DLS FlexxPump 250 DLS - Page 39

revision: 1
FlexxPump 250/400 DLS
User Manual
39
EN-
The transition of the output signals when changing a cartridge on the Flexx-
Pump 250/400 DLS is shown and described below:
U
24V
0V
t
PIN 4
E1 0,5 Hz E1 low
Z1 Z2
Description:
The FlexxPump 250/400 DLS is properly connected to an external controller via the
electrical interface and connected to the power supply.
The empty state of the cartridge occurred after a donation, the output signal of the
FlexxPump 250/400 DLS is initially the 0.5Hz square wave signal (empty state signal)
(0/+24 V).
Z1 indicates the time of removal of the empty cartridge. The output signal of
the FlexxPump 250/400 DLS now changes from a 0.5Hz square wave signal to a
permanent low signal (0V).
Z2 indicates the time for screwing on a new, full cartridge. The output signal of
the FlexxPump 250/400 DLS now changes from a permanent low signal (0V) to a
permanent high signal (+24V). In this way the FlexxPump 250/400 DLS signals to the
external controller (PLC) that it is ready for operation again.
If the empty state signal has occurred during the execution of the control signal
12 seconds, the outstanding strokes are continued after the new cartridge has been
screwed on.
 The FlexxPump 250/400 DLS does not process control signals until all errors have
been eliminated.
Z1: Removing the empty cartridge
Z2: Mounting the new cartridge