ABB TB840A 3BSE037760R1 Fiber optic interface module

Specific Parameters

Electrical Parameters
Input Voltage: 24V DC
Typical Power Consumption Current: 120mA
Communication Interfaces: 2 fiber optic interfaces (Optical ModuleBus), 1 electrical ModuleBus interface
Transmission Rate: 10 Mbps (complying with PROFIBUS-DP standard)
Supported Protocols: Modbus, PROFIBUS-DP
Power Output: Provides isolated 24V DC protected power supply and isolated 5V DC power supply for I/O modules
Isolation Level: Electrical isolation between power supply and communication circuit, isolation voltage 500V AC (1 minute)
Protection Functions: Built-in short-circuit protection and overcurrent protection circuits
Environmental Parameters
Operating Temperature: -25°C to 55°C (non-condensing)
Storage Temperature: -40°C to 85°C
Relative Humidity: 5% to 95% (non-condensing)
EMC Immunity: Complies with EN 61326-1 industrial standard, fiber optic communication resists EMC interference
Pollution Degree: Degree 2 (IEC 60664-1)
Corrosion Protection: ISA-S 71.04 Grade G3
Protection Class: IP20 (module itself, dependent on rack protection)
Certification Standards: CE, UL, ATEX
Mechanical Parameters
Dimensions: 54mm (W) × 119mm (H) × 96mm (D) (fits S800 I/O standard rack slots)
Weight: Approximately 0.2kg
Mounting Method: Plug-in installation in S800 I/O rack, supporting hot-swapping
Housing Material: Flame-retardant reinforced plastic (UL 94 V-0 grade)
Indicators: Power Status (PWR, green), Communication Status (COM, yellow), Fault Alarm (ERR, red), Address Indication (ADDR, multi-color)

Product Performance

Supports 1+1 redundant configuration, with dual-link backup of fiber optic and electrical ModuleBus. It automatically switches when a single point of failure occurs, with switching time ≤10ms, ensuring communication continuity. Adopting fiber optic communication technology, the data transmission rate reaches 10 Mbps, effectively resisting electromagnetic interference in industrial environments, and the transmission distance is more than 10 times that of copper cables.

Provides isolated protected power supply for I/O module clusters, real-time monitoring power voltage and load current. It immediately triggers protection and uploads alarm information when abnormal, with power diagnosis coverage 100%. Supports hot-swapping; module replacement does not require shutdown, and communication is automatically restored through the rack backplane bus, adapting to 24/7 continuous production scenarios.

Modular design enables flexible expansion of cluster scale, connecting up to 7 fiber optic clusters and 12 I/O modules. It is compatible with controllers such as CI810 and CI830, and parameter configuration can be completed through Control Builder M configuration software without additional drivers. The Mean Time Between Failures (MTBF) is ≥800,000 hours, complying with industrial-grade long-life operation standards.

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