), ATEX II 3G/3D (hazardous area compatible with approval)

2. Key Features

• Full Signal Regeneration: Reconstructs PROFIBUS DP signals (not just amplifies) to restore original amplitude and timing—ensures 12Mbps data transmission even at maximum 1.2km segment distance, unlike basic amplifiers that degrade signal quality.
• 2.5kV Segment Isolation: Electrically isolates input and output bus segments—prevents fault propagation (e.g., a shorted cable in one segment won’t take down the entire network) and eliminates ground loops between distributed segments.
• Redundant Power Inputs: Dual 24V DC inputs with automatic switchover—ensures the repeater remains operational during single power supply failure (e.g., UPS outage in a remote segment), maintaining network continuity.
• Cascadable Design: Supports up to 9 repeaters in a single network—enables ultra-long distance deployments (up to 10.8km) for large facilities (e.g., multi-building manufacturing plants, pipeline monitoring systems).
• Integrated Noise Filtering: Low-pass filter and common-mode suppression reduce EMI/RFI interference—blocks noise from nearby VFDs, motors, or high-voltage cables, ensuring stable communication in electrically noisy environments.
• Simple DIN Rail Installation: Compact form factor and standard 35mm DIN rail mounting—fits in small remote cabinets (e.g., near field sensors) and requires no specialized tools for installation.
• At-A-Glance Diagnostics: LEDs for power, signal status, and faults—technicians can quickly identify issues (e.g., no output signal = faulty cable) without connecting to a computer, reducing troubleshooting time.

3. Application Fields

• Large-Scale Industrial Networks: Extending network distance for distributed I/O:
  • Automotive Manufacturing Plants: Connects S800 I/O modules across 5 production lines (1km apart) to a central PLC—3 cascaded DSBC110 repeaters enable 3.6km total distance, ensuring real-time robot control and part tracking.
  • Warehouse Automation: Extends PROFIBUS DP network from the control room to remote conveyor zones (1.2km away)—signal regeneration maintains 12Mbps speed for barcode scanners and automated guided vehicles (AGVs).
• Process Industry Distributed Control: Linking remote process units:
  • Oil Refineries: Connects S800 modules monitoring storage tanks (2km from the main DCS) via 2 cascaded repeaters—segment isolation ensures a tank sensor fault won’t disrupt reactor control.
  • Chemical Complexes: Extends network to remote mixing units (1.2km away)—redundant power and EMI filtering ensure reliable communication for batch process control, complying with ISO 9001 quality standards.
• Infrastructure & Utilities: Long-distance monitoring and control:
  • Water Distribution Systems: Links flow/pressure sensors in remote pump stations (3km from SCADA) via 3 repeaters—enables real-time monitoring of water mains without expensive fiber optic cables.
  • Wind Farms: Connects S800 modules in wind turbines (1km apart) to a central control center—cascaded repeaters and EMI filtering withstand turbine electrical noise, ensuring accurate power output monitoring.
• Hazardous & Remote Environments: Ensuring reliability in harsh conditions:
  • Offshore Platforms: Extends network to wellhead sensors (1.2km from the platform control room)—ATEX compatibility and rugged design withstand salt spray and vibration, maintaining pressure/temperature monitoring.
  • Mining Operations: Connects underground S800 modules (1km from surface control) via a DSBC110 in a 防爆 enclosure—signal regeneration and noise filtering overcome harsh underground electrical conditions.

4. Precautions

• Network Compatibility (Critical): Use only with PROFIBUS DP networks (EN 50170) and ABB S800 I/O systems—non-PROFIBUS protocols (e.g., Modbus) or non-certified cables will cause communication failures; verify cable compliance with PROFIBUS DP standards (AWG 22~24 twisted-pair).
• Installation & Wiring Safety:
  • Bus Cable Selection: Use only PROFIBUS-certified twisted-pair cable with proper shielding—non-certified cable limits maximum distance to <300m and increases noise susceptibility; ground the cable shield at one end only.
  • Termination Setup: Ensure the first and last devices in each bus segment have 150Ω termination resistors—missing termination causes signal reflections, leading to data errors (e.g., corrupted sensor readings).
  • Power Wiring: Connect dual power inputs to separate PDUs (preferably with independent UPS backup)—sharing power supplies defeats redundancy; ensure input voltage is within 18~30V DC to avoid damage.
• Operation & Maintenance:
  • Cascading Limits: Do not exceed 9 repeaters in a single network—additional repeaters introduce latency (>1ms per repeater), which may disrupt time-sensitive control (e.g., turbine speed regulation).
  • 定期检查: Perform monthly inspections for:
    • LED status (both power LEDs illuminated = normal; blinking input LED = weak signal; red fault LED = investigate immediately)
    • Cable connections (tighten terminals to 0.5Nm torque—loose connections cause intermittent signal loss)
    • Power voltage (verify both inputs are 24V DC ±10%—undervoltage causes signal degradation)
    • Environmental conditions (ensure the repeater is not exposed to condensation or temperatures >70℃)
  • Fault Handling: For no output signal, first check the input cable and termination—if the input LED is off, replace the cable; if the input LED is on but output is off, test the repeater with a known-good cable.
• Environmental Limitations:
  • Hazardous Areas: Install only in ABB-certified 防爆 enclosures for Zone 2/22 hazardous areas—non-certified installations risk ignition in flammable atmospheres (e.g., solvent storage); confirm ATEX approval before use.
  • Extreme Vibration: In high-vibration environments (e.g., near reciprocating compressors), secure the repeater with additional DIN rail clips—excessive vibration loosens cable connections, leading to intermittent faults.

The structure and details of the product：

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