Comnet FDX721SHR Installation And Operation Manual Download Page 1

INS_FDX72SHR_REV–

02/29/12

PAGE 1

INSTALLATION AND OPERATION MANUAL 

FDX72(M,S)1SHR

multI-PRotocol RS232/422/485 DAtA tRANScEIVER  

FEAtuRING SElF-HEAlING RING oPERAtIoN

the comNet™ FDX72(m,S)1SHR series Self-Healing Ring transceiver unit is 
a fully-digital transceiver designed for implementing full RS232, RS422 or 
RS485 2 or 4-wire traffic signalization/communications data networks of the 
highest possible reliability. A network of FDX72SHR units can support one full-
duplex data channel or two half-duplex data channels. Full data re-clocking and 
regeneration permit an almost unlimited number of transceiver/controller units 
to be used within the network. these environmentally hardened transceivers are 
ideal for use in unconditioned out-of-plant or roadside installations. 

utilizing wave division multiplexing technology (WDm), only one optical fiber is 
required between units to implement a fully self-healing ring. two FDX72SHR 
units can be used in a redundant point-to-point topology.

Bi-color (Red/Green) lED indicators are provided for rapidly ascertaining 
equipment operating status including the location of fiber breaks. See 

Figure 7 

on 

Page 5

 for an explanation of lED indications.

these units are interchangeable between stand-alone or card-cage mount 
configurations. See 

Figure A

 on 

Page 7

 for mounting instructions.

See 

Figures 1 – 8

 for complete installation details.

Summary of Contents for FDX721SHR

Page 1: ...ed number of transceiver controller units to be used within the network These environmentally hardened transceivers are ideal for use in unconditioned out of plant or roadside installations Utilizing wave division multiplexing technology WDM only one optical fiber is required between units to implement a fully self healing ring Two FDX72SHR units can be used in a redundant point to point topology ...

Page 2: ...al Port A must be connected to Optical Port B on another FDX72SHR unit Similarly Optical Port B must be connected to Optical Port A on another FDX72SHR unit See Figure 8 on Page 6 BLACK BLACK WITH WHITE STRIPE Power Supply Surface Mount 8 15 VDC 4W Rack Mount From Rack NOTE Remove Electrical Connector for Rack Mount Units Ring Length Switch See Figure 4 Data Format Switch See Figure 3 7 Pin Data C...

Page 3: ...s in Master Mode transmit data to all units set to Remote Mode Units in Remote Mode transmit data to all units set to Master Mode There is no limit to the number of Masters or Remotes in a system as long as the equipment connected to the FDX72SHR can handle multiple Masters and multiple Remotes Most applications requiring Master Remote communications would use just one Master and multiple Remotes ...

Page 4: ... phase or Manchester DIN DIN DOUT DOUT Data Out Data Out 2 Wire RS485 Sensornet DIN DIN DIN DIN Data A Data B Data Transmit Data Receive Signal Ground DIN DOUT GND DOUT DIN GND 4 Wire RS485 DIN DIN DOUT DOUT DOUT DOUT DIN DIN Data Out A Data Out B Data In A Data In B DIN DIN DOUT DOUT DOUT DOUT DIN DIN Data Out Data Out Data In Data In Data In Data In Data A Data B Data Receive Data Transmit Signa...

Page 5: ...DATA CONNECTOR BIAS Current limited 5V connection This terminal can be used as a connection for pull up resistors if required ALARM Alarm relay output Indicates fault conditions The relay is internally connected to the GND terminal when no faults are detected i e a normally closed relay The relay circuit opens when a fault is detected anywhere in the system GND Signal ground reference This termina...

Page 6: ... greater than 9 hops away the LED will use a combination of long and short red flashes Each long flash indicates 10 hops Each short flash indicates 1 hop For example a fault 47 hops away would be encoded as 4 long red flashes followed immediately by 7 short red flashes The pattern repeats indefinitely until the fault is resolved The diagram above shows the connections for a system of four FDX72SHR...

Page 7: ...card is oriented right side up and slide it into the card guides in the rack until the edge connector at the back of the card seats in the corresponding slot in the rack s connector panel Seating may require thumb pressure on the top and bottom of the card s front panel CAUTION Take care not to press on any of the LEDs 2 Tighten the two thumb screws on the card until the front panel of the card is...

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