320IS
Intrinsically Safe Digital Weight Indicator
Version 2.1
Installation Manual
PN 74612 Rev D
An ISO 9001 registered company
© Rice Lake Weighing Systems. All rights reserved.
Rice Lake Weighing Systems® is a registered trademark of
Rice Lake Weighing Systems.
All other brand or product names within this publication are trademarks or
registered trademarks of their respective companies.
All information contained within this publication is, to the best of our knowledge, complete
and accurate at the time of publication. Rice Lake Weighing Systems reserves the right to
make changes to the technology, features, specifications and design of the equipment
without notice.
The most current version of this publication, software, firmware and all other product
updates can be found on our website:
www.ricelake.com
Contents
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
1.0 Introduction..................................................................................................................................... 1
1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Factory Mutual Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Front Panel Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.6 LED Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.7 Front Panel Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.8 Indicator Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.8.1 Toggle Gross/Net Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.8.2 Toggle Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.8.3 Zero Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.8.4 Acquire Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.8.5 Remove Stored Tare Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.8.6 Print Ticket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.0 Installation ...................................................................................................................................... 7
2.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Enclosure Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Hazardous Area Installation of the 320IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3.1 Power Supply to Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.2 AC Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.3 Battery Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Cable Connections and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4.1 Braided Power Cable Connection with Ferrite Core. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4.2 Braided Power Cable Connection Without Ferrite Core. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4.3 Braided Load Cell Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4.4 Foil Load Cell Cable Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4.5 Load Cells. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5 Fiber Optics Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.1 Assembling Fiber Optics Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.6 Enclosure Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.7 Control Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.0 Configuration ................................................................................................................................ 18
3.1 Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.1 Revolution Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.2 EDP Command Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.3 Front Panel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Menu Structures and Parameter Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.1 Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.2 Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.3.3 Calibration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3.4 Serial Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.3.5 Program Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.3.6 Print Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3.7 Analog Output Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.3.8 Version Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
© Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Rice Lake Weighing Systems is an ISO 9001 registered company.
Specifications subject to change without notice.
Version 2.1 August 05, 2016
Contents i
4.0 Calibration .................................................................................................................................... 31
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars
4.1 Front Panel Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.2 EDP Command Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.3 Revolution
®
Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
5.0 EDP Commands............................................................................................................................. 33
5.1 The EDP Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1.1 Key Press Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1.2 Reporting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.1.3 The RESETCONFIGURATION Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.1.4 Parameter Setting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.1.5 Normal Mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.2 Saving and Transferring Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.2.1 Saving Indicator Data to a Personal Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.2.2 Downloading Configuration Data from PC to Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.0 Print Formatting ............................................................................................................................ 39
6.1 Print Formatting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.2 Customizing Print Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.2.1 Using the EDP Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.2.2 Using the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.2.3 Using Revolution® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.0 Appendix A.................................................................................................................................... 42
7.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.1.1 Displayed Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.1.2 Using the XE EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.2 Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2.1 Using the P EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2.2 Using the ZZ EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.3 Continuous Output (Stream) Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.4 ASCII Character Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.5 Conversion Factors for Secondary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
7.6 Digital Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.6.1 DFSENS and DFTHRH Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.6.2 Setting the Digital Filter Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.7 Analog Output Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.8 Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.0 Appendix B.................................................................................................................................... 53
8.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.2 Enclosure Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.3 Installation of the I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.3.1 AC Wiring/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.3.2 EDP and Printer Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.3.3 RS-232 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.3.4 RS-485 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.3.5 RS-422 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.3.6 20mA Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.4 Fiber Optics Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.5 Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.6 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.7 Relay Contact Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.8 I/O Module Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.9 320IS Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
ii 320IS Installation Manual
1.0 Introduction
Important
WARNING
CAUTION
Important
WARNING
This manual is intended for use by service technicians responsible for installing and servicing 320IS digital weight
indicators. This manual applies to indicators using Version 2.1 of the 320IS software.
Configuration and calibration of the indicator can be accomplished using the indicator front panel keys, the EDP
command set, or the 320IS configuration utility. See Section 3.1 on page 18 for information about configuration
methods.
The 320IS is a Factory Mutual-Entity approved component. This approval is valid only if the installation
conforms to the guidelines described in this manual and FM-approved control drawing (PN 72717). If
modifications are made to the installation procedure, or the instrumentation is changed in any way,
including field repair or modification, Factory Mutual approval is void, and all warranties, expressed or implied are void.
The customer becomes fully responsible and liable for such modifications.
Manuals can be viewed or downloaded on the Rice Lake Weighing Systems distributor site at
www.ricelake.com.
Warranty information can be found on the website at;
1. 1 S af e ty
Safety Symbol Definitions
Indicates a potentially hazardous situation that, if not avoided, could result in serious injury or death, and
includes hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided may result in minor or moderate injury.
Indicates information about procedures that, if not observed, could result in damage to equipment or
corruption to and loss of data.
www.ricelake.com/warranties
General Safety
Do not operate or work on this equipment unless this manual has been read and the instructions and
warnings in this manual are understood. Contact any Rice Lake Weighing Systems dealer for replacement
manuals.
Failure to heed may result in serious injury or death.
Some procedures described in this manual require work inside the indicator enclosure. These procedures are to be
performed by qualified service personnel only.
Do not allow minors (children) or inexperienced persons to operate this unit.
Do not use for purposes other than weight taking.
Do not operate indicator without enclosure fully assembled.
Do not use this product if any of the components are cracked.
Do not exceed the rated load limit of the unit.
Do not make alterations or modifications to the unit.
Do not remove or obscure warning labels.
Do not submerge.
Before opening the unit, ensure power is disconnected.
The non-metallic parts are considered to constitute an electrostatic discharge hazard. Clean only with a damp cloth.
Substitution of components may impair intrinsic safety.
To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing.
Introduction 1
1.2 Overview
WARNING
The 320IS is a single-channel digital weight indicator designed and approved to operate as an intrinsically safe
system in a wide variety of scale and weighing applications. The indicator is housed in a NEMA Type 4X/IP66rated stainless steel sealed case. The standard unit is equipped with a tilt stand base for tabletop or wall
mounting applications. The indicator front panel consists of a large (0.8'', 20 mm, 16-segment), six-digit LED
display, 6-button keypad and eight LED annunciators. Features include:
•Drives up to four 350 or eight 700 load cells
•Supports four-wire and six-wire load cell connections (six-wire remote sense recommended)
•Full-duplex fiber optic interface to attach an external I/O board located in the safe area
The 320IS is NTEP certified and pending Measurement Canada approval for Classes I, II and III at 10,000
divisions. See Section 8.9 on page 61 for detailed specifications.
Available with optional I/O Module (PN 72721):
•Four configurable digital inputs
•Four digitally-controlled single pole single throw-normally open non-latching relay contact outputs
•Electronic data processing (EDP) port communications at up to 38400 bps for full duplex RS-232/RS-422/
RS-485 and Current loop
•Printer port communications at up to 38400 bps for full duplex RS-232/RS-422/RS-485 and Current loop
•Two 16-bit analog output channels provide ±10V or ±5V, 0-5V or 0-10V, and 4-20 mA tracking of gross or
net weight values
1.3 Factory Mutual Approval
The 320IS is Factory Mutual (FM) Entity approved for:
•Classes I, II, and III
•Divisions 1 and 2
•Groups A, B, C, D, E, F and G
•T-rating T4
Only devices that have FM Entity Appr oval with proper entity parameters may be used unless specifically listed in
this manual or control drawing PN 72717 as part of the Rice Lake Factory Mutual systems approval. Failure to
comply with this voids the FM approval.
The classification of hazardous materials are different in the US and European standards. Because of this, the
safety class of the 320IS is declared in the US standards: Class I, II, III, DIV1, Groups A-G.
Substitution of components may impair intrinsic safety.
To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing.
1.4 Operating Modes
The 320IS has three modes of operation.
Normal (Primary) Mode
Normal mode is the default mode of the indicator . Th e indicator displays gro ss or net weights as indi cated by LED
annunciators (see Figure 1-1) to indicate scale status and the type of weight value displayed.
Setup Mode
Most of the procedures described in this manual require the indicator to be in setup mode including configuration
and calibration.
To enter setup mode, remove the large fillister head screw from the enclosure backplate. Insert a small nonconductive tool into the access hole and press the setup switch once. The indicator displays
Test Mode
T est mode provides a number of diagnostic functions for the 320IS indicator. Like setup mode, test mode is entered
using the setup switch (Section 7.8 on page 51).
2 320IS Installation Manual
CONFIG.
1.5 Front Panel Keypad
kg
Gross
Net
lb
Count
T
Note
The 320IS has LED annunciators, a keypad, and normal mode key functions, Table 1-1 details the function of each
key in different display modes.
The symbols shown above the keys (representing up, down, enter, left, right) describe the key functions assigned in
setup mode. In setup mode, the keys are used to navigate through menus, select digits within numeric values, and
increment/decrement values. See Section 3.2.3 on page 19 for information about using the front panel keys in setup
mode.
Figure 1-1. 320IS Front Panel
Display Mode
Key Normal Setup Te st Count
Turn the indicator on or off
Return gross weight
display to zero
Toggle between gross, net
and piece count mode
Press to enter an auto tare
or keyed tare
Toggle between primary
and secondary units
Print using GFMT Move right (horizontally) Print Print using CFMT
SERIAL, PFORMT, DIG IN and ALGOUT menu functions require fiber optics communications with
I/O module to operate.
Move up (vertically)/Increment
value/Exit (top level only)
Move down (vertically)/ Decrement
value
Enter Enter Perform a piece count
Move left (horizontally)/ Previous
Table 1-1. Indicator Display Key Functions
Exit N/A
N/A
Move left
(horizontally)
Toggle between gross, net
and piece count mode
Select a sample size
Introduction 3
1.6 LED Annunciators
0
The 320IS display uses a set of eight LED annunciators to provide additional information about the value being
displayed (see Figure 1-1 on page 3):
LED Annunciators
Gross
Net
Count The Count annunciator is lit to show that the indicator is in piece count mode.
lb lb/kg – indicate the units associated with displayed value: lb=pounds, kg=kilograms. Two units of
kg
Table 1-3 shows which annunciators are used for all combinations of configured primary and secondary units. For
example:
•If the primary unit is pounds (lb) and the secondary unit is kilograms (kg), the
kg for secondary units.
•If the primary unit is pounds (lb) and the secondary unit is short tons (tn), the
kg for secondary units. There is no LED for short tons, so the kg LED is used as the secondary units
annunciator.
•If the primary unit is short tons (tn) and the secondary unit is pounds (lb), the
(tn), and kg is lit for secondary units (lb). Because there is no LED for short tons, the lb and kg LEDs are used
as primary and secondary units annunciators.
See Section 3.3.2 on page 22 for more information about configuring primary and secondary display units.
Gross/Net – indicates whether the displayed weight is a gross or net weight
Center of Zero – gross weight is ±0.25 graduations of zero, lights when the scale is zeroed
Standstill – scale is at standstill or within the specified motion band, tare functions and printing, can only be
done when the standstill symbol is lit
Tare Acquired – indicates that a tare value has been entered
measurement can be chosen to toggle between.
The displayed units can also be set to ounces (oz), short tons (tn), metric tons (t), grams (g), or they can be
disabled. A user-defined unit can also be set as secondary unit by declaring a conversion factor in the
setup menu. The lb and kg LED’s function as primary and secondary units annunciators for some
combinations of primary and secondary units. If neither primary nor secondary units are lb, kg, oz, or g, the
lb annunciator is lit for primary units, kg for secondary units.
Table 1-2. LED Annunciators
lb LED is lit for primary units,
lb LED is lit for primary units,
lb LED is lit for primary units
Primary Unit
lb lb / lb lb / kg lb / kg lb / kg lb / kg lb / kg lb / kg
kg kg / lb kg / kg kg / lb kg / lb kg / lb kg / lb kg / lb
oz kg / lb lb / kg lb / kg lb / kg lb / kg lb / kg lb / kg
tn kg / lb lb / kg lb / kg lb / kg lb / kg lb / kg lb / kg
t kg / lb lb / kg lb / kg lb / kg lb / kg lb / kg lb / kg
g kg / lb lb / kg lb / kg lb / kg lb / kg lb / kg lb / kg
none kg / lb lb / kg lb / kg lb / kg lb / kg lb / kg lb / kg
lb kg oz tn t g none
Table 1-3. Unit Annunciators, Primary/Secondary LEDs Used For All Configurations
4 320IS Installation Manual
Secondary Unit
1.7 Front Panel Navigation
Move Up and
Down (vertically)
Enter
Move Left and
Right (horizon-
T
Default value Value Value
When moving through values below the first menu level, press to return to the level above.
Press or to move to the next parameter on the level below.
Value
1st Level
Parameter
2nd Level
Parameter
1st Level
Parameter
2nd Level
Parameter
When editing numeric values, press or to change th e
digit selected. Press or to incr ement or decrement the
value of t he selected digit, or use t he numeric keypad.
Pr ess to save the value entered and return to the level above.
0 0 0 0 0 0
Figure 1-2. Front Panel Key Functions in Setup Mode
Four front panel keys are used as directional keys to navigate through the menus in setup mode (see Figure 1-2).
UNITS () and PRINT ( ) keys scroll left and right (horizontally) on the same menu level; ZERO () and
The
GROSS/NET ( ) move up and down (vertically) to different menu levels. The TARE key ( ) serves as an enter key
for selecting parameter values within the menus. A label above each of these keys identifies the direction provided
by the key when navigating through the setup menus.
Figure 1-3. Setup Mode Menu Navigation
To select a parameter, press or to scroll left or right until the desired menu group appears on the display, then
press to move down to the sub-menu or parameter desired. When moving through the menu parameters, the
default or previously selected value appears first on the display.
To change a parameter value, scroll left or right to view the values for that parameter. When the desired value
appears on the display, press to select the value and move back up one level. To edit numerical values, use the
navigation keys to select the digit and to increment or decrement the value or use the numeric keypad.
Figure 1-4. Editing Procedure for Numeric Values
Introduction 5
1.8 Indicator Operations
0
Note
T
Basic 320IS operations are summarized below.
1.8.1 Toggle Gross/Net Mode
Press to toggle the display mode between gross and net. If a tare value has been entered or acquired, the
net value is the gross weight minus the tare. annunciator is lit when a tare value is currently stored in memory .
1.8.2 Toggle Units
Press to switch between primary and secondary units. The appropriate units LED is lit.
1.8.3 Zero Scale
1. In gross mode, remove all weight from the scale and wait for .
2. Press . annunciator lights to indicate the scale is zeroed.
1.8.4 Acquire Tare
1. Place container on scale.
2. When is lit, press . The indicator switches to net mode.
1.8.5 Remove Stored Tare Value
1. Remove all weight from the scale and wait for the annunciator.
2. When is lit
, press . The indicator switches to
gross mode, indicating the tare value has been
removed.
1.8.6 Print Ticket
Requires optional I/O Module (PN 72721).
When is lit, press to send data to the serial port. must be lit to print.
6 320IS Installation Manual
2.0 Installation
CAUTION
Important
WARNING
Junction
Box
(Optional)
AC Power
Supply
(Intrinsically
Safe Output)
FM-Approved
Load Cells
(up to 4–350Ω)
Battery
(Optional)
I/O Module
(Optional)
Battery
Charger
(Optional)
Load Cell
Input
Fiber Optic
VDC 115/230VAC
This section describes installation of load cells, power supply, fiber optics, and ferrite bead for the 320IS indicator.
Use a wrist strap to ground yourself and protect components from electrostatic discharge (ESD) when
working inside the indicator enclosure.
It is mandatory to return the 320IS to Rice Lake Weighing Systems for circuit board level service.
Component level repair, excluding board-swapping, is not permitted on Factory Mutual Approved
equipment by anyone other than the manufacturer.
2.1 Unpacking and Assembly
Immediately after unpacking, visually inspect the 320IS to ensure all components are included and undamaged.
The shipping carton should contain the indicator with attached tilt stand, this manual, and a parts kit. If any parts
are missing or were damaged in shipment, notify Rice Lake Weighing Systems and the shipper immediately. See
Table 2-5 on page 15 for parts kit.
2.2 Enclosure Disassembly
The indicator enclosure must be opened to connect cables for load cells, communications, and power.
Before opening the unit, ensure the power is disconnected from the power outlet.
1. Place the indicator face-down on an anti-static work mat.
2. Remove the screws that hold the backplate to the enclosure body.
3. Lift the backplate away from the enclosure and set it aside.
2.3 Hazardous Area Installation of the 320IS
The following information is provided to help the installer with the correct installation of the 320IS system. See
Figure 2-1 below for a diagram of a typical intrinsically safe system.
Figure 2-1. Intrinsically Safe System Diagram
Installation 7
2.3.1 Power Supply to Indicator
WARNING
Note
Note
Do not, under any circumstances, connect or disconnect the DC wire from the indicator while the AC
power is applied to the power supply. This will cause the power supply fuse to blow.
The indicator should be powered by an FM-approved Rice Lake power supply or alternatively from an external
battery pack. The power requirements of the 320IS are as follows:
•Minimum input voltage: 5.8 V
•Maximum input voltage: 7.9 V
•Peak current consumption: 190 mA
•Average input current (with four load cells): 140 mA
The DC power cable should be attached to connector CN1. Care must be taken to wire CN1 with the correct DC
polarity. See Section 2.4 on page 9 for information on cabling through metal cord grips.
CN1 Pin Function Wire Color
1 + Voltage (5.8 – 7.9 V) Green 2 Ground (V–, Common) Brown
Table 2-1. DC Power Supply Connections
A separate conduit system is recommended for installation. The type suggested for this application is 3/4" rigid
steel conduit with pull boxes located at required intervals. The conduit provides additional noise protection for the
low-level signals, while automatically complying with the requirements for two-inch separation between
intrinsically safe circuits and other electrical cables. Conduit seals are necessary where a gas tight seal is required
between hazardous area and safe area.
2.3.2 AC Power Wiring
Standard units are powered by an F.M. approved power supply. We recommend the 100–240 VAC into RLWS ISEPS-100-240 Intrinsically safe DC output power supply (PN 72713).
See the IS-EPS-100-240 Power Supply Instruction Sheet (PN 79820) for information on wiring and power
specifications.
2.3.3 Battery Option
The optional battery pack provides an intrinsically safe battery that can replace the power supply. The battery is
approved for use in hazardous environments and limited use operations such as bench scales and platform scales. A
low battery error message will display to indicate that the battery needs to be recharged. Always charge the battery
overnight. The yellow indicator light will remain on until the battery is charged at about 70%, at which point the
indicator light will turn green and the charger will switch to float charge mode. Once the light turns green, the
battery requires another 3 hours on float charge before the battery is fully charged.
To keep battery at full capacity, it is recommended to leave the battery connected to the charger, in float
charge mode, until ready to use. The battery can remain on the charger in float charge mode indefinitely
without damaging the battery. See Battery Charging Instruction Sheet (PN 96567) for instructions on charging
the battery.
Load Cell Size Quantity of cells Operating Time
350 load cell 1 40 - 50 hours
4 35 - 40 hours
700 load cell 1 45 - 55 hours
4 40 - 50 hours
8 320IS Installation Manual
Table 2-2. Estimated Battery Operating Times
While connected to the DC battery pack with the indicator off, the 320IS still draws a small amount of current
that will shorten battery run time. To preserve battery life, disconnect the battery when not in use.
2.4 Cable Connections and Installation
Note
WARNING
Note
The following sections contain information on cable connections and installation for the 320IS.
Intrinsically safe cables are specified by control drawing. All cables must have appropriate internal inductance
and capacitance. Cable lengths are based on group classifications.
Figure 2-2. Metal Cord Grip
Before connecting the AC power to the power supply:
1. Determine the length of AC power cord necessary to reach from the AC power panel to the power supply
where it is mounted.
2. Cut the AC power cord to that length. If mounting the I.S. power supply in a hazardou s area, all AC power
must be routed through approved conduit, where necessary make allowances in length of the conduit.
3. Install the AC power cord but do not hook up to the AC power.
Do not, under any circumstances, connect or disconnect the DC wire from the indicator while the AC
power is applied to the power supply. This will cause the power supply fuse to blow.
4. Determine the length of the DC power cord necessary to reach from the AC power supply to the 320IS
Plus indicator and add 7" to that length.
5. Cut the DC power cord to that length.
2.4.1 Braided Power Cable Connection with Ferrite Core
Use the following procedure for connecting braided power cable with the ferrite core:
1. If using the ferrite core, carefully remove 7 in of the outer blue insulation and 6.5 in of braid from the
cable. If not using the ferrite core, go to Section 2.4.2.
2. Remove the reducing gland and metal sleeve from the center cord grip of the indicator. Place them on a
work surface.
3. Remove the cap and reducing gland from the 320IS parts kit.
The cap and reducing gland from the parts kit have larger holes. Do not confuse these parts with the parts
removed from the cord grip of the indicator.
4. Take the metal sleeve (from step 2) and insert it into the reducing gland taken from the parts kit.
5. Place the domed cap and reducing gland that were removed from the 320IS cord grip, into the parts kit (to
be used as spares).
6. Thread the DC cable through the domed cap, then through the reducing gland/metal sleeve combination.
7. Lower the reducing gland assembly so that the end of the metal sleeve is at the edge of the insulation and
fold the braid over the metal sleeve (Figure 2-2). Trim the braid if necessary.
8. Trim the white wire back to match the end of the braid.
9. Tin the green and brown wire ends.
10. Thread the cable through the cord grip stem.
Chassis ground is made through the braid compressed between the metal sleeve and the cord grip stem.
Installation 9
11. Lower the domed cap onto the cord grip stem and tighten until a small swelling of the rubber of the
Note
Note
reducing gland appears between the domed cap and cable (see Figure 2-3).
Figure 2-3. Proper Cord Grip Compression
12. Thread the green an d brown wires two times through the ferrite core from the parts kit. See Figure 2-4 as
an example picture.
13. Connect the green and brown wires to the connector for CN1, observing polarities.
CN Pin 1 Function Color
1 + Voltage (5.8 - 7.9) Green 2 Ground (V-, Common) Brown
Table 2-3. DC Power Supply Connections — CN1
14. Plug the connector onto CN1.
15. Connect the AC power.
2.4.2 Braided Power Cable Connection Without Ferrite Core
Use the following procedure for connecting a braided power cable without a ferrite core.
1. If not using a ferrite core, carefully remove 3 in of outer blue insulation and 2.5 in of braid from the cable.
2. Remove the domed cap, reducing gland and the metal sleeve from the center cord grip of the indicator.
Place them on a work surface.
3. Remove the domed cap and reducing gland from the 320IS parts kit.
The domed cap and reducing gland from the parts kit have larger holes. Do not confuse these parts with the
parts removed from the cord grip.
4. Take the metal sleeve (from step 2) and insert it into the reducing gland taken from the parts kit.
5. Place the domed cap and reducing gland that were removed from the 320IS cord grip, into the parts kit (to
be used as spares).
6. Thread the DC cable through the domed cap, then through the reducing gland/metal sleeve combination.
7. Lower the reducing gland assembly so that the end of the metal sleeve is at the edge of the insulation and
fold the braid over the metal sleeve (Figure 2-2). Trim the braid if necessary.
8. Trim the white wire back to match the end of the braid.
9. Tin the end of the green and brown wires.
10. Thread the cable through the cord grip stem.
Chassis ground is made through the braid compressed between the metal sleeve and the cord grip stem.
11. Lower the domed cap onto the cord grip stem and tighten until a small swelling of the rubber of the
reducing gland appears between the domed cap and cable (see Figure 2-3).
12. Connect the green and brown wires to the connector for CN1. Observe polarity. See Table 2-3.
13. Plug the cable into CN1.
14. Connect the AC power.
10 320IS Installation Manual
2.4.3 Braided Load Cell Cable Connection
Note
Note
Note
Use the following procedure for connecting braided load cell cable:
If Using 6 Wire Load Cell Cable
1. Carefully remove 8 in of outside insulation and 7 1/2'' of braid from the load cell cable.
2. Remove the metal domed cap, reducing gland and metal sleeve from the left metal cord grip. Place them on
a work surface.
3. Remove the reducing gland and metal domed cap from the 320IS parts kit.
These have a larger hole than those removed from the cord grip — do not confuse them.
4. Take the metal sleeve from step 2, and insert it into the reducing gland taken from the parts kit.
5. Retain the cord grips.
6. Thread the load cell cable through the domed cap, then through the reducing gland/metal sleeve assembly.
7. Lower the reducing gland assembly so that the end of the metal sleeve is at the edge of the insulation and
fold the braid back over the sleeve (see Figure 2-2). Trim if necessary.
8. Thread the cable through the cord grip stem.
Chassis ground is made through the braid compressed between the metal sleeve and the cord grip stem.
9. Lower the domed cap onto the cord grip stem and tighten until a small swelling of the rubber of the
reducing gland appears between the dome cap and the cable (see Figure 2-3).
10. Thread the load cell cable through the ferrite core, from the parts kit, twice. Keep the ferrite core as close to
the backplate as possible (see Figure 2-4).
If Using 4 Wire Load Cell Cable
1. Carefully remove 8" of outside insulation and 7 1/2" of braid from the load cell cable.
2. Remove the metal domed cap and reducing gland from cord grip, place them on a work surface.
3. Thread the load cell cable through the domed cap, then through the reducing gland/metal sleeve assembly.
4. Lower the reducing gland assembly so that the end of the metal sleeve is at the edge of the insulation and
fold the braid back over the sleeve (see Figure 2-2). Trim if necessary.
5. Thread the cable through the cord grip stem.
Chassis ground is made through the braid compressed between the metal sleeve and the cord grip stem.
6. Lower the domed cap onto the cord grip stem and tighten until a small swelling of the rubber of the
reducing gland appears between the domed cap and the cable (see Figure 2-3).
7. Thread the load cell cable through the ferrite core, from the parts kit, twice. Keep the ferrite core as close to
the backplate as possible (see Figure 2-4).
Figure 2-4. Ferrite Core Wire Wrap
Installation 11
2.4.4 Foil Load Cell Cable Connection
Note
Load cell
connector
Power cable connector
Green = +Voltage
Brown = Return
125mA fully –
encapsulated
fuses
F1 & F2
Blue optical
output
Black optical
input
Ferrite cores
Chassis
ground
Sense jumpers
J1 & J2
Use the following procedure for connecting foil load cell cable:
1. Carefully remove 8 in of insulation and 7 1/2'' of foil from cable.
2. Remove domed cap, reducing gland and metal sleeve from cord grip and place them on the cable (see
Figure 2-2).
3. Thread the load cell cable through the domed cap, then through the reducing gland metal sleeve assembly.
4. Lower reducing gland metal sleeve assembly to edge of insulation and wrap foil over metal sleeve of
reducing gland leaving the silver side out.
5. Thread the cable through the cord grip stem.
Chassis ground is made through the foil compressed between the metal sleeve and the cord grip stem.
6. Lower the domed cap onto cord grip stem.
7. Tighten until a small swelling of the rubber between the domed cap and the cable builds (see Figure 2-3).
8. Thread wires through ferrite core two times. Keep the ferrite as close to the backplate as possible (see
Figure 2-4).
9. Wire cable to connector CN3.
2.4.5 Load Cells
To attach cable from a load cell or junction box, use six-position connector in parts kit. See Section 2.4 on page 9
for information on cabling through metal cord grips.
Wire the load cell cable from the load cell or junction box to connecto r CN3 as shown in Figure 2-6. If using 6-wire
load cell cable (with sense wires), remove jumpers J1 and J2 before installing connector CN3. For four-wire
installation, leave jumpers J1 and J2 on.
12 320IS Installation Manual
Figure 2-5. Cabl e Co n nections
When connections are complete, reinstall connector CN3 on the board and use two cable ties to secure the load cell
1 2 3 4 5 6
CN3
-Excitation
-Sense
-Signal
+Signal
+Sense
+Excitation
Optical Fiber
Locking Nut
Portioning Foot
Housing
Lens
Mounting Hole
Device
LED
cable to the inside of the enclosure.
Figure 2-6. CN3 Load Cell Connections
Pin Function
1 -Excitation
2-Sense
3-Signal
4+Signal
5+Sense
6 +Excitation
• For six-wire connections, remove jumpers J1 and J2.
• For four-wire connections, leave jumpers J1 and J2 on.
Table 2-4. CN3 Pin Assignments
2.5 Fiber Optics Installation
The 320IS is equipped with a duplex fiber optic port for communicating with an I/O Module located outside the
hazardous area. This is the only communications channel of the indicator. The indicator communicates with
external devices through the optional I/O Module’s physical interfaces (RS-232, RS-422, RS-485, Current Loop)
and provides analog and digital I/O functions such as setpoint relays and analog outputs.
The fiber optics port is located on the indicator CPU board (see Figure 2-5).
2.5.1 Assembling Fiber Optics Connectors
Use the following steps for assembling the fiber optic connectors of the 320IS:
1. Cut off the ends of the fiber optic cable (PN 74000) with a single-edge razor blade or hot knife (PN 85548).
Try to obtain a precise 90º angle.
2. Insert the fiber through the locking nut and into the connector until the core tip seats against the internal
micro-lens.
3. Screw the connector locking nut down to a snug fit, locking the fiber in place.
4. Secure fiber with 3'' nylon cable ties in parts kit and 3/4'' square nylon mounts.
Figure 2-7. Fiber Optics Connector
Installation 13
2.6 Enclosure Reassembly
Important
Setup switch access screw
Fillister head screws
10
9
8
7
4
3
1
2
5
6
Torque pattern
Load cell connection cord grip
DC power cord grip
Fiber optics
cord grip
Ground lug
LH
*4
5
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1. Position the backplate over the enclosure.
2. Reinstall the backplate screws. Use the torque pattern shown in Figure 2-8 to prevent distorting the
backplate gasket. Torque screws to 15 in-lb (1.7 N-m).
Torqued screws may become less tight as the gasket is compressed during torque pattern, therefore a
second torque is required using the same pattern and torque value.
14 320IS Installation Manual
Figure 2-8. 320IS Enclosure Backplate
Figure 2-9. 320IS CPU Board
Part No. Description Part No. Description
45043 4 in. W/No. 8 Ground Wire 14626 8–32NC Hex Kep Nut 16892 Earth Ground Label 19538 1.25 x 1 Slotted Black Post 15627 PG–9 Metal Lock Nut 91852 PG–9 Metal Cord Grip 15626 PG–9 Black Cord Grip 82432 125 mA Encapsulated Time–Lag Fuse 50962 PCN–9 Black Nut 72916 Backplate 45042 SS Bonded Sealing Washer, #8 14862 8–32NC x 3/8 Screw 39037 Backplate Gasket 68216 Rice Lake Nameplate 42640 1/4 – 28NF x 1/4 Screw 44676 Bonded Sealing Washer, 1/4" 29635 SS Tilt Stand 68403 1/4 – 20 Two-Prong Black Knob 15144 1/4 x 1 x 1/16 Nylon Washer 100345 Reconditioned/Exchange 320IS
Table 2-5. Hardware Replacement List
Installation 15
2.7 Control Drawings
16 320IS Installation Manual
Installation 17
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