3onedata Co., Ltd.
Make network communication more reliable
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1-port RS-232/485/422 To Fiber Optic Converter
MODEL277 is a high quality industrial-grade bi-directional externally powered RS-232 / RS-485 / RS-422 to fiber optic converter (fiber optic modem) enclosed in a heavy-duty steel housing. Besides the capability of long distance data transmission, fiber lines are inherently resistant to EMI/RFI and transient surges including lightning; therefore, they are ideal for data communications near heavy electrical equipment and other electrical or atmospheric interference conditions. The fiber optic converter can extend the RS232 / RS485 / RS422 signal distance to up to 12.4 miles (20 km) using fiber optic cable. The RS232, RS485, and RS422 can be connected in any configuration; for instance RS232 can be converted to RS485 or RS422 via fiber. The unit supports serial data rates up to 460kbps and features auto-sensing data turnaround and therefore requires no flow control or any software drivers, The converter has no DIP switches or jumpers making it Plug-and-Play. MODEL277 has a terminal block connector for easy installation and either ST type or SC type connectors for the fiber optic links which needs to be specified. The media converter is wall, panel, or DIN rail mountable.
Specification
| Fiber Port |
Number of interfaces: 1 Interface form: optional SC/ST/FC port Transmission distance: Multimode: 2km Single mode: 20/40/60/80/100/120Km
Transmission wavelength: Multimode: 1310nm Single mode: 1310nm or 1550nm
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| Serial Port |
Standards: EIA RS-232C, RS-485, RS-422 Number of interfaces: Support 1 RS-232, RS-485/422 or 3IN1 serial port RS-232 signals: OUT, IN, GND RS-485 signals: D+, D-, GND RS-422 signals: T+, T-, GND, R+, R- Baud rate: 300bps-115200bps MODEL277 interface form: RS-232/485/422 serial port, adopts 8-pin 5.08mm pitch terminal blocks MODEL277A interface form: RS-232 serial port, DB9 female MODEL277B interface form: RS-485/422 serial port, adopts 5-pin 5.08mm pitch terminal blocks Direction control: RS-485 direction adopts ADDC (Automatic Data Direction Control) technology Load capacity: RS-485/422 end supports 32 points polling environment (customizable 128 points) Transmission distance: RS-232, 15m; RS-485/422, 1200m RS-485 pull high/low resistor: 4.7kΩ
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LED Indicator
| Power supply indicator, fiber port data receiving and alarm indicator, fiber port data sending indicator |
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Power Requirement
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MODEL277 Input power supply: 12～48VDC Connection mode: 2-pin 5.08mm pitch terminal blocks
MODEL277A, MODEL277B three optional power supply solutions External power supply: 5VDC, adopts DC round head for connection, MODEL277B supports 2.0A overcurrent protection Built-in power supply: -48VDC, adopts 3-pin 5.08mm pitch terminal blocks; 220VAC, adopts 3-hole AC socket with switch
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| Environmental Limit |
MODEL277: Operating temperature: -40～75℃ Storage temperature: -40～75℃ Relative humidity: 5%~95% (no condensation)
MODEL277A, MODEL277B: Operating temperature: -10~60℃ Storage temperature: -40～85℃ Relative humidity: 5%～95% (no condensation)
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| Physical Characteristic |
Housing: IP30 protection grade, metal shell Installation: wall mounting or DIN-Rail mounting (DIN-Rail accessories should be purchased separately) MODEL277 dimension (W×H×D): 100mm×69mm×22mm
MODEL277A, MODEL277B dimension (W×H×D): External power supply: 94mm×70.6mm×26mm Built-in power supply: 173.2mm×115mm×30mm
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| Certification |
CE, FCC, RoHS
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| Warranty |
3 years
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Dimension(Unit:mm)
Ordering Information
| Available Models | Fiber Port | RS-232 | RS-485/422 | RS-232/485/422 | Power Supply Range |
| MODEL277 | 1 | - | - | 1 | 12～48VDC |
| MODEL277A | 1 | 1 | - | - | 5VDC/-48VDC/220VAC optional |
| MODEL277B | 1 | - | 1 | - |