Rice Lake Intrinsically Safe User Manual

320IS

Intrinsically Safe Digital Weight Indicator

Version 2.1

Installation Manual

74612 Rev B

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

Safety ....................................................................................................................................................... 1

1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Factory Mutual Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.4 Front Panel Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.5 LED Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.6 Indicator Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6.1 Toggle Gross/Net Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6.2 Toggle Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6.3 Zero Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.4 Acquire Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.5 Remove Stored Tare Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.6 Acquire Parts Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.7 Display Part Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.8 Print Ticket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.0 Installation ................................................................................................................................... 8

2.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Enclosure Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3 Hazardous Area Installation of the 320IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3.1 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. 9

2.3.2 Power Supply to Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3.3 AC Power Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.3.4 Battery Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4 Cable Connections and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4.1 Braided Power Cable Connection with Ferrite Core. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.4.2 Braided Power Cable Connection Without Ferrite Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.4.3 Braided Load Cell Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.4.4 Foil Load Cell Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.5 Load Cells. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.5 Fiber Optics Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.5.1 Assembling Fiber Optics Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.6 Enclosure Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.7 Control Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.0 Configuration ............................................................................................................................. 20

3.1 Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2 Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.1 Revolution Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.2 EDP Command Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.3 Front Panel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.3 Menu Structures and Parameter Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.3.1 Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3.2 Format Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Rice Lake Weighing Systems is an ISO 9001 registered company.

Specifications subject to change without notice.

Version 2.1, Rev. A October 2014

Contents i

3.3.3 Calibration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Rice Lake continually offers web-based video training on a growing selection of product-related topics at no cost. Visit www.ricelake.com/webinars.

3.3.4 Serial Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.3.5 Program Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.3.6 Print Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.3.7 Analog Output Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.3.8 Version Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.0 Calibration ................................................................................................................................. 33

4.1 Front Panel Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.2 EDP Command Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.3 Revolution® Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.0 EDP Commands.......................................................................................................................... 36

5.1 The EDP Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5.1.1 Key Press Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5.1.2 Reporting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.1.3 The RESETCONFIGURATION Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.1.4 Parameter Setting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.1.5 Normal Mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.2 Saving and Transferring Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.2.1 Saving Indicator Data to a Personal Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.2.2 Downloading Configuration Data from PC to Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6.0 Print Formatting ......................................................................................................................... 43

6.1 Print Formatting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6.2 Customizing Print Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6.2.1 Using the EDP Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6.2.2 Using the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6.2.3 Using Revolution® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

7.0 Appendix A................................................................................................................................. 46

7.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

7.1.1 Displayed Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

7.1.2 Using the XE EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

7.2 Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

7.2.1 Using the P EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

7.2.2 Using the ZZ EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

7.3 Continuous Output (Stream) Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

7.4 ASCII Character Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

7.5 Conversion Factors for Secondary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7.6 Digital Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.6.1 DFSENS and DFTHRH Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.6.2 Setting the Digital Filter Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.7 Analog Output Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

7.8 Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

8.0 Appendix B................................................................................................................................. 57

8.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

8.2 Enclosure Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

8.3 Installation of the I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

8.3.1 AC Wiring/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

8.3.2 EDP and Printer Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

8.3.3 RS-232 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

8.3.4 RS-485 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

8.3.5 RS-422 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

8.3.6 20mA Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

8.4 Fiber Optics Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

8.5 Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

8.6 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

8.7 Relay Contact Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

ii 320IS Installation Manual

8.8 I/O Module Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.9 320IS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

320IS Limited Warranty ......................................................................................................................... 67

Contents iii

iv 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 20 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.

Safety

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.

Safety Precautions

Do not operate or work on this equipment unless you have read and understand the instructions and warnings in this manual. Failure to follow the instructions or heed the warnings could result in injury or death. Contact any Rice Lake Weighing Systems dealer for replacement manuals. Proper care is your responsibility.

General Safety

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. Improper specification, installation, or service of this equipment could result in personal injury or property damage.

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.

320IS Installation Manual - Introduction 1

1. 1 O ve r vi e w

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 4X/IP66-rated 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 in, 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 65 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

1.2 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 Approval 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

• US standards: Class I, II, III, DIV1, Groups A-G.

320IS is declared in the following regulations:

1.3 Operating Modes

The 320IS has three modes of operation.

Normal (Primary) Mode

Normal mode is the “default” mode of the indicator. The indicator displays gross or net weights as indicated by LED annunciators (see

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 non-metal screwdriver or a similar tool into the access hole and press the setup switch once. The indicator display changes to show the word

Test Mo de

Test mode provides a number of diagnostic functions for the 320IS indicator. Like setup mode, test mode is entered using the setup switch (

2 320IS Installation Manual

Substitution of components may impair intrinsic safety.

To prevent ignition of flammable or combustible atmospheres, disconnect power before servicing.

Figure 1-1) to indicate scale status and the type of weight value displayed.

CONFIG.

Section 7.8 on page 55).

1.4 Front Panel Keypad

Gross

Net

Count

Figure 1-1 shows the 320IS LED annunciators, keypad, and normal mode key functions. Tab l e 1-1 on page 4 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 mode.

Section 3.2.3 on page 21 for information about using the front panel keys in setup

Figure 1-1. 320IS Front Panel

320IS Installation Manual - Introduction 3

Key Functions

Note

Move Up and

Down (vertically)

Enter

Move Left and

Right (horizontally)

Display Mode

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

• Move up (vertically)

• Increment value

• Exit (top level only)

• Move down (vertically) 

• Decrement value

Enter Enter Perform a piece count

• Move left (horizontally) 

• Previous

Exit N/A

N/A Toggle between gross,

net and piece count mode

Move left (horizontally) Select a sample size

Table 1-1. Indicator Display Key Functions

SERIAL, PFORMT, DIG IN and ALGOUT menu functions require fiber optics communications with I/O module to operate.



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). The UNITS ( ) and PRINT ( ) keys scroll left and right (horizontally) on the same menu level; ZERO ( ) and

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 submenu or parameter you want. When moving through the menu parameters, the default or previously selected value appears first on the display.

4 320IS Installation Manual

To change a parameter value, scroll left or right to view the values for that parameter. When the desired value

Level

Parameter

Default value

Level

Parameter

Value Value

Level

Parameter

Level

Parameter

When moving thr ough values below the ﬁrst menu level, press to r etur n to the level above. Pr ess or to move to the next parameter on the level above.

Value

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

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 (see Figure 1-4).

Figure 1-4. Editing Procedure for Numeric Values

1.5 LED Annunciators

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):

Gross

Net

Center of Zero Gross weight is ±0.25 graduations of zero. This

LED Annunciators

The Gross and Net annunciators are lit to show whether the displayed weight is a gross or net weight.

annunciator lights when the scale is zeroed

Standstill Scale is at standstill or within the specified motion

Count The Count annunciator is lit to show that the indicator

band. Some operations, including tare functions and printing, can only be done when the standstill symbol is shown.

The Tare Acquired light shows that a tare value has been entered.

is in piece count mode.

Table 1-2. LED Annunciators

320IS Installation Manual - Introduction 5

LED Annunciators

0 lb lb and kg annunciators indicate the units associated 0kg

with the displayed value: lb=pounds, kg=kilograms. Two units of 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 and secondary units annunciators for some combinations of primary and secondary units. If neither primary nor secondary units are lb, kg, oz, or

lb annunciator is lit for primary units, kg for

g, the secondary units.

lb and kg LED’s function as primary

Table 1-2. LED Annunciators

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 lb LED is lit for primary units, kg for secondary units.

• If the primary unit is pounds (lb) and the secondary unit is short tons (tn), the lb LED is lit for primary

kg for secondary units. There is no LED for short tons, so the kg LED is used as the secondary units

units, annunciator.

• If the primary unit is short tons (tn) and the secondary unit is pounds (lb), the lb LED is lit for primary units (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 24 for more information about configuring primary and secondary display units.

Secondary Unit

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

1. 6 Indicator Operations

Basic 320IS operations are summarized below.

1.6.1 Toggle Gross/Net Mode

Press the GROSS/NET key to switch the display mode from gross to net, or from net to gross. If a tare value has been

entered or acquired, the net value is the gross weight minus the tare. The

value is currently stored in memory.

1.6.2 Toggle Units

Press the UNITS key to switch between primary and secondary units. The appropriate units LED to the right of the display is lit.

Tare ( ) annunciator is lit when a tare

6 320IS Installation Manual

1.6.3 Zero Scale

Note

1. In gross mode, remove all weight from the scale and wait for .

2. Press the ZERO key. annunciator lights to indicate the scale is zeroed.

1.6.4 Acquire Tare

1. Place container on scale.

When is lit

, press the

TARE

key. The indicator switches to net mode.

3. To display the current tare value, press the DISPLAY TARE key.

1.6.5 Remove Stored Tare Value

1. Remove all weight from the scale and wait for the standstill annunciator ( ).

2. When is lit

, press the

TARE

key. The indicator switches to

gross mode, indicating the tare value has

been removed.

1.6.6 Acquire Parts Sample

1. Place empty parts container on scale.

2. Press TAR E to acquire the tare weight of the container.

3. Press GROSS/NET key to enter piece count mode.

Press the CLEAR key to exit.

4. Press the UNITS key to enter sample acquisition mode.

Addnnn displays, nnn is the sample quantity to be placed on the scale.

• Add the number of parts shown.

• Choose a different sample size. Press the SAMPLE key to scroll through the selectable sample quantities (5, 10, 20, 50, 100) or use the numeric keypad to specify a custom sample size.

• Specify a known piece weight. Press the SAMPLE key to scroll through the selectable sample quantities until the

PC WGT prompt is shown. Use the numeric keypad to enter the piece weight.

5. Once the sample quantity is on the scale, press ENTER to calibrate the indicator for counting the new parts.

6. If a sample size was specified, the indicator display shows the message –CNT– as it acquires the sample weight, then switches to count display mode and shows the part quantity.

7. If a known piece weight was specified, the display switches to count display mode immediately.

1.6.7 Display Part Weight

To view gross and net weight parts, press MODE to switch from count display mode to normal weighing mode.

To view the current piece weight while in count mode, press DISPLAY TARE key.

1.6.8 Print Ticket

Requires optional I/O Module (PN 72721).

Wait for the standstill annunciator ( ). Press the PRINT key to send data to the serial port. Standstill must be lit to print.

320IS Installation Manual - Introduction 7

2.0 Installation

CAUTION

Important

WARNING

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 19 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. Ensure power to the indicator is disconnected.

2. Place the indicator face-down on an antistatic work mat.

3. Remove the screws that hold the backplate to the enclosure body.

4. Lift the backplate away from the enclosure and set it aside.

8 320IS Installation Manual

2.3 Hazardous Area Installation of the 320IS

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

WARNING

2.3.1 The following information is provided to help the installer with the correct installation of the 320IS system.

Figure 2-1 below for a diagram of a typical intrinsically safe system.

See

2.3.2 Power Supply to Indicator

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

The DC power cable should be attached to connector CN1 (see Table 2-1). Care must be taken to wire CN1 with the correct DC polarity. See Section 2.4 on page 10 for information on cabling through metal cord grips.

Figure 2-1. Intrinsically Safe System Diagram

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.

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

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

320IS Installation Manual - Installation 9

A separate conduit system is recommended for installation. The type suggested for this application is 3/4" rigid

Note

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.

2.3.3 AC Power Wiring

Standard units are powered by an F.M. approved power supply. We recommend the 100–240 VAC into RLWS IS-EPS-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.

2.3.4 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

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

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

10 320IS Installation Manual

Before connecting the AC power to the power supply:

WARNING

Note

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 you are mounting the I.S. power supply in a hazardous 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" of the outer blue insulation and 6.5" 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 Plus 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.

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. Proper Cord Grip Compression

Figure 2-3).

12. Thread the green and brown wires two times through the ferrite core from the parts kit. See Figure 2-4 as an example picture.

320IS Installation Manual - Installation 11

13. Connect the green and brown wires to the connector for CN1, observing polarities. See Table 2-3 below.

Note

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" of outer blue insulation and 2.5" 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 Plus 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.

2.4.3 Braided Load Cell Cable Connection

Use the following procedure for connecting braided load cell cable:

If Using 6 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, 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 plus 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.

12 320IS Installation Manual

Chassis ground is made through the braid compressed between the metal sleeve and the cord grip stem.

Note

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

2.4.4 Foil Load Cell Cable Connection

Use the following procedure for connecting foil load cell cable:

1. Carefully remove 8" 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).

320IS Installation Manual - Installation 13

9. Wire cable to connector CN3.

Load cell connector

Power cable connector

Green = +Voltage



Brown = Return

125mA fully – encapsulated fuses

F1 & F2

Blue pptical output

Black optical input

Ferrite cores

Chassis ground

Sense jumpers J1 & J2

1 2 3 4 5 6

CN3

-Excitation

-Sense

-Signal

+Signal

+Sense

+Excitation

Figure 2-5. Cable Connections

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 10 for information on cabling through metal cord grips.

Wire the load cell cable from the load cell or junction box to connector 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.

When connections are complete, reinstall connector CN3 on the board and use two cable ties to secure the load cell cable to the inside of the enclosure.

Figure 2-6. CN3 Load Cell Connections

14 320IS Installation Manual

Pin Function

Optical Fiber

Locking Nut

Portioning Foot

Housing

Lens

Mounting Hole

Device

LED

Important

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-inch nylon cable ties in parts kit and 3/4-inch square nylon mounts.

Figure 2-7. Fiber Optics Connector

2.6 Enclosure Reassembly

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.

320IS Installation Manual - Installation 15

Figure 2-8. 320IS Enclosure Backplate

Setup switch access screw

Fillister head screws

Torque pattern

Load cell connection cord grip

DC power cord grip

Fiber optics

cord grip

Ground lug

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16 320IS Installation Manual

Part Number Description (Quantity) Part Number Description (Quantity)

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

Figure 2-9. 320IS CPU Board

Table 2-5. Hardware Replacement List

Part Number Description (Quantity) Part Number Description (Quantity)

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

320IS Installation Manual - Installation 17

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