Page 1
RS-232 to RS-422/485 Converters
CF
4
Converters, Repeaters and Hubs RS-232/RS-422/485 Converters
Features
Auto Switching Baud Rate, 300~115200 bps
3000 VDC Isolation Protection on the RS-485 side
ESD Protection for the RS-232/422/485 Data Line
Transmission Speed of up to 115200 bps
Power Input of +10 ~ +30 VDC
Supports Operating Temperatures from -25 °C ~ +75 °C
DIN-Rail
I-7520/I-7520A
I-7520R/I-7520AR
I-7520: Isolated RS-232 to RS-485 Converter
I-7520A: Isolated RS-232 to RS-422/485 Converter
I-7520R: RS-232 to Isolated RS-485 Converter
I-7520AR: RS-232 to Isolated RS-422/485 Converter
Introduction
Most industrial computer systems provide 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, which
transparently converts RS-232 signals into isolated RS-422 or RS-485 signal with no need to change any hardware or software. The I-7520/I-7520A lets you
easily build an industrial grade, long-distance communication system using standard PC hardware.
The design of the isolation between the I-7520 and the I-7520R/AR is different. If the user wants to supply power from the PLC/PC, the I-7520R/AR should
be used, otherwise the isolation will be broken. Refer to the I-7000 bus converter manual for detailed information.
4
I-7520(R)/I-7520A(R)
Specifications
Models
Interface
Serial Interface
2-wire Cabling/4-wire Cabling
Transfer Distance Max. 1,200 m for at speed 9.6 kbps; Max. 400 m at 115.2 kbps
Self-Tuner Asic Inside
Speed
ESD Protection
DC
3000 V
Connection
LED Indicators
Power/Communication
Power
Input Voltage Range
Power Consumption
Mechanical
Casing
Flammability
Dimensions (W x H x D)
Installation
Environment
Operating Temperature
Storage Temperature
Humidity
RS-232
RS-422
RS-485
Isolated Voltage
RS-232
RS-422/485
I-7520
TxD, RxD, GND
Data+, Data-
Belden 8941 (2P twisted-pair cable)/Belden 8942 (4P twisted-pair cable), if different cables are used,
the transmission distance may change
256 (Without repeater)Max. Devices Supported
Yes
300 ~ 115200 bps
Yes
On RS-232 side On RS-485 side On RS-232 side On RS-485 side
9-Pin Female D-Sub
Removable 10-Pin Terminal Block
Yes
+10 VDC ~ +30 VDC (Non-isolated)
1.2 W
Plastic
Fire Retardant Materials (UL94-V0 Level)
72 mm x 118 mm x 35 mm
DIN-Rail
-25 °C ~ +75 °C
-30 °C ~ +75 °C
10 ~ 90% RH, non-condensing
I-7520R
I-7520A
TxD+, TxD-, RxD+, RxDThe RS-422 and RS-485 cannot be used simultaneously
I-7520AR
4-4-3
ICP DAS CO., LTD Professional Provider of High Quality Industrial Computer Products and Data Acquisition Systems
Page 2
CF
Applications
TxD
RxD
GND
Isolation Side
Power Input
TxD
RxD
GND
Power Input
DATA+
DATA-
Isolation Side
DATA+
DATA-
Pin Assignments
I-7520/I-7520R
Terminal
No.
RS-485
Assignment
01 DATA+
02
DATA03 -04 -05 -06 -07 -08 -09 (R)+Vs
10 (B)GND
Pin
Device 1I-7520 Device 3Device 2
DATA+
DATA-
DATA+
Twisted Pair Wiring
Device 1I-7520R
DATA+
DATA-
DATA+
Twisted Pair Wiring
Pin
Terminal No.
Assign-
ment
GND
05
04
-RxD
03
TxD
02
--
01
RS-232: Female DB-9 Connector
09 -08 -07 -06 --
Pin
Assign-
ment
Industrial Communication Products
I-7520A
TxD
DATA-
DATA+
DATA-
Device 3Device 2
DATA-
DATA+
DATA-
RS-232
I-7520
I-7520A
I-7520R
I-7520AR
01 10
RxD
GND
Isolation Side
Power Input
TxD
RxD
GND
Power Input
I-7520A/I-7520AR
Terminal
RS-485
RS-422/
485
No.
Isolation Site
TxD+
TxDRxD+
RxD-
I-7520AR
Isolation Side
TxD+
TxDRxD+
RxD-
Pin
Assignment
01 DATA1+
DATA1-
02
03 -04 TxD+
05 TxD06 RxD+/DATA2+
07 RxD-/DATA208 -09 (R)+Vs
10 (B)GND
RS-422 Device
RxD+
RxDTxD+
TxD-
RS-422 Device
RxD+
RxDTxD+
TxD-
Pin
Terminal No.
Assign-
ment
GND
05
04
-RxD
03
TxD
02
--
01
RS-232: Female DB-9 Connector
09 -08 -07 -06 --
Pin
Assign-
ment
4
Converters, Repeaters and Hubs RS-232/RS-422/485 Converters
4
Dimensions (Unit: mm)
6.0
56.0
101
118
72.0
Front View Bottom View
35.4
56.0
Back View
Top View
35
Ordering Information
I-7520 CR
I-7520A CR
I-7520-G CR
I-7520A-G CR
I-7520R CR
I-7520AR CR
I-7520R-G CR
I-7520AR-G CR
Isolated RS-232 to RS-485 Converter (RoHS)
Isolated RS-232 to RS-422/485 Converter (RoHS)
Isolated RS-232 to RS-485 Converter (Gray Cover) (RoHS)
Isolated RS-232 to RS-422/485 Converter (Gray Cover) (RoHS)
RS-232 to Isolated RS-485 Converter (RoHS)
RS-232 to Isolated RS-422/485 Converter (RoHS)
RS-232 to Isolated RS-485 Converter (Gray Cover) (RoHS)
RS-232 to Isolated RS-422/485 Converter (Gray Cover) (RoHS)
Website: http://www.icpdas.com E-mail: [email protected]
Accessories
DC
/0.25 A, 6 W Power Supply
24 V
GPSU06U-6
DIN-KA52F
I-7510 CR
I-7510A CR
CA-0915
DC
/1.04 A, 25 W Power Supply with Din-Rail Mounting
24 V
Isolated RS-485 Repeater (RoHS)
Isolated RS-422/485 Repeater (RoHS)
9-Pin Male-Female D-Sub Cable, 1.5 m
39.5
35
2-SCREW
M3
31.5
Side ViewDin-Rail Mounting Bracket
I-7520(R)/I-7520A(R)
4-4-4
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