IFM Electronic PY2068 Bedienungsanleitung Seite 27

Teach zero-point calibration
Automatic adaptation offset (setting range 0 bar ±5%);
e.g. in the event of a deviation of the mounting location of the
sensor and the zero point level for level measurement; see also
parameter COF.
Teach process:
- Make sure that no pressure is applied to the system.
- Press the "Mode/Enter" button until "tCOF" is displayed.
- Press the "Set" button and keep it pressed.
The current offset value (in %) briefly flashes, then the current
system pressure (in the selected display unit) is displayed.
- "Release the "Set" button.
- Press the "Mode/Enter" button briefly (= to confirm the new
offset value).
Teach analogue start point (ASP)
The current system pressure is defined to be the start value for
the analogue signal. ASP = measured value at which 4 mA / 0 V
is provided (20 mA / 10 V if OU2 = InEG / UnEG).
Teach analogue end point (AEP)
The current system pressure is defined to be the end value for
the analogue signal. AEP = measured value at which 20 mA /
10 V is provided (4 mA / 0 V if OU2 = InEG / UnEG).
Teach process:
- Set the requested minimum pressure (for ASP) / maximum
pressure (for AEP) in the system.
- Press the "Mode/Enter" button until "tASP" / "tAEP) is dis-
played.
- Press and keep pressed the "Set" button (currently set value
flashes).
- Release the "Set" button when the display stops flashing
(new set value is displayed).
- Press "Mode/Enter" button briefly.
ASP / AEP can only be taught within defined limits (→ page 28).
If the teaching process is carried out at an invalid pressure, UL
or OL is displayed. After acknowledgement by "Mode/Enter"
Err flashes, the ASP value / AEP value is not changed.
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