ST fiber-optic line <> RS422/RS485 interface

Connect industrial interfaces over glass fiber optics

The model 61210 Interface transmits serial RS422 and RS485 data via multi-mode glass fiber optics over a distance of up to 3800 meters.

Interfaces:

• 1 x RS422/RS485
  • 9-pin Sub-D plug
• 1 x multi-mode fiber optic cable
  • ST connector

Management and connectivity:

• No re-configuration of transmission parameters required
• Transmission of two data channels
• Noise-immune transmission over a distance of up to 3800 meters
• Galvanic isolation up to nearly any value between the connected devices

Voltage supply:

• External
  • 12V-24V DC via plug-in screw terminal
  • Galvanically isolated power connection

Standards & more

• Conforms to standards both in office and industrial environments:
  • High noise resistance per EN 61000-6-2
  • Low noise emission per EN 55032:2015 + A1 Cl. B, EN 61000-3-2 & EN 61000-3-3
• 5 year guarantee

Connections and displays:

• Serial port:
  • RS422/RS485 port
  • 9-pin SUB-D adapter
• Glass fiber optics port:
  • ST plug adapter
• Operating modes:
  • RS422
  • RS485 4-wire with automatic control
  • RS485 2-wire with automatic control
• Switching time:
  • approx. 10µs for switching from data send to receive
  • for RS485 automatic control (can be changed on request)
• Baud rate:
  • 0..1.5Mbaud
• Data format:
  • any format
• Supported signals:
  • RxD, TxD
• Fiber-optic medium:
  • Multi-mode fibers 50/125μm, 62,5/125μm
• Wavelength:
  • 820nm
• Optical budget:
  • 50/125µm: typically 9.6dB, min. 4.2dB
  • 62.5/125µm: typically 13.4dB, min. 8.0dB
• Maximum distance:
  • 50/125µm: typically 3200m, min. 1400m @3dB/km
  • 62.5/125µm: typically 3800m, min. 2200m @3.5dB/km
• Galvanic isolation:
  • Isolation voltage min. 1kV DC between supply and serial connection
• Supply voltage:
  • 12..24V AC/DC
• Current consumption:
  • typ. 80mA @12V DC, 40mA @24V DC
• Supply connection:
  • Plug-in screw terminal, 5.08mm spacing
  • Labeled "L+" and "M"
• Displays:
  • 1x LED Data
  • 1x LED Power

Housing and other data:

• Housing:
  • Plastic housing for top hat rail installation
  • 105 x 22 x 75mm (L x W x H)
• Enclosure rating:
  • IP20
• Weight:
  • approx. 100g
• Ambient temperature:
  • Storage: -40..+70°C
  • Operating in non-rowed installation: 0..+60°C
  • Operating in rowed installation 0..+50°C
• Permissible relative humidity:
  • 5..95% RH (non-condensing)
• MTBF:
  • 716.382h @25°C per MIL-HDBK-217
• Life expectancy:
  • > 25 years at 25°C ambient temperature
• Scope of delivery:
  • ST fiber-optic line <> RS422/RS485 interface
  • Please order power supplies separately as accessories

Data transmission over long distances and in extremely noisy environments make the use of fiber optics the logical choice as a physical transmission medium.

The use of plastic fiber optics allows easy-to-install connections over relative short distances of up to 100 meters. But for distances above this limit the use of glass fiber optic cable is unavoidable.

While distances of up to 4km are easily accomplished with multimode fiber optics, greater distances are the domain of singlemode fiber optics.

It used to be that routing and assembling glass fiber optics created significant problems for the users, but today - thanks to the wider use of glass fiber technology in networking - many companies are offering this work as a service.

Declaration of Conformity