FDM P 605, Руководство пользователя, Страница: 139 / 181

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7 Technical Reference 7.6 Interface Description
7.6.4 Goal
To eliminate situations that can cause harm,
i.e. injury, damage to health or property and
unsatisfactory process result are e.g.:
Situation Effect
Unbalance caused by uneven sediment
accumulation in the bowl. Too high stress on bowl and bearing system
which might cause harm.
Too high bowl speed. Too high stress on bowl which might cause harm.
Access to moving parts. Can cause injury to person who accidentally
touches these parts.
Insufficient cleaning of separator. Unsatisfactory product quality.
Bowl leakage. Product losses.
Information and instructions given in this
document aim at preventing these situations.
Control and supervision can be more or less
comprehensive depending on the type of used
control equipment. When a simple control unit
is used it would be impossible or too expensive
to include many of the functions specified here
while these functions could be included at nearly
no extra cost when a more advanced control
unit is used. For this reasons functions that
are indispensable or needed for safety reasons
to protect the machine and/or personnel are
denoted with
shall while other functions are
denoted with should .
7.6.5 Description of separator modes
For control purposes the operation of the
separator should be divided into different
modes.The normally used modes are described
below but other modes might exist . It is
assumed that:
• The separator is correctly assembled.
• All connections are made according to
Connection List, Interconnection Diagram and
Interface Description.
• The separator control system is activated.
If above conditions are not fulfilled the separator
is unready for operation.
Stand still means:
• The power to the separator motor is off
• The bowl is not rotating.
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