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ABB DSBB110 Shielding Plate 

1. Key Parameters

• Product Model: DSBB110
• Product Series: ABB S800 I/O Accessory Shielding Plates (EMI/RFI Noise Mitigation)
• Core Function: Reduces electromagnetic interference (EMI) and radio frequency interference (RFI) in S800 I/O systems; provides physical separation between noise sources and sensitive electronics; enhances signal integrity in analog/digital modules; ensures compliance with EMC standards
• Shielding & Electrical Specifications:

  Parameter	Details	Performance Metrics
  Shielding Performance	- Material: Tinned cold-rolled steel (0.3mm thickness) with conductive coating

  
  
  • Shielding Effectiveness: ≥60dB (10MHz~1GHz)
  • Attenuation: Reduces EMI-induced noise by ≥99.9% in critical frequency range
  • Grounding: Integral grounding clips (5 points) for low-resistance (<10mΩ) connection to backplane | High attenuation protects sensitive analog signals (e.g., 4~20mA pressure sensors) from noise, reducing measurement errors by 80% in high-EMI environments |
    | Compatibility & Integration | - Compatible Backplanes: DSBB102 (8-slot), DSBB107 (16-slot)
  • Module Compatibility: All S800 I/O modules (no height restriction)
  • Installation: Mounts between bus backplane and module front panels
  • Connection: Tool-free snap-fit mounting with conductive gaskets | Seamless integration with existing S800 systems—no modifications required to modules or backplanes; snap-fit design reduces installation time to <5 minutes |
    | Mechanical Integrity | - Dimensions: 325mm (L) × 115mm (W) × 5mm (H) [for DSBB102]; 645mm (L) × 115mm (W) × 5mm (H) [for DSBB107]
  • Weight: 350g (8-slot); 680g (16-slot)
  • Operating Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Corrosion Resistance: Tinned steel with passivation layer (1000-hour salt spray resistance) | Durable construction withstands industrial handling and environmental exposure; temperature range matches S800 system specifications |
• Compliance Standards:
  • EMC: EN 61326-3-1 (industrial environments)
  • Materials: RoHS compliant (no hazardous substances)
  • Safety: UL 94 V0 (flammability rating)
  • Manufacturing: ISO 9001 certified production

2. Key Features

• High-Performance EMI Shielding (≥60dB): Tinned steel construction with conductive coating attenuates noise across 10MHz~1GHz—critical for protecting sensitive analog modules (e.g., DSAI303) from interference in environments with VFDs, large motors, or high-voltage equipment.
• Low-Resistance Grounding: Integral grounding clips ensure <10mΩ connection to the bus backplane—creates a unified ground plane that shunts noise away from module electronics, preventing ground loops that cause measurement errors.
• Seamless S800 Integration: Designed specifically for DSBB102 (8-slot) and DSBB107 (16-slot) backplanes—snap-fit mounting requires no tools or modifications to existing systems, simplifying retrofits in noisy environments.
• Full Module Compatibility: Accommodates all S800 I/O modules without height restrictions—works with analog, digital, and specialty modules (e.g., DSAV110 servo control) while maintaining full access to module indicators and connectors.
• Durable Corrosion-Resistant Design: Tinned steel with passivation layer resists corrosion (1000-hour salt spray rating)—suitable for humid or aggressive environments (e.g., chemical plants, coastal facilities) without performance degradation.
• Temperature-Matched Performance: -40℃~+85℃ operating range matches S800 system specifications—ensures shielding effectiveness remains consistent in extreme temperature environments, from cold storage facilities to furnace control rooms.

3. Application Fields

• High-Noise Industrial Environments: Primary use where EMI is a critical concern:
  • VFD-Intensive Facilities: Protects S800 I/O modules in factories with variable frequency drives (e.g., automotive plants, textile mills)—reduces noise-induced errors in analog sensors (e.g., pressure, temperature) by 80% or more.
  • Power Generation Control Rooms: Shields I/O modules near generators, transformers, and high-voltage switchgear—prevents electrical noise from disrupting critical measurements (e.g., turbine vibration, boiler pressure).
• Sensitive Process Measurement: Ensuring accuracy in precision applications:
  • Pharmaceutical Manufacturing: Protects analog input modules (DSAI303) measuring small pH or conductivity changes—maintains measurement precision (±0.01pH) in environments with nearby mixing motors.
  • Semiconductor Facilities: Shields I/O modules controlling ultra-precise temperature and flow systems—prevents EMI from cleanroom HVAC motors from affecting nanoscale process control.
• Heavy Industrial Settings: Mitigating noise in harsh environments:
  • Steel Mills & Foundries: Protects I/O modules near arc furnaces and rolling mills—high-temperature tolerance and robust shielding maintain signal integrity despite extreme electrical noise.
  • Mining Operations: Shields control system I/O in environments with large crushers and conveyors—resistant to vibration and dust while blocking noise that would otherwise corrupt sensor data.
• Critical Infrastructure: Ensuring reliability in essential services:
  • Water Treatment Plants: Protects I/O modules near large pumps and blowers—prevents noise from disrupting chemical dosing control loops, ensuring regulatory compliance for water quality.
  • Oil & Gas Pipelines: Shields remote I/O cabinets containing S800 modules—blocks noise from pipeline pumps and compressors, maintaining accurate flow and pressure measurements.

4. Precautions

• Compatibility (Critical): Use only with ABB DSBB102 (8-slot) and DSBB107 (16-slot) bus backplanes—non-compatible backplanes will not properly engage with the shielding plate’s mounting clips, reducing shielding effectiveness by up to 50%.
• Installation & Grounding Safety:
  • Proper Mounting: Ensure all snap-fit clips engage fully with the backplane—partial engagement creates gaps in shielding, allowing noise leakage; verify by checking that the plate lies flat against module front panels.
  • Ground Continuity: Confirm low-resistance connection between shielding plate and system ground (use a multimeter to check resistance <100mΩ)—broken ground paths eliminate shielding benefits, leaving modules vulnerable to EMI.
  • Module Clearance: Do not modify the plate (e.g., cutting holes) to accommodate non-standard modules—modifications create noise leakage paths; use only ABB-approved S800 modules with the shielding plate.
• Operation & Maintenance:
  • Periodic Inspection: Check quarterly for:
    • Secure mounting (no loose clips or gaps)
    • Ground connection integrity (no corrosion on grounding clips)
    • Physical damage (dents or bending that create gaps)
    • Conductive gasket condition (no cracks or contamination)
  • Cleaning: Remove dust with a dry cloth—do not use conductive cleaners (e.g., water, alcohol) which can degrade the protective coating or create conductive paths.
  • Replacement of Gaskets: Replace conductive gaskets every 3 years or if damaged—worn gaskets reduce shielding effectiveness by creating gaps between the plate and modules.
• Environmental Limitations:
  • Chemical Exposure: Avoid direct contact with strong acids, alkalis, or solvents—these degrade the tinned coating, reducing corrosion resistance and shielding performance; use protective enclosures in chemical processing areas.
  • Extreme Vibration: In high-vibration environments (e.g., near large reciprocating compressors), secure the plate with additional clips (ABB part no. DSBB-CLIP01)—prevents loosening that creates shielding gaps.
• Replacement & Spare Parts:
  • Genuine ABB Components: Use only genuine DSBB110 plates—non-genuine products use inferior materials (e.g., uncoated steel) that provide <30dB shielding, leaving modules vulnerable to EMI; verify authenticity via ABB’s serial number lookup tool.
  • Spare Inventory: Maintain 1 spare plate per 5 shielded I/O racks—critical for rapid replacement if damage occurs (e.g., during module maintenance); store spares in dry environments to prevent gasket degradation
•  

The structure and details of the product：

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