Hardware installation guide for the Moxa TCC-120 and TCC-120I RS-422/485 isolated repeaters, covering setup, wiring, specifications, and LED indicators.
The TCC-120 and TCC-120I are RS-422/485 isolated repeaters, and the TCC-120I comes with 2 kV isolation protection. The guide covers product features, package contents, specifications, product views, LED indicators, and installation steps.
Installation includes setting DIP switches, attaching a 12-48 VDC power supply, wiring the RS-422/485 terminal block, testing the connection, and choosing desktop, DIN-rail, or wall placement.
| Communication Signals (2-wire) | Data+, Data-, SGND |
|---|---|
| Communication Signals (4-wire) | Tx+, Tx-, Rx+, Rx-, SGND |
| Baudrate | 50 bps to 921.6 Kbps |
| Isolation | 2 kV for both Power and Signal (TCC-120I) |
| Operating Temperature | -20 to 60°C |
| Storage Temperature | -20 to 85°C |
| Humidity | 5 to 95 %RH |
| Power Input Voltage | External 12-48 VDC |
| Power Consumption (TCC-120) | 65mA @ 12V, 37mA @ 24V, 26mA @ 48V |
| Power Consumption (TCC-120I) | 180mA @ 12V, 90mA @ 24V, 52mA @ 48V |
| Dimensions | 67 x 100 x 22 mm (casing only); 90 x 100 x 22 mm (including ears) |
| Housing | Aluminum |
| Terminal Block Wire Gauge | #22 to #16 AWG |
| Weight | 148 ±5 g |
| Regulatory Approvals | CE, FCC (Class A), UL-60950-1 |
| Transmission Distance Extension | up to an additional 1.2 km |
The operating temperature range is -20 to 60°C.
It is powered by an external 12-48 VDC power supply.
Yes, the TCC-120I comes with 2 kV isolation protection.
Use a console terminal program such as HyperTerminal or Moxa Terminal Emulator.