Robust DataComm rdc485hub-dv-4p-cc Hub Техническое Руководство

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   

Model: rdc485hub 

      The rdc485hub allows connection of one RS-232 and two 
RS485 devices complete with full 4-port 2.5kv optical/galvanic 
isolation - including 3 isolated DC supplies.  Each port is fully 
isolated (with floating ground) with reference to the other data ports 
and the power supply. 

   The rdc485hub can operate as a full 3-way hub. Any device can 
freely talk to the other two.  Any data received on any port is echoed 
out the other two.  Moving one internal jumper (J3) converts it to a 
Master/Slave configuration where any data received on port C 
("Master") is echoed out both port A and B ("Slaves").  Data 
received on either port A or B is only echoed out port C ("Master"). 

   The RS-485 ports can be field set for 2 or 4-wire operation, plus 
includes options for line bias and 120-ohm internal termination.  
500-watt voltage transient suppressor diodes protect the rdc485hub 
from normal mode surges, while the full galvanic isolation protects 
the rdc485hub from common mode surges. 

   Isolation, industrial design, small size, DIN rail mount, user 
indication, and DC supply make the rdc485hub a very engineer-
friendly device for your industrial data communication system. 

Port Type  ...............................  EIA/RS-232 

EIA/RS-485 

Voltage Levels  .......................  ±9v DC 

-7 to +12v DC 

Permitted Surge .....................  ±25v DC 

±25v DC 

Surge Diodes Installed  ..........  ±15v, 500-watt  ±15v, 500-watt 

RS-232 to RS-485 to RS-485

 ......  2500v (optical, 5kV test) 

Power to RS-485 Port A  ........  2500v (galvanic, 3kV test) 
Power to RS-485 Port B  ........  2500v (galvanic, 3kV test) 
Power to RS-232 Port C  ........  2500v (galvanic, 3kV test) 
Conformal Coating .................  (optional) 5000v spec 

9v to 36v DC (1.2watt max) ....  12v or 24v including batteries 
48v DC +/- 20% (38-58v)........  48v for telecom & transportation 
5v DC +/- 5% (4.75-5.25v)......  5v for OEM integration 
User Indication .......................  Green LED for power status 

Max Speed  ............................  115kbps , no config required 
Character Setting ...................  Transparent, no config required 
Duplex / Direction  ..................  Automatic, no RTS/CTS required 
User Indication .......................  Yellow LED for each Receive Signal 
 

  Red “Break’ LED for each RS-485 

Maximum Bus Length ............   1000m per EIA-485 
 

  15m per EIA-232 

Ambient operating temperature:   -40C to + 65C 
Ambient storage temperature: 

 -40C to +100C 

Relative Humidity.................... 10 to 95% RH, non condensing 
Casing; good fungus & termite resistance; self-extinguishing. 
Weight ...................................  130g. 
Terminal Capacity ..................  2.5mm strand (12 AWG) 
 

 4.0mm solid (12 AWG). 

Mounting Rail .........................  DIN EN 50022 (35mm symmetrical) 
 

 DIN EN 50025 (32mm asymmetrical) 

(Note: Style DIN 50022 works best)

 

 

 

One RS-232 Host has 2 RS-485 network (can be multi-dropped) 

 

Two RS-485 Hosts share single RS-232 Slave (only ONE host can 
talk to slave at one time – rdc485hub does NOT arbitrate) 

9 to 36vDC, 1.5 watt (63mA@24v) 

48vDC +/- 20% 1.5 watt 

5vDC +/- 5% (260mA max) 

Full 4-of-4 Ground Isolation 

cd      RS-232 = DB9, RS-485 Terminals 

All 9-pin D-Shell 

Conformal Coating (+5000v) 

Example: model rdc485hub-dv-4p-cd is an “Isolated 3-way Hub, 
DIN-Rail Mount, 9-36vDC Supply, Full 4-of-4 Ground Isolation, RS-232
with D-shell connectors RS-485 Ports with removable terminal blocks.”