The ICF-1170I-M-ST-T from Moxa is an industrial-grade media converter that establishes a bidirectional connection between a CANbus network and a fiber optic link. It serves as a bridge between industrial control systems communicating via CAN and networks wired with multimode fiber optic cable. This enables the transmission of CAN data over long distances, while electromagnetic interference is minimized through galvanic isolation. The converter is designed for use in demanding industrial environments where high mechanical stress, extreme temperatures, and electromagnetic influences may occur.

Applications
This converter is suitable for applications in industrial automation, such as in manufacturing, power supply, or rail transport, where CAN-based control systems need to be connected to fiber optic networks. The ability to transmit CAN data over fiber optic cable is particularly advantageous when cabling over long distances is required or when the environment is heavily affected by electromagnetic interference. Its robust construction and wide operating temperature range also make it suitable for outdoor applications, for example in process industries or mobile installations.

Features and Equipment in Detail
The ICF-1170I-M-ST-T features a CAN interface with one port, supporting signals CAN_L, CAN_H, and CAN Signal GND. Galvanic isolation of 2 kV protects communication from voltage spikes and disturbances. Termination can be set to 120 Ohm via a DIP switch, which is required for most CAN networks. On the optical side, the converter provides a 100BaseFX interface with multimode ST connector, designed for connection to fiber optic cables. The use of multimode fiber optic cable enables efficient data transmission over medium to long distances in industrial facilities.

Technology Explained Simply
The 2 kV galvanic isolation ensures that electrical disturbances occurring on the CAN side are not transferred to the fiber optic side, thereby enhancing signal integrity. The redundant power supply with two DC inputs ensures continuous operational reliability, even if one power supply path fails. Power supply is via a terminal block and supports a voltage range of 12 to 48 VDC. Power consumption is 221 mA. The robust metal housing construction with protection rating IP30 protects against mechanical impacts and offers some protection against dust, although not against water or splashing water. The operating temperature range of -40 to 85 °C allows use in extreme environments, such as cold storage rooms or hot production halls.

Compatibility and Accessories
The converter is compatible with CAN networks using standard signals CAN_L and CAN_H. The optical interface is designed for multimode fiber optic cables with ST connector. Additional adapters or converters are required for connection to other fiber optic topologies or types. The use of multimode fiber optic cable does not require special light sources, as transmission occurs in the visible to near-infrared range. Configuration is done via a DIP switch, which allows setting the termination.

Mounting and Installation
The converter is mounted on a DIN rail, enabling simple and standardized installation in enclosures. Mounting is done using integrated fastening elements that clamp directly onto the rail. Power supply is via a terminal block connected to the appropriate voltage sources. The optical connection is made via the ST connector, which is directly inserted into the fiber optic cable. The CAN connection is made via the respective signal lines connected to the designated terminals.

Operational Advantages
Operation of the ICF-1170I-M-ST-T is characterized by high reliability and operational safety. The redundant power supply and galvanic isolation increase fault tolerance. The wide operating temperature range and robust construction enable use in demanding environments. Mounting on the DIN rail simplifies integration into existing enclosures. The 5-year manufacturer’s warranty underscores the quality and longevity of the device. The MTBF is 792,085 hours, indicating high operational reliability. Compliance with standards such as EN 55032/35, CISPR 32, FCC Part 15B Class A, IEC 61000-4-2 to -4-8, EN 62368-1, and UL 508 ensures conformity with international standards for EMC, safety, and environmental resistance.