SKF KFG, Руководство по сборке

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Page 57
EN
6.3 Functional description of progressive
system with KFGC (CAN bus) pump unit
The general functional description for pro-
gressive systems with a KFGS pump unit also
applies for the design with CAN bus pump
control.
The integrated LC-CAN 5000 control unit
permits the lubrication zone of a progressive
feeder system to be distributed into individual
lubrication zones which can be conigured with
individual parameters (e.g., contact and inter-
val times). Up to four lubrication zones can be
installed in total.
To distribute the lubricant, a corresponding
number of electric switch valves is installed in
the lubrication line leading from the pump ele-
ment. A valve is opened as soon as the control
unit starts a pump cycle for the corresponding
lubrication zone.
The pump can only provide adequate lubrica-
tion to one lubrication zone at a time, so it
must be ensured that only one valve is opened
during operation. This is handled by the control
unit in automatic and semiautomatic opera-
tion.
When CAN commands are used for control,
valve opening must be ensured by selecting
the appropriate contact and interval times or
by using appropriately programmed processes
in the external lubrication program to switch
the valves in a carefully coordinated sequence
so that only one valve is activated at a time. 6.3.1 Explanations of the lubrication pro-
cess and lubrication cycle
The lubrication cycle/process is divided into a
pump cycle time and an interval time because
the lubrication points only require lubrication
at certain intervals. A lubrication cycle always
begins with a pump cycle.
Progressive system with KFGC (CAN bus) pump unit
KF
G
C
CAN-Bus (SAE J1939)
6. Functional description in progressive systems
KF
G
C