Robust DataComm rdc485fos-dv-2p-st Converter 规格指南

Making Industrial Data Flow Like Water ... Safely, Silently, & Sanely

Robust DataComm Pte Ltd (USA) 26471 Portola Pkwy #1E-242, Foothill Ranch CA 92610-1743, +1,972-248-7466 (International) 
18 Kaki Bukit Road 3 #02-08 Entrepreneur Business Centre Singapore 415978, +65,6487-5624

The rdc485fos safely and easily connects your 
panel mounted RS-422/485 devices to fiber optic 
cables up to 11 km long, providing the ultimate in 
isolation, surge, and noise protection.  Even the 
RS-422/485 port is galvanically isolated from the 
DC supply ground.  ST connector, plus the quality 
Hewlett Packard components used are 
guaranteed to work with 9/125 µm fiber sizes.

Isolation, industrial design, small size, DIN rail 
mount, user indication, and wide range DC 
supply make the rdc485fos a very engineer- 
friendly device for your industrial data 
communication system.

Model: rdc485fos

Dimensions in mm (and inches)

25 (1.0)

79 (3.1)

85.5 (

3

.4)

90.5 (

3

.6)

93.0 (

3

.7)

EN 50 022 - 7.5mm
EN 50 035
EN 50 022 - 15mm

98 (3.9)

Specification

Signal Type

Voltage Level

Permitted Surge

Power Supply to 

Fiber/RS-485

Order Information

rdc485fos

-

-

-

5v

5v +/- 5% Regulated DC Supply

9 to 36v Unregulated DC Supply

dv

hv

38 to 58v Unregulated DC Supply

non-isolated, RS-485 SGnd = supply V-

2.5Kv isolation between RS-485 & supply

1p

2p

ST bayonet connector (® of AT&T)

st

-

c

d

5-way Screw Connector

9 Pin D-shell Connector

9 to 36 vDC

5v DC +/- 5%

38 to 58 vDC

User Indications

Max Speed

Character Setting

User Indications

Practical Distance

: at least 115Kbps at standard distances
: transparent, no configuration required
: Txd and Rxd have LED (yellow) indications
: less than 3000m for RS-485, 13 km for fiber
  (requires quality, low-cap cable < 50 pf/m)

: EIA/RS-422A & RS-485A
: -7 to +12vDC
: +/- 25 vDC

: -40C to +65C
: -40C to +100C
: 10 to 90% RH, non-condensing
: wire up to 2.5mm (12 AWG)
: nylon polymide, fungus and termite resistant
  self-extinguishing
: approx 130g
: DIN EN 50 022 or DIN EN 50 035

Mechanical / Environment

Communication

Power Supply

Isolation

Block Diagram

Isolated

Supply

T+

R+

Gnd2

T-

5-pin Removable Compression Terminal Block

V+
V--

LED

R-

Main
Supply

LED

LED

T+

T-

Gnd2

screw terminals

screw terminals

LED

TX

RX

Copyright © 2003 RDC

RS-485 (compatible with EIA-422)

Connector

Fiber Size

Insertion Loss

Technology

Link Loss Budget

Fiber Optic

: ST (bayonet) 
: 9/125 µm single mode fiber
: 0.2 dB typically
: 1310 nm wavelength, ELED
: typically 9 dBm

: 1-port = none ; 2-port = 2.5Kv

Operating Range

Storage Range

Relative Humidity

Terminals

Case Material

Weight

Mounting Rail

: 50 mA (Nominal) @ 24 vDC
: 240 mA (Norminal)
: 25 mA (Norminal) @ 48 vDC
: Green LED for each isolated supply