Rice Lake 320IS Plus Intrinsically Safe Digital Weight Indicator - I/O Module for Intrinsically Safe Systems Installation Manual - Manual (Page 5)

Introduction 1
About This Manual
This manual is intended for use by service technicians
responsible for installing and servicing the I/O
module. This manual applies to
I/O Module s using
version 2.0 or newer software.
Some procedures described in this
manual require work inside the
I/O
Module enclosure. These procedures
are to be performed by qualified service
personnel only.
Improper specification, installation, or service of this
equipment could result in personal injury or property
damage.
Authorized distributors and their employees
can view or download this manual from the
Rice Lake Weighing Systems distributor
site at
www.rlws.com .
1.0 Introduction
The I/O Module is an external device designed for use with the 320IS and 320IS Plus digital weight indicators.
When placed in the safe area, its fiber optic interface allows it to provide remote functions for indicators in
hazardous environments. The
I/O Module provides access to the indicator through two serial ports supporting
several physical standards (RS-232, RS-485, RS-422, and 20mA current loop) and integrating the following I/
Os:
• Two isolated 16-bit analog outputs
• Four digital inputs
• Four relay contact outputs
The I/O Module operating parameters are stored in the attached indicator. After both the indicator and I/O
Module are connected and powered up, the module attempts to communicate with the indicator and download
configuration parameters. The peripheries are operated by the indicator, which acts as the master device in the
system.
Warning