General
Number of ports	2
Air humidity	5–95 %, nicht kondensierend
Overcurrent protection

The Moxa TCC-80I-DB9 is a compact serial signal converter that enables complete signal conversion between RS-232 and RS-422/485. It is specifically designed for industrial applications where space-saving and reliability are paramount. The device can operate without an external power supply, as it is powered via the RS-232 interface or an external power supply (5–12 VDC). The TCC-80I models additionally offer galvanic isolation at 2.5 kV, enhancing safe operation in noisy environments. Automatic baud rate and direction control (ADDC) for RS-485 reduces installation complexity, as no additional control lines or software configuration are required. An integrated LED indicator allows for visual verification of port power.

Applications
This converter is suitable for industrial communication applications requiring a connection between RS-232 and RS-422/485 devices. Typical use cases include integrating legacy devices into modern networks, communication with sensors, controls, or machines in production environments, and systems with limited space. Its robust construction and EMC certifications (EN 55032/35, CISPR 32, FCC Part 15B Class A) also make it suitable for environments with electromagnetic interference.

Functions and Features in Detail
The TCC-80I-DB9 supports the standards RS-232, RS-422, and RS-485 in both 2-wire and 4-wire variants. The data rate ranges from 300 bps to 115.2 kbps. Signals are connected via a DB9 connector (male), supporting TxD, RxD, GND (RS-232), Tx+, Tx-, Rx+, Rx-, GND (RS-422), Data+, Data-, GND (RS-485, 2-wire), and Tx+, Tx-, Rx+, Rx-, GND (RS-485, 4-wire). Data direction control is automatic (ADDC), enabling communication without manual settings. Built-in termination resistors (120 Ohm) are switchable, with a 120 kOhm variant also available to ensure signal integrity over longer cables.

Technology Explained Simply
The galvanic isolation at 2.5 kV protects the device and connected equipment from voltage spikes and potential differences commonly found in industrial environments. Power supply is either via the RS-232 port (Power over RS-232) or an external power supply ranging from 5 to 12 VDC. The power consumption is 20 mA for the TCC-80I model. An integrated overcurrent protection safeguards the device against damage from excessive current draw. The LED indicator signals the port’s operational status, aiding in troubleshooting.

Compatibility and Accessories
The converter is compatible with devices using RS-232, RS-422, or RS-485 interfaces. Automatic baud rate detection and ADDC functionality simplify integration into existing systems. The device can be powered by an external power supply (5–12 VDC), and the delivery includes a USB power cable (50 cm). Interfaces are standardized, so no special adapters are required.

Mounting and Installation
The device is mounted as a desktop unit. The housing consists of a plastic cover and a metal base, with dimensions of 42 x 91 x 23.6 mm. The protection rating IP30 protects against finger contact and solid foreign objects, but not against water or dust. Mounting is tool-free, as no fastening elements are required. Installation is simple, as no software configuration or additional control lines are needed.

Operational Advantages
The TCC-80I-DB9 provides a reliable and maintenance-free communication solution. Galvanic isolation increases safety, while automatic direction and baud rate detection reduce installation time. The integrated LED indicator enables quick diagnosis. The high MTBF (2,781,161 hours according to Telcordia standard) demonstrates the device’s long lifespan and reliability. Operating temperature ranges from 0 to 60 °C, and storage temperature from -20 to 75 °C, making the device suitable for environments with varying temperatures. Humidity tolerance of 5–95 % (non-condensing) expands its application range.

Certifications
The device meets EMC requirements according to EN 55032/35, CISPR 32, and FCC Part 15B Class A. Immunity is certified according to IEC 61000-4-2/3/4/5/6/8. Safety complies with UL 60950-1, and vibration testing is performed according to IEC 60068-2-6, confirming suitability for industrial environments.

Delivery Contents
The delivery includes 1x TCC-80I-DB9 converter, 1x USB power cable (50 cm), 1x quick start guide, and 1x warranty card.