COMMFRONT Industrial Isolated RS232 to RS485 / RS422 High-Speed Converter 2500V Optical Isolation 600W Surge and 15kV ESD Static Protection DIN-Rail/Wall/Panel Mount

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COMMFRONT Industrial Isolated RS232 to RS485 / RS422 High-Speed Converter 2500V Optical Isolation 600W Surge and 15kV ESD Static Protection DIN-Rail/Wall/Panel Mount

Regular Price: US$179.99

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isolated rs232 to rs485 rs422 connections diagram

Isolated RS232 to RS485 / RS422 High-Speed Converter

Model: CVT-485_422-4

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.

Features

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
2500V optical isolation
Supports multi-drop RS485 / RS422 networks (up to 128 nodes)
300 to 115.2K Baud operation (auto-sensing & self-adjusting)
Built-in 600W surge protection, 15kV static protection and circuit protection
Built-in selectable 120O terminator for system reliability and easy installation
Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC)

WHY OPTICAL ISOLATION?


Ground Loops Ground loop currents can flow through “the path of least resistance” via either the common earth ground or the ground wire and cause serious damages to the connected devices. Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the grounds and the data lines, thus removing the ground loop problems.	Remote Lightning Serial networks are often exposed to remote lightning because of the long distances and the surrounding electrical equipment. Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the connected devices, thus effectively preventing remote lightning, voltage surges, and sparks from destroying other parts of the system.	Voltage Surges Because of the long distances and the surrounding electrical devices, voltage surges can run across the system and cause damages to the valuable equipment. Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the connected devices, thus effectively preventing remote lightning, voltage surges, and sparks from destroying other parts of the system.	Electric Sparks Electric sparks can cause transient voltage to run across the system and cause serious damages to the valuable equipment. Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the connected devices, thus effectively preventing remote lightning, voltage surges, and sparks from destroying other parts of the system.

SPECIFICATIONS

Part Number:	CVT-485_422-4
Compatibility:	EIA/TIA RS-232, RS-485 and RS-422 standards
Power Source:	9 to 30VDC (External AC to DC power adapter included)
Current Consumption:	Less than 30mA
Optical Isolation:	2500Vrms (AC, 1 min)
Baud Rates:	300 to 115,200bps (auto-sensing & self-adjusting)
Distances:	RS-232: 16ft (5m); RS-485/RS-422: up to 4000ft (1.2km) at 19,200bps
Maximum No. of Nodes:	RS-485 / RS-422: 128 nodes
Connectors:	1x DB-9 Female; 1x 10-way Terminal Block
End of Line Terminator:	120O (built-in, selectable)
Surge protection:	600W
Static protection (ESD):	Up to 15KV
Dimensions (H x W x D):	4.7 x 3.6 x 0.9 in (120 x 73 x 33 mm)
Weight:	4.6 oz (130 g) (with terminal block)
Operating Temperature:	-40ºF to 185ºF (-40ºC to 85ºC)
Operating Humidity:	Up to 90% RH (non condensation)


	Slim RS232 to RS485	RS232 to RS485	Isolated RS232 to RS485	Isolated RS232 to RS485/RS422	Isolated RS485 to RS422
Model	CVT-485A-1	CVT-485-1	CVT-485-3	CVT-485_422-4	RPT-485_422-4
Power Source	Port Power	Port Power	Port Power	9 to 30VDC	9 to 30VDC
Optical Isolation	NIL	NIL	2500Vrms (AC, 1 min)	2500Vrms (AC, 1 min)	2500Vrms (AC, 1 min)
Baud Rates	300 to 115.2K bps	300 to 115.2K bps	1.2K to 57.6K bps	300 to 115.2K bps	300 to 115.2K bps
Installation	In Line	In Line	In Line	DIN-Rail OR Wall/Panel Mount	DIN-Rail OR Wall/Panel Mount

Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC), built-in 600W surge protection, 15kV static protection and circuit protection. 300 to 115.2K Baud operation (auto-sensing & self-adjusting), built-in selectable 120O terminator. 2500V optical isolation, supports multi-drop RS485 / RS422 networks (up to 128 nodes). Converts RS232 to 2-wire RS485, 4-wire RS485 or 4-wire RS422 and vice versa. High-speed rugged industrial-grade opto-isolated RS232 to RS485 / RS422 converter.