Rice Lake 181881 User manual

Load Ranger
2.4 GHz Radio Frequency Communication
Wheel Weigh Pad System
Technical Manual
PN 214194 Rev A
July 22, 2022

© 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

Revision History
© Rice Lake Weighing Systems ● All Rights Reserved i
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.
Revision History
This section tracks and describes the current and previous manual revisions for awareness of major updates and when the
updates took place.
Revision Date Description
A July 22, 2022 Initial release with Ai-1 Indicator Software 07.01.00 and Loader version 2.08; wheel weigh pad firmware
05.03.00
Table i. Revision Letter History

Contents
Load Ranger Wheel Weigh Pad System
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
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 FCC Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Available Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Choosing the Weighing Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Positioning the Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Correct Platform Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4.1 Wireless Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4.2 Wired Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5 Weighing of Objects or Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.0 Setup and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Wheel Weigh Pad Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.1 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.2 Display Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.3 Assign ID Numbers, Turn on RF Radio and Assign Channel Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Ai-1 Indicator Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.1 Setup Ai-1 and Pair Wheel Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Standard Ai-1 Indicator Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.1 Zeroing Wheel Weigh Pads with Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.2 Tare Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.4 Weighing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4.1 Wheel-Weighing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4.2 Axle-Weighing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.5 Battery Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.6 Input Texts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.7 Vehicle Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.7.1 Create Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.7.2 Modify Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.7.3 Delete Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.7.4 Select Vehicle on Primary Weigh Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.7.5 Deselect Vehicle on Primary Weigh Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.7.6 Temporary Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.7.7 Alphanumeric Search. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.7.8 Index Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.8 Print Formats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.8.1 Default Print Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.9 Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.9.1 Change Setpoint Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.0 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.1 Wheel Weigh Pad Technical Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.1.1 Keyboard Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Contents
© Rice Lake Weighing Systems ● All Rights Reserved iii
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.
4.1.2 Default Wheel Weigh Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.1.3 Wheel Weigh Pad Metrological Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1.4 View Wheel Weigh Pad Metrological Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1.5 Overload Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1.6 Unit Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.2 Indicator Technical Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.2.1 Configure Touch Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.2.2 Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.2.3 Date and Time Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.2.4 Printout Headings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.2.5 Shortcuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.3 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.3.1 Center of Gravity Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.3.2 Indicator Metrological Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.3.3 Overload Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.0 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.1 Calibrate with Wheel Weigh Pad Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.1.1 Complete Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.1.2 Zero Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.2 Calibrate with Ai-1 Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.2.1 Standard Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.2.2 Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.1 Operation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.2 Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.3 Accessory Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.3.1 Display Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.3.2 Transport Wheels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.3.3 Aluminum Ramps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.4 Board Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.5 Wiring Schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.5.1 Load Cell Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.5.2 Power Supply Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.5.3 RS485 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.6 Calibration Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.7 Messages and Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.7.1 Programming Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.8 Frequently Asked Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.0 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.1 Wheel Weigh Pad (RF-MD, RF-WD, RF-XWD) Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.2 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.2.1 Wheel Weigh Pad (RF-MD, RF-WD, RF-XWD) Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.2.2 Load Ranger Ai-1 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.3 Replacement Load Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.4 2.4 GHz Radio Frequency (RF) Module Retrofit Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.4.1 Wheel Weigh Pad Retrofit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.4.2 Ai-1 Indicator hardware Retrofit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.4.3 Update Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Load Ranger Wheel Weigh Pad System
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
7.4.4 Wheel Weigh Pad and Ai-1 Indicator Setup and Pairing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.0 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 1
1.0 Introduction
Load Ranger wheel weigh pads offer an adaptable, high accuracy solution for vehicle weighing. With unmatched performance,
Load Ranger wireless weigh pads are able to capture wheel or axle weights, either individually or in sets of up to 14 pads.
Besides vehicles, Load Ranger wheel weigh pads can weigh objects and structures with several support points of an array of
sizes and capacities. Load Ranger wheel weigh pads can be paired with the Ai-1 touchscreen indicator and thermal printer to
provide an all-in-one solution for weight summing and ticket printing.
Manuals and additional resources are available from Rice Lake Weighing Systems at www.ricelake.com/manuals
Warranty information can be found at www.ricelake.com/warranties
1.1 Safety
Safety Definitions:
DANGER: 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.
WARNING: 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.
CAUTION: Indicates a potentially hazardous situation that, if not avoided, could result in minor or moderate injury.
IMPORTANT: 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.
WARNING
Failure to heed could result in serious injury or death.
Do not disassemble or tamper with the platforms.
All connections must be made by following applicable standards in the installation area and environment.
Do not install in environments at risk of explosion (except for specific versions).
Do not allow minors (children) or inexperienced persons to operate this equipment.
Ensure the pads and path to enter them is clear of all people and equipment.
Do not overload the platforms beyond the maximum declared load.
Do not use solvents or aggressive substances to clean the platform or weight indicator.
Do not pour liquids on the weight indicator.
Avoid prolonged exposure to atmospheric agents (sun, rain, etc.).
Do not expose the instrument to heat sources.
Do not lean platforms against a wall or object. Always lay platforms flat on the ground.
Always place or anchor the weight indicator and platform on a non-vibrating surface.
Anything not specifically described in this manual is to be considered as improper use of the equipment.
All of the indicator connections must be in accordance with applicable local and state laws within the installation environment.

Load Ranger Wheel Weigh Pad System
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1.2 FCC Compliance
United States
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Canada
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio
Interference Regulations of the Canadian Department of Communications.
Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux appareils
numériques de la Class A prescites dans le Règlement sur le brouillage radioélectrique edicté par le ministère des
Communications du Canada.
1.3 Available Models
Figure 1-1. Load Ranger Models
1.4 Features
Wheel Weigh Pad Features
• Equipped with 2.4 GHz radio frequency (RF) module to communicate with Ai-1 indicator
• Aluminum alloy loading platform with positioning bands and bubble level
• Integrated wheels, handles and ramps
• Internal NiMH rechargeable battery with 40 hours of battery life
• IP67 rating
Figure 1-2. Wheel Weigh Pad Features
Loading Surface
1 ft 10 in x 1 ft 4 in
(564 x 400 mm)
Loading Surface
2 ft 6 in x 1 ft 6 in
(750 x 450 mm)
Loading Surface
3 ft 1 in x 1 ft 8 in
(950 x 500 mm)
RF-XWD
RF-WD
RF-MD
Transport and
Positioning Wheels
Positioning Bands
Loading Surface
Ramps
Handle
Built-in Display
Bubble Level

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 3
Ai-1 Indicator Features
• ABS transport case – 1 ft x 1 ft 6 in x 7 in (325 mm x 460 mm x 170 mm)
• Backlit touchscreen display
• Internal rechargeable battery with 10 hours of battery life
• Thermal printer
• Real time clock
• Permanent data storage
• microSD card slot
• 24-bit A/D converter, up to 2300 conversions per second
• DB9 RS232 serial port
Figure 1-3. Ai-1 Indicator Features
Multiple Storage
Compartments
Input Connections
DB9 Serial Port
ABS Case
RF Antenna
Thermal Printer
Power Input
Power Button
Touchscreen Display

Load Ranger Wheel Weigh Pad System
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1.5 Accessories
Aluminum Ramps
The optional aluminum ramps are used to make it easier for a wheel to move onto and off of the platform. This is ideal for
vehicles with small diameter wheels or for vehicles/aircraft moved with towing equipment.
Figure 1-4. Aluminum Ramps
Figure 1-5. Aluminum Ramp Dimensions
Part No. Description Dimensions (W x L x H)
181881 Aluminum Ramp for Load Ranger MD Models 1 ft 7.66 in x 5.91 in x 1.18 in (500 x 150 x 30 mm)
181882 Aluminum Ramp for Load Ranger WD Models 2 ft 3.56 in x 5.91 in x 1.18 in (700 x 150 x 30 mm)
181883 Aluminum Ramp for Load Ranger XWD Models 2 ft 11.43 in x 5.91 in x 1.18 in (900 x 150 x 30 mm)
Table 1-1. Aluminum Ramp Dimensions
5.91 in
(150 mm)
1.18 in
(30 mm)
5.91 in
(150 mm)
1 ft 7.66 in, 2 ft 3.56 in or 2 ft 11.43
(500 mm, 700 mm or 900 mm)

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 5
2.0 Installation
Follow the procedures in the section to install a Load Ranger system.
2.1 Choosing the Weighing Area
Load Ranger wheel weigh pads can be installed on most types of surfaces. For the best results, Rice Lake Weighing Systems
recommends:
• An area that is large enough to allow vehicles to easily maneuver under safe conditions
• A minimum length twice that of the longest vehicle to be weighed
• Flat and level surfaces with a slope of less than 0.5%
• Use on hard surfaces, concrete or asphalt with a hardness of at least 1423 lb/in2 (100 kg/cm2)
• The surface under the weighing area must withstand concentrated loads of at least 1.5 times the maximum capacity of
the wheel weigh pad
• Environments where the temperature is between 14°F and 104°F (-10°C and 40°C)
• Always use the same direction of travel
IMPORTANT: Weighing area recommendations are important for accurate weighing and to avoid damage to the weigh pads.
Avoid areas at risk of flooding and areas used for common transit. The wheel weigh pads are not designed to be used as
road surfaces and must only by used at the time of weighing according to the conditions stated in Section 2.3 on page 7.
Figure 2-1. Weighing Area Characteristics
2.2 Positioning the Platforms
1. Use the built-in wheels to position and adjust the platforms.
Figure 2-2. Move Platform with Wheels
< 0.5%
Keep your back straight when lifting the platforms.

Load Ranger Wheel Weigh Pad System
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2. Position the platforms directly in front of the wheels of the vehicle to be weighed.
Figure 2-3. Moving Platforms in front of Vehicle Wheels
CAUTION: Do not place hands or feet under the platform when positioning them. Wear protective gloves and shoes when
installing the wheel weigh pad.
3. The display must be facing outwards in order to correctly transmit the wireless weighing data.
Figure 2-4. Display Orientation
WARNING: Before positioning the platforms, ensure that the vehicle’s engine is off, with the first gear engaged and the
parking brake activated.
Figure 2-5. Correct Platform Loading Position
WARNING: Only position platforms when the vehicle is stopped. Never stand in front or behind the vehicle when
positioning the platforms.
1. 2. 3.

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 7
2.3 Correct Platform Use
Refer to the transit area and the positioning bands for the proper transit path and weighing location.
Avoid transit over the display to preserve correct operation and to prevent accidental scratches.
Figure 2-6. Transit Areas and Positioning Bands
Always position the wheel weigh pads so the transit path onto and off of the platform fully utilizes the ramps.
Figure 2-7. Use Ramps Fully
IMPORTANT: Failure to heed the following could result in equipment damage.
•Do not weigh vehicles carrying liquids when using an axle-weighing system.
•The type and maintenance state of the vehicle being weighed can effect the weighing performance.
•Always keep the same direction of travel once the system has been optimized.
2.4 Applications
The Load Ranger weigh pads can be arranged to serve multiple applications. The adjustment from one scenario to another is
made quickly and easily with the wireless and portability features of the Load Ranger system. This section highlights several of
the arrangements available.
2.4.1 Wireless Setup
A wireless system allows for weighing with up to 16 connected wheel weigh pads per Ai-1 indicator.
Two Platforms
Applications include weighing axles of the vehicle individually or trailers with only one axle.
Figure 2-8. Two Platform Application
Transit Area Positioning Bands

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Three Platforms
Applications include weighing small planes, three-wheeled vehicles or trailers with a support pin.
Figure 2-9. Three Platform Application
Four Platforms
Applications include weighing two-axle vehicles, trailers, containers or other items with four support points.
Figure 2-10. Four Platform Application
The size and capacity of the third platform can
differ from those of the other platforms

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 9
Five Platforms
Applications include weighing two-axle trailers with a support pin. When weighing both directions, a sixth platform can be used.
Figure 2-11. Five Platform Application
Six Platforms
Applications include weighing three-axle vehicles or structures with six support points.
Figure 2-12. Six Platform Application
The size and capacity of the fifth platform can
differ from those of the other platforms
Optional sixth platform

Load Ranger Wheel Weigh Pad System
10 Visit our website www.RiceLake.com
Wireless Setup Connection Procedure
1. Assign ID numbers and channels to the wheel weigh pads (Section 3.1.3 on page 13).
2. Assign channel number to Ai-1 Indicator (Section 3.2.1 on page 16).
3. Pair the Ai-1 indicator with the wheel weigh pads (Section 3.2.1 on page 16).
2.4.2 Wired Setup
A wired system allows for weighing with two to four connected wheel weigh pads.
The data communication port is located on the underside of the wheel weigh pad. For the RF-MD the port is located at the
handle end of the platform and is the port further from the edge. For the RF-WD and RF-XWD the port is located at the end
opposite of the platform handles.
Figure 2-13. Recommend Cable Placement
Wire Setup Connection Procedure
NOTE: The data communication port uses a 5-pin connector and the power connection port uses a 4-pin connector.
No parameters need to be changed to switch from a RF to an RS485 connection.
1. Assign channel numbers and ID numbers to the wheel weigh pads (Section 3.1.3 on page 13).
2. Pair the Ai-1 indicator with the wheel weigh pads (Section 3.1.3 on page 13).
3. Turn off the wheel weigh pads and the Ai-1 indicator.
4. Connect RS-485 cables to the wheel weigh pads data communication ports.
5. Connect free ends of each RS-485 cable to one of the Ai-1 indicator’s communication ports.
NOTE: The wheel weigh pads can be connected to any of the RS-485 ports on the Ai-1 indicator. The pad ID assigned to the
wheel weigh pad dictates the scale number and it does not need to match the Ai-1 indicator channel number.
6. Turn on all of the wheel weigh pads.
7. Turn on the Ai-1 indicator.   briefly displays on wheel weigh pads (represents the assigned pad ID
number).  then displays on the wheel weigh pads and they are ready for use.
Cable Positions
IMPORTANT: Do not pass cables in transit areas, under the load cells or under the central box of the platform.
Figure 2-14. Cable Position
= Position of the cable

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 11
2.5 Weighing of Objects or Structures
The Load Ranger wheel weigh pads can be moved in any position directly below the point in which the structure must be
weighed. Follow the weighing procedure below to weigh objects or structures correctly.
NOTE: Avoid sharp maneuvers, rapidly lowering the load and accidental crashes into or onto the wheel weigh pads.
Weighing Procedure
1. Lower the load to an approximate height of 4 in (10 cm) from the ground.
Figure 2-15. Lower Load
2. Position the load over the platforms.
Figure 2-16. Position Load
3. Place the load slowly onto the platforms.
Figure 2-17. Place Load
IMPORTANT: Do not set the load on the wheel weigh pad display. Always position the displays of the platforms towards the
outside of the structure being weighed in order to correctly transmit the weight reading data.
4 in (10 cm)

Load Ranger Wheel Weigh Pad System
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3.0 Setup and Operation
The Load Ranger wheel weigh pads can be operated independently or with an Ai-1 indicator. The following section provides an
overview and procedures for both types of applications.
3.1 Wheel Weigh Pad Display
Figure 3-1. Wheel Weigh Pad Display
3.1.1 Key Functions
• Press to turn on the wheel weigh pad display.
• Press and hold until -Off- displays to turn off the wheel weigh pad display.
• Press and hold until info displays to scroll through the wheel weigh pad information (2 displays after -Off-).
• Press to display the current platform ID number of the wheel weigh pad.
• Press and hold until Zero displays to zero the weight within 2% of the maximum capacity.
• Press to display and edit the current pin number associated with the wheel weigh pad.
• Press and hold until tare displays to tare the current weight on the wheel weigh pad.
• Press to display the RF status of the wheel weigh pad.
• Press and hold to turn a x10 multiplier on and off.
• Press to display a diagnosis of the current mode and to test each key by pressing each one when prompted.
• If the automatic key-lock is active, press then , to unlock the keypad.
Item No. Description
1 Model label location (an identical label is located on the underside of the platform)
2 Display – Six digit display; 1'' characters
3 NUM – Toggles between weight and ID number; functions as a Zero key; used as an Up arrow to navigate menus or to edit a value
4 SET NUM – Display and edit pin number; functions as a Tare key; used as a Down arrow to navigate menus or to edit a value
5 SET MODE – Displays RF status; functions as a x10 multiplier; used as a Right arrow to edit a value
6 DIAG – Displays diagnosis and initiates a key test; used as an Enter key to accept an entry at a prompt or when editing a value
7 Power – Turns display on/off; displays wheel weigh pad information; used as Cancel within the menu structure
Table 3-1. Wheel Weigh Pad Keys
MODE
SET
DIAG
NUM
SET
NUM
DATA
1
2
3 4 5 6 7

Setup and Operation
© Rice Lake Weighing Systems ● All Rights Reserved 13
3.1.2 Display Features
The wheel weigh pad displays the current weight on the platform and applicable annunciators. When paired with the Ai-1
indicator, a wheel weigh pad displays the assigned platform ID number (PLX) instead of the weight.
Figure 3-2. Wheel Weigh Pad Display
NOTE: Internal battery charge level:
Fully charged
– Medium charge
Low charge
 displays prior to the instrument automatically switching off. Charge the battery for at least 12 hours with the
supplied charger after initial startup.
Unstable weight indicator.
Zero weight indicator.
3.1.3 Assign ID Numbers, Turn on RF Radio and Assign Channel Numbers
1. Press to turn on the first wheel weigh pad.
2. Press during startup. TeCH flashes, then CAL displays.
3. Press repeatedly until SERiAL displays.
4. Press to enter the Serial menu. iD displays.
5. Press to enter the ID settings.
6. Press or to increase or decrease the selected digit and press to move between the digits to enter the
pad ID number.
NOTE: The first Pad ID number must be 01 and the remaining pad ID numbers must increment in ascending numeric order.
Example: 01, 02, 03. Do not configure two pads with the same ID number. See Figure 3-3 on page 14 for number positioning
7. Press . Con.rf displays.
8. Press repeatably until radio displays.
9. Press . RF displays.
10. Press or until On displays.
11. Press . r.chan briefly displays.
12. Use arrows to enter a channel number.
NOTE: The default channel number is 27. The wheel weigh pad channel number must match the indicator channel number
it will pair with. The Ai-1 indicator supports channels 00 - 38. If using multiple groups of indicators and wheel weigh pads,
the channel numbers must be unique for each group.
13. Press . OK briefly displays then Baud displays.
14. Press until wheel weigh pad resets.
15. Repeat procedure for all wheel weigh pads in the system.
lb

Load Ranger Wheel Weigh Pad System
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.
Figure 3-3. Wheel Weigh Pad Positioning
3.2 Ai-1 Indicator Display
Figure 3-4. Ai-1 Indicator – Primary Weigh Screens
Item No. Description
Axle-Weighing Primary Weigh Screen
1 Zero and tare annunciators
2 Unstable annunciator
3 Time – Press within cell to adjust the date and time
4 Gross weight cell – Press within cell to make full screen and press again to return; Gross weight unit annunciator displays
5 Scale information
6 Gross weight value
7 Battery annunciator; plug annunciator displays when indicator is charging
8 Scale annunciator – S = whole scale weight displayed, 1 = platform ID 1 weight displayed, 2 = platform ID 2 weight displayed, etc.
9 Wheel and axle weight display cell – Only displays two axles at a time; Press within cell to select platforms for scale
10 Vehicle cell – Press within cell to select a vehicle
11 Axles cell – Displays total weight of each axle
12 Tare weight cell – Press within cell to manually enter a tare weight; tare weight unit annunciator displays
13 Tare weight value
14 Total weight cell – Total weight unit annunciator displays
15 Total weight value
16 Zero key – Press to zero based on the scale annunciator
17 Indicator message
18 Tare key – Press to tare the current weight of all wheel weigh pads; scale annunciator must be on S (whole scale weight displayed)
19 Programmable key 1 – Set to M+ by default
Table 3-2. Ai-1 Indicator – Primary Weigh Screen Descriptions
123153
254466
GROSS
VEHICLE
TOTALTARE
2
1
O O
lb lb
O
lb
Max 6600lb d=1lb Min 20lb (1~2)
08:32
1:
2:
3:
4:
5:
6:
7:
AXLES (lb): N. 0
0
0
0
LOAD THE SCALE
M +TOTAL PRINT >>
S
1
3
2
4
7
6
8
9
10
11
12 13
16 17 18
19 20 21
15
22
5
14
GROSS
AXLES (lb)
GRAVITY CENTRE
TARE O
lb
O
lb
Max 19800lb d=10lb Min 200lb (1~6)
08:32
LOAD THE SCALE
M +TOTAL PRINT >>
S
VEHICLE
x=------ m
y=------ m
2 0
4 0
6 0
1 0
3 0
5 0
0
0
0
23
24
25