HBM PW15iA User manual

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PW15iA

Hottinger Baldwin Messtechnik GmbH
Im Tiefen See 45
D-64239 Darmstadt
Tel. [phone]
Fax [phone]
[email protected]
www.hbm.com
Mat.: 7-2002.4359
DVS: A4359-1.0 HBM: public
1.2016
EHottinger Baldwin Messtechnik GmbH.
Subject to modifications.
All product descriptions are for general information only.
They are not to be understood as a guarantee of quality or
durability.
Änderungen vorbehalten.
Alle Angaben beschreiben unsere Produkte in allgemeiner
Form. Sie stellen keine Beschaffenheits- oder Haltbarkeits
garantie dar.
Sous réserve de modifications.
Les caractéristiques indiquées ne décrivent nos produits
que sous une forme générale. Elles n'impliquent aucune
garantie de qualité ou de durablilité.

Mounting Instructions | Montageanleitung |
Notice de montage
English Deutsch Français
PW15iA
Digital Load Cell

2A4359-1.0 HBM: public PW15iA
English
1 Safety instructions 4........................................
2 Markings used 8............................................
2.1 Symbols on the transducer 8..................................
2.2 The markings used in this document 8..........................
3 Structure and mode of operation 10...........................
3.1 Layout 11....................................................
3.2 Signal conditioning 12.........................................
3.3 Adaptive interference suppression 13............................
3.4 Inputs and outputs 14.........................................
3.4.1 Trigger function 14............................................
3.4.2 Filling and dosing 15..........................................
3.4.3 Limit value function 15.........................................
3.4.4 Extreme value functions 15....................................
4 Conditions on site 16........................................
4.1 Protection against corrosion 16.................................
4.2 Deposits 17..................................................
5 Mechanical installation 18....................................
5.1 Important precautions during installation 18......................
5.2 Mounting and load application 19...............................
5.3 Dimensions 21...............................................
6 Electrical connection 22......................................
6.1 Cable laying 22...............................................
6.2 Pin assignment 22............................................
6.3 Supply voltage 24.............................................
6.4 Digital inputs 25..............................................
6.5 Digital outputs 26.............................................

PW15iA A4359-1.0 HBM: public 3
7 Interfaces 27................................................
7.1 RS‐485 4‐wire interfaces (UART) 27............................
7.2 CANopen interface 29.........................................
7.3 DeviceNet interface 30........................................
8 Operation via software 32....................................
9 Waste disposal and environmental protection 32..............

Safety instructions
4A4359-1.0 HBM: public PW15iA
1 Safety instructions
Appropriate use
Transducers of the PW15iA type series are designed
solely for technical weighing applications within the appli
cation limits detailed in the specifications. Any other use
is not appropriate.
Any person instructed to carry out installation, commis
sioning or operation of the transducer must have read
and understood the Operating Manual and in particular
the technical safety instructions.
In the interests of safety, the transducer should only be
operated by qualified personnel and as described in the
Operating Manual. It is also essential to comply with the
legal and safety requirements for the application con
cerned during use. The same applies to the use of
accessories.
The transducer is not intended for use as a safety com
ponent. Please also refer to the "Additional safety pre
cautions" section. Proper and safe operation requires
proper transportation, correct storage, siting and mount
ing, and careful operation.
Operating conditions
SPlease observe the allowed maximum values stated
in the specifications for:
- Limit load
- Limit load at max. eccentricity
- Limit lateral loading
- Breaking loads
- Temperature limits

Safety instructions
PW15iA A4359-1.0 HBM: public 5
- Limits of electrical loading capacity
SPlease note that when several transducers are
installed in a scale, there is not always an even distri
bution of load on the individual transducers.
SThe transducers can be used as machine elements.
When used in this manner, it must be noted that, to
favor greater sensitivity, the transducer is not
designed with the safety factors usual in mechanical
engineering.
SThe design or safety engineering of the transducer
must not be modified without our express permission.
SThe transducer is maintenance-free.
SIn accordance with national and local environmental
protection and material recovery and recycling regula
tions, old transducers that can no longer be used
must be disposed of separately and not with normal
household garbage, see Section 9, Page 32.
Qualified personnel
Qualified persons means persons entrusted with the
installation, fitting, commissioning and operation of the
product who possess the appropriate qualifications for
their function.
This includes people who meet at least one of the three
following requirements:
SKnowledge of the safety concepts of measurement
and automation technology is a requirement and as
project personnel, they must be familiar with these
concepts.
SAs measurement or automation plant operating per
sonnel, they have been instructed how to handle the
machinery. They are familiar with the operation of the

Safety instructions
6A4359-1.0 HBM: public PW15iA
equipment and technologies described in this docu
mentation.
SAs commissioning engineers or service engineers,
they have successfully completed the training to qual
ify them to repair the automation systems. They are
also authorized to activate, ground and label circuits
and equipment in accordance with safety engineering
standards.
Working safely
SThe transducer must not be directly connected to the
power supply system. The supply voltage must be
between 12 and 30VDC.
SError messages should only be acknowledged once
the cause of the error is removed and no further dan
ger exists.
SMaintenance and repair work on an open device with
the power on may only be carried out by trained per
sonnel who are aware of the dangers involved.
SAutomation equipment and devices must be designed
in such a way that adequate protection or locking
against unintentional actuation is provided (e.g.
access checks, password protection, etc.).
SFor those devices operating in networks, safety pre
cautions must be taken both in terms of hardware and
software, so that a line break or other interruptions to
signal transmission do not cause undefined states or
loss of data in the automation device.
SAfter making settings and carrying out activities that
are password-protected, ensure that any controls that
may be connected remain in a safe condition until the
switching performance of the device has been tested.

Safety instructions
PW15iA A4359-1.0 HBM: public 7
Additional safety precautions
Additional safety precautions to meet the requirements of
the relevant national and local accident prevention regu
lations must be taken in plants where malfunctions could
cause major damage, loss of data or even personal
injury.
The scope of supply and performance of the transducer
covers only a small area of measurement technology.
Before starting up the transducer in a system, a project
planning and risk analysis must first be implemented,
taking into account all the safety aspects of measure
ment and automation technology so that residual risks
are minimized. This particularly concerns personal and
machine protection. The transducers cannot implement
any safety-relevant cutoffs. In the event of a fault, the
relevant precautions must establish safe operating condi
tions.
General dangers of failing to follow the safety
instructions
The transducer corresponds to the state of the art and is
failsafe. The transducer may give rise to residual dangers
if it is inappropriately installed or operated.

Markings used
8A4359-1.0 HBM: public PW15iA
2 Markings used
2.1 Symbols on the transducer
CE mark
The CE mark enables the manufacturer to guarantee that
the product complies with the requirements of the rele
vant EC directives (the Declaration of Conformity can be
found on the HBM website (www.hbm.com) under
HBMdoc).
Statutory waste disposal mark
In accordance with national and local environmental pro
tection and material recovery and recycling regulations,
old devices that can no longer be used must be disposed
of separately and not with normal household garbage.
Also see Section9, Page 32.
2.2 The markings used in this document
Important instructions for your safety are specifically
identified. It is essential to follow these instructions in
order to prevent accidents and damage to property.
Symbol Significance
WARNING This marking warns of a potentially dangerous situa
tion in which failure to comply with safety require
ments can result in death or serious physical injury.
Notice This marking draws your attention to a situation in
which failure to comply with safety requirements can
lead to damage to property.

Markings used
PW15iA A4359-1.0 HBM: public 9
SignificanceSymbol
Important
This marking draws your attention to important infor
mation about the product or about handling the prod
uct.
Information
This marking draws your attention to information
about the product or about handling the product.
Emphasis
See …
Italics are used to emphasize and highlight text and
identify references to sections, diagrams, or external
documents and files.

Structure and mode of operation
10 A4359-1.0 HBM: public PW15iA
3 Structure and mode of operation
PW15iA digital load cells are part of the family of elec
tronics developed by HBM for static and dynamic weigh
ing processes. The measuring element is a steel loaded
member to which strain gages (SG) are applied. The SG
are arranged so that two are stretched and the other two
compressed when a load acts on the load cell. The
PW15iA digitally conditions the signals and delivers a
fully-filtered, scaled and digitized output signal for direct
connection to bus systems or PCs via the RS‐485 inter
face, CANopen, or DeviceNet. Measuring element and
electronics are housed in a single enclosure. The digital
load cells can be quickly and easily matched to a particu
lar system by various parameters, and they work with an
internal data rate of up to 1200 measurements per sec
ond.
The inbuilt digital inputs and outputs allow event-driven
weight determination, e.g. for checkweigher applications
or dosing controls. The digital outputs can be configured
by software command, and can be used to control coarse
flow and fine flow in dosing valves, for example.
The PanelX PC software is available to facilitate parame
ter settings, to display dynamic measurement signals and
for comprehensive frequency analysis of the dynamic
system.
This document describes the installation and functions of
the digital load cell. The commands for the interfaces can
be found in the online documentation for the PanelX pro
gram.

Structure and mode of operation
PW15iA A4359-1.0 HBM: public 11
3.1 Layout
Voltage
control
Interface
I/Os
Supply
voltage UB/GND
Interface
RS-485/CANopen
IO
Trigger,
Stop Dosing
EEPROM
Linearization
Serial number
Digital filter
Data rate
Sensitivity
Zero value
μP
A
D
PW15iA
Fig. 1.1 Block diagram
The analog measuring element signal is amplified, fil
tered, and digitized in the A/D converter. This measure
ment signal is conditioned (filtering, analysis) in the
microprocessor, and transmitted via the interface.
Depending on the configuration, the inputs and outputs
can both control the processing and trigger valves, for
example, subject to the signal. All the parameters can be
stored power failsafe.
The digital load cells have switchable inputs or outputs:
They can use a maximum of 2 inputs or 2 outputs, or one
input and one output.
Detailed information on setting the different functions can
be found in the online help of the PanelX program.

Structure and mode of operation
12 A4359-1.0 HBM: public PW15iA
3.2 Signal conditioning
FMD
ASF ICR
SZA
SFA
NOV, RSN
LDW, LWT LIC
PVA
IMD
LIV
TAV, TAS Net
measured
value
Gross
measured
value
Extreme
values
Trigger/
Stop
Limit
values
Data
rate
Working
standard
calibr.
Filter Tare
A
D
User-defined
scaling
Lineari-
zation
Min/
Max
Trigger
Limit
values
RUN
BRK
Coarse Flow
Fine Flow
Ready
Alarm
Dosing control
Fig. 1.2 Signal conditioning
Digitization is followed by filtering, using digital filters
adjusted by the software. The ICR command changes
the output rate (measured values per second).
In the working standard calibration of the electronics (on
delivery), 0 mV/V corresponds to zero and the maximum
capacity is either 1,000,000digits (NOV≠0), or
5,120,000digits (NOV=0). The two parameters LDW and
LWT give you the opportunity to adapt the characteristic
curve to meet your requirements (scale curve) and you
can use the NOV command to standardize the measured
values to the required scaling value (e.g. 3000d).
Detailed information can be found in the command docu
mentation and in the online help for the PanelX program.
You also have the opportunity to
Sswitch from gross to net signals,

Structure and mode of operation
PW15iA A4359-1.0 HBM: public 13
Sactivate an automatic zero on start up function,
Sactivate an automatic zero tracking function,
Slinearize the scale curve with a third order polynomial,
Sactivate various digital filters. Available filters include
those with cut-off frequencies below 1Hz, fast-settling
filters for dynamic measurements, notch filters and
mean value filters.
Use MSV? to read out the current measured value. The
format of the measured value (ASCII or binary) is set
with the COF command. You can also use the COF com
mand to activate automatic measurement output. The
measured values are transmitted in the following format,
subject to the COF command:
Output format Input signal Output when NOV=0 Output when
NOV>0
Binary, 2 chars. (INT) 0 …maximum
capacity
0 …20,000digits 1 …NOV
Binary, 4 chars. (LONG) 0 …maximum
capacity
0 …5,120,000digits 1 …NOV
ASCII 0 …maximum
capacity
0 …1,000,000digits 1 …NOV
3.3 Adaptive interference suppression
Whatever the mode of operation, you can use the ADF
command to activate automatic interference suppression
with adaptive filters. Interference frequencies are auto
matically found during measurement and suppressed by
comb filters and averaging. The maximum filter settling
time can be limited with the TMA command.

Structure and mode of operation
14 A4359-1.0 HBM: public PW15iA
3.4 Inputs and outputs
The two I/Os can be used either as inputs or outputs.
You can also set different switching levels (TTL or PLC)
for the inputs. On delivery, both I/Os are set as inputs
with a TTL level. Specify the function of the I/Os as
inputs with commands IM1 and IM2, and the function as
outputs with OM1 and OM2.
Notice
The electronics must be operated with a supply voltage
of between 12 and 30V. Incorrect connections between
the supply and interface cables or the digital inputs/out
puts can cause irreversible damage.
So you must check the correct assignment of the con
nections before switching on for the first time.
3.4.1 Trigger function
In Trigger mode (command IMD1), the electronics have
four different trigger functions available:
SPre-triggering by level
SPre-triggering by external (digital) signal
SPost-triggering by level
SPost-triggering by external (digital) signal
Gross or net values can be used as input values. The
filter settling time can be optimized by the actual elec
tronics (command AST).

Structure and mode of operation
PW15iA A4359-1.0 HBM: public 15
3.4.2 Filling and dosing
The electronics include full dosing control (command
IMD2). As many as 32 parameter sets can be stored in
the EEPROM for different applications. But you can still
change the dosing parameters yourself during dosing.
Digital outputs can be used to control coarse and fine
flow, for example. The PanelX software includes detailed
instructions for setting the different parameters.
3.4.3 Limit value function
In Standard and Trigger modes (command IMD), the
electronics allow as many as four limit values to be moni
tored (command LIV). Gross or net values, the trigger
result, or the extreme values (Min/Max) are available to
you as input signals. Use the measurement status to
read out the status, either simultaneously with the mea
sured values (command MSV?) or separately (command
RIO?).
3.4.4 Extreme value functions
The electronics include a peak value function (Minimum
and Maximum, command PVS), that monitors either the
gross or net values, as required. Use command PVA to
read out the values and use command CPV to reset the
peak values.

Structure and mode of operation
16 A4359-1.0 HBM: public PW15iA
4 Conditions on site
Series PW15iA transducers are hermetically encapsu
lated and are therefore very insensitive to the influence of
moisture and humidity. The transducers achieve protec
tion classes IP68 (test conditions: 100 hours under 1m
water column) and IP69K (water at high pressure, steam
cleaning), as per DIN EN605291). Nevertheless, the
transducers must be protected against the lasting effects
of moisture and humidity.
Important
Note that when using a steam cleaner, the conditions
stated in EN 60529 under degree of protection IP69K
such as max. pressure, max. temperature, etc., must be
met.
4.1 Protection against corrosion
The transducer must be protected against chemicals that
could attack the steel of the housing and base plate, or
the cable.
1) When connector plug of the same protection class is fitted.

Structure and mode of operation
PW15iA A4359-1.0 HBM: public 17
Notice
Acids and all substances that release ions also attack
stainless steels and their seam welds.
The resultant corrosion can cause the transducer to fail.
If this is the case, you must provide appropriate means of
protection.
4.2 Deposits
Dust, dirt and other foreign matter must not be allowed to
accumulate sufficiently to divert some of the measuring
force onto the housing, thus distorting the measured
value (force shunt).
Do not use hard or pointed objects when cleaning the
gap between load application and housing, or between
mounting plate and housing.

Structure and mode of operation
18 A4359-1.0 HBM: public PW15iA
5 Mechanical installation
5.1 Important precautions during
installation
SHandle the transducer with care.
SWelding currents must not be allowed to flow over the
transducer. If there is a risk that this might happen,
you must provide a suitable low-ohm connection to
electrically bypass the transducer. HBM provides the
highly flexible EEK ground cable for this purpose, for
example. It can be screwed on above and below the
transducer.
SMake sure that the transducer cannot be overloaded.
WARNING
There is a danger of the transducer breaking if it is over
loaded. This can cause danger for the operating person
nel of the system in which the transducer is installed.
Implement appropriate safety measures to avoid over
loads or to protect against the resulting dangers.
Notice
The length of the fastening screws must not exceed the
maximum thread reach of 10mm, as otherwise the trans
ducer could be damaged.