Troubleshooting; Fault Diagnostics In The Electronic Insert - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Liquicap M FTI51, FTI52
!
!
LEDs for diagnostics
1 2 3 4
(gree (gree (red (gree
n) n) ) n)
On
On
On
On
On On
On
On On
On On
On On On
* Applies only to electronic insert FEI52.
** A connection to the sensor DAT (EEPROM) could not be established.
Endress+Hauser
9

Troubleshooting

9.1

Fault diagnostics in the electronic insert

Note!
In the event of faults during commissioning or operation of the device, you have the ability
to carry out fault diagnostics on the electronic insert. This function is supported by the
electronic inserts FEI51, FEI52, FEI54, FEI55 (see error table 1 and 2 below).
The electronic inserts FEI53, FEI57S and FEI58 signal two types of faults:
• Faults that can be rectified: The red LED flashes.
• Faults that cannot be rectified: The red LED is lit continuously.
For additional information on fault detection and fault elimination, refer to fault table 2
below.
9.1.1 Activating fault diagnostics FEI51, FEI52, FEI54, FEI55
Note!
The diagnostics provide information about the operating status of the device. The results of
the diagnostics are displayed by LEDs 1, 2, 4 and 5. If the diagnostics detect multiple faults,
these are shown according to their priority. A serious fault (e.g. priority 3) is always
displayed before a less serious fault (e.g. priority 5).
To activate the fault diagnostics, proceed as follows:
1. Set the function switch to position 1 (operation).
2. Press the "–" key.
3. "Fault table 1" lists possible causes of faults and information on how to eliminate them.
Error table 1 (FEI51, FEI52, FEI54, FEI55)
5 6 Cause
(gree (yello
n) w)
No fault
Internal fault
On Calibration point(s) are outside the
measuring range
On Calibration points have been accidentally
interchanged
The calibration point is too close to the
measuring range limit
No calibration has yet been carried out
The DC PNP output is overloaded*
The capacitance change from "Probe not
covered" to "Probe covered" is too small
Sensor DAT (EEPROM) data are invalid
Probe is not detected**
On The measured temperature is outside the
permitted temperature range
Remedy
Replace the electronics
Recalibrate
Recalibrate
Reduce the switch point or select a new
installation location
Carry out empty and/or full calibration
Reduce the connected load
Contact Endress+Hauser Service
Carry out download from the electronic
insert
The probe type is not compatible. Use a
Solicap S probe.
Operate the device in the specified
temperature range only
Troubleshooting
Priority
1
2
3
4
5
6
7
8
9
10
67