Pump units of the KFG, KFGS and KFGC (CAN bus) series for vehicle lubrication
51-3035-EN
Functional description of progressive
system with KFG pump unit
A general progressive feeder system con-•
sists of the following components: Pump
unit with pump element and pressure
regulating valve
Lubricant lines•
Progressive feeders•
When the pump motor is turned on, the pi-
ston pump delivers lubricant from the lubri-
cant reservoir to the lubricant outlet. The
pump element attached to the outlet delivers
the lubricant further, into the downstream
main line. The lubricant flows through the
main line to the progressive feeder. There, the
lubricant is distributed according to the volu-
me required by the lubrication point being
supplied. In progressive systems with a master
feeder and secondary feeder, the lubricant co-
ming from the pump unit is delivered to the
master feeder. The master feeder distri-
butes the lubricant to the secondary feeders
according to their individual volume require-
ments. From there, the lubricant flows to the
lubrication points.
Example of progressive system with KFG pump unit
3
2
7
6 6
5
4
4
4
1
Progressive system with KFG pump unit
1 KFG unit
2 Electrical pump connection
3 Pump element with
pressure regulating valve
4 Lubricant line
5 Master feeder
6 Secondary feeder
7 Lubrication points
Functional description of progressive
system with KFGS pump unit
The general functional description for progres-
sive systems with a KFG pump unit also ap-
plies for the design with KFGS pump control.
The control unit integrated into the pump
housing allows the following additional con-
figuration, monitoring and connectivity op-
tions:
Interval time and contact time can be•
adjusted independently, including on moni-
tored systems
Recording of remaining intervals and•
remaining lubrication times
Data backup in case of voltage failure•
Non-volatile memory with PIN code•
protection
Connectivity for inductive piston detector•
to monitor the feeder functionConnectivity
for external pushbutton Internal fill level
monitoring (W1 control); lubrication cycle
is halted and a fault signal is sent if the fill
level falls below minimum
KFGS progressive system with piston detector
1 KFGS unit
2 Power supply
3 Fault indicator light
4 Pump element with
pressure regulating valve
5 Lubricant line
6 Master feeder
7 Piston detector
8 Secondary feeder
9 Lubrication points
Example of progressive system with KFGS pump unit
2
3
4
7
9
8 8
6
5
5
5
1
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-CAN5000 control
unit permits the lubrication zone of a pro-
gressive feeder system to be distributed into
individual lubrication zones for which individ-
ual parameters (e.g. contact and interval
times) can be set. Up to four lubrication sec-
tions can be installed in total. To distribute the
lubricant, a corresponding number of electric
switch valves is installed in the lubricant line
leading from the pump element. A valve is
opened as soon as the control unit starts a
pump cycle period for the corresponding lu-
brication segment. The pump can only pro-
vide one lubrication segment with adequate
lubrication, so it must be ensured that only
one valve is opened during operation. This is
handled by the internal control unit in auto-
matic and semiautomatic operation.
A 5/4 directional solenoid valve can optionally
be used in place of single valves.
Progressive system with KFGC (CAN bus) pump unit
