Rice Lake Port-A-Weigh Plus MSI-4300 User manual

MSI-4300
Port-A-Weigh Plus
Technical Manual
PN 196976October 28, 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 Signal Definitions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2.1 Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2.2 Optional Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Display and Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.1 Keyboard Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2.1 Installing and Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Zero Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 Net/Gross Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.4 Tare In/Tare Out Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.5 Test Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6 Optional Infrared Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6.1 Power On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6.2 ID Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6.3 Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6.4 Numeric Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7 Remote Control Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7.1 Infrared Remote Comments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8 Proper Loading Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.0 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.1 Enable Calibration/Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.2 Standard Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.3 Fine Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.4 Resistor Calibration Number (RCal) Value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 Other Setup Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3.1 Setpoints Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3.2 Disable Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3.3 Initialize the Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

MSI-4300 Port-A-Weigh Plus
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

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 1
1.0 Introduction
The MSI-4300 Porta-Weigh Plus is the ideal crane scale for heavy-duty applications in industrial environments.
The MSI-4300 Porta-Weigh Plus 7-key model is no longer supported.
For information regarding the MSI-4300 Porta-Weigh Plus 7-key model, see www.ricelake.com.
1.1 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 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 5% 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 MSI recommended shackles.
Do not remove or obscure warning labels.
Keep hands, feet and loose clothing away from moving parts.
For guidelines on the safe rigging and loading of overhead scales and dynamometers, see the (MSI Crane Scale Safety and
Periodic Maintenance Manual PN 153105).
There are no user-serviceable parts within the MSI-4300. Any repairs are to be performed by qualified service personnel only.
Note
DANGER
WARNING
CAUTION
IMPORTANT
WARNING

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1.2 Overview
The MSI-4300 Port-A-Weigh Plus is world renowned for safe and reliable use in heavy-duty industrial crane scale applications.
No other crane scale compares with the advanced features and benefits provided by the MSI-4300.
The MSI-4300 includes an extra large 1.6'' (41 mm) alphanumeric LCD display with adjustable backlighting providing
user-friendly visibility from a distance.
1.2.1 Standard Features
• Designed to meet or exceed all USA, Canadian, United Kingdom and International standards
• Rugged construction throughout. Single printed circuit board is shock mounted to withstand shocks in excess of 50 G’s;
Switches are totally sealed and rated for over 10 million operations
• Precise high resolution 20-bit A/D conversion coupled with advanced 16-bit microcontroller provides world class features
and accuracy
• Six 1.6'' high (41 mm) digits for clear weight readings from a distance
• Easy to read annunciators of measurement modes such as NET or GROSS are provided on eight 0.825'' (21 mm)
alphanumeric characters; Also used for menu prompts
• Display illumination uses rugged, long life, electroluminescent backlighting coupled with a transflective liquid crystal
display providing optimum display contrast under all ambient conditions from full sunlight to total darkness; Operation is
light-sensing automatic or manually set
• Exceptional battery life: Typically 2000 hours of continuous use provided by eight alkaline D cell batteries;
Maximum battery life is reduced by use of the backlighting; full time low light operation provides up to 300 hours of
operation; A typical operating cycle of 8 hours daylight use and 2 hours night use provides 10 months of operation on a
single battery change; The MSI-4300 automatically powers down when not in use (this feature can be disabled); A low
battery indication displays when approximately 10% of battery life remains
• Easy to maintain: Full digital calibration assures reliable, repeatable measurements
• Complete marine sealing ensures reliable operations under harsh weather conditions
• Anti-EMI shielding is standard; Low emissions and susceptibility
1.2.2 Optional Features
• D-cell battery option, provides up to 2,000 hours of operation
• Substitute bottom swivel hook with shackle
• Oversized top-lifting eye or shackle
• Oversized bottom hook
• Universal direct power supply; 85–265 VAC, 47–440 Hz / 130–330 VDC
• Low headroom top adapter
• Audible setpoint alarm
• NTEP Certified configuration
• Custom top and bottom interfaces
• Crane scale cart
• IR Remote control is available as an option; Adds keyboard tare and other features

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 3
1.3 Display and Keypad
The display is a backlit, transflective LCD which provides excellent readability from full sunlight to total darkness. The
alphanumeric section prompts the operator through setup and calibration.
Figure 1-1. Display Feature and Keys
1.3.1 Keyboard Features
Silicon elastomeric rubber switches provide up to 10 million operations which are far more rugged than mechanical switches
which can withstand excessive impact without affecting operation
Rubber membrane provides watertight and salt spray-proof seal. Additional poly-shield on underlay provides second layer of
integrity and prevents humidity contamination
Item No. Description
1 Motion Icon – Indicates there is motion on the scale
2 Motion Indicator – Indicates there is motion on the scale
3 Negative Symbol – Indicates a negative value
4 Center Of Zero Icon – Indicates the center of zero
5 Low Battery Icon – Indicates if the battery has low power
6 Infrared Remote On – Indicates the function is on
7 Digit Weight – 6 max
8 Character Message Display – 8 max, prompts the operator through setup and calibration
9 Auto Total On – Indicates the function is on
10 Units – Indicates unit of measure for weight displayed; lb, kg, t, METRIC t
11 Power – Turns power on/off; Prompts user to zero the initial deadload
12 Zero – Zeros the scale, zero range depends on standard
13 Net/Gross – Toggles weight between net and gross when a tare is in place
14 Tare In/Out – In GROSS mode, selecting TARE zeros weight on the scale which causes the scale to go into the NET mode;
When in NET mode, selecting TARE clears the TARE value and the scale reverts to the GROSS mode
15 Test – Causes a display segment check, provides battery and RCAL tests
Table 1-1. Display Features and Keys
T
0
ZERO NET/GROSS TARE TSETREWOP
IN / OUT
11 12 13 14 15
7
10
8
1
2
3
4
5
69

MSI-4300 Port-A-Weigh Plus
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2.0 Installation
This section provides an overview of the MSI-4300 installation instructions.
2.1 Unpacking
Visually inspect the MSI-4300 for damage, immediately after unpacking. If parts were damaged in shipment, notify Rice Lake
Weighing Systems and the shipper immediately. The shipping carton contains the MSI-4300 as well as the following
components.
2.2 Batteries
Eight standard D cell batteries are required unless the scale uses another supported power option. Alkaline type is
recommended but standard carbon-zinc or Ni-Cad D cell batteries can also be used. Standard carbon-zinc or Ni-Cad D cell
batteries reduce the available battery life significantly.
2.2.1 Installing and Changing
The batteries must have enough charge to ensure accurate operation. If the batteries are too low, the scale automatically
powers off (eight batteries in series must total more than 5.4 V).
To change:
1. Turn the scale off.
2. Remove the battery tubes by turning the knobs counterclockwise. It is not necessary to remove both tubes at once.
3. Replace all the batteries in each tube. Never mix old batteries with new batteries.
4. Reinstall the battery tubes by inserting the tubes back into the unit and turning the knobs clockwise.
The batteries can be checked with the Test Mode. Power displayed is in relative percent (%) of battery life. If the
number with fresh batteries is extremely low (less than 10%), turn off the power, remove the tubes and check if the
polarity of all the batteries are correct.
Note

Operation
© Rice Lake Weighing Systems ● All Rights Reserved 5
3.0 Operation
This section provides an overview of the MSI-4300 operation instructions.
Ensure the recommended power supply is secured prior to device operation (Section 2.0 on page 4).
3.1 Power
Prior to turning on the scale, ensure the batteries have enough charge for operation or the scale does not turn on.
The ambient temperature must be between -22and +140 (-30 and +60C).
Press the POWER key. The following occurs:
1. Display Check: all segments are illuminated.
2. MSI PAW+ and the software version number display.
3. All internal operations are checked and non-conformance causes an error message.
4. The current weight displays in GROSS mode.
Figure 3-1. Scale Power On Display
In normal operation on lb or kg is visible (Figure 3-2).
3.2 Zero Switch
Press ZERO to zero the scale.
If the scale does not zero, check the following:
1. Ensure the scale is stable. The scale does not zero if the motion annunciator is ON.
2. Ensure the scale is in GROSS mode. The scale does not zero in NET mode.
3. The scale only accepts a zero setting over the range of -10%±100% (NIST, Alaska & Industrial Standards) or
-1%–+3% (UK, Australia, OIML & Canadian Standards).
4. On initial power up, the zero range is 20%.
5. The weight reading must be stable within 1 division. The unit displays ZEROED and the digits display 0.
6. The zero setting is stored by the backup memory, which restores it the next time the system is turned on.
7. The unit displays GROSS and the digits display 0.
Figure 3-2. Zeroed Display
Note
Note

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3.3 Net/Gross Switch
Switches the display between net and gross modes temporarily.
1. NET/GROSS works even when the scale is in motion.
2. Not in net mode (Tare = Ø): No action, display continues to read gross weight only.
3. In NET mode: displays gross weight for 4 seconds. GROSS displays then returns to NET.
Figure 3-3. Net/Gross Display
3.4 Tare In/Tare Out Switch
Sets and removes tare.
1. Only positive weight readings can be tared.
2. The scale only tares when it is in gross mode.
3. The motion annunciator must be off and the weight reading must be stable.
4. Setting or changing the tare has no effect on the zero setting.
5. Taring reduces the apparent over-range of the scale.
Example: If a 1000 lb container was tared and the scale capacity is 5000 lb, the scale overloads at a net weight of
4000 lb plus additional allowed overload (usually ~4%) (5000-1000).
Figure 3-4. Tare Display
If no current tare is set:
1. The entire range of the scale can be tared. If the motion condition is met the display temporarily displays TARE SET
then converts to NET display and the digits register Ø. All subsequent readings are deviations from the set tare value.
2. Once tare is set, the scale displays NET weight.
3. To remove the tare value, select TARE; The tare value is cleared, the scale returns to gross mode.

Operation
© Rice Lake Weighing Systems ● All Rights Reserved 7
3.5 Test Switch
Provides a functional system test and an on-demand display check without disturbing the current weighment.
Provides calibration verification in the form of a load cell calibration number.
To start the text sequence select TEST.
1. All digits (7 segment and 16 segment) count once from 0–9. All annunciators are tested. 16 segment displays also go
through “*”.
2. Battery condition is displayed next in the form: “%” (percent) of battery life with a figure from 1–100 on the digits.
Additional warnings display if the battery is below 5%. The % battery life varies depending on whether the backlight is
on or off.
3. The Cal number is displayed next. To ensure the Cal number is accurate the scale must be near zero in the same state
it was calibrated in. The original Cal number is printed on the right battery tube calibration label. Cal number shifts of
up to 10 counts are insignificant.
4. Internal tests are performed to further ensure scale integrity.
5. The reading returns to the last condition or an error message is displayed.
Figure 3-5. Test Display

MSI-4300 Port-A-Weigh Plus
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3.6 Optional Infrared Remote Control
The optional infrared remote control is no longer available.
Operating the MSI-4300 with the Infrared Remote Control is identical to operating the scale from the standard keyboard.
Additional features are available using the remote and certain cautions are warranted.
The Infrared Remote is highly directional and requires fairly accurate aiming to achieve the maximum operation range.
The shape of the remote is designed to help in aiming. Aiming becomes less critical as the distance decreases.
3.6.1 Power On/Off
To turn the scale on with the remote, hold down the POWER key until the scale turns on. Power-on is the only function which
requires more than a short press of a button. Power-off is instantaneous. Holding down the power-off button turns the unit to
turn back on.
3.6.2 ID Number
Up to 9 separate ID codes are available. Each ID code has a total register and a tare register. Weighing setups can be
prearranged by setting the ID number and establishing a tare memory for the ID number. The next time the particular ID number
is selected the proper tare value is already established and the previously stored total value is enabled.
The ID number is changed by selecting ID NUMBER then select the desired number (1–9). The default ID number is 1 which is
the only available ID without the remote.
3.6.3 Printing
Selecting the PRINT key on the remote prints the current displayed value (requires EIA-232 option).
To print gross, net or total values:
1. Select NET/GROSS or VIEW to place the desired mode on the display.
2. Select PRINT.
To print tare:
1. While in net mode, select TARE.
2. Select PRINT.
Do not select TARE while in gross mode as this clears the old tare and establishes a new tare.
3.6.4 Numeric Entry
The Tare memory values and Set-Point values can be directly entered from the remote. Instead of using the SELECT key to
scroll through values, push the desired number directly. The Tare memory number can be accessed directly (SHIFT - TARE - 3
directly selects Tare memory #3).
3.7 Remote Control Battery Replacement
Type – Standard 9 volt (NEDA/ANSI 1604 A, IEC 6LR61), alkaline type is preferred due to high LED peak currents. There is
storage space for a spare battery internal to the remote.
When to Change – The internal 9 volt battery needs to be replaced when the indicator LED is no longer visible when a button
is pushed. The operating range of the remote gradually decreases. When the range is insufficient for the normal mode of
operation, replace the battery (even if the LED is still visible).
Installing/Changing
1. Turn the remote unit over. Remove the three Phillips screws with a number 2 Phillips head screwdriver.
2. Turn the unit right side up. Pop the front panel out by applying pressure to the lower left corner of the blue urethane
case thus exposing a corner of the front panel/switch assembly. With a flat screwdriver blade, carefully pry out the
switch from the urethane case by working the screwdriver up the left edge of the switch assembly.
Do not insert the screwdriver up the left edge of the switch assembly.
Do not insert the screwdriver too deep to prevent damage to the internal electronics
3. Fold the switch assembly to the left side of the unit, exposing the battery and the printed circuit board.
Note
CAUTION
CAUTION

Operation
© Rice Lake Weighing Systems ● All Rights Reserved 9
4. Pull the battery connector off the battery. Remove the battery by tilting it up sideways.
5. Install the new battery by tilting it in sideways and wedging it in the small indented region between the printed circuit
board and the case wall.
6. Reconnect the battery connector. Check for operation by pushing a key on the front panel and ensuring the indicator
LED is lit. If the LED is not lit, check the keyboard connector to ensure the connector is seated properly and the battery
is fresh.
7. Replace front panel/switch assembly by centering it over the open area and pressing the edges evenly until it seals.
8. Replace the three screws. Make sure the screw seal gaskets are in good condition.
3.7.1 Infrared Remote Comments
Due to the sensitivity required to allow for full sunlight operation, it is possible to overload the input to the infrared remote
receiver in the scale if the remote is too close. This situation is characterized by erratic remotely controlled operation.
The simple remedy for this is to not aim directly at the scale but aim slightly off center when very close.
The range of the remote is optimized when the scale is 8' or more off the ground. The infrared sensor is aimed slightly down to
help diminish sunlight overload. When the scale is closer to the ground, aim the remote up into the infrared window from below.
if the scale is used normally very low to the ground it is sometimes possible to bounce the infrared signal off the ground and up
into the sensor.
SHIFT key functions require the keys are entered in rapid fashion. While entering values, if more than five seconds pass
between the SHIFT key and subsequent key presses, the scale forgets the prior SHIFT entry. This could mean the scale
powers off rather than go into test function (Shift, Power).
• The ID# function has a five second maximum window for the number entry otherwise the ID# remains as before
• As shipped, the MSI Infrared Remote operates the MSI-4300; Up to 8-channels are possible; Contact the factory for
more details
By special order it is possible to encode infrared transmissions so a separate remote is required for each MSI-4300.
3.8 Proper Loading Procedures
Follow Figure 3-6 for proper loading procedures.
Figure 3-6. Proper Loading Procedures
Note
DO
ENTERSETUP PEAKHOLD TARE MEMORY CLEAR SELECT
TEST
∑
T
0
ZERO NET/GROSS TARE TOTAL WEIVREWOP
∑
SHIFT
USE HARDWARE THAT CREATES SINGLE
POINT ATTACHMENTS AND ALLOWS THE
SCALE FREEDOM OF ALIGNMENT.
DO NOT
ENTERSETUP PEAKHOLD TARE MEMORY CLEAR SELECT
TEST
∑
T
0
ZERO NET/GROSS TARE TOTAL WEIVREWOP
∑
SHIFT
DO NOT USE MULTIPLE ATTACHMENTS.
DO NOT
ENTERSETUP PEAKHOLD TARE MEMORY CLEAR SELECT
TEST
∑
T
0
ZERO NET/GROSS TARE TOTAL WEIVREWOP
∑
SHIFT
1. DO NOT PUSH OR PULL ON LOADED
SCALE. 2. DO NOT PULL LATERALLY ON
HOOK WITH SCALE LOADED.
∑
DO NOT
ENTERSETUP PEAKHOLD TARE MEMORY CLEAR SELECT
TEST
T
0
ZERO NET/GROSS TARE TOTAL WEIVREWOP
∑
SHIFT
DO NOT INTERFACE HARDWARE
(SHACKLES, HOOKS ETC.) THAT ARE
OVERSIZED AND RESTRICT SINGLE POINT
LOADING AND SELF-ALIGNMENT WHICH
CAN RESULT IN OFF-AXIS LOADING.

MSI-4300 Port-A-Weigh Plus
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4.0 Configuration
This section provides an overview of the MSI-4300 configuration instructions.
4.1 Navigation
Figure 4-1. Navigation Keys
4.2 Calibration
There are three modes of calibration available:
• Standard calibration
• Fine calibration
• Calibration with the resistor calibration number (RCal)
The following section instructs the user to perform each one.
4.2.1 Enable Calibration/Setup
1. Remove the seal port on the right side of the MSI-4300 front casting.
2. Select the small button located inside the seal port. Table 4-2 parameters display.
See Table 4-1 for navigation keys to use this menu.
Item No. Description
1 Power – Escape calibration/setup
2 Zero – Zero the scale during calibration; CLEAR during setups
3 Net/Gross – Scroll through menu items; Used in FINE CAL as UP
4 Tare In/Out – Used only in FINE CAL as DOWN
5 Test – Used as ENTER; When desired menu item displayed, press to store item
Table 4-1. Navigational Keys
Parameter Selections
FILTER Low, Med, High
UNITS kg, lb, Ton, Metric Ton
STD CAL Starts Cal procedure
FINE CAL Minor calibration adjustments
CAL RCAL Emergency calibration only
STANDARD Industry, NIST, OIML, Alaska, Canada, United Kingdom, Legal-for-Trade, Australia
AUTO OFF Enabled, Disabled
AZM Enabled, Disable
REMOTE Enabled, Disabled
LIGHTING Automatic, On, Off
CONTRAST Eight steps with numerics at “123456” and message reading “Contrast”
EXIT Select Enter (Test) to quit setup
HI SET PT Hi Value Disabled, Gross, Netgross Response Normal, Blanklcd, Blinklcd Exit
LO SET PT Lo Value Input Wt Mode Disabled, Gross, Netgross Response Normal, Blanklcd, Blinklcd Exit
TOTALIZE Manual, Auto
Table 4-2. Calibrate Setup Menu
T
0
ZERO NET/GROSS TARE TSETREWOP
IN / OUT
1 2 3 4 5

Configuration
© Rice Lake Weighing Systems ● All Rights Reserved 11
4.2.2 Standard Calibration
Standard calibration is recommended to be used for normal test weight or cal fixture calibration.
1. Select the key behind the seal port to enable calibration.
2. Press the SELECT (NET/GROSS) key to scroll to the STD CAL message.
3. Select the ENTER (TEST) key. Ø SCALE displays.
4. Remove all weight from the scale.
5. When motion ceases, push the ZERO key.
6. If the detected zero weight are within acceptable limits WEIGHT displays, indicating it is time to add the test weight(s).
7. Pick up a test weight of at least 20% of capacity.
A test weight of 50% or more of capacity is recommended for highest accuracy.
8. Press the SELECT (NET/GROSS) key to match the displayed value to the weight of the test weight.
9. When a match is made select the ENTER (TEST) key.
10. Repeat for the remaining digits. When the last digit is entered the scale is steady. This can affect calibration accuracy.
11. Select the CLEAR (ZERO) key to return to normal scale operation or press the SELECT (NET/GROSS) key to choose
another calibrate setup function.
4.2.3 Fine Calibration
Fine calibration is for minor adjustments to the calibration and is usually not necessary.
1. Select the key behind the seal port to enable calibration.
2. Press the SELECT (NET/GROSS) key to navigate to FINE CAL.
3. Select the ENTER (TEST) key.
4. Pick up a test weight of at least 50% of capacity. The weight is indicated on the numeric digits.
This function does not work unless the scale is loaded at 45% of capacity or more.
5. Press the SELECT (NET/GROSS) key to move the displayed reading up.
6. Select the TARE key to move the reading down.
7. When the displayed reading is acceptable select the ENTER (TEST) key.
8. Select the CLEAR (ZERO) key to return to normal scale operation or press the SELECT (NET/GROSS) or the ENTER
(TEST) key to choose another Calibrate Setup function.
4.2.4 Resistor Calibration Number (RCal) Value
Cal RCal is for emergency calibration when test weights or a calibration system is not available.
1. Remove the right battery tube (facing the back). An RCal value is printed on the calibration label.
2. Make a note of the value and reinsert the battery tube.
3. Power the scale on and select the key behind the seal port to enable calibration.
4. Press the SELECT key to navigate to the CAL RCAL message.
5. Select the ENTER (TEST) key. Ø SCALE displays.
6. Remove all weight from the scale.
7. Select the ZERO key. When motion ceases and assuming the detected zero weight is within acceptable limits,
ZEROED displays.
8. Press the SELECT (NET/GROSS) key and select the ENTER (TEST) key to match the left most digit of the displayed
reading to the RCAL value noted earlier.
9. Repeat for the remaining digits. Select the ENTER (TEST) key.
10. Select the CLEAR (ZERO) key to return to normal scale operation or press the SELECT (NET/GROSS) key to choose
another calibrate setup function.
Note
Note

MSI-4300 Port-A-Weigh Plus
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4.3 Other Setup Functions
FILTER – The filter must be set to LO to pass most LFT (Legal for Trade) jurisdictions. In industrial applications, setting the filter
to medium or high can provide a more stable reading.
AUTO OFF – When enabled, the auto off feature prolongs the battery life of the scale by turning the power off after 1 hour of
inactivity. When a key is depressed or the detected weight is in motion the 1 hour limit is reset. The scale remains powered on
indefinitely if the weight is changing or when a key is pressed at least once within an hour. This feature defaults to the enabled
mode when initially calibrated. When disabled, the scale remains powered on and only the POWER key turns it off.
LIGHTING – The electroluminescent backlight is normally controlled by a photocell which detects ambient light and determines
if the backlight is to be on or off (automatic mode). The backlight can be permanently enabled (on mode) or for increased
battery life, permanently disabled (off mode).
REMOTE – This option enables or disables the optional IR Remote control. This option must be installed to function.
CONTRAST – Contrast is used to optimize the contrast of the liquid crystal display at various viewing angles. This is a factory
preset for optimal viewing from below the scale. By going through the 8 steps, the viewing angle can be changed slightly to
improve contrast for other applications.
SETPOINT – A function used to enter low and high setpoint values, mode (disabled, gross, net/gross) and response
(normal, blank display, blink display) of setpoints. When the weight exceeds a Hi Setpoint value, or falls below a Low Setpoint
value, the scale may respond in a variety of ways. The normal response is to turn on an open Drain MOSFET which can be
used to drive relays, lights, sirens and others (contact the factory or MSI distributor for more details). Other responses include
blanking the display (BLANKLCD) or flashing the weight reading on and off (BLINKLCD).
Follow the Setpoints Setup procedure for entering setpoints:
4.3.1 Setpoints Setup
1. Select the key behind the seal port to enable calibration.
2. Press the SELECT (NET/GROSS) key to scroll to the HI SETPT or LO SETPT message.
3. Select the TEST key.
4. HI VALUE displays.
5. Push the TEST key.
6. The most significant digit flashes. INPUT WT displays.
7. Push the SELECT key until the first digit of the desired weight value is displayed.
8. Push the TEST key. The CLEAR (ZERO) key can be used to change an entry if necessary.
To enter 100 kg on a 10,000 kg scale, the first two digits must be entered as zeros (00100).
9. The next most significant digit flashes. Press the SELECT key and the TEST key to finish out the entry.
With the IR remote, the value can be entered directly.
10. After the entire Hi Setpoint is entered, MODE displays. Select the TEST key.
The first selection is DISABLED. This mode allows the user to program a setpoint without the setpoint actually operating.
1. To enable the setpoint, push the SELECT key until either gross mode or net/gross mode is selected.
2. In gross mode the setpoint operates at the value based on gross weight regardless of tare values being subtracted.
If this is the desired setpoint operation mode select the TEST key.
3. If the setpoint operates relative to a tared weight the net/gross mode is used. Press the SELECT key to change from
GROSS to NETGROSS then select the TEST key. In this mode the setpoint operates at the value which represents
either a gross weight or a net weight.
Note
Note

Configuration
© Rice Lake Weighing Systems ● All Rights Reserved 13
The next selection TEST the setpoint RESPONSE – what the scale does when a setpoint value is reached.
1. Select the TEST key. There are now three selections: The NORMAL response turns on the internal MOSFET which is
connected to a user-supplied alert device such as a siren or strobe light.
2. Press the SELECT key to change the response to BLANKLCD. In this mode the liquid crystal display weight reading
blanks out and the message HI SETPT displays. The MOSFET functions as before.
3. Press the SELECT key again to change to the BLINKLCD response. Weight readings continue, but the display
alternates between a standard weight reading and a HI SETPT indication.
In all three modes, the overload condition overrides the display mode.
4. After the desired setpoint response is selected, press the TEST key.
5. The Setpoint Menu displays. Press the SELECT key to return to the above operations (VALUE, MODE, RESPONSE)
if modifications are required.
6. To quit and return to normal scale operation use SELECT until EXIT? displays.
7. Select the TEST or the CLEAR key (no shift required) to return to the Setup Menu.
8. Select the CLEAR key to get out of the menu and back to standard scale operation. Use the same procedure for a
Low Setpoint.
4.3.2 Disable Setpoint
It is often useful to be able to set up a setpoint ahead of time and disable it for testing purposes.
1. From the SETUP function, press the SELECT (NET/GROSS) key until HI SETPT (or LO SETPT) displays.
2. Select the TEST key. This allows the HI SETPT to be modified.
3. Press the SELECT key until MODE displays.
4. Select the TEST key.
5. Press the SELECT key until DISABLE displays.
6. Select the TEST key. This disables the setpoint and returns to the Setpoint Menu.
7. Select the CLEAR (ZERO) key twice to exit the Setpoint and Setup menus or press the SELECT key to select the next
desired operation.
8. To re-enable the Setpoint, follow Step 1 through Step 3 above. On Step 4 select GROSS mode or NET/GROSS mode.
4.3.3 Initialize the Scale
This procedure must be followed by a complete Setup and Calibration. Be sure to set the Calibration Units to the desired unit of
measure and the legal standard as required before starting initial calibration.
1. Remove the seal port but do not select the Calibration Switch.
2. Select the TEST key then select the Calibration Switch. RESET displays.
3. Press the SELECT (NET/GROSS) key to scroll to UNITS.
4. Select the TEST key.
5. Press the SELECT (NET/GROSS) key to scroll to STANDARD.
6. Select the TEST key.
7. Press the SELECT (NET/GROSS) key to scroll to the desired standard.
8. Select the TEST key.
9. Press the SELECT (NET/GROSS) key to scroll to STD CAL.
10. Select the TEST key.
11. The default capacity of the scale displays. If the capacity is correct, select TEST key.
• If not, press the SELECT (NET/GROSS) key and the TEST key to change the capacity
A capacity entered must match the load cell capability and in the case of LFT units--must be a certified capacity.
12. Next the count-by is entered. Divide the capacity by the count-by to determine total counts.
13. Go to the Calibration Procedure section for the rest of the initial calibration.
Note
Note

MSI-4300 Port-A-Weigh Plus
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5.0 Specifications
Accuracy
±0.1% +1 d of applied load
Resolution
3,000–5,000 d standard (Up to 10,000 d available)
Enclosure
NEMA Type 4, IP66, marine grade 356 alloy anodized cast aluminum
Top Lifting Eye, Shackle and Hook
Crosby® or equal with 360° thrust-bearing swivel hook
Design Overload
200% Safe / 500% Ultimate (except where noted)
Functions
Power, zero, net/gross, tare and programmable test/user
Display
6 digit, 1.6'' (40 mm) LCD (upper) 8 digit, 0.8''
(20 mm) LCD (lower) with adjustable display contrast
Displayable Units
Pounds, kilograms, tons and metric tons selectable
Power
12 V rechargeable battery
115/230 VAC battery charger included
Operating Time
Up to 2000 hours with typical use; 300 hours in low light conditions
Operating Temperature
5°F–122°F (-15°C–50°C)
Filtering
OFF, LO, Medium and HI selectable
Warranty
One-year limited
Approvals
NTEP
CC 92-176 - 5,000 lb (2,500 kg)
Accuracy Class IIIL nmax: 5 000
Measurement Canada
Approval AM-4984

230 W. Coleman St. • Rice Lake, WI 54868 • USA
U.S. 800-472-6703 • Canada/Mexico 800-321-6703 • International 715-234-9171 • Europe [phone]
Rice Lake Weighing Systems is an ISO 9001 registered company.
© Rice Lake Weighing Systems Specifications subject to change without notice.
www.ricelake.com
PN 196976October 28, 2019