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Interval time
During an interval time, also called interval for
short, the pump is idle or, if multiple lubrica-
tion zones are used, the inlet valve for the
lubrication zone in question is closed.
The duration of the interval time can be
conigured.
In automatic mode (see Chapter 6.3.2.1), the
interval time can be determined in two dif-
ferent ways: by specifying either a time value
or an external number of pulses sent to the
control unit by the machine depending on how
long it has been running. This provides two
different means of control: timer mode and
counter mode.
7.3.3.1 Modes of operation
The lubrication process can be controlled
either automatically, semi-automatically or
completely via CAN commands.
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 is conigured for each
lubrication zone 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 a pump
cycle after the preset number of pulses. Both
the number 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.
7. Functional description in single-line systems
KF
G
C
Summary of Contents for KFG
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