Limit Values For The Electrode Deposits; Limit Values For The Electrode Impedance; Recommended Settings For The Trend Logger - ABB ProcessMaster FEP300 Manual Del Usuario

8.3.2

Limit values for the electrode deposits

Electrode deposit monitoring is switched off (factory default). Monitoring can be switched on in
the "Diagnostics / Diagnosis Control / Coating Detector" menu.
Parameter
Coating QE Min Alarm
Coating QE Max Alarm
Recommended settings in the "Diagnostics / Diagnosis Control / Coating Detector" menu
•
•
IMPORTANT (NOTE)
The deposit value QE is the mean value of Startup Fingerprint QE1 and QE2. The value is
determined using the following formula:
QE = (Startup Fingerprint QE1 + Startup Fingerprint QE2) / 2
8.3.3

Limit values for the electrode impedance

Electrode impedance monitoring is switched off (factory default). Monitoring can be switched on
in the "Diagnostics / Diagnosis Control / Cond. Detection" menu.
Parameter
Elec.Imp.Min Alarm
Elec.Imp.Max Alarm
The limit values for parameters "Elec.Imp.Min Alarm" and "Elec.Imp.Max Alarm" depend on
the measuring media conductivity and must be determined on site.
Recommended settings
•
•
IMPORTANT (NOTE)
The average impedance value is the value of Startup Fingerprint "Elec. Imp. E1-GND" and
"Elec. Imp. E2-GND". The value is determined using the following formula:
Average impedance value = (Startup Fingerprint "Elec. Imp. E1-GND" + Startup Fingerprint
"Elec. Imp. E2-GND") / 2
8.3.4

Recommended settings for the Trend Logger

"Diagnostics / Trend" menu
•
CI/FEX300/FEX500-X1
Coating QE Min Alarm = 0.5 x coating value QE
Coating QE Max Alarm = 2.0 x coating value QE
Elec.Imp.Min Alarm = 0.2 x average impedance value
Elec.Imp.Max Alarm = 3.0 x average impedance value
Logtime Interval = 43,200 minutes
Factory setting
0 ohms
100.000 ohms
Factory setting
0 ohms
20.000 ohms
FEX300, FEX500
Extended diagnostic functions
EN - 71