Rice Lake CW-90 User manual

CW-90/90X
Checkweigher
Firmware Version 1.07
Technical Manual
PN 105942 Rev EJuly 18, 2019

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
© Rice Lake Weighing Systems ● All Rights Reserved i
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 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Keypad Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 Tare Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.6 Bar Graph LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Leveling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Making Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Enclosure Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5 Load Cell Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6 Cable Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.6.1 Stripping Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.6.2 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.6.3 Digital I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.7 Enclosure Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.8 Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.9 Battery Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.10 Installing Option Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.11 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.0 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Menu Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.1 Alpha/Numeric Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Audit Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Setup Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4.1 Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.2 FEATUR Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.4.3 FEATUR Menu, REGULA / INDUST Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4.4 Serial, PFORMT, DIG I/O, VERS Submenus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.5 Test Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.6 Time and Date Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.7 ACCUM Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.8 BRIGHT Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.9 ID Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.0 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.1 Front Panel Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.1.1 Five-Point Linearization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.1.2 Rezero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.2 EDP Command Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.3 Revolution Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4 More About Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4.1 Adjusting Final Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

CW-90/90X Checkweigher
ii Visit our website www.RiceLake.com
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars
5.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.1 Range Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.1.1 Value Set: Keyed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.1.2 Value Set: Push . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.2 Target Weight Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.2.1 Value Set: Keyed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.2.2 Value Set: Push . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.3 Target Percent Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.3.1 Value Set: Keyed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.3.2 Value Set: Push . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.4 IDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.4.1 Setting an ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.4.2 Using a Stored ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.4.3 WeighVault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.5 Negative Checkweighing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.0 Serial Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.1 The Serial Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.1.1 Key Press Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.1.2 Reporting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.1.3 Clear and Reset Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.1.4 Parameter Setting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.1.5 Normal Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.1.6 Unique Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.2 Custom Stream Formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.0 Print Formatting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.1 Print Formatting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.2 Customizing Print Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.2.1 Using the EDP Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.2.2 Using the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.2.3 Using Revolution III® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.0 WLAN Option Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.1 WLAN Card Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
9.0 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.1 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.2 Using the XE EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
9.3 Status Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.3.1 Using the P EDP Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.3.2 Using the ZZ EDP Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.4 Continuous Output (Stream) Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.5 Digital Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.5.1 DIGFLx Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.5.2 DFSENS and DFTHRH Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.5.3 Setting the Digital Filter Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9.5.4 Audit Trail Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9.6 Regulatory Mode Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
9.7 Updating CW-90/90X Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.0 CW-90/90X Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
10.0 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Contents
© Rice Lake Weighing Systems ● All Rights Reserved iii
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.
11.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

CW-90/90X Checkweigher
iv Visit our website www.RiceLake.com
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 1
1.0 Introduction
This manual is intended for use by qualified service technicians responsible for installing and servicing the CW-90/90X
checkweighing scale.
Manuals can viewed or downloaded from the Rice Lake Weighing Systems website at www.RiceLake.com
Warranty information can be found on the website at www.ricelake.com/warranties
1.1 Safety
Safety Signal Definitions:
Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. Includes
hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided, could result in serious injury or death. Includes
hazards that are exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided, could 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.
General Safety
Do not operate or work on this equipment unless this manual has been read and all instructions are understood.
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.
Failure to heed could 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 operate without all shields and guards in place.
Do not step on the unit.
Do not jump on the scale.
Do not use for purposes other then weight taking.
Do not place fingers into slots or possible pinch points.
Do not use any load bearing component that is worn beyond 5% of the original dimension.
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.
Before opening the unit, ensure the power cord is disconnected from the outlet.
Keep hands, feet and loose clothing away from moving parts.
DANGER
WARNING
CAUTION
IMPORTANT
WARNING

CW-90/90X Checkweigher
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1.2 Overview
The CW-90/90X is a high-speed digital weight indicator and scale base programmed to compare weight readings with
predetermined tolerance limits defining an ACCEPT band.
If the current weight reading is within the acceptable range, the green ACCEPT LED is illuminated. If the current weight reading
is less than the acceptable range, one or more of the red UNDER segments is illuminated. If the current weight reading is
greater than the acceptable range, one or more of the yellow OVER segments is illuminated.
Features include:
• Large 8'' LED display with UNDER, ACCEPT, and OVER bands
• Full numeric keypad (CW-90 only)
• Four configurable digital inputs/outputs
• Two independent communication ports, a full duplex and an unidirectional active 20 mA current loop
1.3 Operating Modes
The CW-90/90X has two modes of operation:
Weigh Mode
Weigh mode is the production mode of the indicator. The indicator displays the gross or net weight, depending on whether a
tare has been entered. LED annunciators indicate the type of weight value.
Menu mode
Most of the procedures described in this manual, including configuration and calibration, require the indicator to be in Menu
mode. To enter:
• With the Audit jumper in the ON position, press , AUDIT displays.
• With the Audit jumper in the OFF position, remove the large fillister head screw from the bottom of the enclosure. Insert
a small non-conductive tool into the access hole to press the setup switch to enter Menu mode.

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 3
Figure 1-1. Front Panel (CW-90 Shown)
1.4 Keypad Functions
Function
1Power – turns the unit on/off only if the jumper is set to SW; if jumper is off, the power cord is used to turn the unit on/off
2ID – selects a particular over/under/tare/units register set to be retrieved and used
3Target – used to acquire a weight value and assign it as the desired target value
4Enter – accept entries and move down in Menu mode
6Keypad – enter values directly (CW-90 only)
7Clear – backspace on entries (CW-90 only)
8Tare – performs predetermined Tare functions depending on the mode of operation selected in the TAREFN parameter, see Section 3.4.1 on
page 17; view a stored tare, see Section 1.5 on page 4
9Print – sends on-demand serial information out the serial port, provided the conditions for standstill are met; PRINT displays during prints
10 Units – switches the weight display to an alternate unit, defined in the Setup menu; conversions of the weight reading, the Tare value, the
Over and Under values occur when the unit of measure is changed
NOTE: When working in lb/oz, any entered values need to be entered in ounces. This applies when entering over, under, target, and
tare values.
11 Zero – sets current gross weight to zero, provided the amount of weight to be removed or added is within the specified zero range and the
scale is not in motion; the zero band is defaulted to 1.9% of full scale, but can be configured for up to 100% of full scale;
1.9% is required for Legal for Trade applications
12 Under – displays the current under tolerance value, or allows setting the current under tolerance value
13 Over – displays the current over tolerance value, or allows setting the over tolerance value
14 Menu – enters Menu mode, allowing configuration if the Audit jumper is in the ON position; used as Escape in menu mode
15 Tare LED – indicates a tare has been acquired and stored
Preset Tare LED – indicates a preset tare weight has been keyed in or entered via the EDP serial port
16 Net LED – indicates weight is displayed in net mode (gross weight minus a tare weight)
17 Gross LED – indicates weight is displayed in gross mode (or Brutto in OIML mode)
18 Center of Zero – while in Gross mode, indicates the current displayed weight reading is within +/-0.25 display divisions of the acquired zero,
or is within the center of zero band; in Net mode, it indicates the current net weight reading is within +/-0.25 display divisions of the center of
net zero
NOTE: A display division is the resolution of the displayed weight value, or the smallest incremental increase or decrease that can
be displayed or printed.
19 Display – weight display area
20 Bar Chart – see Section 1.6
21 Percent LED– value is displayed as percent
22 Unit LED’s – weight unit being displayed; kg, g, lb, oz
Table 1-1. Keypad Functions
G/B
N
Gross/Brutto
Net
1
2
3
45
7
8
910
11
12
13
6
14
18
17
16
15
22
CW90
19
20
21

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1.5 Tare Recall
When a stored tare is displayed, the gross and net annunciators are turned off and the PT annunciator is lit. To display a stored
tare:
1. Press .
2. Press . The tare value is displayed for 10 seconds. If there is no tare in the system, nothing will display.
1.6 Bar Graph LEDs
The bar graph LEDs provide a quick way of determining if a container is too heavy (OVER), too light (UNDER) or within an
acceptable weight range (ACCEPT).
Figure 1-2. Bar Graph LEDs
The UNDER and OVER lights can be enabled to act as a graph or to appear as one solid bar. They can also be disabled so
there are no lights. This is done using the Feature menu in Section 3.4.2 on page 22.
Red Segments
Indicates the container weighs less than the lowest acceptable value. The left most red segments indicate the container weight
is far below the acceptable weight band (greatly under); the rightmost segments indicate the container weight is almost in the
acceptable weight band, but still under (slightly under). Illuminating the center segments indicates middle-ground, or moderately
under.
Green Segment
Indicates an acceptable value and the container weight is within the actual acceptable band of weight limits.
Yellow Segments
Indicates the container weighs more than the highest acceptable value. The right most yellow segments indicate the container
weight is far above the acceptable weight band (greatly over); the leftmost segments indicate the container weight is almost in
the acceptable weight band, but still over (slightly over). Illuminating the center segments indicates middle-ground, or
moderately over.
ACCEPT
UNDER OVER
Greatly Under
Moderately Under
Slightly Under Slightly Over
Moderately Over
Greatly Over
Acceptable Weight

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 5
2.0 Installation
This section contains instructions on unpacking and assembly, leveling, making power connections, load cell wiring, wiring
standard serial port, optional network communications, wiring optional digital outputs, optional backup battery operation, board
diagrams, and power-up sequence.
Do not pick up the scale by the spider assembly which supports the platter, it may damage the load cell. Lift the
scale from under the base to move it.
If the rear panel of the indicator is removed see Section 2.7 on page 9 for installation procedure.
2.1 Unpacking and Assembly
The indicator head and support column or stand are shipped detached from the scale platform. Remove all components from
the shipping carton.
The indicator head and scale platform are joined by the load cell cable. This cable is correctly wired to the load
cell terminal in the indicator. Do not pull on the connections at either end of the cable.
Figure 2-1. Mounting Column to Scale Platform
1. If mounting the head onto a column, remove the platter from the scale platform and set aside.
2. Invert the platform to access the column mounting holes on the rear and bottom of the platform.
3. Position the column over the four mounting holes.
4. Install two 1/4-20 x 3/4'' cap screws with lock washers in mounting holes on bottom side of the platform.
5. Install two 1/4-20 x 1-3/4'' cap screws, lock washers, and column supports in the holes on rear of platform.
6. Install coupling nuts, counter bored end first, onto threaded stem of rubber feet.
7. Install feet onto bottom side of the column.
8. Turn the CW-90/90X upright and replace the platter on the platform.
9. Attach indicator to the column with the two knobs and nylon washers provided. Position nylon washers between
indicator enclosure and column mounting holes.
IMPORTANT
IMPORTANT
Indicator
Column
Column Support
Lock Washer
Cap Screw
1/4-20NC x 3/4''
Lock Washer
Cap Screw
1/4-20NC x 1 3/4''
Coupling Nut
Foot

CW-90/90X Checkweigher
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2.2 Leveling
Set the CW-90/90X in an area that is level and free of vibrations and air currents. Adjust the four corner feet on the base and
refer to the bubble level on the inside frame. The base should not rock and the feet should have solid contact with the surface.
If using a column, adjust the two column feet until they make solid contact with the support surface.
Ensure the nut on each foot’s bolt is secured flush against the scale base.
2.3 Making Power Connections
The power source used for the CW-90/90X must be properly grounded to an acceptable earth ground. If the indicator is
remotely mounted, the platform must be separately grounded from the chassis ground screw located on the bottom of the
platform. Connect this screw with 18 gauge wire to the same earth ground system as the AC power source. Failure to ground
the base may cause static buildup and incorrect weights.
Ensure the CW-90 is installed near an easily accessible power outlet to allow for quick disconnect in case of
emergency.
2.4 Enclosure Disassembly
The indicator enclosure must be opened to connect cables for load cells, communications, and digital inputs/outputs.
Before opening the unit, ensure the power cord is disconnected from the power outlet.
1. Place the indicator face-down on an anti-static mat.
2. Remove the screws securing the backplate to the enclosure body.
3. Lift the backplate off the enclosure and set it aside.
2.5 Load Cell Wiring
On all complete units (indicator head and base), the load cell has been wired to the indicator’s CPU load cell terminal at the
factory. If just the indicator head has been purchased, the load cell will need to be wired.
Wire the cable to the CPU board’s J1 connector as shown in Table 2-1. Leave any excess cable outside of the indicator head
during installation
If using a 4-wire connection, set JP1 and JP2 to ON. If using a 6-wire connection, set JP1 and JP2 to OFF.
Specifics
Wires connecting to J1, J2, J3, or J4 should adhere to the following specifications:
J1 Pin Function
1 + Signal
2 - Signal
3 + Sense
4 - Sense
5 + Excitation
6 - Excitation
Table 2-1. J1 Pin Assignments
Wire Range Wire Strip Length
28~12 AWG stranded or solid wire 3/16'' ~ 1/4'' (5~6 mm)
Table 2-2. Wire Specifications for Connectors
Note
WARNING
WARNING
Note

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 7
2.6 Cable Grounding
Except for the power cord, all cables routed through the cord grips should be grounded against the indicator enclosure.
1. Use the lockwashers, clamps, and kep nuts provided in the parts kit to install grounding clamps on the enclosure studs
adjacent to cord grips. Install grounding clamps only for cord grips used; do not tighten nuts.
2. Route the cables through the cord grips and the grounding clamps to determine the cable lengths required to reach
the cable connectors.
3. Mark the cables to remove insulation and shield. See Section 2.6.1.
4. Finish installation using cable mounts and ties to secure cables inside of indicator enclosure.
2.6.1 Stripping Cables
Foil Insulated Cable
Figure 2-2. Foil Insulated Cable
1. Strip the insulation and foil from the cable 1/2'' (15 mm) past the grounding clamp.
2. Fold the foil shield back on the cable where the cable passes through the clamp.
3. Ensure the silver (conductive) side of the foil is turned outward for contact with the grounding clamp.
Braided Shielding
Figure 2-3. Braided Shielding
1. Strip the insulation and braided shield from a point just past the grounding clamp.
2. Strip another 1/2'' (15 mm) of the insulation to expose the braid where the cable passes through the clamp.
Load Cell Cables
Cut the shield wire just past the grounding clamp. Shield wire function is provided by contact between the cable shield and the
grounding clamp.
Silver
side out
Shield wire (cut)
Cut insulation here
for foil sheilded cables
Length of foil before
folding back on
cable insulation
Braid
Braided Cable
Cut insulation here

CW-90/90X Checkweigher
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2.6.2 Serial Communications
Port 1 supports full duplex RS-232 communications only; Port 2 provides either active 20 mA output or duplex RS-232
transmission.
1. Wire serial communications cables to J2, which is Port 1 (5-wire RS-232 port) and J3, which is Port 2
(RS-232 and 20 mA).
2. Use cable ties to secure serial cables to the inside of the enclosure.
3. Configure both ports using the SERIAL menu. See Section 3.4.4 on page 28.
2.6.3 Digital I/O
The Digital I/O can be configured as either digital inputs or digital outputs as determined by the DIO menu. See Section 3.4.4 on
page 28). The inputs are active (on) with low voltage (0 VDC) and can be driven by TTL or 5V logic without additional hardware.
Use the DIG I/O menu to configure the digital inputs. LEDs on the CPU board light when digital inputs are active.
Digital outputs are typically used to control relays that drive other equipment. Outputs are designed to sink (sync) not source,
switching current. Each output is a CMOS circuit, capable of sinking (syncing) 24 mA when active. Digital outputs are wired to
switch relays when the digital output is active (low, 0 VDC) with reference to 5 VDC supply. LEDs on the CPU board light up
when the digital outputs are active.
Figure 2-4. Digital I/O Lights and Screw Locations
Connector Pin Signal Port Connector Pin Signal Port
J2 1 Ground 1 J3 1 20mA+ 2
2 Ground 2 Ground
3 Tx 3 Tx
4 Rx 4 Rx
5 DTR 5 CTS
6 RTS 6 RTS
Table 2-3. J2 and J3 Pin Assignments
Connector Pin Signal
J4 1 +5V
2 Ground
3 DIG I/O 1
4 DIG I/O 2
5 DIG I/O 3
6 DIG I/O 4
Table 2-4. J4 Pin Assignments (Digital I/0)
DIG I/O
LEDs

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 9
2.7 Enclosure Reassembly
Once the cabling is complete align the backplate with gasket to the enclosure and secure with the screws. Use the torque
pattern in Figure 2-5 to prevent distortion. Torque to 15 in/lbs (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.
Figure 2-5. Tightening Sequence
2.8 Board Removal
To replace the CPU board, use the following procedure:
1. Disconnect power to the indicator. Remove backplate as described in Section 2.4.
2. Disconnect power supply cable from connector J9.
3. Disconnect wires from connectors J1, J2, J3 and J4.
4. There are two boards: the CPU board and the keypad display board. Remove the five screws connecting the CPU
board, then lift the board out of the enclosure.
To replace the CPU board, reverse the above procedure. Be sure to reinstall cable ties to secure all cables inside the indicator
enclosure.
2.9 Battery Replacement
Risk of explosion if battery is replaced with incorrect type. Dispose of batteries per manufacturer instructions.
The lithium battery on the CPU board maintains the real-time clock and protects data stored in the system RAM when the
indicator is not connected to AC power. Data protected by this battery includes time and date, IDs, and configuration
information. If any data is lost, the indicator configuration can be restored from the PC. Watch for low battery warning on the
LCD display and periodically check battery voltage on CPU board. Batteries should be replaced when low battery warning
indicator comes on or when battery voltage falls to 2.2 VDC. Life expectancy of the battery is 10 years. Use Revolution to store
a copy of the configuration before attempting to replace battery.
For best results, replace the battery while in Weigh Mode and with AC power applied. Use care not to bend the battery retaining
spring.
Note
1
6
9
42
5
7
10 Torque
Pattern 8
3
CAUTION

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2.10 Installing Option Cards
Option cards are not hot-pluggable. Disconnect power cord entirely before installing option cards.
Ethernet port is not suitable for connection to circuits used outside the building.
Option cards are subject to lightning/power faults.
Each option card is shipped with installation instructions specific to that card. For specific instructions on the WLAN card, refer
to Section 8.0 on page 62. The general procedure for all option cards is:
1. Disconnect power cord from the indicator.
2. Remove the backplate as described in Section 2.4.
3. Install the plastic standoffs in the standoff holes.
4. Carefully align the option card connector with the J5 connector on the CPU board.
5. Press down firmly to seat the option card in the CPU board connector.
6. Make connections to the option card as required. Use cable ties to secure loose cables inside the enclosure.
7. When installation is complete, reassemble the enclosure as described in Section 2.7 on page 9.
Figure 2-6. CW-90/90X CPU Board
If the RESET button on the CPU board is pressed, the indicator will perform a reboot.
Jumper Description
JP1/JP2 Jump excitation to sense. If using a 4-wire load cell cable, leave JP1 and JP2 on. If using a 6-wire load cell cable, take JP1 and JP2
off. Default is ON
JP3/JP4 Used when upgrading firmware. The jumpers should be on when upgrading firmware and off when the update is complete
PC Power control. If the jumper is set to SW, POWER key can be used to turn the unit on/off; f set to ON, the unit will power on when
plugged in and can only be powered off by unplugging
JMP1 If set to Audit ON, calibration and configuration can be accessed through the front keypad; if set to Audit OFF, calibration and config-
uration can only be accessed by removing the screw on the base of the unit and pressing the Setup switch with a screwdriver.
Default is Audit ON
Table 2-5. Jumper Descriptions
CAUTION
IMPORTANT
J1 J2/Port 1 J3/Port 2 J4JP1
JP2
JP3
JP4
Port 3
J5 COMM
OPTION
Standoff
Holes
JMP1
Note

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 11
2.11 Replacement Parts
Figure 2-7. CW-90/90X Parts Illustration
Item No. Part No. Description Qty
1 - Enclosure 1
2 - Mounting Plate, Display 1
3 14621 Nut, Kep 6-32NC HEX 2
4 85202
85203
Power Cord Assembly, 120VAC
Power Cord Assembly, 230VAC
1
5 68600 Cord Grip, PG11 1
6 68599 Seal Ring, Nylon PG11 1
7 68601 Nut, PG11 1
8 58983 Cable Grip, SL-7 w/Nut 3
9 16892 Label, Earth Ground 1
10 15134 Washer, Lock NO 8 Type A 3
11 14626 Nut, Kep 8-32NC HEX 3
12 45043 Wire, Ground 4in W/No. 8 1
13 104914
104915
Overlay, Membrane Switch (CW-90)
Overlay, Piezo (CW-90X)
1
14 105850 Bracket, Power Supply 1
Table 2-6. Replacement Parts
13
30
31
22
21
8518
17
15
34 28
27
19 16
26 24
25
9
7
6320
4
10
12 11
10
10
11
11
1
33
29
2
14
32 23

CW-90/90X Checkweigher
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15 76556 Power Supply, Switching 1
16 14822 Screw, Mach 4-40NC x 1/4 6
17 14825 Screw, Mach 4-40NC x 1/4 4
18 105976 Cable Assembly, Power Supply 1
19 102354 CPU 1
19 105741 Display 1
20 69291 Battery, 3v Coin Lithium 1
21 42640 Screw, Mach 1/4-28NF X 1/4 1
22 44676 Washer, Bonded Sealing 1
23 Backplate 1
24 84388 Gasket, Backplate 420 1
25 88733 Vent, Breather Sealed 1
26 88734 Nut, Breather Vent 1
27 14862 Screw, MACH 8-32NC x 3/8 4
28 45042 Washer, Bonded Sealing SST 4
29 29635 Stand, Tilt SST 1
30 103988 Washer, Nylon .52 ID 2
31 103610 Knob, Black 1/4-20 2
32 53307 Label 1
33 53308 Label 1
34 16861 Label, Warning High 1
-- 105945 Parts Kit, CW-90/90X 1
-- 107476 Bench Scale Foot
-- 105555 Coupling Nut for Feet and Overload
Stops
Scale Capacity Load Cell Part Number
5 lb 107174
10 lb 107174
25 lb 107175
50 lb 107176
100 lb 107177
Table 2-7. CW-90X Load Cells
Scale Capacity Load Cell Part Number
5 lb 107756
10 lb 107757
25 lb 107758
50 lb 107759
100 lb 107760
Table 2-8. CW-90 Load Cells
Item No. Part No. Description Qty
Table 2-6. Replacement Parts

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 13
Figure 2-8. CW-90/90X Dimensions
11.24
9.50
10.02
10.02
4x .281
.38
3.75
2.01 6.00
3.00
3.75
3.12
6.00
8.57
4.00

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3.0 Configuration
This section guides the set up and configuration of the CW-90/90X checkweigher. The indicator is defaulted at the factory with
the audit trail jumper (JMP1) in the ON position, allowing configuration access by pressing .
If the CW-90/90X has been sealed for Legal for Trade, the setup switch needs to be pressed to gain access to the menus. The
setup switch is located on the bottom of the indicator.
Pressing displays the Audit menu selection.
3.1 Menu Navigation
The keys are used to navigate through the menus (Figure 3-1).
Figure 3-1. Front Panel Key Functions in Menu Mode
During calibration, the ENTER key acts as a data entry confirmation key. It also acts as an EXECUTE key and accepts
the value upon successful calibration. On the CW-90, the ZERO or CLR key can be used for a backspace.
3.1.1 Alpha/Numeric Entry
When adding or editing data:
• Use or to edit a flashing digit.
• Use or navigate to through digits.
• Press to accept the data and return to the next menu item.
• Press to exit configuration and return to weighing or navigate to the EXIT menu and press .
On the CW-90 the numeric keys can be used to insert a digit to the right of the blinking digit.
Figure 3-2. Menu Mode Navigation Structure
Menu Function
AUDIT Audit Trail – displays the legally relevant (LR) firmware version, configuration count, and calibration count
CALIBR Calibrate – calibrate the scale
SETUP Setup – access setup options: features, serial output, print format, digital inputs and outputs, and displays the version number
TEST Test – performs a basic test on the A/D, digital inputs and outputs, communication ports, RAM, and keypad
EXIT Exit – exits configuration mode and returns to the weigh screen
T&D Time & Date – view and change time and date
ACCUM Accumulator – displays the current accumulator value
BRIGHT Brightness – adjusts display intensity on a scale from 0 (dimmest) to 7 (brightest)
ID ID – setup or edit IDs
Table 3-1. Menu Parameter List
OVER UNDER ID ENTER
TARGET
Move UP/
Increment
Value
Move DOWN/
Decrement
Value
BackspaceEnter/Exit
Configuration
Menu
Enter VALUE/
Move DOWN
Move LEFT/
Previous
Move RIGHT/
Next
Note
OVER
UNDER
ID
TARGET
ENTER
ENTER
Note
AUDIT
Only displayed if
turned on
from Setup menu
Only displayed if
turned on
from Setup menu
CALIBR SETUP TEST EXIT IDACCUM BRIGHTT&D