Documentation Number –p/n 8679R1 485OP-1512qsg
©2010 B&B Electronics Manufacturing Company
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Underwriters Laboratories Conditions of Acceptability –
When installed in the end-use equipment, consideration
should be given to the following:
1.
The wiring terminals are suitable for factory wiring only.
2.
This device is to be mounted in a suitable enclosure in
the end-product.
3.
This device is suitable for operation at a maximum
surrounding air temperature as described in the
documentation.
4.
These devices are intended for use in a pollution
degree 2 environment.
Input Voltage: 10 – 14 VDC
Input Power: 1.0 Watt
Wire Range: 22 – 14 AWG
Tightening Torque: 0.5 Nm
Temperature rating of field installed conductors is 105 C
minimum, sized for 60 C ampacity.
Use copper wire only
Maximum surrounding ambient air temperature 55 C
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485OP Optically Isolated Repeater
This Quick Start Guide
12VDC Wall Power Supply with stripped and tinned
leads.
Put
Quick Start Guide
485OP
Optically Isolated RS-422/485
Repeater
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PCB Top
PCB Bottom
Operating Mode
Mode
JP1 & JP3 Position
RS-485 2-Wire (Half Duplex)
Center to Half
RS-484 4-Wire (Full Duplex)
Center to Full
RS-422 (Full Duplex)
Center to Full
Jumpers JP1 and JP3 determine whether the receivers will
be disabled when transmitting (half-duplex) or always
enabled (full duplex). As a general rule, JP1 and JP3
should be in the half-duplex position for two-wire operation
and in the full duplex position for four-wire systems.
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Label
Side
Signal
A(-) Data In
Left
TDA (-) / Data A(-)
B(+) Data In
Left
TDB(+) / Data B(+)
A(-) Data Out
Left
RDA(-) / Data A(-)
B(+) Data Out
Left
RDB(+) / Data B(+)
Signal GND 1
Left
Signal Ground
Prot. GND 1
Left
Protected Ground
GND
Left
Power Ground
+12 VDC
Left
10 – 14 VDC Power Input
A(-) Data Out
Right RDA(-) / Data A(-)
B(+) Data Out
Right RDB(+) / Data B(+)
A(-) Data In
Right RDA(-) / Data A(-)
B(+) Data In
Right RDB(+) / Data B(+)
Signal GND 2
Right Signal Ground
Prot. GND 2
Right Protected Ground
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