VOSS OBW 501 User manual

Assembly instructions
VOSS OBW 501
SG sensor
Strain gauge sensor for on-board weighing systems
Axle weight measuring –
at its most precise way

Assembly instructions VOSS OBW 501
SG sensor
, Page 2 of 23
A. Important notices
Please observe before using the VOSS OBW 501
SG sensor
VOSS
OBW 501
SG sensor
is suitable for axles in commercial vehicles, off-road vehicles and light
duty vehicles.
Before starting with the assembly process of the VOSS OBW 501
SG sensor
, carefully read these
assembly instructions and make sure that you have understood these.
Before starting with the assembly process, provide the required materials and tools,
mentioned in chapter “C. Assembly instructions”.
The sensor / system must be installed and connected in accordance with the regulations valid
for the vehicle and country in question.
Make sure ignition is switched off before starting any installation.
The sensor has to be stored dry and free from humidity.
Do not remove the sensor from the ESD protection bag before installing it in the vehicle.
Do not use the sensor data to control safety-relevant vehicle functions, e.g. ABS or ESP.
Liability:
All damages (e.g. recalls, customer services, expenses, compensation, etc.) are limited by
the respective order amount.
Damages shall be paid, if VOSS is solely liable (gross negligence or intent required). Only the
actual damage will be compensated.
Under no circumstances shall VOSS be liable to the purchaser for liquidated
damages/contractual penalties and/or financial losses such as expected or lost profits, loss of
production, interest, penalties or for incidental, consequential, special, exemplary or criminal
damages in connection with the contract.
Should VOSS be held liable by third parties (e.g. due to product liability claims), the
purchaser shall indemnify VOSS against all claims.

Assembly instructions VOSS OBW 501
SG sensor
, Page 3 of 23
Please observe during the assembly of the VOSS OBW 501
SG sensor
The assembly of the VOSS
OBW 501
SG sensor
must be conducted by professional mechanics
subject to these assembly instructions.
Incorrectly assembled sensors can result in failure of the system.
Before using the sensor, components must be checked. They have to be clean and must not
show any signs of damage. In case of any damage, the sensor has to be replaced.
Handle sensor with care to avoid damage due to mechanical shock and electrostatic
discharge.
VOSS
OBW 501
SG sensor
is measuring the strain of the material. To make sure the sensor can
measure correctly, the surface has to be clean, straight and free from grease or other release
agents (see chapter “C. Assembly instructions 1. Grinding and cleaning of surfaces”).
To protect the sensor, it hast to be covered by a protection cover and by sealing. The cable has
always to be protected by a corrugated tube. Avoid bending the cable around sharp edges
and below the specified minimum bending radius of 35 mm. The sensor will be adhesive
bonded and the cable fixed on the chassis (see chapter “C. Assembly instructions 2. Assembly
of VOSS OBW 501
SG sensor
”). It is recommended to apply a first fixation of supply cable at a
distance of 150 mm behind the protection cover.
The sensor has a 3-wire harness. For connection and setup instructions see chapter
“C. Assembly instructions 3. Setup of VOSS OBW 501
SG sensor
”.
System properties
For detailed system properties and technical data please check latest available version of
“Product information VOSS OBW 501
SG sensor
” (Art. No. 7007734000) on
www.voss-automotive.net/en/downloads.
!
!
!
!
!
!
!

Assembly instructions VOSS OBW 501
SG sensor
, Page 4 of 23
B. Components and materials
1. VOSS OBW 501
SG sensor
Fig. 1: VOSS OBW 501
SG sensor
with cable Fig 2: VOSS OBW 501
SG sensor
with metal protection
cover and corrugated tube
2. Electrical connection possibilities
Fig 3: Connector Tyco HDSCS

Pin1: VBAT

Pin2: GND

Pin3: Signal
Fig 4: Open wire; wire configuration:

VBAT (Red)

GND (Brown)

Signal (White)

Assembly instructions VOSS OBW 501
SG sensor
, Page 5 of 23
3. Complete sensor set
Fig 5: VOSS OBW 501
SG sensor
with Tyco HDSCS and metal protection cover (complete sensor set)