Endress+Hauser FEC 22 - Commissioning; Reset to factory settings

5 Commissioning
Note!
The instrument is on stand-by after each calibration procedure (see Section 5.2 to 5.4).
A calibration with both uncovered and covered probe is recommended for critical
applications to ensure maximum operational safety (see Section 5.4).
5.1 Reset to factory settings (Reset)
All settings on the instrument are
cancelled with a reset.
All factory settings are again used
(see Table 5.1).
Procedure
• Press both keys simultaneously for 5 s.
• The red LED flashes, the relays are
de-energised (AC version)
or the switching output is blocked
(DC version).
5s
BA160Y51
Fig. 5.1
Resetting to factory values
MAXMIN
OFF
dC
ON
OFF ON
OFF ON
MIN
MAX
MIN
MAX
∆c∆c
∆c∆c
∆c∆c
2pF
<4
pF
4 pF
4-8
pF
32 pF
>32
pF
16 pF
16-32
pF
8 pF
8-16
pF
∆t∆t
∆c∆c
∆t∆t
∆t∆t
0,5 s 1,5 s 20 s12 s6 s
∆t∆t
0,5 s 1,5 s 20 s12 s6 s
1
3
7
7
7
7
7
7
7
7
3
3
3
3
3
3
3
1
1
1
1
1
1
1
1
2
3
4
5
6
7
8
dC < -4 pF
dC > 4 pF
-4 pF < dC < -2 pF
2 pF < dC < 4 pF
-2 pF < dC < +2 pF
Switch position
Symbol
Assigning values
Meaning
Manual switch point adjustment
Switch point optimisation
Switching delay when probe
covered
Switching delay when probe
uncovered
Minimum/maximum fail-safe
Calibration when probe covered
Calibration when probe uncovered
Display: actual switch point
difference ∆C
Service mode
Table 5.1
Table of functions with assigned
values to the LED chain and
factory-set values
Elektronic insert FEC 22 5 Commissioning
Endress+Hauser 31