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ABB DSHM301 57350001-K Extension Module Terminal Unit 

1. Key Parameters

• Product Model: DSHM301 57350001-K
• Product Series: ABB S800 I/O I/O Expansion Terminal Units (Signal Conditioning & Connectivity)
• Core Function: Expands S800 I/O connectivity via terminal blocks; conditions field signals (filtering, isolation); enables hot-swappable I/O module connections; provides fault detection for wiring errors; facilitates organized cable management
• Terminal & Signal Specifications:

  Parameter	Details	Performance Metrics
  Terminal Configuration	- Channel Count: 32 universal terminals (supports digital I/O, analog I/O, and power signals) - Terminal Type: Screw terminals (accepts 0.5~4mm² wire gauge) - Wiring: Front-accessible, color-coded (for signal type differentiation) - Signal Compatibility: Digital (24V DC), analog (4~20mA/0~10V), power (24V DC/230V AC)	Universal terminals reduce component variety; color coding minimizes wiring errors (e.g., red for power, blue for analog)
  Signal Conditioning	- Filtering: Configurable low-pass filter (1ms~10ms) for analog/digital signals - Isolation: 2.5kV AC optical isolation between field signals and S800 backplane - Surge Protection: ±10kV surge (IEC 61000-4-5) per terminal - Polarity Protection: Reverse polarity tolerance (-30V DC) for digital inputs	Filtering suppresses EMI-induced noise; isolation eliminates ground loops; surge protection withstands field transients

• Integration & Mechanical Specifications:

  Parameter	Details	Performance Metrics
  Integration with S800	- Compatibility: S800 digital (DSDI301, DSDO301) and analog (DSAI110, DSAO110) I/O modules - Connection: S800 bus backplane (direct plug-in to DSBB series backplanes) - Hot-Swap Support: Enables hot-swapping of connected S800 I/O modules (no system shutdown) - Diagnostics: Wiring error detection (open circuit, short circuit, reverse polarity) via LED indicators	Hot-swap capability reduces maintenance downtime; diagnostics identify wiring issues before system startup
  Mechanical Design	- Dimensions: 100mm (W) × 160mm (H) × 210mm (D) (S800 module form factor) - Mounting: ABB DSBB102/DSBB107 bus backplanes (35mm DIN rail compatible via adapter) - Housing Material: Flame-retardant ABS plastic (UL 94 V0) with EMI shielding - Protection Rating: IP20 (front panel, for rack-mounted use) - Weight: Approximately 750g - LEDs: 32 channel LEDs (green = normal, red = fault) + 1 module status LED	Compact size fits 19-inch racks; EMI shielding blocks 10MHz~1GHz interference; IP20 rating suits control room environments

• Environmental & Compliance 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)
  • Compliance Standards: CE, RoHS, IEC 61131-2, UL 508, CSA C22.2 No.14, EN 61326-3-1 (EMC)

2. Core Features

• 32-Channel Universal Terminals: Supports digital I/O, analog signals, and power connections via a single terminal unit—reduces the need for multiple specialized terminals, simplifying inventory and installation (e.g., 16 digital inputs + 8 analog outputs + 8 power lines on one unit).
• Built-In Signal Conditioning: Configurable low-pass filters and 2.5kV AC optical isolation—suppresses noise from VFDs/motors and eliminates ground loops between field devices (e.g., sensors in separate power panels), ensuring accurate signal transmission to S800 I/O modules.
• Hot-Swap Enabled I/O Connections: Facilitates hot-swapping of connected S800 I/O modules—technicians can replace faulty modules during system operation without shutting down the process, minimizing maintenance-related downtime (critical for 24/7 production lines).
• Wiring Error Diagnostics: Per-channel LEDs for open circuits, short circuits, and reverse polarity—identifies wiring issues (e.g., a reversed sensor power connection) before system startup, reducing troubleshooting time and preventing I/O module damage.
• EMI-Shielded Housing: Flame-retardant ABS with built-in EMI shielding—blocks high-frequency interference from industrial equipment (e.g., welding machines, high-voltage cables), ensuring stable signal conditioning in electrically dense environments.
• Front-Accessible, Color-Coded Terminals: Front-facing, color-coded screw terminals (0.5~4mm² wire gauge)—simplifies cable management and wiring checks; color coding (e.g., black for digital, yellow for analog) minimizes human error during installation.
• Seamless S800 Integration: Plugs directly into DSBB-series backplanes and auto-detects via S800 bus—requires no manual configuration of terminal mappings, reducing commissioning time by 30% compared to third-party extension units.
• Wide Environmental Range: Operates reliably from -25℃ to +70℃—suitable for unconditioned control cabinets (e.g., outdoor pump stations, factory floors) without additional heating/cooling, expanding deployment flexibility.

3. Application Fields

• Large-Scale Manufacturing: Expanding I/O for production lines:
  • Automotive Assembly Plants: Extends S800 I/O connectivity for 32 sensors/actuators (e.g., proximity sensors for part presence, small solenoids for tool changes)—signal filtering suppresses noise from robotic arms, ensuring accurate I/O readings.
  • Electronics Production Lines: Conditions analog signals from PCB test equipment (e.g., 4~20mA current for voltage measurements)—optical isolation eliminates ground loops between test stations, preventing false test results.
• Process Plants & Refineries: Centralized I/O expansion:
  • Chemical Processing Plants: Expands terminals for 16 analog temperature sensors (0~10V) and 16 digital valve status inputs—wiring diagnostics identify shorted sensor cables before startup, avoiding process upsets.
  • Oil Refineries: Connects field devices (e.g., pressure transmitters, level switches) to S800 I/O modules—surge protection withstands lightning-induced transients in outdoor installations, protecting sensitive I/O electronics.
• Remote Infrastructure & Utilities: Extending I/O to distant sites:
  • Water Treatment Plants: Expands terminals for remote pump sensors (digital run status) and chemical dosing valves (analog outputs)—hot-swap capability allows replacement of I/O modules without stopping water treatment.
  • Solar Farms: Conditions analog signals from solar panel inverters (4~20mA for power output) and connects digital fault inputs—EMI shielding resists interference from inverter electronics, ensuring accurate data transmission to S800 controllers.
• Machine Tool & Robotics: Organized I/O connectivity:
  • CNC Machining Centers: Consolidates terminals for coolant level sensors (analog), spindle speed encoders (digital), and emergency stops (digital)—color-coded terminals simplify maintenance and reduce wiring errors during service.
  • Material Handling Robots: Extends I/O for gripper sensors (digital) and conveyor speed controls (analog)—signal isolation eliminates ground loops between robot and conveyor power systems, preventing erratic robot behavior.

The structure and details of the product：

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