revision: 1
FlexxPump 250/400 DLS
User Manual
34
EN-
Description:
The FlexxPump 250/400 DLS is properly connected to an external controller via the
electrical interface and connected to the power supply.
The FlexxPump 250/400 DLS 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 permanently 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 12 (11.9 ... 12.1) seconds high
level can be sent from the external control (PLC) to the FlexxPump 250/400 DLS.
Immediately after the control signal drops, the motor run (ML) of the
FlexxPump 250/400 DLS starts and 0.15 cm³ lubricant is conveyed to the outlet.
Simultaneously with the start of the motor run (ML), the FlexxPump 250/400 DLS 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
counterpressure present or built up in the hydraulic system and the temperature. With
the FlexxPump 250/400 DLS, the motor running time (ML) is 7...17 seconds.
At the end of each error-free and successful motor run (ML), the output signal at the
FlexxPump 250/400 DLS changes from a low level to a high level for a short pause
time P = 0.5 seconds.
A total of 40 engine runs and donations will take place immediately one after the
other. 40 x 0.15 cm³ = 6.0 cm³ lubricant is conveyed from the cartridge to the outlet.
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 FlexxPump 250/400 DLS 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 12 seconds, the
FlexxPump 250/400 DLS has a pause time (Tp) between two identical or different
control signals of at least 706 (Tp=ML
max
x40 strokes+Px40 strokes+tolerance) seconds.
For an FlexxPump 250/400 DLS with two pump units, 40 lling strokes per pump
unit are triggered when the control signal is triggered for 12 seconds. The pause time
(Tp) is doubled.
If the integrated microelectronics of the FlexxPump 250/400 DLS has detected an
error during or immediately after the end of the motor run (ML), it is transmitted to the
external controller (PLC) by the corresponding output signal (section 8.3).
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