General
Supported interface standards	RS-232, RS-422, RS-485

The ICF-1150 from Moxa is an industrial-grade media converter that connects serial interfaces (RS-232/422/485) with a fiber optic connection. The device enables interference-resistant data transmission over long distances in demanding environments, particularly in areas with increased explosion risk. It is designed for use in factory automation, power engineering, and transportation technology, where reliability and high operational safety are required.

Applications
This converter is designed for industrial applications where galvanic isolation between serial devices and fiber optic cables is necessary. It is especially suitable for environments with strong electromagnetic interference, such as those found in production facilities, power supply networks, or rail transport. Certification for UL/cUL Class I Division 2 Groups A/B/C/D and ATEX Zone 2 allows use in explosive atmospheres.

Functions and Features in Detail
The ICF-1150 features two serial ports supporting RS-232, RS-422, and RS-485 standards. The baud rate can be set between 50 bps and 921.6 kbps, including non-standard transmission rates. For RS-485 interfaces, automatic data direction control (ADDC) is integrated, enabling communication without an additional control line. Galvanic isolation is rated at 2 kV, ensuring high resistance to interference and protection against voltage surges.

Technology Explained Simply
Serial signals are connected via a 5-pin terminal block, supporting signals TxD, RxD, GND (RS-232), Tx+/Tx–, Rx+/Rx–, GND (RS-422), as well as Tx+/Tx–, Rx+/Rx–, GND (RS-485 4-wire) or Data+/Data–, GND (RS-485 2-wire). The fiber optic side features an ST connector for multimode fiber, suitable for long-distance transmission. Power supply is provided via a terminal block with an input voltage of 12 to 48 VDC, with a maximum current consumption of 300 mA. An overcurrent protection is integrated to safeguard the device.

Compatibility and Accessories
The converter is designed for use with multimode fiber optic cables equipped with an ST connector. Configuration of the RS-485 interface allows selection of various Pull High/Low resistors (e.g., 150 kΩ, 10 kΩ, 4.7 kΩ, 3.3 kΩ, 1 kΩ, 909 Ω, 822 Ω, 770 Ω, 500 Ω, 485 Ω) and terminator resistors (N/A, 120 Ω, 120 kΩ) to adapt signal quality to specific applications.

Mounting and Installation
The device is mounted on a DIN rail and features a metallic housing with protection class IP30. Dimensions are 30.3 × 70 × 115 mm, and the weight is 330 g. Mounting is done by securing to the rail, with power supply and serial connections via terminal blocks.

Operational Advantages
The ICF-1150 features a wide operating temperature range of -40 to 85 °C, making it suitable for extreme environmental conditions. It also tolerates humidity levels from 5 to 95 % (non-condensing). Certifications include EN 55032/35, CISPR 32, FCC Part 15B Class A, IEC 61000-4-2 to -4-8, UL 61010-2-201, as well as environmental tests according to IEC 60068-2-1, -2, -3 and vibration tests according to IEC 60068-2-6, ensuring high operational safety. The MTBF is 792,085 hours according to Telcordia/Bellcore, indicating high longevity. The manufacturer’s warranty covers 5 years.