Rice Lake MSI-4260 IS User manual

MSI-4260 IS
Port-A-Weigh Intrinsically Safe Crane Scale
Technical Manual
PN 173845 REV ADecember 6, 2017

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
Contents i
1.0 Introduction...................................................................................................................................................... 1
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.1 Keypad Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.2 Annunciators and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.0 Installation........................................................................................................................................................ 5
2.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2.1 Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2.2 Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2.3 Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.0 Operation.......................................................................................................................................................... 8
3.1 Navigation of Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4 Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.0 Setup............................................................................................................................................................... 10
4.1 Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.1 Set Function Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1.2 Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1.3 Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1.4 View Total. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1.5 Net / Gross . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1.6 Learn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1.7 Peak Hold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1.8 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1.9 Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Auto-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Sleep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4 Display Brightness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.5 Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.6 Total. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.7 Filter Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.8 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.9 Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.0 Calibration...................................................................................................................................................... 18
5.1 Calibration Switch Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 Standard Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3 Initial Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4 Guidelines for Capacity and Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.5 C-Cal Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.6 Calibration Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.6.1 Standard Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.7 Auto Zero Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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.

ii MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
Contents
6.0 Troubleshooting / Maintenance.................................................................................................................... 23
6.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Service Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.1 Access the Service Counters: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.3 MSI-4260 IS Port-A-Weigh Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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 1
1.0 Introduction
The MSI-4260 IS Port-A-Weigh has an established reputation as the industry standard in medium to heavy-capacity overhead
weighing and duty-cycle needs. With a proven mechanical design and advanced electronics, the MSI-4260 IS is versatile,
reliable, accurate and user friendly.
The MSI-4260 IS is designed to meet or exceed requirements of applicable ASME, ANSI, OSHA safety standards. Multiple
options and accessories are available to further enhance the performance and application versatility of the MSI-4260 IS.
This manual provides information on installation, calibration, configuration and operation of the MSI-4260 IS. The installer
should be familiar with the National Electric Code and RP 12.6 (Recommended Practice) requirements for installation of
equipment in hazardous areas (NEC Article 504, Intrinsically Safe Systems) published through the Instrument Society of
America.
Refer to the Conditions of Use in Hazardous Locations document, PN 184530, for intrinsic safety certification and classification,
specific conditions of use and system limitations and restrictions for the MSI-4260 IS.
Manuals are available for viewing and/or downloading from the Rice Lake Weighing Systems website at
www.ricelake.com/manuals
Warranty information can be found on the website at www.ricelake.com/warranties
1.1 Features
•TheMSI-4260 IS is FM Approved
• Designed to meet or exceed applicable U.S. and international safety standards
• Automatic power off conserves battery life by sensing no activity after a set number minutes and turns off the power
• Automatic sleep mode preserves the battery life by dimming the LED display after a set number of minutes of no activity
• Rugged construction throughout; The buttons are sealed and rated for over 1 million operations
• Precise high resolution (2,500 division standard and up to 10,000 possible) 24 bit A/D conversion provides world class
features and accuracy
• Five large, 1.2'' (30.5 mm) LED digits for clear weight readings from a distance; The display is always tilted down for
ease of viewing from below
• Easy to maintain: Full digital calibration assures reliable, repeatable measurements; Can be calibrated without test
weights using MSI C-Cal technology
• Selectable for kg/lb unless prohibited by Legal for Trade regulations
• Provides automatic or manual weight totalization for loading operations
• Easily customized for special applications with oversized attachments and interface hardware
• Hi speed Peak mode for wire and rope stress analysis
• Eight setpoints can be set for any in-range weight for operator alerts or process control
• ScaleCore technology provides quick and easy software updates and calibration/setup backup
• Two service counters ensure load train safety by warning the user to perform a load train safety check when the lift count
gets high or the scale has been overloaded repeatedly

2MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
1.2 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.
Do not operate or work on this equipment before reading and understanding the intrinsic safety information in the Conditions of
Use in Hazardous Locations document, PN 184530.
Do not allow minors (children) or inexperienced persons to operate this unit.
Do not stand near the load being lifted as it is a potential falling hazard. Keep a safe distance.
Do not use for purposes other than weight taking or dynamic load monitoring.
Do not use any load bearing component that is worn beyond five percent of the original dimension.
Do not use the scale if any of the components of the load train are cracked, deformed or show signs of fatigue.
Do not exceed the rated load limit of the scale, rigging elements or the lifting structure.
Do not allow multi-point contact with the hook, shackle or lifting eye of the scale.
Do not allow high torque on the scale unless it is specifically designed for high torque.
Do not make alterations or modifications to the scale or associated load bearing devices.
Do not use improperly rated or sized shackles. Use only Rice Lake Weighing Systems recommended shackles.
Do not remove or obscure warning labels.
For guidelines on the safe rigging and loading of overhead scales and dynamometers, read the MSI Crane Scale Safety and
Periodic Maintenance Manual (available at www.ricelake.com).
Keep hands, feet and loose clothing away from moving parts.
There are no user serviceable parts within the MSI-4260 IS. Any repairs must be performed by qualified service personnel only.
Removing the Warranty and Liability label compromises the FM Intrinsic Safety certification.
The MSI-4260 IS Port-A-Weigh scale has a safe mechanical overload of 200 percent and an ultimate overload of 500 percent.
Overloads greater than 50 percent could result in structural failure and dropped loads. Dropped loads could cause serious
personal injury or death.
DANGER
WARNING
CAUTION
IMPORTANT
WARNING

Introduction 3
1.3 Display
The buttons and display of the MSI-4260 IS front panel are described below.
Figure 1-1. MSI-4260 IS Front Panel
1.3.1 Keypad Functions
Key Description
Turns the MSI-4260 IS On and Off.
Used to zero out residual weight on the scale.
Removes the weight of containers, trucks or carriers and places the scale in the net weight mode.
Programmable to user selectable functions. See Section 3.0 on page 8. 
This key is defaulted to the Test function.
Table 1-1. Key Functions and Annunciators
st
ZERO TARE USER
es
POWER
TF
Sealed calibration switch
(Section 5.0 on page 18)
IP-68 rated push buttons
es
POWER
st
ZERO
TARE
T
USER
F

4MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
1.3.2 Annunciators and LEDs
Annunciator Description
Center of Zero — indicates the scale is zeroed and the weight is within 1/4d of zero.
Stable — indicates the weight has settled within the motion window (usually ±1d). When this symbol is off, the scale will
not zero, tare or totalize.
BT Low Battery — displays when 10% of battery life remains. LED blinks indicating automatic shutdown will occur.
Setpoints — user programmable set points for early overload warnings. 
Blue LED = Setpoint 1, Green LED = Setpoint 2, Red LED = Setpoint 3
TTL Total — blue LED is lit briefly, indicating the total weight is displayed.
NET Net — indicates the scale is in net weight mode. Tare weight has been subtracted from gross weight.
PK Peak — indicates the scale is in peak hold mode.
kg kg — red LED indicates weight display is in kilograms.
lb lb — red LED indicates weight display is in pounds.
x1K X1000 — blue LED is used in conjunction with the TOTAL LED, allowing weight accumulation beyond the 5-digit display
capacity.
Acknowledge — green LED is used to provide feedback to the operator that incoming remote commands have been
received. 
Also used for acknowledging successful Auto-Total operations.
The main display digits include five, 1.2'' (30.5 mm) brightness LED load display.
Table 1-2. Annunciators and LEDs
0

Installation 5
2.0 Installation
The MSI-4260ISfeatures a heavy duty, cast aluminum enclosure. It installs easily by hanging it on a crane using properly sized
shackles.
Refer to the Crane Scale Safety and Periodic Maintenance Manual (PN 153105) for safe loading and rigging
guidelines when installing the model MSI-4260 IS.
Regular maintenance inspections of the lifting system should be performed to ensure safety. Pay particular
attention for signs of stress on any element in the load train.
Use the appropriate interface hardware for the capacity of the scale.
• If the interface hardware does not fit properly, Rice Lake Weighing Systems can supply the MSI-4260 IS with oversize
lifting eyes or shackle interfaces.
• If the crane hook is too large to fit in the lifting eye with single point interface, then install the scale using adaptive rigging.
• If multiple attachments are needed, use a shackle or ring to attach the multiple lines to keep a single point attachment to
the scale.
Using an oversize shackle or hook to interface with the MSI-4260 IS can cause off center loading and stress
points that will reduce the life of the lifting eye or hook.
Single point attachments are necessary to ensure the safety and accuracy of the scale system.
2.1 Unpacking
When unpacking the MSI-4260 IS, ensure that all assembly parts are accounted for. Check the MSI-4260 IS for any visible
damage. If any parts were damaged in shipment, notify Rice Lake Weighing Systems and the shipper immediately. If the MSI-
4260 IS must be returned, it must be properly packed with sufficient packing materials. Whenever possible, use the original
carton when shipping the unit back.
2.2 Battery Pack
The MSI-4260 IS is powered by a 12V Sealed Lead Acid (SLA) rechargeable battery.
A spare battery pack is recommended to keep the MSI-4260 IS in continuous operation due to an extended battery charge time.
Only an Intrinsically Safe Battery, PN 167777, can be used with the MSI-4260 IS. This battery is incompatible
with non-Intrinsically Safe MSI products. Refer to the Conditions of Use in Hazardous Locations document, PN
184530, for intrinsic safety information on the battery.
To obtain maximum service life from the batteries they should be stored between -4°F and 122°F (-20°C and
+50°C). Stored batteries should be recharged every three months. The battery is fully charged when the status
indicator on the battery charger is flashing.
2.2.1 Battery Life
The battery life of the MSI-4260 IS depends on a number of factors:
• The brightness of the LED display and number of segments lit
• The age of the battery
• The condition of the SLA battery
In order to conserve battery life, the MSI-4260 IS includes the following features.
•Automatic Power Off Mode — senses no activity after the set amount of minutes and turns the scale off
•Automatic Sleep Mode — dims the display after a set amount of minutes of no scale activity
The MSI-4260 IS automatically turns off when the SLA battery drops to approximately 10.5V. Recharge the battery when this
happens; SLA batteries benefit from frequent recharging and can be recharged when it still has available life.
Due to the maintenance discharge imposed on the battery by the MSI-4260 IS electronics, do not store the MSI-4260 IS with
the battery inside. Remove the battery if it will not be used for more than two weeks.
Leaving a discharged battery in the scale, which has a maintenance battery drain, can result in a deep
discharged battery which will shorten its service life.
WARNING
IMPORTANT
WARNING
IMPORTANT
IMPORTANT

6MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
* If the scale is in continuous use, a fully charged spare battery is recommended. Replace the drained battery as 
close as possible to the low battery warning.
* SLA batteries that have not been deep discharged should withstand 500 to 1500 charging cycles.
* The low battery warning annunciator indicates about two to four hours of additional use before the MSI-4260 IS
turns itself off.
* If the MSI-4260 IS is not going to used again soon, remove the SLA battery to prevent deep discharge while the unit
is in storage.
2.2.2 Battery Charger
The MSI-4260 IS is shipped with a battery charger, PN 170606, designed to charge and maintain the battery. Exact charging
time will depend on the degree of discharge of the battery. A battery removed when the low battery warning first appears should
take about eight hours to fully charge.
When the battery is new, it might take significantly longer for the initial charge. It is recommended to charge a new
battery for 24 hours. It might take several charge/discharge cycles before full capacity is reached. Deep discharged
batteries will also take significantly longer to charge.
The battery charger is not certified for use in hazardous environments. The battery must be removed and
charged in a non-hazardous area. Refer to the Conditions of Use in Hazardous Locations document, PN 184530,
for intrinsic safety information.
Figure 2-1. Battery Charger Connected to Battery
The battery charger is a universal input type that is a three-stage float charger that can be left on the battery indefinitely. It is
rated for 100-240VAC, 50-60Hz. It has a tricolor LED to indicate the charging state.
• Red – charge mode
• Green – top off mode
• Blue – float (fully charged) mode
If the status light remains green when the battery is first plugged in, the battery may be defective.
Use the following steps to charge a battery.
1. Remove the battery from the MSI-4260 IS. See Figure 2-2 on page 7.
2. In a safe environment, plug the polarized connector into the jacks on the battery.
3. Connect the charger assembly to an AC power supply (86-260VAC).
Unless the battery charger is first connected to the battery before plugging it into an AC power supply, the battery
charger will be stuck in float mode and will not charge the battery. This will not cause any damage to either the
charger or the battery. The charger will work properly if it is disconnected from the AC power and then plugged into
the AC power again after waiting for 30 seconds.
4. The charge status light should turn RED indicating bulk charging.
5. Charge until the status light turns GREEN. This indicates the charger is in top off mode. The battery has sufficient
charge for use, but continuing to charge until the status light turns BLUE will ensure that the battery has a full charge.
6. The charger and battery are in float charge mode when the charge indicator turns BLUE.
Note
Note
WARNING
Charge Indicator
Red = charge mode
Green = top off mode
Blue = float mode
Note

Installation 7
When the charge cycle is complete, the battery can be left on the charger until it is needed. The charger keeps a maintenance
float charge on the battery to ensure the best possible operation times.
To obtain maximum service life from your batteries, the manufacturer suggests recharging after each 20 hours
of use. Continuous deep discharging will reduce maximum battery life cycle estimated at 2000 cycles.
2.2.3 Battery Replacement
1. Turn the MSI-4260 IS off.
2. Hold the battery cover and release the latches.
3. Slowly lower the cover while holding the battery in place.
4. Remove the battery by pulling straight back.
5. Charge the spent battery in a safe area.
6. Install a fully charged battery by plugging it in to the exposed battery jacks.
7. Close the battery cover.
8. Reset the latches. Make sure the latches are completely latched and the cover is firmly in place.
Figure 2-2. Remove Battery
Periodically, inspect the battery latches for fit. Adjust the screw latch by rotating the catch on its threads to
maintain a tight seal on the battery o-ring. The 12V Sealed Lead Acid battery can be a falling hazard. When
opening the battery hatch, be sure to hold the battery to prevent it from falling.
These batteries contain lead and should be recycled in accordance with procedures approved by state and
local authorities when their end of life is reached.
Only an Intrinsically Safe Battery, PN 167777, can be used with the MSI-4260 IS. This battery is incompatible
with non-Intrinsically Safe MSI product. The intrinsically safe battery pack can be removed in the protected
area, but must be charged in a safe environment.
2.3 Servicing
The entire scale must be shipped back to Rice Lake Weighing Systems for repair. Please contact a local dealer or Rice Lake
Weighing Systems to obtain a return material authorization (RMA). There are no user serviceable parts within the MSI-4260 IS.
All repairs are to be performed by qualified service personnel only. Removing the warranty and liability label compromises the
FM rating.
IMPORTANT
WARNING

8MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
3.0 Operation
The following sections describe the basic operation of the MSI-4260 IS.
3.1 Navigation of Menus
• If a function key does not work, it is probably because the MSI-4260 IS is not set up to support the key. For example,
if the function key is set for TOTAL, the TOTAL mode must also be set up in the Setup Menu.
• When in Setup menus, drops back one menu level. At the root menu level, the stores the changes
and returns to the weight mode.
• When in Setup menus, returns directly to the Weight Display without storing the changes.
• When in Setup menus, functions as the scroll key.
• When in Setup menus, functions as the ENTER/SELECT key.
3.2 Power
To turn on the power, press . The following will display in order:
• The LEDs will light all segments at full brightness as a display test.
• Display brightness will change to the setting determined in the Display Menu.
• The software version number will display.
•TheMSI-4260 IS is ready for use.
3.3 Zero
The zero key sets the zero reading of the scale. Press to take out small deviations in zero when the scale is unloaded.
See Section 3.4 for zeroing (taring) a package or pallet weights.
The scale digits display 0 (or 0.0 or 0.00, etc).
The backup memory in the MSI-4260 IS stores the zero reading and retains it even if the power fails.
Rules for Use:
• Works in GROSS or NET mode.
• Zeroing while in net mode will zero the gross weight causing the display to show a negative tare value.
• The scale must be stable within the motion window. The MSI-4260 IS will only zero if the stable annunciator is on
and there has been no activity of two seconds.
• The scale will accept a zero setting over the full Range of the scale (NTEP and other Legal for Trade models may
have a limited zero range). Zero settings above four percent of full scale will subtract from the overall capacity of the
MSI-4260 IS.
Example: If 100 lb on a 1000 lb scale is zeroed, the overall capacity of the scale will reduce to 900 lb, plus the
allowed over-range amount.
st
ZERO
st
ZERO
es
POWER
USER
F
TARE
T
es
POWER
st
ZERO
Note

Operation 9
3.4 Tare
Tare is used to zero out a known weight such as a packing container or pallet and display the load in NET weight.
A tare value is entered by pressing . The TARE function is defined as a Tare-In, Tare-Out operation.
The first press of stores the current weight as a tare value and then the scale subtracts the tare value from the gross
weight and changes the display to NET mode. The next press of will clear the tare value and revert the display to
GROSS mode.
To view the gross weight without clearing the tare value, program to the function NET/GROSS. 
The RF remote control has a net/gross permanently available.
To tare and display the net weight, press .
The weight reading must be stable within the motion window for the tare function to work.
The scale digits display 0 (or 0.0 or 0.00, etc) and the weight mode changes to NET.
The backup memory in the MSI-4260 IS stores the tare reading and can restore it even if power fails.
To clear the tare and revert to gross weight, press . GROSS displays.
• Only positive gross weight readings can be tared.
• The must be off indicating weight reading is stable.
• Setting or changing the tare has no effect on the gross zero setting.
• Taring will reduce the apparent over range of the scale.
Example: Taring a 100 lb container on a 1000 lb scale, the scale will overload at a net weight of 900 lb (1000-100)
plus any additional allowed overload (usually ~four percent or 9d).
• The scale stores the tare value in non-volatile memory and is restored when power is cycled.
TARE
T
TARE
T
TARE
T
USER
F
TARE
T
Note
TARE
T

10 MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
4.0 Setup
The following keys can be used when navigating through the menus while setting up the MSI-4260 IS.
• Press to exit setup without saving changes.  displays momentarily and unit enters weigh mode.
•Press while the digit is blinking to enter a decimal point.
• Press to save and go back one level. Press it again to leave the setup mode,  will display briefly when
entering weigh mode.
•Press to step back one digit and press to change the digit if a wrong value is entered.
• Press to enter or select a parameter.
• Press to scroll through the parameters.
4.1 Setup Menu
To enter into the MSI-4260 IS setup menu, press and simultaneously.
Parameters Choices Description


 Function User Key 1 – user definable key that can be programmed to one of several functions
Function User Key 2 – Not Available
 Test Display – see Section 4.1.2 on page 11
 Total – see Section 4.1.3 on page 12
 View Total – seeSection 4.1.4 on page 12
 Net/Gross – seeSection 4.1.5 on page 12
 Not Available

Peak Hold – see Section 4.1.7 on page 12
Function not available or non-functional in OIML R76 or NTEP HB44 modes

Units – see Section 4.1.8 on page 12
Function not available or non-functional in OIML R76 & 1Unit modes
 Print – see Section 4.1.9 on page 12






Auto Off Time – prolongs battery life of scale by turning power off after the set time (in minutes) that the scale is not in use
See Section 4.2 on page 13





Sleep – Time (in minutes) before unit enters the sleep mode
See Section 4.3 on page 13






LED Display Intensity – used to set the display brightness
See Section 4.4 on page 14




Setpoints 1-3 – used for warnings or process control
See Section 4.5 on page 14
Table 4-1. Setup Menu Parameter Descriptions
es
POWER
es
POWER
st
ZERO
st
ZERO
TARE
T
TARE
T
USER
F
TARE
T
USER
F

Setup 11
4.1.1 Set Function Key
The MSI-4260 IS has one user definable key ( ) on the front panel, that can be programmed to one of several functions.
To set the function key use the following steps:
1. Press and hold and .  is displayed.
2. Press . The current user key function is displayed.
3. Press the to scroll through the available functions.
4. Press when the desired function is displayed.  displays.
5. Press .
 displays, the unit exits setup and stores the settings.
Press at any time to cancel the procedure.
4.1.2 Test
To run a test, press the F key which is programmed to TEST. The display automatically scrolls through the following:
Lights all LEDs at once.
Displays  followed by the software version number.
Displays followed by the battery voltage.
Displays followed by the display counting from 00000 to 99999.
Displays followed by the C-CAL value.
Other internal tests are performed and if any test fails, an error code displays. See Section 6.1 on page 23 for information on
the troubleshooting guide.
To stop the automatic test procedure, press the F-key again within two seconds to enable a single step mode. Use the F-key to
scroll through the available test functions and to start or display the individual tests.
Press to exit individual tests, press it again to exit from the test function.






Total Mode – accumulation of multiple weighments
See Section 4.6 on page 16




Weight Filter – allows the scale to adjust to situations where there may be movement
See Section 4.7 on page 17
 

Weight Units – toggle units between pounds and kilograms
Function not available or non-functional in OIML R76 & 1Unit modes
See Section 4.8 on page 17
 

Battery Life – sets the options for standard or extended battery life.
See Section 4.9 on page 17
Parameters Choices Description
Table 4-1. Setup Menu Parameter Descriptions
USER
F
USER
F
es
POWER
TARE
T
USER
F
TARE
T
st
ZERO
Note
es
POWER
TARE
T
st
ZERO

12 MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
4.1.3 Total
Set the total parameter desired for the F-key.
1. If the unit is turned off, press and hold then press
If the unit is on, press and simultaneously.  displays.
2. Using the , scroll to .
3. Press . The currently saved total mode displays.
4. Press to scroll through the choices.
5. With choice displayed, press to select.  displays.
6. Press to save and exit to weighing mode or press to continue to another setup menu item.
The total mode must be programmed from the setup menus before the USER key will function.
4.1.4 View Total
The F-key activates the total weight display followed by the number of samples. With the total weight is displayed press ZERO
to clear.
4.1.5 Net / Gross
Switches the display between net and gross modes. Net weight is defined as gross weight minus a tare weight.
To switch between net mode and gross mode, press the F-key (set to net/gross function). This will only work if a tare value has
been established.
The operator can switch back to gross from net without clearing the tare value. Only clearing or setting a new tare will change
the tare value held before switching into gross mode.
OIML Legal for Trade units only: The NET/GROSS key is a temporary action only. The gross weight is displayed for two
seconds and then the display returns to the net mode. The only way to return to permanent gross readings is to clear the tare.
See Section 3.4 on page 9.
4.1.6 Learn
This option is not available in the Factory Mutual version of the MSI-4260 IS.
4.1.7 Peak Hold
Peak hold will only update the display when a higher peak weight reading is established.
The peak hold function uses a high speed mode of the A/D converter allowing it to capture transient weights at a far higher rate
than typical scales. Peak hold is cleared and re-enabled with the F-key.
Peak hold is not available on NTEP or OIML Legal for Trade certified scales.
4.1.8 Units
Units can be changed in two ways.
• Program a user function key to units
• Change the units with the setup menu using the following steps
Unit switching is not available on OIML certified Legal for Trade scales.
4.1.9 Print
Not available in the MSI-4260 IS.
USER
F
es
POWER
USER
F
es
POWER
USER
F
TARE
T
USER
F
TARE
T
st
ZERO
USER
F
Note
Note

Setup 13
4.2 Auto-Off
The Auto-Off feature prolongs the battery life by powering off the unit when not in use. Whenever a button is pressed or the
detected load is in motion exceeding 10d, the time limit is reset. When disabled, the unit will remain on and only turn off when
the power key is pressed or the battery dies.
Use the following steps to set the Auto-Off function:
1. Press and hold and .  displays.
2. Press the to scroll to .
3. Press . The current
 time displays.
4. Press the to scroll through the available times.
5. Press when the desired time displays.  displays.
6. Press to exit setup and store the settings.
Press at any time to cancel the procedure.
4.3 Sleep
The Sleep parameter reduces power consumption by automatically turning off the display during periods of inactivity. While in
the sleep mode, the green acknowledge annunciator blinks at a one second rate to indicate the unit is in sleep mode. To wake
up the unit, either a button must be pushed (front panel) or the weight must change by 5 d or more.
Sleep must be set to less time than the Auto-Off timer.
1. Press and hold and .  displays.
2. Press the to scroll to the  function.
3. Press . The current
 time displays.
4. Press the to scroll through the available times.
5. Press when the desired time displays.  displays.
6. Press to exit setup and store the settings.
Press at any time to cancel the procedure.
USER
F
es
POWER
USER
F
TARE
T
USER
F
TARE
T
st
ZERO
Note
es
POWER
Note
USER
F
es
POWER
USER
F
TARE
T
USER
F
TARE
T
st
ZERO
Note
es
POWER

14 MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
4.4 Display Brightness
The Display setup menu is used to set the display brightness. There are four fixed brightness settings and one automatic light
sensing brightness setting.
Auto setting will automatically detect the ambient light and adjust the brightness of the display accordingly. Bright light will cause
the display to be at the brightest setting. The display brightness will reduce as ambient light reduces.
There are four fixed brightness settings, LO-1, LO-2, HI-1 and HI-2. Lower brightness settings increase battery life.
1. Press and hold and .  displays.
2. Press the to scroll to the  function.
3. Press . The current
 setting displays.
4. Press the to scroll through the available settings.
The display brightness changes when each setting displays.
5. Press when the desired setting displays.  displays.
6. Press to exit setup and store the settings.
Press at any time to cancel the procedure.
4.5 Setpoints
The MSI-4260 IS supports three setpoints. Common uses of set points are for warnings or process control. It comes standard
with LED outputs for a triggered set point.
Figure 4-1. Setpoint LED’s
Contact Rice Lake Weighing Systems for other setpoint output options which are displayed below.
Setpoint Description
Setpoint Mode
 Indicates the setpoint will trigger when the weight exceeds a set value
 Indicates the setpoint will trigger when the weight is less than a set value
Setpoint Weight Type
 Responds to net or gross weight
 Responds to gross weight regardless of the display
 Responds to the totaled weight
 Responds to the total count (number of samples)
 Responds to the number of times the weight has exceeded 25% of capacity
Table 4-2. Available Setpoint Settings
USER
F
es
POWER
USER
F
TARE
T
USER
F
Note
TARE
T
st
ZERO
Note
es
POWER
Setpoint 1 is Blue
Setpoint 2 is Green
Setpoint 3 is Red

Setup 15
To set the setpoint:
1. Press and hold and .  displays.
2. Press to scroll to the desired setpoint ().
3. Press . The current
 mode displays.
4. Press to scroll to the setpoint mode desired.
5. Press . The current
 weight type displays.
6. Press to scroll to the desired weight type.
7. Press . The current setpoint weight value displays.
8. Press . The first digit blinks.
9. Press to scroll to the desired number.
10. Press . The second digit blinks.
11. Repeat steps 8-10 until the desired value displays.
To enter a decimal point, press while the digit is blinking. To correct a digit, press to step back.
12. Press . The value stops blinking and the next setup menu item displays.
13. Repeat steps 2-12 to set all the setpoints to be used.
14. Press to exit setup and store the settings.
Press at any time to cancel the procedure.
USER
F
es
POWER
USER
F
TARE
T
USER
F
TARE
T
USER
F
TARE
T
USER
F
USER
F
TARE
T
Note
es
POWER
st
ZERO
TARE
T
st
ZERO
Note
es
POWER

16 MSI-4260 IS Port-A-Weigh Intrinsically Safe Crane Scale
4.6 Total
For the accumulation of multiple weighments, the total function uses the displayed load, so gross and net readings can be
added into the same total.
There are four modes of totalizing: manual and three auto modes. The manual mode requires the TOTAL key be pressed with
the weight on the scale. The weight is added to the previously accumulated value. This assures that a weight on the scale is
only added to the total once.
Both the manual and three auto total modes require that the weight on the scale return below 0.5 percent (relative to full scale)
of GROSS ZERO or NET ZERO before the next weighment can be added. Applied weight must be ≥1percent of full scale above
GROSS ZERO or NET ZERO before it can be totaled.
Manual Total
The USER key under the Manual Total mode functions in this manner:
•Weight is greater than one percent of capacity and has not been totaled – Pushing the USER key will add the
current weight to the TOTAL weight. The ACK LED’s blink to indicate the weight was accepted. The TOTAL annunciator
lights and the Total weight is displayed for five seconds and then the number of samples is displayed for two seconds.
•Current Weight has been totaled – Pushing the USER key will display the Total weight for five seconds (View Total)
without changing the Total value. The TOTAL annunciator will light during the TOTAL weight display. After five seconds of
Total Weight display, the number of samples is displayed for two seconds.
•Weight is less than one percent of capacity – The USER key functions as View Total only and functions as View Total
until the one percent threshold is exceeded to allow the next addition to the total value.
Auto Total
The USER key under the AUTO TOTAL mode functions as Auto Total On / Auto Total Off.
The Auto Mode has three variations which are programmed in the Setup menu:
• – AutoLoad ensures any settled load above the Rise above threshold will be automatically totaled. The scale
must fall below the Drop below threshold before the next total is allowed.
• – AutoLast mode takes the last settled weight to auto total with. The total occurs only once the scale goes
below the threshold. This allows the load to be adjusted without a total occurring. Once the load is removed, the scale
uses the last settled reading for total.
• – AutoHigh uses the highest settled reading. This is useful for loads that can’t be removed all at once.
Total Mode will not function while the scale is in motion, make sure is on. If the system fails to achieve stable
readings, increase the filter setting or increase the size of the scale division (d) in the Init Cal procedure.
Set Total Mode
1. If the unit is turned off, press and hold then press
If the unit is on, press and simultaneously.  displays.
2. Using the , scroll to .
3. Press . The currently saved total mode displays.
4. Press to scroll through the selections.
5. With selection displayed, press to select.  displays.
Press to save and exit to weighing mode or press to continue to another setup menu item.
Note
USER
F
es
POWER
USER
F
es
POWER
USER
F
TARE
T
USER
F
TARE
T
st
ZERO
USER
F