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PDF DCP485 Data sheet ( Hoja de datos )
| Número de pieza | DCP485 | |
| Descripción | Fully Isolated DIN Rail RS-232 to RS-485 Converter/Line Driver | |
| Fabricantes | DATAFORTH | |
| Logotipo |  |
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Industrial Data Communication Products Data Comm.
DCP485
Fully Isolated DIN Rail RS-232 to RS-485 Converter/Line Driver
Description
The DCP485 is a compact RS-232 to RS-485 converter which features a
complete electrical isolation barrier and heavy duty electrical surge protectors.
These devices feature a DIN rail mountable enclosure for application to a
junction box, a panel, a relay rack, the sides of computer equipment, or
anywhere a DIN rail can be mounted. Isolation is provided by optical couplers
and a transformer isolated DC-to-DC converter. The RS-232 connection is
through male or female EIA 9-pin D-sub connectors, or a 3-wire RS-232
connection can be made through convenient pluggable screw terminals. The
RS-485 connections are made through convenient pluggable solderless screw
terminals.
The DCP485 series is designed for full duplex operation over two wire pairs.
Outputs are tri-state, allowing multidropping of up to 32 units over one pair.
Data rates are DC to 115.2k bits per second (baud). Four diagnostic LED
indicators are provided for installation guidance and system troubleshooting.
The RS-232 interface includes Request To Send (RTS) and Data Terminal
Ready (DTR) either of which can be used via DIP switches to enable the
RS-485 transmitter. Alternately, the DCP485 offers automatic line switching in
which the RS-485 transmitter is enabled automatically by each character sent
on the RS-232 Transmit Data (TD) line. Additionally, the RS-485 transmitter
and receiver may be independently enabled continuously or under RS-232
control. A convenient null modem switch is provided for the data lines. Also, line
termination switches independently connect line termination and line bias
resistors to the RS-485 lines. The units are powered from wide-range voltages
of +10 to +30VDC through pluggable solderless screw terminals.
Features
• Complete Isolation with Optical Couplers and
Transformer-Coupled DC-to-DC Converter
• Industrial Surge Protection Devices and 15kV
ESD Protected RS-232 Inherent
• Four LED Diagnostic Indicators
• 38.4k bps (baud) at 1 Mile (1.6km),
115.2k bps (baud) at 0.8 Mile (1.3km)
• RTS, DTR, or Auto RS-485 Transmitter
Control
• Tri-state Outputs for Multidrop Applications,
up to 32 Devices
• Selection of Connectors
• Wide Operating Temperature Range
• Pluggable Solderless Screw Terminal Field
Connections
• CE Compliant
Dataforth does not authorize or warrant its products for use in life support/
critical applications.
Specifications
Model
Baud Rate Range
Baud Rate
Distance(miles)
Distance(km)
Wire Capacitance
Max Multidrop Units
Common Mode Isolation
Differential Mode Surge
Protection (9 devices)
Modes
Channel Lines(1)
Control Lines(1)
Null Modem Switch
RS-485 Output Drive
RS-485 Input Impedance
Power
DCP485
0-115.2k bps (Baud)
115.2k 57.6k 38.4k 19.2k 9.6k 4.8k 2.4k-0
0.8 0.9 1.0 2.0 3.0 4.0 7.0
1.3 1.5 1.6 3.2 4.8 6.4 11.3
Equal to 25pf per foot and up to 32 multidrop units
32
Surge: 6000VDC, 1 min.
Continuous: 1500Vrms
(DC input and RS-232 inputs and outputs)
ANSI/IEEE C37.90.1
(all RS-485 inputs and outputs)
Asynchronous 4-wire full-duplex, 2-wire
half-duplex, 2-wire simplex
TD, RD
RTS, DTR
1 (Reverses RS-232 pins 2 and 3)
28mA max/output
12kΩ min/input
+10 to +30 VDC at 150mA max
Model
DCP485
Environmental:
Operating Temperature Range
Storage Temperature Range
Relative Humidity
Altitude
-40°C to +60°C
-40°C to +70°C
0-95% non-condensing
to 15000 ft (4574 m)
Dimensions
4.3” x 3.3” x 0.89”
(109mm x 84mm x 22.5mm)
Weight
4.6 oz (130g)
MTTF(2)
>100,000 hrs
NOTES:
(1) TD = Transmit Data, RD = Receive Data, RTS = Request To Send, DTR = Data Terminal Ready.
(2) Ground-benign environmental conditions (no salt atmosphere, <50°C ambient temperature).
Visit our website www.dataforth.com
SD1083 Rev C
1 page  
Industrial Data Communication Products Data Comm.
Figure 2: DCP485 2 Wire Multidrop Configuration
Figure 3: DCP485 Mechanical Drawing
Visit our website www.dataforth.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet DCP485.PDF ] | |
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