General
Number of serial ports	2
RS-485 pull-up/pull-down resistors	150 kΩ, 10 kΩ, 4.7 kΩ, 3.3 kΩ, 1 kΩ, 909 Ω, 822 Ω, 770 Ω, 500 Ω, 485 Ω
MTBF	792.085 Stunden (nach Telcordia GB)

The ICF-1150I-S-SC from Moxa is an industrial media converter that converts serial RS-232/422/485 signals into multimode fiber optic signals. The device enables secure and interference-free data transmission in industrial environments, particularly where electromagnetic interference must be avoided and long distances must be bridged. The converter is designed for use in automation systems, such as in manufacturing industry or machine building, where reliable communication between controllers and peripheral devices is required.

Applications

The ICF-1150I-S-SC is used in industrial applications where galvanic isolation between serial interfaces and fiber optic cables is necessary. This protects sensitive devices from voltage spikes and disturbances. Converting serial signals to fiber optic enables transmission over long distances without signal loss, allowing efficient cabling in large production halls or across multiple buildings. The robust construction and operating temperature range of 0 to 60 °C make the device suitable for demanding environments.

Functions and Equipment in Detail

The device features two serial ports supporting RS-232, RS-422, and RS-485 (in 2- and 4-wire variants) standards. The baud rate can be set between 50 bps and 921.6 kbps, including non-standard transmission rates. The serial interface is via a 5-pin terminal block, while the fiber optic side connects via an SC connector with multimode fiber. An integrated galvanic isolation of 2 kV protects connected devices from electrical disturbances.

For RS-485 applications, the converter offers automatic data direction control (ADDC), enabling communication without additional control lines. The configuration of pull-up and pull-down resistors, as well as termination resistors, can be adapted to the specific application. Available resistance values include 150 kΩ, 10 kΩ, 4.7 kΩ, 3.3 kΩ, 1 kΩ, 909 Ω, 822 Ω, 770 Ω, 500 Ω, and 485 Ω, with termination options of 120 Ω, 120 kΩ, or no termination (N/A).

Technology Explained Simply

The conversion of serial signals to fiber optic is achieved via an optical transmitter and receiver within the device. Serial data is converted into light pulses and transmitted over the multimode fiber cable. On the receiving end, the light signal is converted back into electrical signals. Galvanic isolation separates the electrical potentials between connected devices, protecting against voltage spikes and disturbances. Automatic data direction control (ADDC) automatically detects data direction in RS-485 connections, eliminating the need for an additional control line.

Compatibility and Accessories

The ICF-1150I-S-SC is compatible with standard industrial communication protocols and can be integrated into existing RS-232/422/485 networks. The use of multimode fiber with SC connector enables connection to other fiber optic cables and components supporting this standard. The device can be combined with other media converters, such as modems or industrial switches, to create a flexible network architecture.

Mounting and Installation

The device is mounted on a DIN rail, enabling simple and standardized installation in enclosures. Power supply is via a terminal block with an input voltage of 12 to 48 VDC. Power consumption is up to 300 mA. The housing is made of metal and offers IP30 protection, safeguarding against access to moving parts and larger solid objects. Dimensions are 30.3 × 70 × 115 mm, and weight is 330 g.

Operational Advantages

The ICF-1150I-S-SC offers high reliability due to integrated galvanic isolation and robust construction. Support for many baud rates and configuration options for RS-485 applications increases flexibility. Automatic data direction control reduces installation complexity. Certifications according to EN 55032/35, CISPR 32, FCC Part 15B Class A, and IEC 61000-4-2 to -4-8 ensure high EMC and immunity. Safety certification UL 61010-2-201 and explosion protection approval UL/cUL Class I Division 2, ATEX Zone 2 allow use in hazardous areas. The MTBF is 792,085 hours according to Telcordia GB, indicating high service life. Warranty is 5 years.

Protection Rating, Operating Voltage, Technology, Standards

The device complies with IP30 protection, meaning protection against access to moving parts and larger solid objects. The operating voltage is between 12 and 48 VDC. The technology is based on converting serial signals to multimode fiber with SC connector. Standards include EMC/EMI (EN 55032/35, CISPR 32, FCC Part 15B Class A), EMS (IEC 61000-4-2 to -4-8), Safety (UL 61010-2-201), and Explosion Protection (UL/cUL Class I Division 2, ATEX Zone 2).