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6.3.2 Modes of operation
The lubrication process can be controlled
either automatically, semi-automatically or
completely via CAN commands.
6.3.2.1 Automatic control
In this operating mode, the control unit
handles all control and monitoring of the
lubrication process. The pump motor and
valves cannot be controlled using CAN com-
mands. Only the CAN command START/STOP
is allowed.
The control unit controls the following func-
tions based on the set parameters:
Starting and switching off the pump
Opening and closing the valves of the
lubrication zones
The interval time and pump cycle time are
the most important parameters for controlling
these processes. They can be set in different
ways.
Timer mode
In timer mode, the interval time for each lubri-
cation zone is determined by a time value. It is
conigured by entering a time value in minutes
and/or hours.
The pump cycle time for each lubrication zone
is conigured using a time value in hours,
minutes and seconds. The pump cycle time for
units with W1 ill level control can also be set
in pulses, i.e., the number of agitator revolu-
tions.
Control using machine pulses
(Counter mode
= load-dependent lubrication
)
The duration of the interval time is determined
by a pulse generator that sends pulses to the
control unit based on how long the machine
has been running. The control unit counts the
pulses that are received and starts the pump
or opens the corresponding zone valve after
the preset number of pulses. The pump cycle
time is deined by a time value. Both the num
-
ber of pulses that determine the interval time
and the pump cycle time can be conigured.
When multiple lubrication zones are used,
multiple zone valves may be addressed at the
same time in automatic mode (given the cor-
responding parameters) or in block operation.
In this case, the control unit opens the valves
in a carefully coordinated sequence so that
only one valve is activated at a time, while still
providing all feeders with lubrication. The re-
sult is that the pump cycle time for each zone
is maintained.
6. Functional description in progressive systems
KF
G
C
Summary of Contents for KFG
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