HBM RSCC Series User manual

A3018-3.2 en/de/fr
Load cells
Wägezellen
Pesons
RSCC
Mounting Instructions
Montageanleitung
Notice de montage

English Page 3 - 20...............................................
Deutsch Seite 21 - 38.............................................
Français Page 39 - 53.............................................

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Contents Page
English
Safety instructions 4..............................................
1 Scope of supply 7.............................................
2 Application instructions 7......................................
3 Structure and principle of operation 8...........................
4 Conditions on site 8...........................................
4.1 Ambient temperature 8.....................................
4.2 Moisture and other ambient conditions 8......................
4.3 Deposits 8................................................
5 Mechanical installation 10.......................................
5.1 Mounting instructions 10.....................................
5.2 Load application 11.........................................
5.3 Mounting with knuckle eyes 11...............................
6 Electrical connection 14.........................................
6.1 Connection in a six‐wire configuration 14......................
6.2 Connection in a four‐wire configuration 14.....................
6.3 Extension cable 15.........................................
6.4 Cable protection 15.........................................
6.5 EMC protection 15..........................................
7 Specifications 17...............................................
8 Dimensions 18.................................................
8.1 Load cells with maximum capacity 50 kg to 200 kg 18...........
8.2 Load cells with maximum capacity range 500 kg to 5 t 19........
8.3 Mounting aids 20...........................................

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Safety instructions
In cases where a breakage would cause injury to persons or damage to
equipment, the user must take appropriate safety measures (e.g. safety
devices to protect against falls, collapses or overloads). For safe and
trouble‐free operation, transducers must not only be correctly transported,
stored, sited and mounted but must also be carefully operated and
maintained.
It is essential to comply with the relevant accident prevention regulations. In
particular you should take into account the limit loads quoted in the
specifications.
Designated use
The RSCC type transducers are designed for metrological applications. Use
for any additional purpose shall be deemed to be not as intended.
In the interests of safety, transducers should only be operated as described in
the Mounting Instructions. It is also essential to comply with the legal and
safety requirements for the application concerned during use. The same
applies to the use of accessories.
Load cells are not safety elements within the meaning of designated use. For
safe and trouble‐free operation, transducers must not only be correctly
transported, stored, sited and mounted but must also be carefully operated
and maintained. Comply with the safety instructions for explosion protection,
where necessary.
General dangers of failing to follow the safety instructions
The transducers are state‐of‐the‐art and reliable. Transducers can give rise to
residual dangers if they are inappropriately installed and operated by
untrained personnel.
Everyone involved with siting, starting‐up, maintaining or repairing a
transducer must have read and understood the mounting instructions and in
particular the technical safety instructions.
Residual dangers
The scope of supply and performance of the transducer covers only a small
area of weighing technology. In addition, equipment planners, installers and
operators should plan, implement and respond to the safety engineering
considerations of the weighing technology in such a way as to minimize
residual dangers. On‐site regulations must be complied with at all times.
Reference must be made to the residual dangers associated with the
weighing technology.

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Residual dangers are indicated in these mounting instructions by the symbols
described below.
The marking below warns of a potentially dangerous situation in which failure
to comply with safety requirements can result in death or serious physical
injury.
WARNING
Description of a potentially dangerous situation
Measures to avoid/prevent the danger
The marking below draws your attention to a situation in which failure to
comply with safety requirements can lead to damage to property.
NOTE
Description of a situation that can lead to damage to property
Waste disposal
In accordance with national and local environmental protection and material
recovery and recycling regulations, old transducers that can no longer be
used must be disposed of separately and not with normal household waste.
If you need more information about waste disposal, please contact your local
authorities or the dealer from whom you purchased the product.
Unauthorized conversions and modifications are prohibited
Transducers must not be modified from the design or safety engineering point
of view except with our express agreement. Any modification shall exclude all
liability on our part for any damage resulting therefrom.
Qualified personnel
Qualified personnel are persons who have sufficient knowledge in the
respective field due to their technical training and experience and who are
familiar with the relevant national health and safety regulations, accident
prevention rules, technology guidelines and best practices. They must be
capable of securely evaluating the results of their work and they must be
familiar with the contents of these mounting instructions.

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Accident prevention
The prevailing accident prevention regulations must be taken into account,
even though the breaking load is well in excess of the maximum capacity. In
particular you should take into account the following as quoted in the
specifications:
- Limit load (EL)
- Breaking load (Ed)
- Relative permissible oscillatory stress (Fsrel)

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1 Scope of supply
1 RSCC load cell
1 RSCC mounting instructions
Accessories (not included in the scope of supply):
Knuckle eyes for mounting the load cells
RSCC with maximum capacities 50 kg to 100 kg
Order no. 1-U1R/200KG/ZGW
RSCC with maximum capacities 200 kg to 1 t
Order no. 1-U2A/1T/ZGUW
RSCC with maximum capacities 2 t to 5 t
Order no. 1-U2A/5T/ZGUW
2 Application instructions
The RSCC type series load cells are suitable for measuring axial loads in the
tensile direction. Because they provide highly accurate static and dynamic
load measurements, they must be handled very carefully. Particular care must
be taken when transporting and installing the devices. Dropping or knocking
the transducers may cause permanent damage.
The Specifications section on page 17 lists the permissible limits for
mechanical, thermal and electrical stress. It is essential that these are taken
into account when planning the measuring set‐up, during installation and,
ultimately, during operation.
WARNING
Incorrect handling or installation can lead to loss of explosion
protection
It is essential to comply with the relevant installation regulations during
installation.
There must be compliance with the installation conditions cited in the
Certificate of Conformity and/or the Type Examination Certificate.

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3 Structure and principle of operation
The measuring element is a steel loaded member to which strain gauges (SG)
are applied. The SG are arranged so that two are stretched and the other two
compressed when a load acts on the transducer.
4 Conditions on site
4.1 Ambient temperature
The temperature effects on the zero signal and on the sensitivity are
compensated.
To obtain optimum measurement results, the nominal (rated) temperature
range must be observed. Temperature‐related measurement errors are
caused by heating (e.g. radiant heat) or by cooling on one side. A radiation
shield and all‐round thermal insulation produce noticeable improvements, but
must not be allowed to form a force shunt.
4.2 Moisture and other ambient conditions
Series RSCC load cells are hermetically sealed and are therefore not at all
sensitive to humidity and moisture. The transducers attain protection class
IP68 as per DIN EN 60529 (test conditions: 100 hours under 1 m water
column). Nevertheless, the load cells must be protected against permanent
humidity and moisture.
The load cell must be protected against chemicals that could attack the
transducer body steel, or the cable. With stainless steel load cells, please
note that acids and all materials which release ions will also attack stainless
steels and their welded seams. Should there be any corrosion, this could
cause the load cell to fail. In this case, appropriate protective measures must
be implemented.
4.3 Deposits
Dust, dirt and other foreign matter must not be allowed to accumulate
sufficiently to divert some of the measuring force, thus invalidating the
measured value (force shunt).

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NOTE
Measurement errors may be the result if dust or dirt is deposited inside the
load cells. The relevant areas are marked by arrows in Fig. 4.1.
Fig. 4.1: Deposits at the marked areas must be avoided

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5 Mechanical installation
5.1 Mounting instructions
When mounting the load cells, consider the following factors:
The load cell must be handled carefully
The load cell must not be overloaded, not even briefly
Each load cell must be bridged with a copper wire either during or directly
after installation to prevent welding currents flowing over the load cell
Important
The cable fastening side of the transducer should always be connected
directly with the rigid customer‐side force transfer areas. Ensure that the cable
is laid so that, where possible, no force shunt is caused by the cable (e.g.
through the weight or stiffness of the cable).
Rigid
force transfer
Rigid
force transfer
correct incorrect
Fig. 5.1: Transducer orientation during installation
NOTE
Please note the maximum permissible load-carrying capacity of the loading
fittings and of the tension/compression bars, screws and knuckle eyes.

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5.2 Load application
The RSCC type series load cells can measure axial loads in the tensile
direction. Load is applied via two tapped holes. The loads must act as
precisely as possible in the load direction of the load cell. Torsional and
bending moments cause measurement errors and can permanently damage
the load cell. Interference effects must be absorbed by suitable construction
elements, whereby these elements must not absorb any loads in the load
direction of the load cell. HBM recommends the use of knuckle eyes for
connection without side force or moments. They are suitable for use with
quasi‐static loading (load cycles v10 Hz).
5.3 Mounting with knuckle eyes
Knuckle eyes prevent the application of torsional moments on the transducer
and also, when 2 knuckle eyes are used, bending moments, together with
lateral and oblique loadings.
Mount the knuckle eyes applying pre‐stressing to the transducer
(recommended mounting variant):
1. Unscrew the locknut up to the eye
2. Screw the knuckle eye into the transducer (note permissible thread reach)
3. Unscrew the knuckle eye 1 to 2 threads, and align it
4. Load the knuckle eye at 110% of the operating load in the tensile direction
5. Hand‐tighten locknut
6. Relieve the load
Alternatively, you can also mount the knuckle eyes by tightening the locknut of
the knuckle eye with a defined torque:
1. Unscrew the locknut up to the eye
2. Screw the knuckle eye into the transducer (note permissible thread reach)
3. Align the knuckle eye
4. Tighten the locknut with the torque given below
Maximum
capacity (kg) Load cell thread Tightening torque (NVm)
50 to 100 M8 15
200 to 1000 M12 50
2000 to 5000 M24x2 200

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NOTE
When locking, the tightening torque must not be shunted through the
transducer.
When using a knuckle eye, the following mounting dimensions apply:
Emin/Emax
Hmin/Hmax
MB
MB
Rigid
force transfer
Fig. 5.2: Installation with one knuckle eye
Maximum
capacity Knuckle eye Hmin Hmax Emin Emax MB (NVm)
50 kg 1-U1R/200KG/ZGW 86 90 4 8 15
100 kg 1-U1R/200KG/ZGW 86 90 4 8 15
200 kg 1-U2A/1T/ZGUW 122 131 11 20 50
500 kg 1-U2A/1T/ZGUW 123 131 11 19 50
1 t 1-U2A/1T/ZGUW 123 131 11 19 50
2 t 1-U2A/5T/ZGUW 166 182 13 29 200
5 t 1-U2A/5T/ZGUW 171 183 12 24 500

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When using two knuckle eyes, the following mounting dimensions apply:
Hmax/Hmin
Emin/Emax
MB
MB
Rigid
force transfer
Fig. 5.3: Installation with two knuckle eyes
Maximum
capacity Knuckle eye Hmin Hmax Emin Emax MB (NVm)
50 kg 1-U1R/200KG/ZGW 110 118 4 8 15
100 kg 1-U1R/200KG/ZGW 110 118 4 8 15
200 kg 1-U2A/1T/ZGUW 156 174 11 20 50
500 kg 1-U2A/1T/ZGUW 158 174 11 19 50
1 t 1-U2A/1T/ZGUW 158 174 11 19 50
2 t 1-U2A/5T/ZGUW 231 263 13 29 200
5 t 1-U2A/5T/ZGUW 241 265 12 24 500

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6 Electrical connection
The following can be connected for measurement signal conditioning:
Carrier‐frequency amplifiers
DC amplifiers
designed for strain gauge measurement systems.
The RSCC load cell is delivered with a six‐wire configuration.
6.1 Connection in a six‐wire configuration
(white)
(black)
(gray)
Excitation voltage ())
(green)
(red)
(-)
Excitation voltage (*)
Sense lead (*)
Measurement signal ())
(blue)
Sense lead ())
Measurement signal (*)
Shielding/drain wire, connected to enclosure ground
Fig. 6.1: RSCC pin assignment in a six‐wire circuit
With this cable assignment, the output voltage at the measuring amplifier is
positive in the tensile direction when the load cell is loaded.
The transducers are delivered with a 7.6 m cable with free ends as standard.
The transducer cable can be shortened as required if the transducer is
connected to an amplifier with a six‐wire configuration. RSCC type load cells
are also optionally available with 12 m and 20 m cable lengths.
The connection cable shielding is connected to the transducer housing.
Transducers with free cable ends must be fitted with connectors complying
with EMC guidelines. The shielding must be connected extensively. With other
connection techniques, an EMC‐proof shield should be applied in the wire
area and this shielding should also be connected extensively (also see HBM
Greenline Information, brochure i1577).
6.2 Connection in a four‐wire configuration
When load cells with a six‐wire configuration are connected to amplifiers with
a four‐wire configuration, the sense leads of the load cells must be connected
to the relevant excitation voltage leads: (+) with (+) marking and (-) with (-)
marking, see Fig. 6.1. This measure also reduces the cable resistance of the
excitation voltage leads However, there will be a voltage loss on the supply

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leads due to the cable resistance that is still present and not compensated for
by the six‐wire configuration. A large part of this loss can be eliminated by a
calibration, however, the temperature‐dependent part remains. The TKc value
given in the specifications for the transducer therefore does not apply for the
cable and transducer combination when connection is in a four‐wire
configuration, as here the cable percentage must be added.
6.3 Extension cable
The cable of a six‐wire load cell such as the RSCC can be extended with a
cable of the same type.
Only use shielded, low‐capacitance measurement cables for extension.
Ensure that connection is perfect, with a low contact resistance.
6.4 Cable protection
The transducers attain protection class IP68 as per DIN EN 60529. In
applications where the PVC cable of the load cell can be chemically or
mechanically attacked or destroyed, extra cable protection must be provided
by means of standard cable protection systems. The load cell can be fitted
with an adapter with an internal M12 thread (optional “with cable protection
system adapter" version) for mounting the screwed cable gland of the flexible
cable protection tubing. Fit the cable protection system as shown in Fig. 6.2.
Cable protection system* (provided by customer), comprising:
* Supplier such as Flexicon
(http://www.flexicon.uk.com)
Screwed cable gland*
Flexible cable protection tubing*
O‐ring (provided by customer)
Unscrew the M12 sleeve and replace
with an M12 threaded tube coupling
Fig. 6.2: Cable protection (implemented by the customer)
6.5 EMC protection
Electrical and magnetic fields often induce interference voltages in the
measuring circuit. Therefore:

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Use shielded, low‐capacitance measurement cables only (HBM cables
fulfill both conditions)
Do not route the measurement cables parallel to power lines and control
circuits. If this is not possible, protect the measurement cable with steel
conduits, for example
Avoid stray fields from transformers, motors and contact switches
Do not ground the transducer, amplifier and indicator more than once.
Connect all devices in the measuring chain to the same protective earth
conductor
To ensure the best EMC protection, the load cell, together with the connection
cable and the subsequent electronics, should be placed in a shielded housing.

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7 Specifications
Type RSCC
Accuracy class as per OIML R 60
No. of load cell verification intervals (nLC)
C3
3000
Maximum capacity (Emax)50 kg 100 kg 200 kg 500 kg 1 t 2 t 5 t
Minimum load cell verification
interval (vmin)% of Emax 0.0120
Nominal (rated) sensitivity (CN)mV/V 2
Sensitivity tolerance %"0.25
Zero signal mV/V 0 "0.1
Temperature coefficient of
sensitivity (TKC)1) % of Cn /
10 K
"0.0170 (20C to 40C)
"0.0110 (-10 C to 20C)
Temperature coefficient of zero
signal (TK0)
"0.0166
Rel. reversibility error (dhy)1)
% of Cn
"0.0166
Non‐linearity (dlin)1) "0.0166
Creep upon loading (dcr) over
30 min.
"0.0166
Input resistance (RLC) (nom.) 389 "15
Output resistance (R0)350 "1.5
Insulation resistance (Riso)G/100 V > 2
Reference excitation voltage
(Uref)
Nominal (rated) supply voltage
range (BU)
V
5
0.5 to 12
Nominal (rated) ambient
temperature range (BT)
C
-10 to +40
Operating temp. range (Btu)-30 to +70
Storage temperature range (Btl)-50 to +85
Reference temperature (tref)22
Limit load (EL)
% of Emax
150
Breaking load (Ed)200 300 200
Relative perm. vibrational
stress (Fsrel) (oscillation width
as per DIN 50100)
70
Nom. (rated) displacement at
max. capacity (snom) "0.05 mm
mm 0.35 0.4 0.35 0.1 0.2 0.2 0.4
Weight (G), approx. kg 0.7 1 1.4 1.7 2.2
Degree of protection per EN 60
529 (IEC 529) IP 68 (test conditions 1 m water column / 100 h)
Cable length, six‐wire
configuration 7.6 m as standard
Material: Measuring body
Cable entry
Cable sheath
stainless steel 2)
stainless steel / neoprene
PVC
1) The values for non‐linearity (dlin), relative reversibility error (dhy) and temperature coefficient of sensitivity (TKC) are recommended values.
The sum of these values is within the cumulated error limits according to OIML R60.
2) As per EN 10088-1.
See data sheet for options.

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8 Dimensions
8.1 Load cells with maximum capacity 50 kg to 200 kg
Dimensions (in mm; 1 mm = 0.03937 inches)
Without adapter for cable
protection system
With adapter for cable
protection system
Length 7.6 m
Outside diameter 5 mm
Material PVC
Cable:
D
M
M
A
B
C
13
24
20
M12x1.5
Maximum capacity A B C D M
50 kg 62 50.8 25.4 31 M8
100 kg 62 50.8 25.4 31 M8
200 kg 87.3 57.2 28.6 43.7 M12

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8.2 Load cells with maximum capacity range 500 kg to 5 t
Dimensions (in mm; 1 mm = 0.03937 inches)
Without adapter for cable
protection system
With adapter for cable
protection system
Length 7.6 m
Outside diameter 5 mm
Material PVC
Cable:
A
M
M
D
C
B
13
E
20
M12x1.5
Maximum
capacity A B C D E M
500 kg 87.3 57.2 28.6 43.7 31 M12
1 t 87.3 57.2 28.6 43.7 31 M12
2 t 100 69.8 34.9 50 31 M24x2
5 t 100 76.2 38.1 50 36.5 M24x2

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8.3 Mounting aids
Dimensions (in mm; 1 mm = 0.03937 inches)
Tempered steel, galvanized
roller bearing steel
PTFE/bronze corrugated foil
Material:
a.f.
M
A
F
G
D
H
W
B
X
Center
bearing
collar
Maximum
capacity Knuckle eye Weight (kg) AjB H7 D F G H M W X a.f.
50 kg to
100 kg 1-U1R/200KG/ ZGW 0.05 15 8 24 32 44 9 M8 12 6.5 13
200 kg to
1 t 1-U2A/1T/ ZGUW 0.1 33.5 12 32 54.5 70.5 12 M12 16 7 19
2 t to 5 t 1-U2A/5T/
ZGUW 0.4 57.5 25 60 94.5 124.5 22 M24x2 31 10 36
The permissible mechanical stresses of the knuckle eyes recommended by
HBM are always at least as high as the permissible values given for the load
cells.