Mettler Toledo XMC, XWS, XWT Operation Manual
STANDARD BENCH SCALE OPERATION & SERVICE MANUAL
Models XMC/XWS/XWT (-S) -XIS
STANDARD BENCH SCALE www.mt.com/xpress
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STANDARD BENCH SCALE
ABOUT THIS MANUAL AND MT EXPRESS
Thank you for purchasing an MT Xpress product.
All of our equipment is assembled and packed with great care. If you should find any incorrect item, please
contact your Xpress dealer immediately.
MT Xpress products are Weights & Measures approved precision weighing instruments. However, you may
want to obtain official certification through your supplier or local Weights & Measures office.
This MT Xpress product was developed, produced, and tested in a METTLER TOLEDO facility that has been
audited and registered according to international ISO 9001 quality standards and ISO 14000 environment
control program. Properly used and maintained, this product will provide years of accurate weighing.
Handle it as you would any piece of fine electronic equipment.
Please READ this manual BEFORE operating or servicing this equipment. Follow the instructions carefully
and save this manual for future reference.
We at MT Xpress want to make sure you received the product you expected. It is important to us that you
are satisfied with your purchase. If there is anything we can help you with, or if you are not satisfied with
either your product or the services received from the Xpress representative, let us know.
How can you reach us?
XPRESS CUSTOMER CARE CENTER, USA
24/7 Information and Support:
xpress@mt.com
AM to 8 PM EST Toll Free: 1-866-MTXPRESS
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Xpress
Mettler-Toledo, Inc.
60 Collegeview
Westerville, OH 43081
www.mt.com/xpress
STANDARD BENCH SCALE
FCC Approval
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
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STANDARD BENCH SCALE
CONTENTS
SAFETY NOTICE ...........................................................................................................................................5
PREPARING THE SCALE FOR USE ...................................................................................................................6
ENVIRONMENT................................................................................................................................... 6
UNPACKING AND ASSEMBLY ............................................................................................................... 6
POWER UP/DOWN SEQUENCE............................................................................................................. 8
YOUR XPRESS SCALE AT A GLANCE ................................................................................................................9
DISPLAY ............................................................................................................................................ 9
KEYPAD ............................................................................................................................................ 9
CURSORS (LED)................................................................................................................................. 9
OPERATING YOUR SCALE ............................................................................................................................10
STRAIGHT WEIGHING........................................................................................................................ 10
RE-ZERO FUNCTION.......................................................................................................................... 10
TARE FUNCTION ............................................................................................................................... 10
SPECIAL MODES - OVER/UNDER ..................................................................................................................11
OVER/UNDER SETUP MODE ............................................................................................................... 11
FUNCTION OF THE KEYS.................................................................................................................... 11
SET OVER AND UNDER VALUES.......................................................................................................... 11
OVER AND UNDER CURSORS ............................................................................................................. 12
OPERATION ..................................................................................................................................... 12
SCALE SOFTWARE SETUP............................................................................................................................13
ACCESS TO SETUP MODE .................................................................................................................. 13
FUNCTION OF THE KEYS.................................................................................................................... 13
PARAMETER LIST.............................................................................................................................. 13
EXIT SETUP MODE ............................................................................................................................ 13
CLEANING & MAINTAINING YOUR SCALE .......................................................................................................14
CLEANING AND MAINTENANCE .......................................................................................................... 14
TROUBLESHOOTING.......................................................................................................................... 14
SERVICING YOUR INDICATOR.......................................................................................................................15
VOLTAGE CHECKS ............................................................................................................................ 15
OPENING THE INDICATOR ................................................................................................................. 15
LOAD CELL WIRING .......................................................................................................................... 16
KEYBOARD REPLACEMENT ................................................................................................................ 16
CONTROLLER PCB REPLACEMENT...................................................................................................... 17
ACCESSING THE SERVICE MODE ........................................................................................................ 17
FUNCTION OF THE KEYS.................................................................................................................... 17
PARAMETER LIST.............................................................................................................................. 18
CALIBRATION ................................................................................................................................... 19
GRAVITY ADJUSTMENT...................................................................................................................... 20
SERVICING YOUR SCALE BASE..................................................................................................................... 21
LOAD CELL REPLACEMENT ................................................................................................................ 21
OVERLOAD STOP ADJUSTMENT.......................................................................................................... 22
SHIFT TEST ...................................................................................................................................... 23
APPENDIX.................................................................................................................................................24
ERROR MESSAGES ........................................................................................................................... 24
INDICATOR SPECIFICATIONS .............................................................................................................. 24
BASE SPECIFICATIONS ...................................................................................................................... 25
GEO VALUE TABLE ............................................................................................................................ 26
PHYSICAL DIMENSIONS..................................................................................................................... 27
STANDARD BENCH SCALE
SAFETY NOTICE
Product safety is a fundamental concern at MT Xpress. Use common sense and follow the simple
precautions listed below to ensure your safety and optimize the use and performance of this product.
− Read this manual before operating or servicing this product. Save this manual for future reference.
− Observe safety warnings located throughout this manual.
− Use caution when lifting or moving heavy equipment.
− This product should be serviced by qualified personnel. Exercise care when moving, testing, or
adjusting this product.
− Disconnect all power to this product before installing, servicing, or cleaning.
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− Use only MT Xpress parts for repair.
− Observe electrostatic handling precautions for electronic components. Allow at least 30 seconds after
power disconnection to allow charges to dissipate before servicing any electronic components.
− Allow the product to stabilize at ambient room temperature before applying power.
FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN DAMAGE TO EQUIPMENT OR BODILY HARM.
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PREPARING THE SCALE FOR USE
STANDARD BENCH SCALE
Xpress Standard Bench Scales are designed to meet the real world requirements of manufacturing,
agricultural, packaging, and general weighing applications, and are ready to use right out of the box.
The Xpress Standard Indicator is a rugged, reliable electronic weighing indicator in an IP65 washdown
enclosure designed for easy operation in washdown applications. The Xpress Standard Bench stainless
steel platforms (XMC-S, XWS-S and XWT-S) are also manufactured to be used in washdown applications.
Xpress Standard Bench mild steel platforms (XMC, XWS and XWT) are intended for use in general purpose
industrial and commercial environments. For the best performance, they should not be used in
environments requiring washdown, immersion in liquids, or exposure to corrosive chemicals
This chapter gives detailed instructions and important information regarding the successful installation of
the Xpress Standard Bench Scale.
ENVIRONMENT
Before you install the scale, identify the best location for the equipment. The proper environment enhances
its operation and longevity. Keep in mind the following factors, which might have a negative influence on
the scale's operation:
Vibration: Vibration diminishes the scale’s ability to measure accurately. Electrical machinery such as
conveyors and drill presses can cause inaccurate and non-repeatable readings. The scale may also read
inaccurately if it is not leveled properly.
Air currents: Moving air can cause the scale to read wind movement as an additional force and cause
inconsistency in the weighing results.
Friction: A scale cannot measure accurately if an object is rubbing or pressing against the scale platform.
UNPACKING AND ASSEMBLY
Thank you for purchasing an MT Xpress product. Please inspect the package immediately upon receipt. If
the box is damaged, check for internal damage and file a freight claim with the carrier if necessary. If the
container is undamaged, open the box, remove the scale and place it on a solid, flat surface. Please keep
the packing material and shipping insert in case you need to return the scale to an Xpress representative.
Package contents for all Xpress Standard Bench Scales include:
Product
− Xpress Standard Indicator
− Xpress Base
Documents
− Quick Start Guide
− Installation Instructions
CD-ROM
− Operation & Service Manual
− Column kits
− Accessory bag (seal screws, lead
seal wires, leads, column mounting
screws, flat washers, spring
washers, cable clamp, cable
protective baffle, Allen key)
STANDARD BENCH SCALE
Instructions Models XWS (-S) Models XWT (-S)
1. Open the box and take out the scale.
Remove the packing material from
each side of the scale.
Set the unit on a sturdy workplace.
2. Remove the platter, and remove the red
plastic shipping tabs in the corner of
the scale. (XMC (-S) model skip this
step).
3. Models XWS (-S): Attach the column
bracket beneath the bottom scale frame
by tightening the four socket head
screws.
Models XWT (-S):Attach the column
bracket near to the side of bottom scale
frame by tightening the two hex head
screws.
XMC (-S) model skip this step.
4. Coil the excess load cell cable and
insert it into the column. A small length
of tape applied to the ends of the coils
allows the cable to slide into the
column easier Mount the indicator onto
the column. Adjust the indicator to the
proper angle and fasten the bolt. (XMC
(-S) model skip this step).
5. Apply power to the indicator.
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6. Level the scale by adjusting four
adjustable feet.
Proper alignment Improper alignment
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STANDARD BENCH SCALE
POWER UP/DOWN SEQUENCE
Power Up: Press the power key to turn on the Xpress XIS. It goes through a series of self-tests when it is
turned on. The scale performs diagnostics on its internal memory, and precedes to normal the operating
mode. The power up sequence is as follows:
z All segments of the display segments and cursors light to verify operation.
z Next the unit displays the software part number; revision number, geo value and country one by one.
z The unit captures zero and is ready for normal operation.
Note: Before switching on the scale, always make sure there is nothing on the platter. If you have powered
up the unit with something on the scale, the scale may not find the zero value, and shows “------“. To clear
this condition remove the item, press the power key until the unit displays “off”, then press the power key
again, the scale will then capture the correct zero value.
Power Down: Press the power key until “OFF” is shown on the display to turn off the scale.
STANDARD BENCH SCALE
YOUR XPRESS SCALE AT A GLANCE
DISPLAY
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KEYPAD
Key Name Function Over/Under Setting
Zero key To return the scale to gross zero.
Tare key
Function key To enter OVER/UNDER mode.
Power key To turn the scale on or off.
To tare the scale. Pressing this key at zero
clears the tare value from memory.
Setting complete exit
Increment one digit (up 1, 2, 3..)
Move to the next digit to the right
Confirm choice
CURSORS (LED)
Cursor Description
>0< Illuminates when weight is gross zero (0).
UNDER Illuminates when the weight is less than the programmed UNDER value
OVER Illuminates when the weight is more than the programmed OVER value.
Net Illuminates to indicate the displayed value is net weight (gross minus tare).
lb, kg, oz Indicates current weight unit associated with the displayed value.
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