Schaeffler Technologies
BA 67
19
Signals for dispensing lubricant
The lubricator only processes defined control signals. The pulse
signals for controlling the pump bodies are defined for the following
factors:
■
are stated in seconds
■
accuracy
⫾
0,1 s
■
pause time between two pulses as a function of the signal.
The input signal with a defined signal length (HIGH level) is sent from
the external controller to the lubricator. Immediately after the input
signal drops, the motor starts running and the defined lubricant
quantity is transported to the outlet. At the same time, the device
sends a LOW level as an output signal to the external controller
while the motor is running.
The lubricator sends a continuous output signal (HIGH level) to
PIN 4, which indicates to the external controller that it is ready
for operation. The input signal is only registered if the prior output
signal was at a constant HIGH level for at least three seconds.
The motor running time is dependent on various conditions, such as
the design of the hydraulic system, back pressure and temperature.
For reasons of functional safety, no input signals are detected while
the piston pump motors are running if external control by means of a
PLC is used.
Further information
Further information can be found in TPI 252, Lubricators.
Summary of Contents for CONCEPT4
Page 1: ...Lubricators CONCEPT4 User manual...
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