Revision: 0
FlexxPump4 D
User Manual
32
EN-
Description:
The FP4 D is properly connected to an external controller via the electrical interface
and connected to the power supply.
The FP4 D sends a permanent output signal (high level) to PIN 4, which indicates to
the external control (PLC) that it is ready for operation. This output signal must be per-
manently and continuously present for >3 seconds. Control by the external controller is
only possible if this condition is present.
The control signal 2 seconds with a signal length of 8 (7.9 ... 8.1) seconds high level
can be sent from the external control (PLC) to the FP4 D.
Immediately after the control signal drops, the motor run (ML) of the FP4 D starts and
0.16 cm³ lubricant is conveyed to the outlet. Simultaneously with the start of the motor
run (ML), the FP4 D sends a low level output signal to the external controller (PLC) as
confirmation for the duration of the motor run (ML).
The motor running time (ML) depends on various conditions, including the counter-
pressure present or built up in the hydraulic system and the temperature. With the FP4
D, the motor running time (ML) is 7...17 seconds.
At the end of an error-free and successful motor run (ML), the output signal at FP4 D
changes from a low level to a high level.
A possible next control signal can be sent from the external controller (PLC) at the
earliest >3 seconds after the end of the error-free and successful motor run. In the
meantime, the FP4 D does not process any control signals.
In order to ensure a reliable and unambiguous recognition of the control signal, a
pause must be observed. For the control signal 8 seconds, the FP4 D requires a pause
time (Tp) of at least 47 seconds between two identical or different control signals.
If the integrated microelectronics of the FP4 D has detected an error during or imme-
diately after the end of the motor run (ML), this is transmitted to the external controller
(PLC) by the corresponding output signal (section 8.3).
