Moxa Technologies A51, A60 manual Chapter Introduction

Page 37

Chapter 1

Introduction

1.1 Overview

The MOXA RS-232 Surge Protection converter, A60, is designed to protect the RS-232 communication line from TOV (Transient Over Voltages) which comes from lightning, electrostatic discharge and other forms. TOV is always the major factor which damages components and makes ports unreliable. To improve this problem, we add Transient Voltage Suppressor to our I/O ports to clamp surge voltage to protect ports from TOV.

Due to the impulse signal generated by inductive devices in factory, the surge protection is best suited for the factory automation applications.

RS-232

RJ-45 Connector

Remote

RS-232 Sur ge
Protection
T R D D R C	D
X X T S T T C		Local
D D R R S S	D	Local

Power Jack

( Not used )

RS-232

RJ-45 Connector

Outlook of A60

~29~

Image 37

Contents A50/A51/A60 A50/A51 A60 Copyright Notice Moxa Internet Services Table of Contents Part II A60 RS-232 Surge Protection Page Overview IntroductionIntroduction Features and SpecificationsSpecifications A50/A51 with Mounting Kit Package Check List Introduction Switch Function Description Installation ProcedureSwitch settings table of SW1 and SW2 is as follows LED IndicatorsRS-422/RS-485 Pinouts A50/A51 RJ-45 Jack Terminal Block Connector Pinouts Signals Chapter Operation Point-to-point Wire Full DuplexWire Half Duplex Multidrop SW1 DTE Simplex/Transmit, Receive A50/A51A50/A51 Self Test Operation Appendix a RS-232 Pinouts & Cable Wiring Appendix a RS-232 Pinouts and Cable Wiring Appendix a RJ-45 Connector DB-25 Female P e n dxi B Appendix B Impedance Matching and Termination Resistors Appendix C Troubleshooting Appendix C Troubleshooting Chapter Introduction Features A60 with Mounting Kit ~32~ Installation TxD indicator signal from local port RxD indicator signal from remote port ~36~ Ppendix a Appendix a ∙ RS-232 Pinouts and Cable Wiring ∙ ~40~ Ppendix B