Moxa TCC-120/120I user’s guide covering features, package checklist, specifications, DIP switch settings, wiring, and connection testing for the RS-422/485…
The Moxa TCC-120 and TCC-120I are RS-422/485 isolated repeaters used to extend the transmission distance between RS-422/485 devices; the TCC-120I adds 2 KV isolation protection. This user’s guide (Eighth Edition, August 2009) introduces the products, lists their features and specifications, and explains how to install and test them.
Installation is described in four steps: setting the terminator DIP switches, attaching the 12-48 VDC power supply, wiring the RS-422/485 terminal blocks for 2-wire or 4-wire operation, and testing the connection with a console terminal program such as HyperTerminal or Moxa Terminal Emulator. The guide also covers the built-in ADDC™ data direction control, isolation and reverse power protection, and DIP switch selectable termination.
| 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, terminal block |
| Power Consumption (TCC-120) | 3.4 W (12V x 286 mA; 24V x 143 mA; 30V x 113 mA) |
| Power Consumption (TCC-120I) | 3.68 W (12V x 390 mA; 24V x 195 mA; 30V x 156 mA) |
| Dimensions (W x D x H) | 67 x 100 x 22 mm (casing only); 90 x 100 x 22 mm including ears |
| Casing material | Aluminum |
| Weight | 148± 5 g |
| Terminal block wire range | #22 – #16 AWG |
| Regulatory Approvals | CE, FCC (Class B) |
| Extended transmission distance | up to an additional 1.2 km |
The TCC-120I comes with 2 KV isolation protection for both power and signal; the TCC-120 does not include this isolation rating.
It is powered by an external 12-48 VDC power supply connected to the V+ and V- terminals on the 3-contact terminal block.
Set Switch 2 (SW2) to the ON position to enable termination and to the OFF position to disable it.
Set Switch 1 (SW1) to ON for 4-wire mode and to OFF for 2-wire mode; both sets of DIP switches must be configured the same.