HBM VKIA405 User manual

A2448-1.1 en/de/fr
Digital Amplifier
Digitaler
Messverstärker
Amplificateur
numérique
VKIA405
Mounting instructions
Montageanleitung
Notice de montage

English Page 3 − 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deutsch Seite 19 − 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Français Page 35 − 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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VKIA405
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Contents Page
Safety information 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 General 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Special features 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Mounting the amplifier 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Preparing the cables 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Connection 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Adjustment without weights 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Off-center load compensation 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Special instructions 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Specifications 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4VKIA405
HBM A2448-1.1 en/de/fr
Safety information
Appropriate use
In the interests of safety, the digital amplifier 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.
Each time, before starting up the equipment, you must first run a project
planning and risk analysis that takes into account all the safety aspects of
weighing technology. This particularly concerns personal and machine
protection.
Additional safety precautions must be taken in plants where malfunctions
could cause major damage, loss of data or even personal injury. In the event
of a fault, these precautions establish safe operating conditions.
This can be done, for example, by mechanical interlocking, error signaling,
limit value switches, etc.
The digital amplifier is not a safety element within the meaning of appropriate
use. For safe and trouble-free operation, this amplifier must not only be
correctly transported, stored, sited and mounted but must also be carefully
operated and maintained.
General dangers of failing to follow the safety instructions
The amplifier corresponds to the state of the art and is failsafe. Terminal
boxes can give rise to remaining dangers if they are inappropriately installed
and operated by untrained personnel.
Everyone involved with siting, starting-up, maintaining or repairing an amplifier
must have read and understood the Mounting Instructions and in particular
the technical safety instructions.
Remaining dangers
The scope of supply and performance of the amplifier covers only a small area
of connection technology. In addition, equipment planners, installers and
operators should plan, implement and respond to the safety engineering
considerations of connection technology in such a way as to minimize
remaining dangers. Prevailing regulations must be complied with at all times.
There must be reference to the remaining dangers associated with the
connection technology. Remaining dangers are indicated in these Mounting
Instructions by the following symbols:

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HBMA2448-1.1 en/de/fr
Symbol: CAUTION
Meaning: Possibly dangerous situation
Warns of a potentially dangerous situation in which failure to comply with
safety requirements could lead to damage to property and slight or moderate
physical injury.
Symbol: NOTE
Means that important information about the product or its handling is being
given.
Qualified personnel
Qualified personnel means persons entrusted with siting, mounting, starting up
and operating the product, who possess the appropriate qualifications for their
function.
This includes people who meet at least one of the three following
requirements:
•Knowledge of the safety concepts of weighing technology is a requirement
and as project personnel, you must be familiar with these concepts.
•As automation plant operating personnel, you have been instructed how to
handle the machinery and are familiar with the operation of the equipment
and technologies described in this documentation.
•As commissioning engineers or service engineers, you have successfully
completed the training to qualify you to repair the automation systems. You
are also authorized to activate, ground and label circuits and equipment in
accordance with safety engineering standards.
The amplifier must only be installed by qualified personnel, strictly in
accordance with the specifications and with the safety requirements and
regulations listed below. It is also essential to observe the appropriate legal and
safety regulations for the application concerned. The same applies to the use of
accessories.

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HBM A2448-1.1 en/de/fr
Conditions at the place of installation
Do not allow the amplifier to become dirty or damp.
Maintenance
The amplifier housing has degree of protection IP65 (dust-tight, protected
against water jets). Make regular checks to ensure the tightness and
efficiency of the rubber lid seal and the screw fittings.
Accident prevention
The prevailing accident prevention regulations must be observed.
Unauthorized conversions and modifications are prohibited
The device must not be modified from the design or safety engineering point
of view without HBM’s express agreement. Any modification shall exclude all
liability by HBM for any damage resulting therefrom.
It is strictly forbidden to carry out any repairs and soldering work on the
motherboards or to replace any components. Repairs must only be
undertaken by persons who are authorized by HBM to do so.
•During installation and when connecting the cables, take action to prevent
electrostatic discharge as this may damage the connected electronics.
•When connecting additional devices, comply with the safety requirements
for electrical measurement, control, regulatory and laboratory equipment
(EN 61010).
•All the interconnecting cables must be shielded cables. The shield must be
connected extensively to ground on both sides.
The supply connection, as well as the signal and sense leads, must be
installed in such a way that electromagnetic interference does not adversely
affect device functionality (HBM recommendation: ”Greenline shielding
design”, downloadable from the Internet at http://www.hbm.com/Greenline).
Automation equipment and devices must be covered over in such a way that
adequate protection or locking against unintentional actuation is provided (e.g.
access checks, password protection, etc.).
When devices are working in a network, these networks must be designed in
such a way that malfunctions in individual nodes can be detected and shut
down.
Safety precautions must be taken both in terms of hardware and software, so
that a line break or other interruptions to signal transmission, e.g. via the bus
interfaces, do not cause undefined states or loss of data in the automation
device.

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1 General
The digital amplifier VKIA405 is designed for parallel connection of up to 4 load
cells. The analog transducer signal from the load cells are first amplified and
filtered by the integrated electronics and then converted to a digital value in the
analog/digital converter. The digitized measurement signal is conditioned in the
microprocessor. The conditioned signal is forwarded to a computer via the serial
RS 485 2-wire interface. All the parameters can be stored power fail safe in the
EEPROM.
The amplifier is delivered ex factory with a basic calibration. The commands
LDW / LWT and NOV are used to adapt the application. In normal cases,
adjustment is implemented with the aid of weights on the complete scale
structure. Alternatively, adjustment with calculated values is possible when the
application parameters are known (e.g. when setting up several identical
scales). This procedure is described in Section 6. The switching output
(terminal ”OUT”, see Fig. 5.2) can be used as a limit value switch. The
command LIV is used to make the settings. All commands can be found on
the system CD, Order No. 1-AD104/5-DOC.
The required power supply for the device is an extra-low voltage (12...30 V) with
safe disconnection from the mains.
•When connecting additional devices, comply with the safety requirements.
•Do not exceed maximum voltage levels when connecting external controls
to the process output of the VKIA.
•The ground connections of the power supply, the process output and the
interface are interconnected in the device. If the potentials of the devices to
be connected are different, suitable steps must be taken to isolate the
signals (e.g. using an optocoupler).
•Shielded cables must be used for all connections apart from the supply
voltage (see note below). The shield must be connected extensively to
ground on both sides.
•The use of unshielded cables for the voltage supply is only permissible for
cables with a maximum length of 30 m, laid inside buildings. If cables are
longer or are installed outside buildings, shielded cables must be used (as
per EN 61326-1).
•Connection to a wide-ranging supply network is not permitted as this often
causes interfering voltage peaks to be coupled into the electronics. Instead,
a local supply must be provided for the VKIA 405 (even when grouped).
The terminal boxes also allow the shield to be connected conventionally by
means of the shield strands. With this method, EMC-proofing as per EN 45 501
is restricted, which can lead to measurement errors when there are
electromagnetic interference fields.

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HBM A2448-1.1 en/de/fr
2 Special features
Mechanical
− Parallel connection of max. four load cells in 4 or 6-wire circuit
− HBM’s shielding design provides EMC-proofing as per EN 45 501
− Off-center load compensation via the integrated resistor network in the load
cell output
− Degree of protection IP65 per EN 60 529
Integrated electronics
− Serial interface (UART) RS-485 2-wire
− Digital filtering and scaling of the measurement signal
− Communication with ASCII commands
− Limit value with hysteresis
− Power fail safe parameter storage
− Predestined for monitoring tasks
Panel program for parameter settings and measurement (see system CD
1-AD104/5-DOC)

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3 Mounting the amplifier
250
260
Mounting direction
264.1
278
0
25 50 75
175
200
100
128
110
37.5 *
4x M12, SW 14 for
cable diameter
4 ... 6.5 mm
2x M16, SW 17 for
cable diameter
5 ... 9 mm
*With rubber seal
(mounted condition)
∅7
Fig. 3.1: Mounting dimensions
The best way to fit the VKIA405 is with the grommets pointing downward. This makes
it more difficult for moisture to get in.
Top view of housing
Tighten the mounting screws in the following sequence:
1. 4.
2.
3.
Max. tightening torque for lid
screws: 0.7 N@m
Fig. 3.2: Tightening the mounting screws, sequence
CAUTION
Please tighten the lid screws with a torque of 0.7 N@m, to ensure that the
specified IP degree of protection and the highest possible EMC protection is
provided.

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HBM A2448-1.1 en/de/fr
4 Preparing the cables
For optimum results, proceed as follows:
•Remove the outer sheath of the cable and depending on the cable diameter,
expose the braided screen for about 10 ...15 mm.
•Push the cap nut and the bladed insert with the sealing ring onto the cable.
•Bend the braided screen outward at right angles (90°).
•Crimp the braided screen over towards the outer sheath of the cable, i.e. fold
it a further 180°.
•Slip the intermediate connection piece on as far as the braided screen, quickly
turning it to and fro around the cable axis.
•Push the bladed insert with the sealing ring into the intermediate connection
piece and engage the locking element.
•Firmly tighten the cap nut.
Shielded cable
Cap nut
Sealing ring
Bladed insert
Braided screen
Intermediate connection piece
Fig. 4.1: Screwed clamping gland assembly

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5 Connection
The terminals are identified as shown in the following diagram. The colors
correspond to the wire colors used for HBM load cells.
VKIA405- Load cells
Terminals connection
Excit. A = (blue) Excitation (+)
Sense A = (green) Sense (+)
In A = (white) Signal (+)
In B = (red) Signal (−)
Sense B = (gray) Sense (−)
Excit. B = (black) Excitation (−)
Screen = Screen (Shield),
connected with housing
Fig. 5.1: Terminal designation and cable assignment of load cells in 6-wire
configuration
+
−
12...
30 VDC
UB
GND
OUT
Load
(max. 500 mA)
Fig. 5.2: Connection of switching output to amplifier
Interface converter
SC232/422B
Control
computer Amplifier electronics Amplifier electronics
T/RB
T/RA
GND
T/RB T/RBT/RA T/RAGND GND
RS 485 2-wire Bus
VKIA405 VKIA405
Fig. 5.3: Connection of RS485 2-wire interface for bus mode

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HBM A2448-1.1 en/de/fr
CAUTION
All unused grommets must be closed off with the blind plugs provided for
the purpose. Tighten the associated swivel nut in each case to stop the
moisture getting in.
A termination resistor that can be actuated in the VKIA405 with a slide switch
is required for problem-free RS 485 communication. If a single VKIA405 is
connected to the control computer, the switch must be set to ”On”. When
several devices are in the bus, only one switch must be actuated, the others
must be set to ”Off”. Preferentially, the termination should be activated in the
device that is furthest away in the bus configuration from the control computer.
The control computer interface should also include a bus termination (this is
already integrated in the HBM interface converter 1-SC232/422B).
6 Adjustment without weights
The user characteristic curve can also be calculated if the accuracy
requirements are not high. Application of calibration weights is then not
required. Input is implemented with the commands LDW/LWT, see command
description AD105C. The requirement for this procedure is that transducers of
one type are used and that the following data is known for them:
N = number of transducers
Cn= sensitivity [mv/V]
RLC = input resistance of transducer [Ω]
The input resistance RLC can be found in the transducer data sheet or must
be measured. The value refers to a single transducer and can deviate from
the value of the output resistance. When measuring with an ohmmeter (supply
line blue /black), the transducer must not be connected to the amplifier or
other transducers. If the transducers have different values, a mean value must
be used. In this case, however, it must be expected that the adjustment is less
accurate.
To set the electric sensitivity of the amplifier, the ”Span” value must first be
calculated:
1) Rx= N @200 + RLC (Rx is an auxiliary variable without technical significance)
2) Span = CN
2 mV/V RLC RX
1000000
SS
The initial load (level control with unloaded configuration) is taken into account
by the LDW value. This can be taken over by an identical scale or measured
as follows:

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HBMA2448-1.1 en/de/fr
3) Input LDW0; LWT1000000; NOV1000000; COF3;
The password must be set for this, see command description AD105C.
4) Query MSV?;
and note the value delivered as the answer
5) Input: LDW(noted value); LWT(noted value + Span);
The password must be set for this, see command description AD105C.
Example:
Four transducers with RLC = 350 Ω, Cn= 1.9mV/V, value for initial load =
123000.
1) Rx= 4 @200 + 350 = 1150
2) Span = 1000000
S
1.9 mV/V
2 mV/V 350 1150
S= 289130
3) and 4) as described above (result in example, initial load = 123000)
5) Input: LDW 123000; LWT 412130;
Result:
The measured value 0 is output for the unloaded scale. The value 1000000
(or NOV) then corresponds to a load with the sum of initial load and maximum
capacity of all transducers.
Simplified procedure:
If the scale has to be tared before each measurement in operation, the initial
load can be disregarded. LDW is then left at the value 0, the ”Span” is used
as calculated above for LWT.
Result: The value 1000000 (or NOV) is output when the total weight (including
initial load) is equivalent to the sum of the transducer maximum capacities.

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7 Off-center load compensation
With weighing machines, mechanical imbalance may lead to off-center load
errors. According to the EN 45501 3.6.2 standard for non-automatic weighing
machines, specific values are to be maintained for eccentric loading. The
digital amplifiers provide an easy way to compensate for these errors
electrically. A binary-stepped network of 4 resistors is available for each load
cell, that is shorted at the factory via 0 ohm resistors (see Fig. 6.1). Opening
the vertical 0 ohm resistors activates the relevant resistances and thus
reduces the load cell signal.
Sense (+)
Sense (−)
Excitation (+)
Excitation (−)
Signal (−)
Signal (+)
0.39 Ω
0.82 Ω
1.50 Ω
3.00 Ω
0.39 Ω
0.82 Ω
1.50 Ω
3.00 Ω
0.39 Ω
0.82 Ω
1.50 Ω
3.00 Ω
0.39 Ω
0.82 Ω
1.50 Ω
3.00 Ω
4321
Output: Amplifier
Input: Load cells 1 4
Fig. 6.1: Resistor network for off-center load compensation of 4 load cells
Practical example using a platform with 4 load cells:
•When the four corners of the platform are loaded, note the scale signals in
order to assess the respective differences (in kg) to the corner of the scale
(load cell) with the lowest indication. This load cell is the reference load cell (4)
and does not need adjustment (in the example in Fig. 7.1, load cell 4).
•The chart (Fig. 7.2) is graduated in 7 test load ranges. Select the test loads
used (12.5 kg in the example) in the relevant line. Starting from the calculated
off-center load error difference on the X-axis, look for the intersection with the
test load and then, on the Y-axis, read off the resistance and the most suitable
combination. The resistance values here apply for 350 ohmload cells (see the
table in the lid of the VKIA405).
In our example, load cell 3 has an off-center load error of 80 kg, which
produces an adjustment resistance of 1.5 + 0.82 ohms (shown in Fig. 7.1).

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HBMA2448-1.1 en/de/fr
Load cell 1
12 600 kg Load cell 2 12 550 kg
Load cell 3
12 530 kg Reference load cell 4 12 450 kg
Test load
12.5 t
(Example: Reference load cell +80 kg)
Fig. 7.1: Example: Platform weighing machine with 4 load cells with 12.5 t
test load
•For the load cell affected (e.g. load cell 3), the necessary resistances are
activated by opening the relevant ”0-W-resistor”. Tip: Divide the wire and
bend it to one side
•Repeat this procedure for all the load cells apart from the ’reference load
cell’ (in our example, this is load cell 4).
Off-center load error in kg
Test load
Adjustment resistance R in ohms
50 kg
0.5t
5t
100 kg
1 t
10 t
125 kg
1,25 t
12,5 t
150 kg
1,5 t
15 t
200 kg
2 t
20 t
250 kg
2,5 t
25 t
300 kg
3 t
30 t
0.39+0.82+1.5+3Ω
0.39+1.5+3Ω
1.5+3Ω
0.39+0.82+3Ω
0.82+3Ω
0.39+3Ω
3Ω
0.39+0.82+1.5Ω
0.82+1.5Ω
0.39+1.5Ω
1.5Ω
0.39+0.82Ω
0.82Ω
0.39Ω
−
0,2
2
20
1
10
100
2
20
200
3
30
300
4
40
400
5
50
500
Example:
Test load: 12,5 t
Off-center load error:
80 kg
80
Resistance
of your
choice
Fig. 7.2: Off-center load compensation for 350 Wload cells
(For 700 Ωload cells, the established value must be doubled.)

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HBM A2448-1.1 en/de/fr
Fig. 7.3: Alternative method for procedure as in Fig. 7.2
− the dividing points are shown − see table in lid
(For 700 ohm load cells, the established value must be doubled.)

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8 Special instructions
For other test loads types (e.g. building site vehicle testing), the user can
extend the chart by drawing an additional line between the zero point and the
actual test load used.
If the corner load errors are particularly high or if the load cells have an input
resistance of more than 350 W, it may be that the total value of the resistor
network is insufficient. In these cases, remove the ”6th 0-W-resistor” (R125,
R225,...,R825) and replace with a resistor of your choice. This resistor is
added to those of the network when resistors are included by opening them.
If the chart is not big enough, the adjustment resistance can be calculated as
follows:
R(EA)+R(AW)·L(E)
L(P)
R(EA) = adjustment resistance (Ω)
R(AW) = output resistance of the load cell (Ω)
L(E) = measured off-center load error (kg)
L(P) = test load (kg)
In this case, you must first check the installation for possible errors.
Note
The basis for calculation described in this section for off-center load
compensation and appearing in the form of a chart, a table or a formula,
apply to load cells with a symmetrical output voltage. In practice, the
compensation effect may differ from the target value, depending of the
type of load cell involved. In this case, you will have to use empirical
values for adjustment.

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HBM A2448-1.1 en/de/fr
9 Specifications
Type VKIA405
Accuracy class 0.1
Resistor network for off-center load com-
pensation Ω0.39...5.71 (in 15 steps)
Nominal (rated) voltage VDC 24
Voltage supply VDC 12...30
Nominal (rated) temperature range
°C
−10...+50 [+14...+122]
Operating temperature range °
C
[
°
F]
−20...+70 [−4...+158]
Storage temperature range
[°F]
−40...+85 [−40...185]
Atmospheric humidity rel. (non-condensing % 5...85
Weight, approx. kg 1
Degree of protection per EN 60529
(IEC 529) IP65 (dust-tight and protected against
water jets)
Material: Housing Sheet steel powder-coated housing:
RAL 7035
Sleeve nut 4 x M12, SW14; 2 x M16, a.f.17
nickel-plated brass
Clamping cone Neoprene
Integrated electronics
Bridge resistance per transducer (max. 4) Ω300...1000
Cable length of each transducer m 6
Bridge excitation voltage1) VAC 5
Max. measuring range mV/V ±3,0
Measurement signal resolution Bit 24 (with 1 Hz)
Sampling rate (depends on output format
and baud rate) Hz 200; 100; 50; 25; 12; 6; 3; 2; 1
Cut-off frequency of digital filter, adjustable;
at 3dB Hz 20...0,05
Cable length between electronics and com-
puter with RS 485. m < 500
Non-linearity, related to the sensitivity %±0,025
Temperature effect per 10K
on the zero point, rel. to the full scale value
on the meas. sensitivity, rel. to the actual value %
%±0,02 ±0,05
Serial interfaces
electrical level (RS-485, differential) VLow: B-A < 0.35 High: B-A > 0.35
Baud rate, adjustable Baud 1 200...115 200
Max. voltage at control output =
Supply voltage V 12...30
Max. current load, control output mA 500
Current consumption (at 350-W-load cell) mA < 60
1) Dependent on number of connected load cells

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Inhalt Seite
Sicherheitshinweise 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Allgemeines 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 CharakteristischeMerkmale 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Montage des Messverstärkers 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Konfektionierungder Kabel 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Anschließen 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Abgleich ohne Gewichte 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Eckenlastabgleich 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Spezielle Hinweise 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Technische Daten 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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HBM A2448-1.1 en/de/fr
Sicherheitshinweise
Bestimmungsgemäßer Gebrauch
Zur Gewährleistung eines sicheren Betriebes darf der digitale Messverstärker
nur nach den Angaben in der Montageanleitung verwendet werden. Bei der
Verwendung sind zusätzlich die für den jeweiligen Anwendungsfall erforderli-
chen Rechts- und Sicherheitsvorschriften zu beachten. Sinngemäß gilt dies
auch bei Verwendung von Zubehör.
Vor jeder Inbetriebnahme der Geräte ist eine Projektierung und Risikoanalyse
vorzunehmen die alle Sicherheitsaspekte der Wägetechnik berücksichtigt.
Insbesonders betrifft dies den Personen- und Anlagenschutz.
Bei Anlagen, die aufgrund einer Fehlfunktion größere Schäden, Datenverlust
oder sogar Personenschäden verursachen können, müssen zusätzliche Si-
cherheitsvorkehrungen getroffen werden. Im Fehlerfall stellen diese Vorkeh-
rungen einen sicheren Betriebszustand her.
Dies kann z.B. durch mechanische Verriegelungen, Fehlersignalisierung,
Grenzwertschalter usw. erfolgen.
Der digitale Messverstärker ist kein Sicherheitselement im Sinne des bestim-
mungsgemäßen Gebrauchs. Der einwandfreie und sichere Betrieb dieses
Messverstärkers setzt sachgemäßen Transport, fachgerechte Lagerung, Auf-
stellung und Montage sowie sorgfältige Bedienung und Instandhaltung voraus.
Allgemeine Gefahren bei Nichtbeachten der Sicherheitshinweise
Der Messverstärker entspricht dem Stand der Technik und ist betriebssicher.
Von den Klemmenkästen können Restgefahren ausgehen, wenn sie von un-
geschultem Personal unsachgemäß eingesetzt und bedient werden.
Jede Person, die mit Aufstellung, Inbetriebnahme, Wartung oder Reparatur
eines Messverstärkers beauftragt ist, muss die Montageanleitung und
insbesondere die sicherheitstechnischen Hinweise gelesen und verstanden
haben.
Restgefahren
Der Leistungs- und Lieferumfang des Messverstärkers deckt nur einen Teilbe-
reich der Anschlusstechnik ab. Sicherheitstechnische Belange der Anschluss-
technik sind zusätzlich vom Anlagenplaner / Ausrüster / Betreiber so zu planen,
zu realisieren und zu verantworten, dass Restgefahren minimiert werden. Je-
weils existierende Vorschriften sind zu beachten. Auf Restgefahren im Zusam-
menhang mit der Anschlusstechnik ist hinzuweisen. In dieser Montageanleitung
wird auf Restgefahren mit folgenden Symbolen hingewiesen: