User manual 250/400 OLED
Rev.: SG-20220516
Page 58 of 79
FlexxPump 250 / 400 OLED
User manual
The following signals from the previous version can also be used if the FP 400 OLED is to be used as
a replacement for them. In this case, observe the relevant chapters in the operating instructions for the
previous version.
Signal length I [ms]
Function
200
1 lubrication stroke
1200
Filling
1400
Cancel filling
8.2. Input signals – External control (PLC)
The FP 250/400 OLED provides the following invariably defined control signals (input signals), which
must be transmitted from the PLC to the FP 250/400 OLED via PIN 2 of the electrical M12x1 interface
as high level (+24 V DC).
The control signals must be generated as high level (+24 V DC) by the external control (PLC) over
specific times, each with a tolerance of ±25 milliseconds.
The FP 250/400 OLED processes the following control/input signals:
Signal length I [ms]
Function
Detail
100
1 lubrication stroke
Chap. 8.2.1.
900
Filling
Chap. 8.2.2.
1000
Cancel filling
Chap. 8.2.3.
1600
Status request (sign of presence)
Chap. 8.2.4.
1700
Acknowledge error
Chap. 8.2.5.
For the electrical connection to the external control system (PLC) of a machine, the FP 250/400 OLED
has a 4-pin interface, which is designed as a plug-in connection with the industry-standard M12x1
connection.
The FP 250/400 OLED can be switched off completely in pulse control mode by switching off the
supply voltage. The settings made are not lost in the process. After the supply voltage is reconnected,
the FP 250/400 OLED checks itself automatically and does not operate until it receives a control signal
from the PLC.
The output signal at PIN 4 must be tapped at an external control for further processing. The maximum
permissible output current must not exceed I
max
< 20mA. No inductive load (e.g. relay) may be connected!
After a longer standstill of the FP 250/400 OLED, it is recommended to trigger the control signal „1
lubrication stroke“ twice manually (100 ms) (chap. 8.2.1).
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