Robust DataComm rdc232iso Isolator 仕様ガイド
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
www.robustdc.com
Model: rdc232iso
Non-powered EIA/RS-232 Isolator
(3-wire: Txd, Rxd, Signal Gnd)
(3-wire: Txd, Rxd, Signal Gnd)
The rdc232iso safely connects two RS-232
devices without danger of ground loops and
damaging surges. The RS-232 signals and g
optical isolation with coating.
devices without danger of ground loops and
damaging surges. The RS-232 signals and g
optical isolation with coating.
The data li
round have 5000-volt
nes Txd & Rxd are fully isolated, plus over 1 million ohms
and
of resistance is added to the ground path. This effectively
decouples the signal grounds, preventing ground loops and
common-mode surge currents. The rdc232iso has one DTE
one DCE 9-pin d-shell with computer-style pin-outs.
decouples the signal grounds, preventing ground loops and
common-mode surge currents. The rdc232iso has one DTE
one DCE 9-pin d-shell with computer-style pin-outs.
RS-232 port Description:
Signal Type ............................ EIA/RS-232 (C to F)
rdc232ir5 if required)
Voltage Levels ....................... +/- 6v to +/- 15v DC
Permitted Surge ..................... +/- 25v DC
Surge Diodes Installed .......... (none – use
Permitted Surge ..................... +/- 25v DC
Surge Diodes Installed .......... (none – use
Isolation RS-232 to RS-232 (ISO/IEC 9549):
Model: rdc232iso .................. 5000v (conformal coated)
Power Supply Options:
None required, draws power from RS-232 signal pins.
ay damage
Note: Connecting external power to handshake lines m
the isolator. Contact technical support for more information.
Communication:
Rated Speed .......................... At least 38,400 bps
ds on the
S-
)
Character Setting ...................
)
Possible Speed ...................... Up to 57 kbps (depen
physical properties of attached R
232 port and varies device to device
Transparent, no config required
232 port and varies device to device
Transparent, no config required
User Indication ....................... (none – use rdc232ir5 if required
Standard Distance ................. 15m or 2500pf per wire
Standard Distance ................. 15m or 2500pf per wire
Environmental:
Operating temperature ........... -40C° to + 65C°
n condensing
Storage temperature .............. -40C° to +100C°
Relative Humidity ................... 10 to 95% RH, no
Weight ................................... 21g
DB9 Connector Pins ............... 30µ gold pins, 500 insertion cycles
RoHS Compliant ..................... Yes (with the exception of lead)
Relative Humidity ................... 10 to 95% RH, no
Weight ................................... 21g
DB9 Connector Pins ............... 30µ gold pins, 500 insertion cycles
RoHS Compliant ..................... Yes (with the exception of lead)
Block Diagram:
Application Details:
Contrary to what some vendors imply, RS-232 was never designed
)
recommend that all
to “power” external devices. Current from compliant RS-232 chips
varies between vendors, but stays in the range of 1mA to 15mA.
This is not very much power. Thus the performance of any self-
power device is greatly affected by the chips used in the driving
device. You will find the rdc232iso (or any “self-powered” device
works better with some equipment than others.
varies between vendors, but stays in the range of 1mA to 15mA.
This is not very much power. Thus the performance of any self-
power device is greatly affected by the chips used in the driving
device. You will find the rdc232iso (or any “self-powered” device
works better with some equipment than others.
To get maximum performance and reliability, we
driven signals be connected. This is Txd, DTR, and RTS on the
DCE side and Rxd, DSR, CTS, and DCD on the DTE side. While
the rdc232iso often operates with only the power from the transmit
pin, the more driver signals you connect, the better it performs. The
rdc232iso works whether the control signals are low or high.
driven signals be connected. This is Txd, DTR, and RTS on the
DCE side and Rxd, DSR, CTS, and DCD on the DTE side. While
the rdc232iso often operates with only the power from the transmit
pin, the more driver signals you connect, the better it performs. The
rdc232iso works whether the control signals are low or high.
When to use an isolator?
ook to industrial equipment
•
radio or wire modems (lightning/surge
•
When connecting a noteb
•
When connecting equipment from 2 different vendors
•
When connecting control room to factory floor devices
•
When connecting UPS powered devices to non-UPS
powered devices
When connecting
attractors) to most other equipment.
powered devices
When connecting
attractors) to most other equipment.
Cable Connection:
2
5
3
2
5
4
4
Rxd
Gnd
DTR
DSR
3
Txd
7
RTS
CTS
CTS
RI
9
9-pin DTE
(DCE)
DCD
1
rdc232iso
6
8
1
Pins: 2,3,5
Active Signals
Active Signals
Red Pins:
Help Power
Help Power
White Pins:
No Connection
No Connection
2
3
3
(DTE)
Yellow Pins:
Loop ONLY
if required!
Loop ONLY
if required!
6
4
7
9
8
Local Device
Remote Device
9
Cable recommended
by device maker for
connection to a
9-pin computer port.
by device maker for
connection to a
9-pin computer port.
However, if you need
DSR or CTS input
you'll need to do this
at the remote device.
DSR or CTS input
you'll need to do this
at the remote device.
4
7
5
6
1
1
8
Note:
The desire to maximize the power available for a cleaner
RS-232 signal means you don’t want to connect receive
pins at attached device unless required.
RS-232 signal means you don’t want to connect receive
pins at attached device unless required.
Order Information:
rdc232iso
Non-Powered 3-wire RS-232 Isolator
Standard option for all units
* Conformal Coating (for 5000v isolation) plus
includes 30µ gold pins in connector
7
TxD
Gnd1
RxD
TxD
Gnd2
RxD
9
-p
in
M
a
le
D
T
E
9
-p
in
F
e
m
a
le
D
E
8
5000-volt Optical Isolation
DSR
CTS
DTR
RTS
4
o
w
e
r
ir
cu
it
6
5
5
Is
o
la
tio
n
B
a
rr
ie
r
2
3
3
2
o
w
e
r
ir
cu
it
Mechanical Dimensions: mm (inches)
17.0(0.67)
4
.0
(0
.1
6
)
Making Industrial Data Flow
Like Water ... Safely, Silently
& Sanely
www.robustdc.com
3
.0
(0
.1
2
)
63.0(2.48)
53.0(2.09)
35.3(1.39)
2
0
.0
(0
.7
9
)
3
3
.0
(1
.3
0
)