RS-485/422 Dual Redundant Ring Fiber Optic Modem

RS-485/422 Fiber Optic Converter with Redundant Ring

One Channel Multi Protocol Bi-Directional Data


The RS485/422 Redundant Ring Multi-Drop Self-Healing Ring Transmission series products provide an optical self-healing ring network for RS232, RS422 /RS485 data interfaces over two multimode or singlemode optical fibers. The system offers maximum reliability as it can recover simultaneous faults or failures in two different locations and has contact closure outputs on each module to clearly indicate any fault location. The self-healing ring consists of two opposing data paths, ring A and ring B. Under normal operation only the primary path (ring A) is used for data transfer. If a fault is detected, the data is transferred to the secondary path (ring B) without interruption to the communications network.
The series is available in wall mount, DIN rail or 3U chassis card. Redundant Dual power supply for Option

Product Features

  • Supports RS232, RS422 and RS485
  • Multimode and single mode solutions
  • Contact closure alarm outputs per station
  • Single or dual fibre configurations
  • Wall mount, DIN rail and 3U chassis card


Typical System Configuration

Data

Data Formats

RS232,RS422,RS485

RS232 Data Rate

115.2kbps

RS422 / 485   Data Rate

512 kbps  or 1Mkbps

Bit Error Rate

<1 x 10-12

Connectors

Data

Screw Block Terminal

Fiber

ST, SC or FC (ST fitted as standard)

Environmental

Operating   Temperature

- 3 0 C--- +70 C

Storage Temperature

- 40 C--- +85C

Operating   Humidity

0- 95%

MTBF

>100,000 Hours

Optical

Fiber

Multimode or singlemode

Wavelength

MM: 850nm, SM: 1310nm

Number of fibers

4 or 2

Power

Power Input

AC   220V  110v or  DC+110V   +5V   +12V   +24V   +48V Option

Mechanical

Dimensions

125(L)×110(W)×36(H )Wall Mount & DIN Rail

Model Selection:

Model Number

Description

Fiber No.

Fiber Mode

Fiber Connector

HFB-FO-485-R4M

Redundant Ring Link,4 Fiber, 2km

4

Multi Mode

ST/SC/FC

HFB-FO-485-R4S

Redundant Ring,4 Fiber, 20km

4

Single Mode

ST/SC/FC