Epec 4W30 is a system designed for control of the grapple functions.
There are separate control buttons for each grapple function (generally
in the control levers of the machine) for control of each function
separately.
The tree can be fed either automatically or manually. Automatic feed is
started by selecting the desired length via the preselection keyboard of
the measuring equipment. Then the tree will automatically be fed to the
selected length. Manual feed is carried out according to the sections
Feed forward, Feed backward and Low speed in this manual.
Epec 4W30 consists of three modules (display module, cabin module
and grapple module), bus distribution unit, preselection keyboard (PS),
programming wheel and control keys. The modules are interconnected
with a CAN bus. CAN bus (Controller Area Network) is fast data
transmission bus and it has high error immunity.
The preselection keyboard is either integrated into the levers or installed
very close to the control levers of the machine. The preselection
keyboard is used for selection of the product to be made (tree species,
wood type, length, tolerance and top diameter limit).
In order to achieve blameless operation it is important to read the
instructions for use carefully and to understand the meaning of the
different settings before starting to use the equipment. The length and
diameter must also be calibrated and all settings must be checked by
setting a reasonable value (if necessary) for each of them.
When the diameter is mentioned in this manual, it is supposed that a
diameter sensor is in use. If the diameter is not in use, the diameter
limits will not influence feeding to the preselected length.
NOTE!
Prefer not to switch the measuring equipment on until the machine is
running, since there can often occur disturbances in the electric system
of the forest machine in connection with start-up.
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