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ABB IMASI03 Analog Input Slave Module  

1. Key Parameters

• Product Model: IMASI03
• Order Code Reference: Typically paired with ABB AC800M system accessories (e.g., 3BSE008515R1 PROFIBUS DP cable, 3BSE003649R1 terminal block kit)
• Product Series: ABB AC800M Distributed I/O Slave Modules (PROFIBUS DP, Analog Input)
• Core Function: Acquires 8-channel analog signals (current/voltage) from field sensors; performs signal conditioning (filtering, linearization); transmits data to AC800M master via PROFIBUS DP; provides real-time diagnostic information (e.g., sensor open circuit, overrange); supports distributed process monitoring
• Electrical Specifications:

  Parameter	Details	Performance Metrics
  Input Channels	8 independent analog input channels (configurable per channel)	Covers multi-sensor signal acquisition needs
  Input Signal Types	- Current: 4~20mA DC (2-wire/4-wire transmitters compatible) - Voltage: 0~10V DC, ±10V DC (configurable per channel)	Supports most industrial analog sensors
  Measurement Accuracy	- Current: ±0.1% of full scale (FS) at 25℃ - Voltage: ±0.15% FS at 25℃ - Temperature Drift: ≤±0.002% FS/℃	Ensures precise process variable monitoring (e.g., ±0.02mA error for 4~20mA signals)
  Signal Conditioning	- Low-pass filter: 0.1Hz~1kHz (configurable via Control Builder M) - Overrange detection: 120% FS (alarm output) - Open-circuit detection: <3.5mA (for 4~20mA sensors)	Reduces EMI noise; alerts to sensor faults
  Communication Protocol	PROFIBUS DP V1 (slave mode); Baud rate: 9.6kbps~12Mbps (auto-negotiation with master) - Cycle time: ≤1ms (for 8 channels)	Fast data transmission for real-time control
  Power Supply	24V DC ±10% (redundant input optional); Current consumption: ≤50mA (no load); ≤150mA (full load)	Compatible with standard industrial 24V DC power systems
  Isolation Level	- Channel-to-channel: 500Vrms (1min) - Input-to-bus: 2kVrms (1min) - Input-to-power: 2kVrms (1min)	Prevents ground loops and EMI coupling

• Mechanical Specifications:
  • Housing Material: Flame-retardant thermoplastic (UL94 V-0); Impact resistance: IK04
  • Dimensions (W×H×D): 22mm × 100mm × 160mm (fits AC800M distributed I/O racks; DIN rail-mountable)
  • Mounting: 35mm standard DIN rail (TS 35/7.5); Snap-on installation (no tools required)
  • Weight: Approximately 140g
  • Terminals: 2× 16-pin spring-cage terminals (for sensor wiring); 1× 9-pin D-sub connector (PROFIBUS DP)
  • LED Indicators:
    • Power (PWR): Green (24V DC active); Red (power fault)
    • Bus (BUS): Green (PROFIBUS DP communication normal); Flashing green (data transmission); Red (bus fault)
    • Channel (CH1~CH8): Green (signal normal); Amber (overrange/warning); Red (open circuit/fault)
• Environmental Ratings:
  • Operating Temperature Range: -25℃~+60℃ (-13℉~140℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: ≤95% RH (non-condensing, 40℃; suitable for damp process areas)
  • Vibration Resistance: 10~500Hz, 1g acceleration (IEC 60068-2-6; no signal loss)
  • Shock Resistance: 15g acceleration (11ms duration, IEC 60068-2-27; maintains bus communication)
  • EMC Immunity: Complies with IEC 61000-4-2 (ESD: ±8kV contact); IEC 61000-4-4 (EFT: ±2kV); IEC 61000-4-6 (RS: 10V/m) | Resists noise from motors/VFDs |
• Compliance Standards: IEC 61131-2 (industrial control equipment), EN 61000-6-2 (EMC immunity), UL 508 (industrial safety), CE, RoHS, IEC 61508 (SIL 2 capable for safety-related applications)

2. Key Features

• AC800M PROFIBUS DP Exclusivity: Custom-engineered as a PROFIBUS DP slave for ABB AC800M PLCs—seamlessly integrates with the AC800M distributed I/O architecture; automatic module detection via Control Builder M software eliminates manual register mapping, reducing configuration time by 50%.
• 8-Channel Flexible Input: 8 independent channels support mixed current/voltage signals (configurable per channel)—adapts to diverse sensor types (e.g., 4~20mA pressure transmitters, 0~10V level sensors) in a single module, reducing the need for multiple discrete I/O modules.
• High Measurement Precision: ±0.1% FS accuracy for current signals and ±0.15% FS for voltage signals ensures reliable monitoring of critical process variables (e.g., reactor temperature, pipeline pressure)—avoids process deviations caused by signal errors (e.g., ±0.02mA error for a 10kPa pressure transmitter translates to ±0.05kPa pressure error).
• Distributed Architecture Advantage: Enables remote signal acquisition (up to 1000m from AC800M master via PROFIBUS DP)—reduces expensive analog signal cable runs in large plants (e.g., oil refineries, power stations), cutting wiring costs by 60% compared to centralized I/O.
• Comprehensive Diagnostics: Real-time monitoring of channel status (open circuit, overrange) and bus communication via LEDs and AC800M DCS—enables predictive maintenance (e.g., alerts for aging sensors) and reduces troubleshooting time by 40% (no need for on-site signal testing).
• Robust Isolation & Anti-Interference: 2kVrms isolation between inputs and bus/power, plus configurable low-pass filters, suppresses EMI from nearby motors, VFDs, or high-voltage cables—ensures stable signal acquisition in electrically harsh environments (e.g., steel mills, chemical plants).
• SIL 2 Compliance: Meets IEC 61508 SIL 2 requirements, making it suitable for safety-related system segments (e.g., emergency shutdown auxiliary circuits)—ensures low dangerous failure rates (<100 FIT) for risk mitigation.

3. Application Fields

• AC800M Distributed Process Control: Primary application—analog signal acquisition for AC800M-based systems:
  • Chemical Plants: Acquires 4~20mA signals from pH transmitters (reactor pH) and pressure transmitters (tank pressure) in distributed reactor zones; 1000m PROFIBUS DP range covers large plant layouts, while isolation prevents ground loops from chemical dosing pumps.
  • Oil Refineries: Collects ±10V signals from level transmitters (crude oil storage tanks) and 4~20mA signals from flow meters (product pipelines); anti-interference design resists EMI from refinery compressors, ensuring accurate flow measurement for custody transfer.
• Power Generation Auxiliary Systems: Monitors auxiliary equipment in power plants:
  • Thermal Power Plants: Acquires 4~20mA signals from temperature transmitters (boiler feedwater temperature) and pressure transmitters (turbine lubricating oil pressure) in remote boiler rooms; distributed installation avoids high-temperature damage to centralized I/O.
  • Solar PV Plants: Collects 0~10V signals from irradiance sensors and 4~20mA signals from inverter output current sensors; low power consumption (≤150mA) integrates with solar plant DC power systems, reducing energy waste.
• Water & Wastewater Treatment: Supports remote sensor monitoring:
  • Municipal Water Treatment: Acquires 4~20mA signals from turbidity sensors (filter outlets) and level transmitters (clarifier tanks) in distributed treatment units; open-circuit detection alerts to broken sensor cables, preventing unmonitored filter clogging.
  • Industrial Wastewater: Collects 4~20mA signals from dissolved oxygen (DO) transmitters (aeration tanks) and pH transmitters (neutralization tanks); humidity tolerance (≤95% RH) withstands damp treatment plant environments.
• Pharmaceutical & Food Manufacturing: Ensures compliant signal acquisition:
  • Pharmaceutical Batch Processing: Acquires 4~20mA signals from temperature transmitters (bioreactors) and pressure transmitters (lyophilizers); precise accuracy (±0.1% FS) meets GMP requirements for batch traceability, while isolation prevents cross-contamination of electrical signals

The structure and details of the product：

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