D01344301A
Z
Strain gauge load cell Instructions for Use
TC-LPR(T)-G6
Compression Load Cell
Introduction
Thank you for purchasing the TC-LPR(T)-G6 load cell.
Please read this document completely before using this
load cell to achieve its best performance and ensure safe
and proper operation.
Included accessories
If anything is missing or damaged, contact the retailer
where you purchased the product.
Test report × 1
Instructions for Use (this document) × 1
Load button × 1
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Company names and product names in this document are the
trademarks or registered trademarks of their respective owners.
IMPORTANT SAFETY INSTRUCTIONS
V
WARNING
If something abnormal occurs
In the unlikely event that the product produces smoke, a
strange smell or noise, for example, continuing to use it in
this abnormal state could cause fire or electric shock. After
cutting off the power, confirm that smoke is no longer being
produced. Then, request repair from the retailer where you
purchased the product.
Do not open the cover.
Never remove the cover from this unit. Doing so could
cause electric shock. Request inspection and repair from
the retailer where you purchased the product. Do not
alter this unit. Doing so could cause fire or electric shock.
Do not put foreign objects or water, for example,
into the unit.
Do not place a container that holds water, for example,
on top of this unit. Liquid overflowing or entering the unit
could cause fire or electric shock.
Do not use the unit with any power supply voltage
other than that specified.
Do not use the unit with any power supply voltage other than
that specified. Doing so could cause fire or electric shock.
V
CAUTION
Unsuitable installation locations
Do not place the unit in the following types of locations.
Doing so could cause fire or electric shock.
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Locations where it might be exposed to smoke or steam,
such as near a kitchen table or humidifier
o
Unstable locations, including unsteady stands and
tilted places
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Location that are very humid or dusty
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Locations that are exposed to direct sunlight
When not using the unit for a long time
For safety, cut the power supply when not using this unit
for a long time.
Do not operate a damaged unit.
Precautions for use
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This unit is not built to be water or splash resistant,
and it cannot be used in conditions when the relative
humidity is high. Moreover, use in atmospheres with
corrosive gases should be avoided.
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Be careful to prevent water, oil and other substances
from getting on the unit.
o
Avoid use in conditions where condensation could occur.
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Connect cores to the load cell after discharging (eliminating)
static electricity from your body.
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If the surrounding temperature changes suddenly, the
values output by this device could become unstable,
making accurate measurement impossible.
(This could occur, for example, in a location blown by
warm or cold air.)
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Conduct load calibrations periodically.
Installation procedures
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Tighten with the torque shown in the table below to prevent
the load button from becoming loose. When removing
an attached load button, be sure not to apply torque
that exceeds the tightening torque shown in the table.
Rated capacity Tightening torque
Load button
screw dimension
500 N – 3 kN
13 N·m
M8
5 kN – 10 kN
6 N·m
M6
A thread-locking fluid can be used on the screw, but be
aware that this could prevent removal of the load button.
o
Install this unit in a place where the structure is level
and can sufficiently bear the load being used.
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Screw holes for attachment are located in four places.
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The screw hole dimensions are shown in the table below.
Model
Screw hole
dimensions
Tightening
torque
TC-LPR(T)-G6
M4 (depth 4)
3.5 N·m
Use class 12.9 strength screws.
ATTENTION
When using TC-LPR(T)500N-G6 – TC-LPR(T)3KN-G6
As shown in the illustration below, there is a 0.5mm level
change between the outer circumference and the central
screw portion of the load cell attachment surface.
For this reason, be aware that if the attachment surface is
uneven, rough, dusty or dirty, for example, and it contacts
the bottom of the unit, inaccurate measurement results
could occur at loads lower than the rated capacity.
0.5
Dimensions in millimeters (mm)
When using TC-LPR(T)5KN-G6 – TC-LPR(T)10KN-G6
As shown in the illustration below, there is a 1mm level
change between the outer circumference and the central
screw portion of the load cell attachment surface.
For this reason, be aware that if the attachment surface is
uneven, rough, dusty or dirty, for example, and it contacts
the bottom of the unit, inaccurate measurement results
could occur at loads lower than the rated capacity.
Dimensions in millimeters (mm)
(1)
Installation
surface
Do not use the central
indentation as an
installation surface.
Precautions when placing loads on the
unit
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Make sure the load is perpendicular to the surface to
which this unit is attached.
o
Apply the load so that it is centered on the center of
the unit. If the load is not centered (eccentric load),
twisting, for example, and measurement errors could
occur. This could even result in damage.
F1
F2
F
F is the correct load orientation
F1 is an eccentric inclined load
F2 is an eccentric load
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Be careful to avoid turning and twisting from lateral
loads. This could cause troubles like those described
in the previous item.
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Be careful to avoid applying loads that exceed the
rated capacity. In particular, use caution when there are
vibrations because loads that exceed the rated capacity
could occur due to sympathetic vibrations, for example.
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If the load receiving area is contacted by something that
is at a different temperature and the load is increased,
the values output by this device could become unstable,
making accurate measurement impossible.
In such a case, wait until the temperature difference
ceases to exist before measuring.
Electrical connection of load cell with
built-in TEDS
o
Connect as shown in the illustration below. Incorrect
connections could result in inability to balance and
in errors occurring in the output voltage when loads
are applied.
Using a cable with bare lead wires
Red
Input (+)
Black
Output (−)
Blue
Input (−)
White Output (+)
Orange TEDS signal (+)
Green TEDS signal (COM)
Yellow Shield
TEDS
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This unit has a built-in TEDS function.
The orange and green cores in the cable and the F and
G pins in the connector are wired for TEDS.
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This unit does not support remote sensing.
Since products that support remote sensing use the
same cables and connector pins as TEDS, be careful not
to try mistakenly to use these pins for remote sensing.
See the operation manuals of indicators and strain
amps that support remote sensing for how to connect
sensors with those units.
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The shield is not connected to the main body of this
product. For this reason, if grounding is necessary because
of external noise, for example, arrange to ground the
shield to a part other than the body of this unit.
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Since the cable is directly connected to this unit, use
a specialized cable to increase the length. (Please
consult with us.)
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When conducting insulation resistance tests, limit them
to the red, black, blue and white cores. Do not apply to
the TEDS cores (orange and green).
