Moxa IMC-21GA-SX-SC Gigabit Multi-mode SC Industrial Media Converter

The Moxa IMC-21GA-SX-SC is a robust industrial Gigabit media converter designed to bridge the gap between copper Ethernet and fiber optic networks in demanding environments. This industrial-grade device offers extended temperature operation, shock and vibration resistance, and reliable data transmission critical for automation, transportation, and utility sectors. Key technical specifications include its 10/100/1000BaseT(X) to 1000BaseSX (SC) conversion capabilities, a wide operating temperature range of -40 to 75°C, and dual redundant 12/24/48 VDC power inputs with relay output for fault alarming. Its IP30 protection rating ensures resilience against dust ingress, making it suitable for challenging industrial deployments.

Core Features & Market Positioning

The IMC-21GA-SX-SC distinguishes itself through its industrial hardening, ensuring unwavering performance where commercial-grade converters would fail. Its Gigabit Ethernet capability provides superior bandwidth for high-demand applications, a significant advantage over older Fast Ethernet solutions. Moxa's reputation for reliability and a long product lifecycle positions this media converter as a strategic investment for mission-critical infrastructure. The SC connector type is a widely adopted standard, simplifying integration with existing fiber optic cabling. This device competes effectively by offering a reliable, purpose-built solution for industrial networks, prioritizing uptime and data integrity over lower-cost alternatives.

Key Application Scenarios

This industrial media converter is ideal for extending Ethernet networks across significant distances or in environments with high electromagnetic interference, common in manufacturing plants, substations, and intelligent transportation systems. Applications include connecting remote sensors, cameras, or control systems back to a central network via fiber optic backbone, enhancing network reliability and security. Its ability to withstand harsh conditions makes it a prime choice for outdoor enclosures and factory floor installations where temperature fluctuations and physical stress are prevalent. Furthermore, it's crucial for upgrading legacy copper-based networks to higher speeds without replacing all existing infrastructure.

Practical System Integration Guidance

Integrating the Moxa IMC-21GA-SX-SC is straightforward, leveraging its plug-and-play design. Installation involves connecting the 10/100/1000BaseT(X) copper cable to the RJ45 port and the 1000BaseSX fiber optic cable to the SC duplex connector. Ensure the fiber optic cable is multi-mode and rated for the appropriate distance, typically up to 550 meters for 1000BaseSX. Power is supplied via the terminal block, supporting dual redundant inputs for enhanced reliability; connect positive and negative terminals for each power source. For fault alarming, wire the relay output terminals to a monitoring system. No complex configuration or software setup is required for basic media conversion.

Operation and Risk Mitigation

The IMC-21GA-SX-SC operates autonomously as a media converter, requiring no software configuration. To ensure safe operation, adhere to the specified power input voltage range (12/24/48 VDC) and polarity. Avoid exposing the unit to corrosive environments or direct water ingress, despite its IP30 rating. Potential issues typically stem from incorrect cabling or power supply failures. If the device fails to power on, verify the power source and connections. If data transmission is interrupted, check both the copper and fiber connections, ensuring they are securely seated and the fiber optic cable is not damaged or excessively bent. Regular inspection of power supply stability and physical connections will mitigate most operational risks.

Scalability & Long-Term Value

The Moxa IMC-21GA-SX-SC offers excellent long-term value by enabling network expansion and future-proofing. Its Gigabit capacity supports the increasing bandwidth demands of modern industrial automation and the Industrial Internet of Things (IIoT). By converting between copper and fiber, it allows for seamless integration of new fiber optic runs into existing copper infrastructure without a complete overhaul. Compatibility with a wide range of industrial network protocols is inherent, as it operates at the physical layer. This media converter serves as a fundamental building block for scalable networks, allowing for the addition of more devices or longer network segments as operational needs grow, ensuring continued connectivity and data flow.

Frequently Asked Questions

Q1: What is the maximum transmission distance for the IMC-21GA-SX-SC over fiber?

The IMC-21GA-SX-SC utilizes 1000BaseSX technology, which is designed for multi-mode fiber.

Typically, this standard supports distances up to 550 meters (approximately 1804 feet) on multi-mode fiber optic cable.

Always ensure your multi-mode fiber installation meets the quality standards for optimal performance at this range.

Q2: Does the IMC-21GA-SX-SC require any software configuration?

No, this industrial media converter is a plug-and-play device.

It automatically detects the connected Ethernet speed (10/100/1000 Mbps) and performs the media conversion.

There is no need for any software installation or IP address configuration for its core function.

Q3: What are the power supply requirements for this Moxa converter?

The IMC-21GA-SX-SC supports dual redundant power inputs for enhanced reliability.

It accepts a wide DC voltage range, typically from 12 to 48 VDC, allowing flexibility with various power sources.

The unit also features a relay output for power failure alarm notification.

Q4: Can I use single-mode fiber with the IMC-21GA-SX-SC?

No, the IMC-21GA-SX-SC is specifically designed for multi-mode fiber optic connections (1000BaseSX).

Using single-mode fiber with this device will not work and could potentially damage the optical components.

Always match the fiber type (multi-mode) with the media converter's specifications for correct operation.

Q5: What does the "SX" in the product name refer to?

The "SX" designation in 1000BaseSX refers to a specific Gigabit Ethernet standard for short-wavelength laser transmission over multi-mode fiber.

This standard is optimized for shorter distances, typically up to 550 meters, compared to single-mode fiber standards.

It dictates the type of fiber and the optical characteristics required for successful data transmission.

Q6: How is the IMC-21GA-SX-SC protected against environmental factors?

This industrial media converter features an IP30 protection rating, safeguarding against solid objects larger than 2.5mm.

It is designed to operate reliably within a wide temperature range, commonly from -40°C to 75°C.

The unit also boasts high shock and vibration resistance, making it suitable for demanding industrial settings.

Q7: What type of connector does the fiber optic port use?

The Moxa IMC-21GA-SX-SC utilizes an SC duplex connector for its fiber optic interface.

The SC connector is a common and robust fiber optic connector widely used in industrial and telecommunications applications.

Ensure your fiber optic patch cords are terminated with SC connectors for a secure and reliable connection.

Q8: Can this device convert 100 Mbps to 1000 Mbps?

Yes, the IMC-21GA-SX-SC supports auto-negotiation for 10/100/1000 Mbps on its copper Ethernet port.

It can convert signals between 10/100 Mbps copper and 1000 Mbps fiber, or 1000 Mbps copper and 1000 Mbps fiber.

This provides flexibility for upgrading network segments gradually.

Q9: What is the purpose of the relay output on the IMC-21GA-SX-SC?

The relay output serves as a fault alarm contact.

It can be wired to a supervisory control and data acquisition (SCADA) system or an alarm panel to notify operators of critical events.

Common events that can trigger the relay include power failure or loss of link on one of the ports.

Q10: Is this media converter suitable for hazardous locations?

While the IMC-21GA-SX-SC is built for industrial environments, it is typically not rated for intrinsically safe or explosion-proof hazardous locations.

Always consult the product's official datasheet for specific certifications relevant to hazardous area classifications (e.g., ATEX, Class 1 Division 2).

For true hazardous location applications, specialized industrial equipment with appropriate certifications is required.