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ICP DAS I-7520
Isolated RS-232 to RS-485 Converter

ICP DAS I-7520 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.


ICP DAS I-7520 Features

  • Auto Switching Baud Rate, 300~115200 bps
  • 3000 VDC Isolation Protection on the RS-485 side
  • Transmission Speed of up to 115200 bps
  • ESD Protection for the RS-232/422/485 Data Line
  • Power Input of +10 ~ +30 VDC
  • Supports Operating Temperatures from -25 C ~ +75 C
  • DIN-Rail


ICP DAS I-7520 Specification

  • Interface
    • Serial Interface
      • RS-232: TxD, RxD, GND
      • RS-485: Data+, Data-
    • 2-wire Cabling/4-wire Cabling: Belden 8941 (2P twisted-pair cable)/Belden 8942 (4P twisted-pair cable), if different cables are used, the transmission distance may change
    • Transfer Distance: Max. 1,200 m for at speed 9.6 kbps; Max. 400 m at 115.2 kbps
    • Max. Devices Supported: 256 (Without repeater)
    • Self-Tuner Asic Inside: Yes
    • Speed: 300 ~ 115200 bps
    • ESD Protection: Yes
    • 3000 VDCIsolated Voltage
      • I-7520: On RS-232 side
      • I-7520R: On RS-485 side
      • I-7520A: On RS-232 side
      • I-7520AR: On RS-485 side
    • Connection
      • RS-232: 9-Pin Female D-Sub
      • RS-422/485: Removable 10-Pin Terminal Block
  • LED Indicators: Power/Communication
  • Power
    • Input Voltage Range: +10 VDC ~ +30 VDC (Non-isolated)
    • Power Consumption: 1.2 W
  • Mechanical
    • Casing: Plastic
    • Flammability: Fire Retardant Materials (UL94-V0 Level)
    • Dimensions (WHD): 72118 35 mm
    • Installation: DIN-Rail
  • Environment
    • Operating Temperature: -25 C ~ +75 C
    • Humidity: 10 ~ 90% RH, non-condensing

ICP DAS I-7520 Ordering Information

  • I-7520 CR (Isolated RS-232 to RS-485 Converter (RoHS))
  • I-7520A CR (Isolated RS-232 to RS-422/485 Converter (RoHS))
  • I-7520-G CR (Isolated RS-232 to RS-485 Converter (Gray Cover) (RoHS))
  • I-7520A-G CR (Isolated RS-232 to RS-422/485 Converter (Gray Cover) (RoHS))
  • I-7520R CR (RS-232 to Isolated RS-485 Converter (RoHS))
  • I-7520AR CR (RS-232 to Isolated RS-422/485 Converter (RoHS))
  • I-7520R-G CR (RS-232 to Isolated RS-485 Converter (Gray Cover) (RoHS))
  • I-7520AR-G CR (RS-232 to Isolated RS-422/485 Converter (Gray Cover) (RoHS))
  • I-7510A CR (Isolated RS-422/485 Repeater (RoHS))


ICP DAS I-7520
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