23
FB 430 / FB 450 / FB 500 / FB 510
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: 101498D
-GB 2103
ACCESSORIES
Swepac Compaction Indicator (SCI)
SCI consists of an accelerometer sensor mounted on the right side of the vibration element, and a display unit provided with LEDs
that light up as the compaction progresses. The sensor and the display are connected with a cable. The display is also powered by a
separate cable.
The Principle:
The base plate motion characteristics vary with increasing or decreasing soil compaction. The sensor continuously measures the
variations in the base plate movement. The data from this is analyzed in the processor, which in turn sends signals to the display to
visualize this with the lights.
When starting:
When starting with the ignition key, the yellow LEDs 1, 3, 5, 7 will flash at first and thereafter the LEDs 2, 4, 6, 8 will flash.
The diodes remain lit until communication with the sensor is operating. This normally takes a second. If the power supply is
interrupted or communication stops for more than 20 seconds, the flashing LED pattern returns until the communication works
again. Thereafter, all the LEDs will be turned off and the indicator is ready for operation.
After starting the machine or after onset of vibrations (FB450 and FB510), it will take 2-3 seconds before the indicator starts to
record the movements of the base plate. The reason is that the sensor does not start measuring until the vibrator generates the
correct frequency on the base plate. The display will not indicate anything if the speed of the engine is reduced since the vibrator
then is slower and the base plate does not reach the right frequency.
No calibration of the indicator is required when starting the machine.
During use:
When operating, the LED lights will illuminate from left to right. The number of lights that are lit during operation is dependent
on soil quality and characteristics. When the number of lit lights do not increase, the ground will not be compacted further at other
crossings. It therefore means that all lamps will not necessarily be lit during the compaction work.
The lights indicate the surface’s compression status during the work. If no more lights are lit, the maximum compaction of the
substrate is achieved. Swepac Compaction Indicator is no substitute for the conventional assay of the degree of compaction but is
used to provide the operator with useful information such as finding areas that are not compacted or to avoid overcompacting with
the risk of damage to the machine.
