Advantech ADAM-4520 Isolated RS-232 to RS-422 / RS-485 Converter ADAM-4520-D2E Data Sheet

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Most industrial computer systems come with standard
RS-232 serial ports. Though widely accepted, RS-232 has limited
transmission speed, range, and networking capabilities. The RS-422
and RS-485 standards overcome these limitations by using differential
voltage lines for data and control signals. The
ADAM-4520/4522 converter lets you take advantage of RS-422 and
RS-485 on systems originally equipped with RS-232. It transparently
converts RS-232 signals into isolated RS-422 or RS-485 signals.  You
do not need to change your PC's hardware or your software.  The
ADAM-4520/4522 lets you easily build an industrial grade, long distance
communication system with standard PC hardware.

The ADAM-4510/4510S repeater simply amplifies, or boosts, existing
RS-422/485 signals to enable them to cover longer distances. It extends
the communication distance by 4000 ft. (1200 m) or increases the
maximum number of connected nodes by 32.

The RS-485 standard supports half-duplex communication. This means
that a single pair of wires is used to both transmit and receive data.
Handshaking signals such as RTS (Request To Send) are normally
used to control the direction of the data flow. A special I/O circuit in the
ADAM-4510/4510S and ADAM-4520/4522 automatically senses the
direction of the data flow and switches the transmission direction. No
handshaking signals are necessary—you can build an RS-485 network
with just two wires. This RS-485 control is completely transparent to
the user. Software written for half-duplex RS-232 works without
modification.

• Power requirement: Unregulated +10 ~ +30 V

DC

 . Module

protected from power reversals

• Case: ABS with captive mounting hardware

• Accessories (supplied): ABS DIN-rail mounting adapter,

SECC panel mounting bracket

• Plug-in screw terminal wiring: Accepts AWG 1- #12 or

2- #14 ~ #22 (0.5 to 2.5 mm

2

) wires

• Operating temperature: -10 to 70°

 

C (14 to 158° F)

• Dimensions: 60 mm x 120 mm  (2.36" x 4.41")

• Transmission speed (bps): 1200, 2400, 4800, 9600,

19.2 K, 38.4 K, 57.6 K, 115.2 K  (switchable)

• Isolation voltage: 3000 V

DC 

 (ADAM-4510S only)

• RS-422/RS-485 interface connector: Plug-in screw terminal

• Power consumption: 1.4 W

• Transmission speed (bps): 1200, 2400, 4800, 9600,

19.2 K, 38.4 K,  57.6 K 115.2 K, RTS control and RS-422 mode
(switchable)

• Isolation voltage: 3000 V

DC 

 (ADAM-4520 only)

• RS-232 interface connector: Female DB-9

• RS-422/RS-485 interface connector: Plug-in screw terminal

• Power consumption: 1.2 W

❑ ADAM-4510: RS-422/RS-485 repeater

❑ ADAM-4510S: Isolated RS-422/RS-485 repeater

❑ ADAM-4520: Isolated RS-232 to RS-422/485 converter

❑ ADAM-4522: RS-232 to RS-422/485 converter

• Automatic internal RS-485 bus supervision

• No external flow control signals required for RS-485

• 3000 V

DC

 isolation protection (ADAM-4510S/4520)

• Transient suppression on RS-485 data lines

• Speeds up to 115.2 Kbps

• Networking up to 4000 feet

• Reserved space for termination resistors

• Power and data flow indicator for troubleshooting

• Power requirement: +10 to +30 V

DC

• Mounts easily on a DIN-rail or panel