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ABB DSMB115 Memory Module  

1. Key Parameters

• Product Model: DSMB115
• Product Series: ABB S800 I/O Versatile Industrial Memory Modules (Data Storage & Caching)
• Core Function: Provides non-volatile storage for control logic, configuration files, and process logs; offers error-correcting volatile memory for real-time data; supports data backup/restore via S800 bus; enables basic fault detection; integrates with S800 controllers for low-latency memory access
• Memory & Storage Specifications:

  Parameter	Details	Performance Metrics
  Non-Volatile Memory (NVM)	- Type: Industrial-grade Single-Level Cell (SLC) Flash

• Capacity: 128MB (fixed, no expansion slot)
• Data Retention: 15 years (at 25℃, no power)
• Write Cycles: 100,000+ program/erase cycles (per sector)
• Access Speed: 30MB/s read, 15MB/s write | SLC Flash ensures stable performance for frequent logic updates; 128MB capacity suits mid-scale needs (e.g., 50+ control programs) |
  | Volatile Memory (RAM) | - Type: Error-Correcting Code (ECC) RAM
• Capacity: 32MB (for real-time data caching)
• Backup: Single 3V lithium battery (48-hour retention without main power)
• Error Correction: Single-bit error correction, double-bit error detection | ECC RAM prevents data corruption from electrical noise; 48-hour backup preserves critical data (e.g., batch counts) during short outages |
  | Data Integrity Features | - Checksum Validation: CRC-32 for all stored files
• Wear Leveling: Basic static wear leveling (extends Flash lifespan by 30%)
• Bad Block Management: Passive bad block detection (flags corrupted blocks via S800 bus) | CRC-32 validation ensures no corrupted data is loaded into controllers; simple wear leveling suits moderate write-frequency applications |
• Mechanical & Environmental Specifications:

  Parameter	Details	Performance Metrics
  Mechanical Design	- Dimensions: 100mm (W) × 160mm (H) × 210mm (D) (S800 module form factor)

• Mounting Type: ABB DSBB102/DSBB107 bus backplanes (35mm DIN rail compatible via adapter)
• Housing Material: EMI-shielded ABS plastic (UL 94 V0) with metal reinforcing
• Weight: Approximately 550g
• LED Indicators: 4 LEDs (power, NVM access, RAM backup, error) | Compact design fits standard S800 racks; basic EMI shielding blocks 10MHz~1GHz interference |
  | Environmental Ratings | - Operating Temperature Range: -20℃~+60℃ (-4℉~140℉)
• 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: 15g (11ms half-sine, IEC 60068-2-27) | Withstands moderate industrial conditions (e.g., factory floors, indoor control cabinets) without performance loss |
• Compliance Standards: CE, RoHS, IEC 61131-2, UL 508, CSA C22.2 No.14, EN 61326-3-1 (EMC) |

2. Core Features

• Balanced Storage Capacity: 128MB SLC Flash and 32MB ECC RAM—provides sufficient space for mid-scale applications (e.g., 50+ control logic files, 1-month process logs) without overcapacity, optimizing cost-effectiveness for non-critical systems.
• ECC RAM with Battery Backup: 32MB error-correcting RAM corrects single-bit errors, while a 48-hour lithium battery preserves data during short power outages—ensures reliability for auxiliary processes (e.g., conveyor control) without the cost of dual-battery redundancy.
• Industrial-Grade SLC Flash: 100,000+ write cycles and 15-year data retention—suits moderate update frequencies (e.g., daily recipe changes in food packaging) and ensures long-term stability for infrequently modified configurations.
• Basic Data Integrity Tools: CRC-32 checksum validation and static wear leveling—prevents corrupted files from being loaded into controllers and extends Flash lifespan, reducing maintenance needs in low-to-medium duty cycles.
• Seamless S800 Integration: Plugs directly into DSBB-series backplanes and auto-detects via native protocol—enables plug-and-play operation with S800 controllers (e.g., DSDON001), reducing setup time by 25% compared to third-party modules.
• Cost-Effective Design: ABS housing with metal reinforcing balances durability and affordability—ideal for non-safety-critical applications (e.g., material handling) where extreme ruggedness is unnecessary but reliability is still required.
• At-A-Glance Diagnostics: 4 status LEDs (power, NVM access, RAM backup, error)—enables quick identification of issues (e.g., low battery, Flash errors) without controller access, simplifying troubleshooting for maintenance teams.

3. Application Fields

• Manufacturing Auxiliaries: Mid-scale data management:
  • Conveyor Systems: Stores control logic (128MB Flash) and caches real-time belt speed data (32MB RAM)—battery backup preserves counts during brief outages, avoiding production resets; basic EMI shielding resists motor noise.
  • Packaging Machines: Retains 50+ product configurations (SLC Flash) and batch logs—CRC-32 validation ensures no corrupted settings are used, reducing packaging defects.
• Process Skids & Small Plants: Balanced storage needs:
  • Water Treatment Skids: Stores pump control logic and 1-month flow logs—15-year Flash retention ensures long-term configuration stability; 48-hour battery backup preserves data during utility outages.
  • Chemical Dosing Units: Caches real-time chemical level data (ECC RAM) and stores dosing recipes—simple design reduces costs for non-critical skids while maintaining reliability.
• Building Automation: Auxiliary system storage:
  • HVAC Zone Controllers: Stores temperature setpoint configurations (Flash) and caches occupancy data (RAM)—cost-effective solution for mid-sized commercial buildings; wide temperature range suits unconditioned mechanical rooms.
  • Elevator Control Panels: Retains fault logs and operation parameters—LED diagnostics simplify on-site troubleshooting by maintenance teams.
• Food & Beverage Small Lines: Practical data storage:
  • Snack Food Packaging: Manages 30+ product recipes (Flash) and real-time weight data (RAM)—SLC Flash withstands daily recipe updates; battery backup prevents data loss during clean-in-place (CIP) power cycles.
  • Beverage Dispensers: Stores ingredient mixing ratios and sales logs—compact design fits under-counter control boxes; basic environmental ratings suit indoor settings.

4. Precautions

• System Compatibility (Critical): Use only with ABB S800 non-redundant controllers (e.g., DSDON001, DSCL110) and DSBB102/DSBB107 backplanes—redundant systems require DSMB112; verify via ABB’s DSMB115 compatibility list.
• Installation & Wiring Safety:
  • Battery Replacement: Replace the lithium battery (part no. 3HAC028357-001) every 3 years or when "RAM backup" LED blinks—disconnect main power before replacement to avoid data loss; use only ABB-approved batteries.
  • Grounding: Connect the module’s PE terminal to a control ground (resistance ≤1Ω) using 2.5mm² cable—shared grounding may cause EMI-induced errors in sensitive environments (e.g., near VFDs).
  • Memory Access: Avoid frequent simultaneous read/write operations (e.g., logging + logic updates)—this increases Flash wear; schedule non-critical logs during low-activity periods.

The structure and details of the product：

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