Burkert Type 8709 - Handbuch (Seite 11)

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Standard assignment of the LEDs:
LED status
Description
Error (red)
lit
Not a serious fault, e.g. Autotune
function not concluded
successfully.
flashing
Serious fault, e.g. sensor break,
defective internal power supply
voltage or too high operating
pressure.
5) not available for analogue version of 8708 / 8718
6) not available for bus version of 8708 / 8718
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inputs/outputs 9.2.2.
Binary inputs
If the binary inputs are activated, different operations can
be run on the LFC / LFM, and the latter can be switched to
a specific operating mode. Activation occurs by connecting
the particular binary input to DGND for at least
0.5 s (for binary inputs).
Standard assignment of the binary inputs:
Input
Configuration
Binary input 1 LFC: Actuate Autotune
LFM: unused
Binary input 2 LFC: Open valve completely
LFM: unused
Binary input 3 7) unused
7) not available for 8718 / 8708
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42
Binary outputs
The LFC / LFM feature binary outputs to indicate operating
states, and limit values which exceed maximum/drop below
minimum or faults.
Standard assignment of the binary outputs:
Output
Configuration
Binary output 1 Limit (y)
Binary output 2 8) Error (for serious fault, e.g. sensor
break or defective internal power
supply)
8) not available for 8718 / 8708
english 43
functions 9.3.
autotune function 9.3.1.
Each LFC has run though the Autotune function
during the final inspection in the factory, at the
operating pressure indicated in the calibration
report and with the calibration fluid.
Therefore, the re-actuation of this function is not
essential for a reliable controlled operation in the
system.
However, the Autotune function should be acti-
vated if
the pressure conditions in the system have •
changed significantly.
the calibration fluid does not correspond with
•
the operating fluid.
english
Type 8708, 8709, 8718, 8719