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Industrial Externally-Powered Opto-Isolated RS232 to RS485/RS422 Converter

Model: CVT-485_422-4

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The CVT-485_422-4 is a high-speed (300 to 115,200bps), optically-isolated, externally-powered RS232 to RS485 converter / RS232 to RS422 converter, which can be used to convert any standard RS232C port into a two-wire half-duplex RS485 port or a four-wire full-duplex RS485 / RS422 port and vice versa. This industrial externally-powered opto-isolated RS232 to RS485 / RS422 converter supports multi-drop RS485 / RS422 networks and can be used to communicate with one loop of up to 128 units of RS485 / RS422 devices. It operates within a temperature range of -40ºF to 185ºF (-40ºC to 85ºC), features 600W surge protection, 15kV ESD static protection and 2500V opto-isolation circuitry, which effectively protect your RS232 devices from ground loops, noise problems, transient surges, remote lightning and spikes. The unit is powered from an external 9 to 30VDC power supply, so you do not have to worry about the power ability of your RS232 device; it also supports data direction auto-turnaround, which automatically enables the RS485 transceiver when data is present on the RS232 side. Therefore, it requires no port power, software drivers, or DIP switch settings. The built-in 120-Ohm terminator can be turned ON or OFF through a simple jumper wire, thus making the unit an ideal solution for all types of installations. A separate external power supply is included in the package, and, thanks to the professional and unique casing design, the product can be mounted directly on a wall, panel or DIN Rail, without a need of using any unsecured DIN-Rail or wall-mount brackets.


Opto-Isolated RS232 to RS485/RS422 Converter data sheet

- High-speed industrial opto-isolated RS232 to RS485 / RS422 converter.
- Converts RS232 to 2-wire RS485, 4-wire RS485 or 4-wire RS422 and vice versa.
- External 9-30VDC powered (included), no port power from the RS232 port required.
- Industrial grade enclosed in a rugged, rustless ABS housing.
- 2500V optical isolation.
- Supports multi-drop RS485 / RS422 networks (up to 128 nodes).
- Direct DIN-Rail (Rack) or Wall / Panel mounting.
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting).
- RS-485 / RS-422 auto-detection, no manual setting is required.
- No software drivers, flow control, DIP switch or jumper settings required.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no flow control is required.
- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC).
- Built-in 600W surge protection, 15kV static protection and circuit protection.
- Built-in selectable 120Ω terminator for system reliability and easy installation.
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
- Safety: Strictly certified by TUV (Cert No. SG-CE-100005; SG-FCC-100002).
- 5-year manufacturer's warranty.

  • Model: CVT-485_422-4
  • Shipping Weight: 1.25lbs
  • Manufactured by: CommFront

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