BPS – K – 3.0 – 6.0
Sherpa
Autodiagnostik
page: 14
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The roller sets
only rest on the set screws which are attached to the four corners underneath.
By this means the roller set can be adjusted in height up to minus or plus 10 cm. In order to
prevent the set screws from being in direct contact with the concrete underneath, the roller set
comes with metal sheets. These contact sheets have to be attached to the side of the foundation
by means of dowels.
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The option weighing unit
includes sensors which are attached next to the screw holes. In this
way the set screws can be screwed into the sensors.
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To prevent the roller sets from slipping,
the roller sets are firmly attached to the foundation by
means of adjusting screws at the side.
If the weighing unit is in operation
, the roller set must
not be attached to the foundation firmly but built in leaving a small gap between the set screws
and the foundation wall.
4.2.2
Control Box
-
The control box is the brain of the test unit
. There are printed circuit boards, contactors, the
main switch (emergency switch-off) and other switches or buttons in the control box. See
operating manual.
- For this reason
the control box
should be mounted in the direct vicinity of the roller set.
- The analogue displays, the PC converter box and the print box are connected to the control box.
- The whole data transfer happens in
the bus system
.
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Self test / zero balance:
A permanent self test is carried out by all safety-relevant components
(sensors and electronics) ready for operation. A drift in temperature in force transducers will be
compensated for by a dynamic point zero adjustment. This adjustment is carried out regularly
every 2 minutes when the force transducers are not in use and ready for operation.
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Natural frequency / attenuation:
The measuring steps are smaller than 1 % of the final
measuring range value.
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Functional defects:
Functional defects are recognized and illustrated by the electronics. They
can be identified with the help of the error checklist. (see operating manual)
4.2.3
Illustration and printout of the measurement results
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The moving-needle analogue display
consists of two neighbouring displays indicating the
braking force for left and right respectively. It can be used either as a master or a simultaneous
display.
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For the PC converter box
which uses the „SherlanePC“software, an external PC unit including
a display is necessary.
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Printing
can be achieved via the PC unit or by means of the option "print box" via a separate,
conventional printer. After the completion of the test procedure in every operating mode (see
section 3.12), use the computer keyboard or the remote control to print.
