ABB OCAHG 492838402

Description

Detailed parameter table

ABB OCAHG 492838402

Product introduction

The ABB OCAHG 492838402 is a high-performance industrial fiber optic transceiver module designed to enable reliable, high-speed data transmission in demanding industrial environments. As a key component in ABB’s industrial communication portfolio, this SFP (Small Form-Factor Pluggable) module facilitates seamless connectivity between Ethernet-based devices, such as PLCs, DCS systems, and industrial switches, over long-distance fiber optic networks.

Optimized for single-mode fiber, the ABB OCAHG 492838402 supports Gigabit Ethernet (1000 Mbps) data rates, ensuring fast and efficient transfer of critical process data. Its dual-wavelength design (1310 nm transmit, 1550 nm receive) minimizes signal loss, enabling transmission distances of up to 10 km—ideal for connecting remote plant areas or distributed control systems.

Built to withstand the harsh conditions of industrial settings, the module operates reliably in temperatures ranging from -40°C to 85°C, resisting vibration, electromagnetic interference (EMI), and voltage transients. Its compact SFP form factor allows for easy integration into ABB’s industrial switches and communication devices, providing flexibility in network design. Whether deployed in power plants, manufacturing facilities, or oil refineries, the ABB OCAHG 492838402 delivers consistent performance, ensuring uninterrupted data flow for critical automation systems.

Core advantages and technical highlights

High-speed, long-distance transmission

The ABB OCAHG 492838402 supports Gigabit Ethernet (1000 Mbps) data rates, enabling the transfer of large volumes of process data—such as high-resolution sensor readings or video surveillance feeds—without latency. Its single-mode fiber optimization and dual-wavelength design (1310 nm/1550 nm) minimize attenuation, allowing reliable communication over distances up to 10 km. This capability is particularly valuable in large industrial complexes, where control rooms may be located far from production areas, or in distributed systems like pipeline monitoring networks.

Industrial-grade ruggedness

Engineered to operate in -40°C to 85°C, the module thrives in extreme temperature environments, from frozen oil fields to hot steel mills. Its robust construction resists vibration (10-2000 Hz, 15 g peak) and shock, ensuring stable performance in mobile applications (e.g., mining equipment) or near heavy machinery. Unlike commercial transceivers, it is immune to EMI from motors, variable frequency drives, and other industrial equipment, eliminating data corruption caused by electrical noise.

Digital diagnostic monitoring (DDM)

The ABB OCAHG 492838402 features DDM functionality, which provides real-time data on key operating parameters, including transceiver temperature, supply voltage, laser bias current, and received optical power. This allows network administrators to proactively monitor module health, predict failures, and troubleshoot issues remotely—reducing downtime in critical systems. For example, a drop in received power can alert operators to a damaged fiber cable before it causes a communication outage.

Seamless integration with ABB systems

Designed for compatibility with ABB’s industrial switches (e.g., ABB MD800 series) and control systems (e.g., 800xA DCS), the module ensures plug-and-play functionality and optimized performance in ABB ecosystems. Its SFP form factor allows hot-swapping, enabling replacement without powering down the host device—critical for maintaining uptime in mission-critical networks.

Laser safety compliance

Certified to IEC 60825-1, the ABB OCAHG 492838402 meets strict laser safety standards, classifying it as a Class 1 laser product (safe under all conditions of normal use). This eliminates the need for special safety protocols during installation and maintenance, simplifying deployment in industrial environments with strict safety regulations.

Typical application scenarios

Power generation facilities

In a coal-fired power plant, the ABB OCAHG 492838402 connects the main control room’s DCS to remote I/O cabinets located near the boiler and turbine systems. Its 10 km transmission range bridges the physical distance between these areas, while Gigabit speeds ensure real-time transfer of temperature, pressure, and vibration data. The module’s EMI immunity prevents interference from high-voltage equipment, ensuring reliable communication for critical control loops.

Oil and gas pipelines

For pipeline monitoring systems, the module links remote flow meters, pressure sensors, and valve controllers to a central SCADA system. Deployed in rugged enclosures along the pipeline route, it operates in extreme temperatures (-40°C in winter) and resists vibration from passing vehicles. DDM diagnostics allow operators to monitor optical signal strength, detecting fiber damage caused by construction or environmental factors before data loss occurs.

Automotive manufacturing plants

In a large automotive factory, the ABB OCAHG 492838402 integrates robotic cells, conveyor systems, and quality control stations into a unified Ethernet network. Its high-speed transmission ensures synchronized communication between robots and PLCs, while the 10 km range connects distant production halls. The module’s resistance to EMI from welding equipment and motor drives prevents data errors in precision assembly processes.

Water treatment plants

The module connects distributed water treatment units (e.g., filtration, disinfection) to a central control system, enabling remote monitoring and control. Its long-distance capability links facilities spread across large campuses, while industrial-grade reliability ensures uninterrupted operation in humid, corrosive environments. DDM alerts notify operators of potential issues, such as failing lasers, allowing preventive maintenance.

ABB OCAHG 492838402

Related model recommendations

ABB OCAHG 492838403: A multi-mode fiber variant supporting 550 m transmission, suitable for short-distance plant floor networks.

ABB MD800-48GT4X: An industrial Ethernet switch compatible with the ABB OCAHG 492838402, offering 48 Gigabit ports and 4 SFP slots for fiber connectivity.

ABB CI854A 3BSE022469R1: A PROFINET interface module that, when paired with the transceiver, extends ABB PLC connectivity over fiber networks.

ABB 800xA Communication Module: Integrates the ABB OCAHG 492838402 into the 800xA DCS, enabling fiber-based communication with remote I/O.

ABB Fiber Optic Cable 3HAC049999-001: Single-mode, armored fiber cable optimized for use with the ABB OCAHG 492838402 in harsh environments.

ABB SFP Cage Adapter 3ASC25H707: Allows installation of the ABB OCAHG 492838402 in legacy equipment with non-SFP interfaces.

Installation, commissioning and maintenance instructions

Installation preparation

Verify the host device (e.g., switch, PLC) supports SFP modules and is compatible with Gigabit Ethernet over single-mode fiber.

Inspect the fiber optic cable for damage (e.g., kinks, cuts) and ensure it is rated for single-mode use with LC connectors. Clean fiber ends with a lint-free wipe and alcohol to remove dust or oil.

Prepare tools: ESD-safe wristband, fiber optic power meter, and SFP extraction tool. Work in an ESD-protected area to prevent damage to the module’s sensitive components.

Check the operating voltage of the host device’s SFP slot (must provide 3.3 V DC ±5%).

Installation steps

Power off the host device or ensure the SFP slot is powered down. Put on the ESD wristband and connect it to a grounded surface.

Remove the ABB OCAHG 492838402 from its anti-static packaging. Align the module with the SFP slot, ensuring the connector pins match the slot orientation.

Insert the module into the slot until it clicks into place. Do not force insertion—misalignment may damage pins.

Connect the LC fiber connectors to the module’s ports: transmit (TX) to the remote receiver, receive (RX) to the remote transmitter. Secure connectors with locking clips if present.

Power on the host device. Verify the module’s status LED illuminates green (indicating normal operation). A red LED indicates a fault (e.g., no fiber connection, incompatible speed).

Commissioning steps

Use the host device’s management software (e.g., ABB Network Manager) to confirm the module is recognized and operating at 1000 Mbps.

Test data transmission by sending a test file between devices connected via the fiber link. Verify no packet loss occurs (use tools like ping or iperf).

Check DDM parameters via the management software, ensuring:

Transceiver temperature <85°C

Supply voltage 3.135-3.465 V

Received optical power within -3 dBm to -15 dBm (typical range)

For long-distance links (>5 km), use a fiber optic power meter to measure signal strength at both ends, ensuring it meets the module’s specifications.

Simulate a fault (e.g., disconnect a fiber) and confirm the host device generates an alarm, verifying DDM functionality.

Maintenance suggestions

Inspect the ABB OCAHG 492838402 quarterly for dust accumulation on the connector ports; clean with compressed air (low pressure) if needed. Avoid touching the optical surfaces.

Monitor DDM data monthly via the host device’s software, tracking trends in temperature, voltage, and optical power. A gradual increase in temperature may indicate poor ventilation in the host device.

Clean fiber connectors semi-annually using lint-free wipes and alcohol to prevent signal degradation. Inspect connectors under a microscope for scratches or contamination.

Test data integrity annually by running a full network diagnostic, checking for packet loss or latency spikes. Replace the module if errors persist despite clean fibers and proper alignment.

Store spare modules in anti-static packaging at -55°C to 125°C, avoiding exposure to moisture or direct sunlight. When replacing a module, use the extraction tool to prevent damage to the host device’s slot.

Service and guarantee commitment

The ABB OCAHG 492838402 comes with a 5-year warranty from the date of installation, covering manufacturing defects and ensuring compliance with published performance specifications (data rate, transmission distance, operating temperature range). ABB guarantees that any module failing to meet these standards during the warranty period will be replaced within 48 hours for critical applications, minimizing network downtime.

Technical support includes 24/7 access to ABB’s global team of communication specialists, who provide assistance with installation, troubleshooting, and network optimization. Online resources include detailed datasheets, compatibility guides, and DDM interpretation manuals. Customers can opt for extended service contracts offering annual preventive maintenance, on-site testing, and priority replacement, ensuring the ABB OCAHG 492838402 delivers reliable fiber optic communication throughout its 10-year design lifespan.