MAHA CONNECT Series User manual

CONNECT SERIES
Roller Brake Tester for Passenger Cars and Vans
Original Operating Instructions
BA023001-en
C_MBT C 3.5 W220
C_MBT S 3.5 W220
C_MBT C 3.5 W250
C_MBT S 3.5 W250
C_MBT C 4.0 W220
C_MBT S 4.0 W220
C_MBT C 4.0 W250
C_MBT S 4.0 W250
C_MBT C 5.0 W280
C_MBT S 5.0 W280

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BA023001-en
2021-03-15
© MAHA Maschinenbau Haldenwang GmbH & Co. KG
The reproduction, distribution and utilization of this document as well as the communication of its con-
tents to others without explicit authorization is prohibited. Offenders will be held liable for the payment of
damages. All rights reserved in the event of the grant of a patent, utility model or design.
The contents of this edition have been checked with great care. However, errors cannot be fully excluded.
Subject to technical change without notice.
Manufacturer
MAHA Maschinenbau Haldenwang GmbH & Co. KG
Hoyen 20
87490 Haldenwang
Germany
Phone: [phone]
Fax: [phone]
Mail: [email protected]
Web: www.maha.de
Service
MAHA SERVICE CENTER
Maybachstraße 8
87437 Kempten
Germany
Phone: [phone]
Fax: [phone]
Mail: [e-mail]
Web: www.mahaservicecenter.de

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Contents
1General safety instructions .............................................................................................7
1.1 Introduction ........................................................................................................................ 7
1.2 Symbols and signal words ................................................................................................... 7
1.2.1 Personal injury .................................................................................................................... 7
1.2.2 Damages to products, machinery and equipment .............................................................. 7
1.2.3 Information......................................................................................................................... 8
1.3 Procedure in the event of a malfunction............................................................................. 8
1.4 Procedure in the event of an accident ................................................................................ 8
1.5 Requirements for operators and service personnel............................................................ 8
2Description .....................................................................................................................9
2.1 Service life........................................................................................................................... 9
2.2 General machine description .............................................................................................. 9
2.2.1 Structure and legend........................................................................................................... 9
2.2.2 Description of the test bench............................................................................................ 10
2.2.3 Intended use ..................................................................................................................... 11
2.2.4 Brake test of vehicles with one driven axle ....................................................................... 11
2.2.5 Brake test of four-wheel drive vehicles............................................................................. 12
2.2.6 Overview with components .............................................................................................. 14
2.3 Technical data ................................................................................................................... 15
2.3.1 Safety area ........................................................................................................................ 18
2.3.2 Set-up diagram.................................................................................................................. 19
2.4 Control unit description .................................................................................................... 21
2.4.1 Wiring diagram.................................................................................................................. 22
2.4.2 Control cabinet structure Basic variant............................................................................. 23
2.4.3 Control cabinet structure Full equipment......................................................................... 24
2.4.4 Connection and termination of the central module (ZM) ................................................. 26
2.4.5 Coding ZM-OM.................................................................................................................. 27
2.4.6 Coding ZM-IFM.................................................................................................................. 29
2.4.7 Control buttons................................................................................................................. 34
2.4.8 Indicator light on the control cabinet in the event of a fault ............................................ 34
3Transport, handling and storage ...................................................................................35
3.1 Safety instructions............................................................................................................. 35
3.2 Scope of delivery............................................................................................................... 36
3.3 Packaging information ...................................................................................................... 37
3.3.1 Centre of gravity of the packed roller set.......................................................................... 37

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3.4 Transport and handling..................................................................................................... 37
3.5 Storage.............................................................................................................................. 37
4Installation....................................................................................................................38
4.1 Safety instructions............................................................................................................. 38
4.2 Installation diagrams......................................................................................................... 39
4.3 Mounting the control cabinet ........................................................................................... 40
4.3.1 Mechanical installation ..................................................................................................... 40
4.3.2 Electrical installation......................................................................................................... 41
4.4 Mounting the roller set..................................................................................................... 43
4.4.1 Mechanical installation ..................................................................................................... 43
4.4.2 Electrical installation......................................................................................................... 47
4.5 Functional test .................................................................................................................. 54
5Calibration / Adjustment ..............................................................................................55
5.1 Adjusting the brake force.................................................................................................. 55
5.1.1 Adjusting the zero point.................................................................................................... 55
5.1.2 Adjusting brake forces with adjusting device.................................................................... 55
5.1.3 Adjusting brake forces with MJV II.................................................................................... 56
6Operation .....................................................................................................................57
6.1 Safety instructions............................................................................................................. 57
6.2 Safety devices ................................................................................................................... 58
6.3 Preparations...................................................................................................................... 60
6.3.1 Switching on the test bench.............................................................................................. 60
6.3.2 Variant 1: Establish LAN connection to PC/notebook ....................................................... 60
6.3.3 Establish a browser connection......................................................................................... 60
6.3.4 Variant 2: Establishing a WiFi connection ......................................................................... 61
6.3.5 Variant 3: Integration of the test bench into own network............................................... 62
6.4 Test procedure.................................................................................................................. 62
6.4.1 Drive on test bench........................................................................................................... 62
6.4.2 Carry out brake test with automatic sequence ................................................................. 63
6.4.3 Carry out brake test with semi-automatic sequence ........................................................ 64
6.4.4 Carry out four-wheel brake test with SmartDevice/PC in automatic mode ...................... 65
6.4.5 Carry out manual four-wheel brake test with SmartDevice/PC in counter-rotation mode66
6.4.6 Carry out four-wheel brake test in counter-rotation by means of pushbutton switch on
control cabinet................................................................................................................................ 68
6.4.7 Carry out manual single wheel brake test with SmartDevice/PC ...................................... 69
6.4.8 Carry out single wheel brake test by means of pushbutton switch on control cabinet..... 70
6.4.9 Exit the test bench ............................................................................................................ 72

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6.5 Results display................................................................................................................... 73
6.6 Measured value display .................................................................................................... 74
6.7 Settings ............................................................................................................................. 76
6.7.1 Support ............................................................................................................................. 77
6.7.2 Language........................................................................................................................... 77
6.7.3 Network ............................................................................................................................ 78
6.7.4 Event logging..................................................................................................................... 78
6.7.5 Test report ........................................................................................................................ 79
6.7.6 Machine data .................................................................................................................... 80
6.7.7 Calibrating brake force...................................................................................................... 80
6.7.8 Diagnostics Brake tester.................................................................................................... 81
6.7.9 External devices ................................................................................................................ 82
6.7.10 Service technician menu login........................................................................................... 82
6.8 Service technician menu ................................................................................................... 83
6.8.1 Account management....................................................................................................... 84
6.8.2 Network ............................................................................................................................ 84
6.8.3 Adjusting the brake force.................................................................................................. 87
6.8.4 Test bench settings ........................................................................................................... 87
6.8.5 Options overview.............................................................................................................. 88
6.8.6 Software update ............................................................................................................... 88
6.8.7 Input/output test .............................................................................................................. 89
6.9 Deceleration table............................................................................................................. 90
7Inspection and maintenance.........................................................................................91
7.1 Safety instructions............................................................................................................. 91
7.2 Care instructions ............................................................................................................... 92
7.3 Inspection and maintenance schedule.............................................................................. 92
7.4 Maintenance of the chains................................................................................................ 92
7.4.1 Cleaning the chains ........................................................................................................... 93
7.4.2 Checking for chain wear.................................................................................................... 93
7.4.3 Retensioning the chains / Replacing the test rollers ......................................................... 94
7.4.4 Lubricating the chains ....................................................................................................... 96
7.4.5 Lubricating the sensing roller hinges................................................................................. 97
8Trouble shooting and error resolution ..........................................................................98
8.1 Safety instructions............................................................................................................. 98
8.2 Error codes........................................................................................................................ 99
9Repair .........................................................................................................................105

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9.1 Safety instructions........................................................................................................... 105
9.2 Configuring the control unit............................................................................................ 105
9.3 Check sensor function..................................................................................................... 107
9.4 Adjusting the switching distance of the sensors ............................................................. 107
9.5 Releasing motors with mechanical brake........................................................................ 108
9.6 Enabling the test rollers via the Service technician button ............................................. 111
10 Decommissioning, dismantling and disposal...............................................................112
11 Accessories .................................................................................................................112
11.1 Roller cover W220, W250, W280 .................................................................................... 112
11.2 Crossing and lowering threshold..................................................................................... 112
11.3 C_MSA (MAHA universal analogue display) .................................................................... 113
11.3.1 Description...................................................................................................................... 113
11.3.2 Scope of delivery............................................................................................................. 114
11.3.3 Technical data ................................................................................................................. 114
11.3.4 Installation ...................................................................................................................... 114
11.3.5 Status LEDs...................................................................................................................... 117
11.3.6 Setup............................................................................................................................... 118
11.3.7 Function test ................................................................................................................... 122
11.3.8 Update ............................................................................................................................ 123
11.3.9 Other............................................................................................................................... 123
11.4 C_BOX ............................................................................................................................. 124
11.4.1 Description...................................................................................................................... 124
11.4.2 Scope of delivery............................................................................................................. 125
11.4.3 Display requirements ...................................................................................................... 125
11.4.4 Installation ...................................................................................................................... 125
11.4.5 Connecting the C_BOX with the brake tester.................................................................. 126
11.4.6 Coupling with the brake tester........................................................................................ 127
11.4.7 Error handling ................................................................................................................. 128
11.4.8 Software update ............................................................................................................. 128
11.5 Radio remote control RECO S.......................................................................................... 132
11.5.1 Description...................................................................................................................... 132
11.5.2 Coupling with the receiver (pairing)................................................................................ 132
11.5.3 Operation........................................................................................................................ 133
12 Content of the declaration of conformity....................................................................137
13 Annex .........................................................................................................................138
13.1 Naming convention......................................................................................................... 138

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1General safety instructions
1.1 Introduction
•These operating instructions must be read carefully and understood before work
commences.
•Please observe the specific safety information provided for the respective sections
of the operating manual.
•Adhering to the procedures, sequences and corresponding safety instructions is
essential.
•A printed copy of the operating instructions shall be kept permanently available at
the test bench.
•The relevant regulations regarding accident prevention and health and safety must
be observed.
1.2 Symbols and signal words
1.2.1 Personal injury
DANGER
indicates an imminent danger. Death or severe injuries will follow if this danger is not
avoided.
WARNING
indicates a potentially imminent danger. Death or severe injuries may follow if this
danger is not avoided.
CAUTION
indicates a potentially imminent danger. Slight or minor injuries may follow if this dan-
ger is not avoided.
1.2.2 Damages to products, machinery and equipment
NOTICE
indicates a potentially harmful situation. The product or something in its vicinity may
suffer damage if this is not avoided.

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1.2.3 Information
indicates important information.
1.3 Procedure in the event of a malfunction
If the fault cannot be rectified using the procedures described in chapter
"Troubleshooting", proceed as follows:
•Switch off the main switch and secure it against being switched on again (unau-
thorised use).
•Contact service team.
1.4 Procedure in the event of an accident
•Notify first aiders, the ambulance service and/or immediate care doctor:
oWhere did the accident happen (address, workshop ...)?
oWhat happened?
oHow many are injured?
oWhat injuries have occurred?
oWho is reporting the accident?
•Keep calm and answer questions.
1.5 Requirements for operators and service personnel
Only persons qualified for testing in accordance with TRBS 1203 may be used as service
personnel.
All persons involved in the operation, maintenance, assembly, dismantling and
disposal of the equipment must
•be 18 years of age or older,
•have the mental and physical capacity for their role,
•be demonstrably trained and instructed,
•have read and understood the operating instructions, in particular the instructions
on how to behave in the event of a malfunction and on proper use,
•the locally applicable regulations on occupational health and safety must be ob-
served,
•show knowledge and experience in handling the equipment and the dangers
posed.

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2Description
2.1 Service life
The test bench is designed for a service life of approx. 10 years. This depends, among
other things, on the existing operating conditions. After this period, the test bench
must be replaced with a new product or undergo a general overhaul.
A general overhaul should only be carried out by the manufacturer or persons
authorized by them. Among other things, the safety structures are to be inspected
and, if necessary, other parts are to be replaced in accordance with the manufacturer's
specifications.
2.2 General machine description
2.2.1 Structure and legend
Structure of the test bench
1
Immediate danger zone around the test bench (within the inner yel-
low/black markings)
2
Area of the vehicle parking area before and after the test bench
3
Side area to the left and right of the test bench
8
7
3
3
6
5
4
2
2
1

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4
Brake tester
5
Control cabinet
6
Universal console
7
Simultaneous display, analogue / TV screen
8
Mobile devices (browser capable) with touch screen / WiFi router
2.2.2 Description of the test bench
In order to prevent dangerous situations in road traffic caused by a defective braking
system of a vehicle, motor vehicles should be subjected to a brake performance test at
regular intervals and e.g. after repairs. This is generally done on a brake tester.
The present roller brake tester allows wheel- and axle-wise dynamic braking and
essentially consists of a base assembly, a control unit and a display unit.
Components for driving the rollers and for absorbing the braking forces are installed in
the floor assembly: Test roller(s), sensing roller(s), drive motors, strain gauge bending
beam for measuring the braking force and various sensors. These sensors are plugged
into an interface module in the floor assembly, which is connected to the control unit
via cable.
The control unit consists of a control box with electronic components and a central
control board (central module) with firmware and the operating elements required for
safe operation.
In the simplest case, the display unit is a monitor of an existing PC or a notebook in the
immediate vicinity of the test bench and is connected to the control unit via LAN cable
or wirelessly via WiFi.
Furthermore, a commercially available TV monitor (together with a MAHA C_BOX) or
the MAHA universal analogue display can be used as a simultaneous display.
If WiFi is available, a browser-capable smart device (mobile phone, tablet PC, etc.) can
also be used as a display and operating unit.
On the one hand, the display is used for status indication of the system, user guidance
and visualization of the measured values; on the other hand, operating options can be
selected or data can be stored with the corresponding input device.
Function of a roller brake tester
To measure the braking forces of a motor vehicle, the test bench is driven over with a
vehicle axle. The wheel(s) of the motor vehicle is/are brought to a preset speed by
motor-driven rollers.
As soon as the set engine speed is reached, the operator is prompted to apply the
service or parking brake, slowly increasing the braking force.
The rotatably mounted drive motor would rotate freely during operation. This is
prevented by the bending beam (range spring). This connects the housing of the drive
motor to the test bench frame and thus forms a torque support.

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The range spring now bends according to the torque generated by the motor. An
applied strain gauge converts the mechanical deformation of the range spring into
electrical signals, which can be converted into a braking torque in the control system
and visualized via a display unit.
The sensing roller directly measures the wheel speed. The magnitude of the slip can be
determined by comparing the drive speed with the sensing roller speed –both values
determined via sensors. To avoid unnecessary tyre wear, MAHA test benches switch
off automatically when the (legally) specified maximum slip is reached.
2.2.3 Intended use
•This test bench is used exclusively for testing the braking efficiency of motor vehi-
cles. The permitted axle load must be observed.
•The test bench must not be modified without express written permission from the
manufacturer. Non-compliance invalidates the declaration of conformity.
•The operator must carry out a workplace hazard assessment for the test bench in-
cluding the available options.
•The test bench must not be set up in explosion and fire hazard areas and in damp
rooms (e.g. washing halls).
•The test bench is suitable for the temperature range 5...40 °C, for a maximum hu-
midity of 50 % (at 40 °C) and for an altitude of up to 1000 m above mean sea level.
•Depending on the equipment, the test bench can also be set up outdoors. Prior
consultation necessary.
2.2.4 Brake test of vehicles with one driven axle
The vehicle is driven into the roller set with the axle to be tested. At the same time,
the two sensing rollers that measure the wheel speed are pressed down. A warning
message is issued and after approx. 3 seconds the two drive motors of the roller set
are started so that both vehicle wheels turn in the forward direction.
As soon as the nominal speed is reached, the “Ready for braking” LED lights up or the
corresponding user message appears on the respective display unit. This signals that
the inspector can begin the braking process. To test the brakes, increase the force on
the brake pedal or parking brake lever quickly but not jerkily. In conjunction with an
electronic parking brake, this must be checked in accordance with the manufacturer's
specifications, usually by pressing the control button for the electronic parking brake
several times in quick succession.
Braking should only be applied until the required deceleration for the vehicle is
reached, braking up to slip cut-off is not mandatory. In this way, unnecessary tyre wear
can be avoided.
During the braking process, the speed of the drive roller and the sensing roller is
constantly compared. If braking is so severe that at least one sensing roller exceeds the
maximum permitted slip (e.g. 27 % slip), the drive motors are automatically switched
off. This serves both to protect the drive motors from overload and to protect the tyres

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from excessive tread wear. On light vehicles, even a small amount of slip can cause
tyre damage.
2.2.5 Brake test of four-wheel drive vehicles
NOTICE
In order to avoid stresses in the drive train and resulting damage, care must be taken
with four-wheel drive vehicles to ensure that
–the manufacturer's specifications are fully observed.
–a suitable test mode is selected on the brake tester depending on the vehicle make
and model.
Mode 1: Standard brake tester (1-axle), direction of rotation both wheels forward
This mode is only conditionally suitable for testing four-wheel drive vehicles.
On vehicles where the four-wheel drive system can be deactivated by switching off the
ignition, it should be noted that the roller set must not be restarted automatically after
the brake efficiency test has been carried out. Exiting the test bench is therefore only
possible when the rollers are stationary. The ignition of the vehicle must not be
switched on under any circumstances when the test bench rollers are rotating, as
otherwise the abrupt frictional connection will put mechanical stress on the
differential.
Vehicles in which the four-wheel drive system has been deactivated by removing fuses
behave like a conventional two-wheel drive, i.e. the test bench can be left with the
rollers rotating. The fuse shall not be reinserted until the brake performance test has
been completed and the vehicle has finally exited the test bench.
Mode 2: Counter-rotation operation in main and reverse direction for four-wheel
drive test, axle-wise left forward / right reverse rotation or vice versa
If the counter-rotation mode is selected before driving onto the test bench, the test
rollers start in counter-rotation and there is no power transmission via the drive train.
In the brake efficiency test, only the forward rotating wheel is measured. Thus, two
measuring processes must take place for the testing of an axle, between which the
direction of rotation is reversed.
NOTICE
In the case of counter-rotating operation, it is advisable to test in semi-automatic
mode, so that when the rollers are stationary, the test bench can be exited without
creating the above-mentioned stresses in the drive train.
An electromechanical motor brake, which is available as an option, further facilitates
extension.

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Mode 3: Automatic four-wheel drive detection
In this mode the starting resistance of the vehicle axle is monitored and evaluated. This
detects a vehicle axle that is not freewheeling, and an automatic switchover to reverse
operation takes place.
During the braking efficiency test, two measuring processes take place, between which
the direction of rotation is automatically reversed. The braking force of the respective
wheel turning forwards is measured.
After completion of the two measurements, the test bench rollers remain stationary
until the vehicle has exited the test bench.
NOTICE
•In the case of automatic four-wheel drive detection, the vehicle engine must NOT
be switched off after driving on the test bench, otherwise correct four-wheel drive
detection is not possible.
•In the case of counter-rotation operation, it is recommended to use a pedal force
meter as a measurement reference to determine the actual brake force differ-
ence.

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2.2.6 Overview with components
1
Test bench rollers
2
Electric motor
3
Sensing roller with slip and drive sensor (Namur)
4
Middle cover (shown transparently)
5
Bearing cover (shown transparent)
6
IFM (Interface module)
Overview with components

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2.3 Technical data
C_MBT C 3.5
W220
C_MBT C 3.5
W250
C_MBT S 3.5
W250
C_MBT S 3.5
W220
Track 2.20 RS 2
Track 2.50 RS 4
Track 2.50 RS 4
Track 2.20 RS 2
unsplit
unsplit
split
split
Axle load [kg]
3500
3500
3500
3500
Track width min. [mm]
780
780
780
780
Track width max. [mm]
2200
2500
2500
2200
Drive power
3 kW
3 kW
3 kW
3 kW
Test speed
5 km/h
5 km/h
5 km/h
5 km/h
Roller length [mm]
730
892
892
730
Roller diameter [mm]
202
202
202
202
Roller axle distance [mm]
400
400
400
400
Test roller with welded
textured surface, friction
coefficient dry / wet
0.9 / 0.7
0.9 / 0.7
0.9 / 0.7
0.9 / 0.7
Test roller with plastic /
granulate coating, friction
value dry / wet
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
MIXED roller, friction coef-
ficient dry / wet
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
Measuring range
0 –8 kN
0 –8 kN
0 –8 kN
0 –8 kN
Measuring range MIXED
roller
0 –6 kN
0 –6 kN
0 –6 kN
0 –6 kN
Display accuracy (full
scale)
2 %
2 %
2 %
2 %
Fuse
25 A gG
25 A gG
25 A gG
25 A gG
Power supply
3x 400 V +N +PE
50 Hz
3x 400 V +N +PE
50 Hz
3x 400 V +N +PE
50 Hz
3x 400 V +N +PE
50 Hz
Minimum cable cross-
section Supply line*
5 x 4.0 mm²
5 x 4.0 mm²
5 x 4.0 mm²
5 x 4.0 mm²
Dimensions H x W x L
[mm]
280 x 680 x 2,320
280 x 680 x 2,644
280 x 680 x 1,582
280 x 680 x 1,420

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C_MBT C 4.0
W220
C_MBT C 4.0
W250
C_MBT S 4.0
W250
C_MBT S 4.0
W220
Track 2.20 RS 2
Track 2.50 RS 4
Track 2.50 RS 4
Track 2.20 RS 2
unsplit
unsplit
split
split
Axle load [kg]
4000
4000
4000
4000
Track width min. [mm]
780
780
780
780
Track width max. [mm]
2200
2500
2500
2200
Drive power
4 kW
4 kW
4 kW
4 kW
Test speed
5 km/h
5 km/h
5 km/h
5 km/h
Roller length [mm]
730
892
892
730
Roller diameter [mm]
202
202
202
202
Roller axle distance [mm]
400
400
400
400
Test roller with welded
textured surface, friction
coefficient dry / wet
0.9 / 0.7
0.9 / 0.7
0.9 / 0.7
0.9 / 0.7
Test roller with plastic /
granulate coating, friction
value dry / wet
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
MIXED roller, friction coef-
ficient dry / wet
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
0.9 / 0.8
Measuring range
0 –8 kN
0 –8 kN
0 –8 kN
0 –8 kN
Measuring range MIXED
roller
0 –6 kN
0 –6 kN
0 –6 kN
0 –6 kN
Display accuracy (full
scale)
2 %
2 %
2 %
2 %
Fuse
25 A gG
25 A gG
25 A gG
25 A gG
Power supply
3x 400 V +N +PE
50 Hz
3x 400 V +N +PE
50 Hz
3x 400 V +N +PE
50 Hz
3x 400 V +N +PE
50 Hz
Minimum cable cross-
section Supply line*
5 x 4.0 mm²
5 x 4.0 mm²
5 x 4.0 mm²
5 x 4.0 mm²
Dimensions H x W x L
[mm]
280 x 680 x 2,320
280 x 680 x 2.644
280 x 680 x 1,582
280 x 680 x 1,420

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C_MBT C 5.0
W280
C_MBT C 5.0
W280
Track 2.80 RS 5
Track 2.80 RS 5
unsplit
split
Axle load [kg]
5000
5000
Track width min. [mm]
780
780
Track width max. [mm]
2800
2800
Drive power
4 kW
4 kW
Test speed
5 km/h
5 km/h
Roller length [mm]
1032
1032
Roller diameter [mm]
202
202
Roller axle distance [mm]
400
400
Test roller with welded
textured surface, friction
coefficient dry / wet
0.9 / 0.7
0.9 / 0.7
Test roller with plastic /
granulate coating, friction
value dry / wet
0.9 / 0.8
0.9 / 0.8
MIXED roller, friction coef-
ficient dry / wet
0.9 / 0.8
0.9 / 0.8
Measuring range
0 –8 kN
0 –8 kN
Measuring range MIXED
roller
0 –6 kN
0 –6 kN
Display accuracy (full
scale)
2 %
2 %
Fuse
25 A gG
25 A gG
Power supply
3x 400 V +N +PE
50 Hz
3x 400 V +N +PE
50 Hz
Minimum cable cross-
section Supply line*
5 x 4.0 mm²
5 x 4.0 mm²
Dimensions H x W x L
[mm]
280 x 680 x 2.924
280 x 680 x 1,722
* Cable cross-section depending on local conditions (e.g. ambient temperature, type of installation, cable
length, mains impedance) and local regulations.

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2.3.1 Safety area
When operating the test bench, there must be no persons or obstacles (danger of
crushing) in the safety area. This shall be indicated by a yellow and black marking
around the test bench.
Safety area

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2.3.2 Set-up diagram
Set-up diagram I

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Set-up diagram II