Minebea Intec PR 6207 User manual

Beam Type Load Cell PR 6207
Installation Manual
Translation of the Original Installation Manual 9499 053 17400 Edition 1.10.0 09/30/2022
Minebea Intec GmbH, Meiendorfer Str. 205 A, 22145 Hamburg, Germany
Phone: [phone] Fax: [phone]

Foreword
Must be followed!
Any information in this document is subject to change without notice and does not represent a commitment on
the part of Minebea Intec unless legally prescribed. This product should only be operated/installed by trained
and qualified personnel. In correspondence concerning this product, the type, name, and release number/serial
number as well as all license numbers relating to the product have to be cited.
Note
This document is partially protected by copyright. It may not be changed or copied, and it may not be used
without purchasing or written permission from the copyright owner (Minebea Intec). The use of this product
constitutes acceptance by you of the abovementioned provisions.

Table of contents
1 Introduction......................................................................................................................................... 3
1.1 Read the manual......................................................................................................................................................... 3
1.2 This is what operating instructions look like .......................................................................................................... 3
1.3 This is what lists look like........................................................................................................................................... 3
1.4 This is what menu items and softkeys look like..................................................................................................... 3
1.5 This is what the safety instructions look like.......................................................................................................... 3
1.6 Hotline.......................................................................................................................................................................... 4
2 Safety instructions...............................................................................................................................5
2.1 General notes .............................................................................................................................................................. 5
2.2 Intended use................................................................................................................................................................ 5
2.3 Initial inspection.......................................................................................................................................................... 5
2.4 Before operational startup........................................................................................................................................ 5
3 Recommendations for installation .......................................................................................................6
3.1 Load cell and constrainer arrangement..................................................................................................................6
3.2 Selecting maximum capacity.................................................................................................................................... 7
4 Specifications ......................................................................................................................................8
4.1 Equipment supplied with the load cell....................................................................................................................8
4.2 General information...................................................................................................................................................8
4.3 Possible marking of the load cell for the Ex area ..................................................................................................8
4.4 Dimensions .................................................................................................................................................................. 9
4.5 Ordering information.................................................................................................................................................9
4.6 Technical data ........................................................................................................................................................... 10
4.7 PR 6007/00 Mounting kit........................................................................................................................................12
4.7.1 Setting up the PR 6007/00 mounting kit ...................................................................................................12
4.7.2 Dimensions of PR 6007/00 mounting kit...................................................................................................13
5 Installation......................................................................................................................................... 14
5.1 Safety instructions.................................................................................................................................................... 14
5.2 Mounting without mounting kit..............................................................................................................................15
5.3 Mounting with PR 6007/00 mounting kit.............................................................................................................15
5.3.1 List of items......................................................................................................................................................15
5.3.2 Assembly ......................................................................................................................................................... 16
5.4 Configuring overload protection ............................................................................................................................17
6 Connection......................................................................................................................................... 18
6.1 General information................................................................................................................................................. 18
6.2 Load cell ..................................................................................................................................................................... 19
6.3 Cable connections .................................................................................................................................................... 19
Beam Type Load Cell PR 6207 Table of contents
Minebea Intec EN-1

7 Preparing for calibration.....................................................................................................................21
7.1 General notes .............................................................................................................................................................21
7.2 Smart Calibration.......................................................................................................................................................21
7.3 Mechanical height adaptation.................................................................................................................................21
8 Troubleshooting ................................................................................................................................ 22
8.1 General Notes............................................................................................................................................................22
8.2 Visual inspection.......................................................................................................................................................22
8.3 Metrological controls ...............................................................................................................................................22
8.3.1 Checking the zero output signal of the load cell.......................................................................................22
8.3.2 Checking the strain gauge bridge of the load cell ....................................................................................22
8.3.3 Checking the insulation impedance of the load cell.................................................................................23
8.3.4 Checking the insulation impedance of the connecting cable.................................................................23
9 Maintenance/repairs/cleaning...........................................................................................................24
9.1 Maintenance..............................................................................................................................................................24
9.2 Repairs........................................................................................................................................................................24
9.3 Cleaning .....................................................................................................................................................................24
10 Disposal ............................................................................................................................................. 25
11 Spare parts and accessories ............................................................................................................... 26
11.1 Replacement parts ...................................................................................................................................................26
11.2 Accessories ................................................................................................................................................................26
11.2.1 Mounting kits..................................................................................................................................................26
11.2.2 Connecting cables..........................................................................................................................................26
11.2.3 Cable junction boxes .....................................................................................................................................26
12 Certificates ........................................................................................................................................ 27
12.1 MIN16ATEX001X .......................................................................................................................................................28
12.2 MEU19019 ..................................................................................................................................................................30
12.3 RU Д-DE.A301.B.05345 ...........................................................................................................................................36
12.4 1.13-93.327 ................................................................................................................................................................. 37
Beam Type Load Cell PR 6207 Table of contents
EN-2 Minebea Intec

1 Introduction
1.1 Read the manual
-Please read this manual carefully and completely before using the product.
-This manual is part of the product. Keep it in a safe and easily accessible location.
1.2 This is what operating instructions look like
1. - n. are placed before steps that must be done in sequence.
1.3 This is what lists look like
-indicates an item in a list.
1.4 This is what menu items and softkeys look like
[ ] frame menu items and softkeys.
Example:
[Start]- [Applications]- [Excel]
1.5 This is what the safety instructions look like
Signal words indicate the severity of the danger involved when measures for preventing
hazards are not followed.
DANGER
Warning of personal injury
DANGER indicates death or severe, irreversible personal injury which will occur if the
corresponding safety measures are not observed.
Take the corresponding safety precautions.
WARNING
Warning of hazardous area and/or personal injury
WARNING indicates that death or severe, irreversible injury may occur if appropriate
safety measures are not observed.
Take the corresponding safety precautions.
CAUTION
Warning of personal injury.
CAUTION indicates that minor, reversible injury may occur if appropriate safety
measures are not observed.
Take the corresponding safety precautions.
is placed before a step.
describes the result of a step.
1 Introduction Beam Type Load Cell PR 6207
Minebea Intec EN-3

NOTICE
Warning of damage to property and/or the environment.
NOTICE indicates that damage to property and/or the environment may occur if
appropriate safety measures are not observed.
Take the corresponding safety precautions.
Note:
User tips, useful information, and notes.
1.6 Hotline
Phone: [phone]
Fax: [phone]
eMail: [email protected]
Beam Type Load Cell PR 6207 1 Introduction
EN-4 Minebea Intec

2 Safety instructions
2.1 General notes
NOTICE
Warning of damage to property and/or the environment.
The product was in perfect condition with regard to safety features when it left the
factory.
To maintain this condition and to ensure safe operation, the user must follow the
instructions and observe the warnings in this manual.
2.2 Intended use
The load cell PR 6207 has been designed especially for weighing process vessels and use
in beltweighers and platform weighers.
When combined with Mounting Kit PR 6007, it compensates for movements caused by
mechanical or thermal contraction or expansion of the vessel and/or the supporting
construction.
The load cell PR 6207 may only be used as intended for weighing tasks.
The dimensions of all mounting and structural components must be calculated so that
sufficient overload capacity is ensured for all loads which may occur while taking the
relevant standards into account. If cracks in the suspension, breakage of the load cell or
similar could result in injury or damage to people, animals, or goods, additional
safeguards against falling must be installed.
Installation and repair work must only be carried out by expert/qualified personnel.
The load cell reflects the state of the art. The manufacturer does not accept any liability
for damage caused by third-party system components or due to incorrect use of the
product.
2.3 Initial inspection
Check the contents of the consignment for completeness. Check the contents visually to
determine whether any damage has occurred during transport. If there are grounds for
rejection of the goods, a claim must be filed with the carrier immediately. The
Minebea Intec sales or service organization must also be notified.
2.4 Before operational startup
NOTICE
Perform visual inspection.
Before operational startup as well as after storage or transport, inspect the load cell
visually for signs of mechanical damage.
2 Safety instructions Beam Type Load Cell PR 6207
Minebea Intec EN-5

3 Recommendations for installation
3.1 Load cell and constrainer arrangement
Examples:
-The supporting construction of the scale (and thus the load cells) and the vessel must
be stable enough to withstand the specified loads, horizontal (check with spirit level!)
and flat.
-Vessels should preferably be suspended by 3 load cells (see figure).
This minimizes the interference between pendulum movement and rotation and
ensures uniform load distribution.
-Suspensions in weighing installations with more than 3 load cells are statically
indeterminate and should be avoided!
-The center of gravity of the weighing object must be lower than the suspension
points.
-Suspensions on the long cable (or similar) reduce the potential diagonal pull.
-The suspension points must be on the same level to ensure uniform load distribution.
-The output signal of the load cells (with dead load) must be equal.
-The load cell base must be horizontal, flat, and clean.
-Transverse and/or horizontal forces and torques exceeding the permissible limits are
disturbances which can generate measuring errors and, in the worst case, may
damage the load cell.
-If the object to be measured is constrained properly, damage and measuring errors
can be prevented without affecting the required space for movement in the direction
of the measurement.
Consideration should be given to the fact that thermal expansion and contractions
may constrict the required space for movement of the object to be weighed and
could thereby lead to significant falsification of the measuring results.
Therefore, special attention should be paid to the design, arrangement, and
condition of the constrainers.
-A suspension on 3 or 4 load cells with a relatively short pendulum length can do
without constraining and merely have a horizontal boundary.
This is particularly true when hardly any transverse forces occur, the center of gravity
of the object is lower than the suspension point, and/or when horizontally routed
Beam Type Load Cell PR 6207 3 Recommendations for installation
EN-6 Minebea Intec

incoming lines coupled to the object at the level of the suspension point bear the
constraining work. The incoming lines must be horizontally rigid and vertically
flexible in this case.
-The abutting face of the load end is marked with an arrow. The arrow indicates the
direction of the load, which must be exactly perpendicular and axial to the borehole.
Tilted or eccentric load applications and transverse loads lead to measuring errors.
3.2 Selecting maximum capacity
If there is a risk of the safe load limit Elim being exceeded (even only temporarily, e.g. by
falling loads), mechanical limiting in load direction is required.
-Loads exceeding the safe load limit Elim of the load cell may change its characteristics
or damage the load cell.
-Loads exceeding the destructive load Edof the load cell can led to its mechanical
destruction.
3 Recommendations for installation Beam Type Load Cell PR 6207
Minebea Intec EN-7

4 Specifications
4.1 Equipment supplied with the load cell
No. Description
1 Flexible copper strap
2 Load cell
3 Installation Manual
4.2 General information
Load cell material Stainless steel 1.4122 acc. to DIN EN 10088-3
Bellows material Stainless steel 1.4541 acc. to DIN EN 10088-3
Protection against environmen-
tal influences
Hermetically sealed by welding.
Protection classes in compliance with IEC 529 or DIN EN 60529
IP66/IP68:
Dust-proof and leak-tight against water, with harmful effects when immer-
sed, (1.5 m water depth, 10,000 h).
Explosion:
Suitable for explosion subgroup IIC and IIIC.
Cable bend radius ≥60 mm (fixed installation)
≥120 mm (flexible installation)
Cable sheath material PVC
Cable sheath color Gray (standard version)
4.3 Possible marking of the load cell for the Ex area
Zone Marking Certificate no. for
2 II 3G Ex nA IIC T6 Gc MIN16ATEX001X all PR 6207
22 II 3D Ex tc IIIC T85 °C Dc MIN16ATEX001X all PR 6207
Beam Type Load Cell PR 6207 4 Specifications
EN-8 Minebea Intec

4.4 Dimensions
all dimensions in mm
4.5 Ordering information
Model Max. capacity
Emax
Type
PR 6207/11 10 kg ..D1/C3
PR 6207/21 20 kg ..D1/C3
PR 6207/51 50 kg ..D1/C3
PR 6207/12 100 kg ..D1/C3
PR 6207/22 200 kg ..D1/C3
4 Specifications Beam Type Load Cell PR 6207
Minebea Intec EN-9

4.6 Technical data
Designation Description Abbr. D1 C3 Unit
Accuracy class 0.05 0.017 % Emax
Minimum dead load lowest limit of specified measuring ran-
ge
Emin 0 0 % Emax
Maximum capacity highest limit of specified measuring
range
Emax See Chapter 4.5
Safe load limit maximum load without irreversible da-
mage
Elim 150 150 % Emax
Destructive load danger of mechanical destruction Ed>300 >300 % Emax
Safe load limit (X di-
rection)
upper limit for static load in the X direc-
tion
Elqx 200 200 % Emax
Safe load limit (Z di-
rection)
upper limit for static load in the Z direc-
tion
Elqz 200 200 % Emax
Minimum LC verifica-
tion
minimum load cell scale interval, vmin =
Emax/Y
Y 2778 11111
Rated output relative output at maximum capacity Cn2 2 mV/V
Tolerance on rated
output
permissible deviation from rated out-
put Cn
dc<(+1.0
-0.1)
<0.1 % Cn
Zero output signal load cell output signal under unloaded
condition
Smin 0 ±1.0 0 ±1.0 % Cn
Repeatability max. change in load cell output for
repeated loading
ɛR<0.03 <0.01 % Cn
Creep max. change of output signal at Emax
during 30 minutes
dcr <0.05 <0.017 % Cn
Non-linearity1) deviation from best straight line th-
rough zero
dLin <0.05 <0.018 % Cn
Hysteresis1) max. difference in LC output between
loading and unloading
dhy <0.05 <0.017 % Cn
Temperature effect
on Smin
max. change of Smin in BTTKSmin <0.05 <0.013 % Cn/10 K
Temperature effect
on C1)
max. change of C in BTTKC<0.05 <0.008 % Cn/10 K
Input impedance between supply terminals RLC 350 …480 350 …480 Ω
Output impedance between measuring terminals RO356 ±0.2 356 ±0.2 Ω
Insulation impedance between measuring circuit and housing,
UDC = 100 V
RIS >5000 >5000 MΩ
Recommended sup-
ply voltage
to hold the specified performance Bu4…12 4…12 V
Beam Type Load Cell PR 6207 4 Specifications
EN-10 Minebea Intec

Designation Description Abbr. D1 C3 Unit
Max. supply voltage permissible for continuous operation
without damage
Umax 18 18 V
Nominal ambient
temp. range
to hold the specified performance BT-10…+40 -10…+40 °C
Usable ambient temp.
range
permissible for continuous operation
without damage
BTu -30…+70 -30…+70 °C
Storage temperature
range
without electrical and mechanical stress BTi -50…+85 -50…+85 °C
Vibration resistance resistance against oscillations
(IEC 60068-2-6-Fc)
20 g, 100 h,
10…150 Hz
Nominal deflection elastic deformation under maximum ca-
pacity
Snom 0.3…0.4 0.3…0.4 mm
1) The data for non-linearity (dLin), hysteresis (dhy) and and temperature effect on C (TKC)
are typical values.
For OIML R60 or NTEP approved load cells the sum of these values is within the per-
missible cumulative error limits.
Definitions acc. to OIML R60
The technical data given are intended solely as a product description and should not be
interpreted as guaranteed properties in the legal sense.
4 Specifications Beam Type Load Cell PR 6207
Minebea Intec EN-11

4.7 PR 6007/00 Mounting kit
4.7.1 Setting up the PR 6007/00 mounting kit
Note:
The mounting kit is not included in the equipment supplied with your load cell.
Order no. of PR 6007/00 mounting kit, see Chapter 11.2.1.
The use of the PR 6007/00 mounting kit enables easy and safe suspension of the
weighing object.
The stable cover (18) protects the thin-walled bellows sheath. By turning the cover 180°,
the load application point can be either in the protected area or freely accessible.
The pre-stretched steel cable suspension puts the load in a stable position and
counteracts lateral forces and torques. Conical seat (11) and rounded washer (12) minimize
the risk of the rope (7) jamming at the suspension.
An adjustable overload protection (2, 3) protects the load cell from damage due to
overload.
Beam Type Load Cell PR 6207 4 Specifications
EN-12 Minebea Intec

4.7.2 Dimensions of PR 6007/00 mounting kit
all dimensions in mm
4 Specifications Beam Type Load Cell PR 6207
Minebea Intec EN-13

5 Installation
5.1 Safety instructions
NOTICE
Welding or lightning strike current flowing through the cell can damage it.
All electrical welding on the weighing system must be finished before mounting the load
cells.
When installing the load cell, immediately bypass the load cell with the flexible
copper strap provided for this purpose (included in the equipment supplied, see
Chapter 4.1).
During any additional electrical welding work near the load cell:
-Disconnect the load cell cables.
-Bypass the load cell using the flexible copper strap.
-Make sure that the grounding clamp of the welding set is fitted as closely as possible
to the welding joint.
The following must be observed during installation:
-Do not lift or transport the load cell by pulling on the cable.
-Avoid shock stress (falling down, hard shocks).
-The metal bellows is thin for metrological reasons. Any damage can quickly lead to
measuring errors.
-The load must act in the measuring direction of the load cell (arrow on the face of the
load cell).
NOTICE
Changes of temperature >15 K/h may influence the measuring accuracy.
Make sure to protect the load cells from direct heating or cooling effects (sun, wind,
heat radiation, fan heaters), e.g., heat protection screens or heat protection
housings are to be installed if necessary.
NOTICE
Force shunts may cause measuring errors.
All incoming and outgoing lines (hoses, pipes, cables) must be coupled to the
measured object as flexibly as possible.
Beam Type Load Cell PR 6207 5 Installation
EN-14 Minebea Intec

5.2 Mounting without mounting kit
If the load cell is mounted without the mounting kit, the cell must be screwed onto a
corresponding holder in accordance with the load direction (arrow on the face of the load
cell).
The following fastening elements must be used:
Screw Spring washer Washer Tightening torque
M8×35 ISO 4017-A2-70 A8 DIN 127-V2A A8 ISO 7092-V2A 16.5 Nm
M8×35 ISO 4017-8.8 A8 DIN 127-8.8 A8 ISO 7092-8.8 24.0 Nm
If the load cell is in the hazardous area (no protection from entering, blows, falling solid
objects), the bellow must be protected by a cover. The bellow sheath must have free
space on all sides.
5.3 Mounting with PR 6007/00 mounting kit
5.3.1 List of items
5 Installation Beam Type Load Cell PR 6207
Minebea Intec EN-15

No. Description
1 Base plate
2 M6 locking screw
3 M6 nut
4 Benchtop
5 Flexible copper strap
7 Steel cable
9 M8 nut
10 Cotter pin 2×16
11 Conical seat
12 Rounded washer
13 M8 crown nut
14 M8 nut
15 M8×35 screw
16 B8.4 spring washer
17 8.4 washer
18 Dust cover
19 M6×10 screw
20 B6.2 spring washer
5.3.2 Assembly
Note:
Positions, see Chapter 5.3.1.
Fine adjustment of the overload protection is performed after installation (see
Chapter 5.4).
Make sure that the load application borehole of the load cell aligns with the cable
grommet borehole.
For security reasons, the base plate must be screwed on with four screws through the
boreholes provided!
1. Screw overload protection (2, 3) up to where X = 19.6 mm, i.e.the locking screw must
not touch the load cell nor protrude from below the base plate (1).
2. Clean all supporting surfaces of benchtop (4) and load cell and replace the load cell
according to the load direction (arrow on the face of the load cell).
3. Tighten the screws and (15) with spring washer (16) and washer (17) with a wrench
(torque approx. 2.5 kN) and attach and screw on protective cover (19, 20).
4. Make sure that the contact surface of the support structure is clean, flat and level (use
a spirit level).
5. Only then screw on the base plate (1) of the PR 6007/00 with the support structure.
Beam Type Load Cell PR 6207 5 Installation
EN-16 Minebea Intec

Ensure correct positioning of the conical seat (11) and rounded washer (12).
The flexible copper strap must not create a force shunt.
5.4 Configuring overload protection
Note:
Positions, see Chapter 5.3.1.
It is recommended to monitor the connected display device to ensure that the
measured value does not change during configuration and locking.
6. Lift up the weighing object (e.g. vessel) and attach the cable set (7…14, 17).
7. Secure the nut (13) with the self-locking nut (14).
8. The crown nut (9) must be secured with the cotter pin (10).
9. If the weighing object is suspended on several load cells, the individual suspension
heights must be adjusted with the nut (13) so that the object is suspended exactly
horizontally or the load cells have the same output voltage.
10. The flexible copper strap (5) is intended to bridge the load cell electrically. Attach the
loose end of the measurement object as close as possible to the point of suspension.
1. Load the load cell with 130% of the maximum gross load to be weighed on the
weighing cell (but not more than 130% of the nominal load of the load cell).
2. Hand-tighten the locking screw (2) against the load cell and lock using the nut (3).
5 Installation Beam Type Load Cell PR 6207
Minebea Intec EN-17

6 Connection
6.1 General information
-Protect the cable ends against contamination. Moisture must not get into the open
end of the cable.
-Do not shorten the load cell connecting cable. Connect the prepared cable end and
roll up the remaining cable.
-The cable screen may be connected only to the connecting terminals of the indicator.
-Keep the load cell cables away from power cables.
-The distance between measurement cables and power cables and/or components
under high voltage should be at least 1 m (reference value).
-We recommend laying the load cell cables in separate cable trays or armored steel
pipes.
-Power cables should be crossed at right angles while taking into account the
minimum distance of 1 m (reference value).
Note:
If hum interference occurs, the cable screens should only be connected on one side.
Depending on the design of the cable junction box used, either the jumper J3 must be
removed or the cable screens must be disconnected from the terminal contacts
highlighted in yellow.
WARNING
When installing in potentially explosive atmospheres:
It is imperative that you follow the application-dependent installation instructions!
Always check whether it is permissible to bilaterally connect the screens to the
equipotential bonding.
Beam Type Load Cell PR 6207 6 Connection
EN-18 Minebea Intec