IFC 110 F V2.0 IFC 110 F-EEx V2.0 - Krohne

Sect. 7.5 Part C Special applications, functional checks, service, and order numbersGroup I Faults / Symptoms Cause Remedial actionI 1Receiver instrumentindicates ”0”Invoke test function 2.03for analysis see Sect.7.4.Display shows...(this check is only usefully, I SHORT Eliminate short circuit,if current output is operating in Current output shorted, Load must be ≥ 15 Ω !active mode, see Sect. 6.8!) Load is < 15 ΩI OPENFind interruption and eliminate.Load resistance > 500 ΩNo information displayedafter testas described for faults I 2 and I 9I 2 Receiver instrument Wrong connection/polarity Connect properly,indicates “0“. see Sect. 2.2 and 2.6.active modeCircuit and/or receiverinstruments defectiveCheck circuit and receiverinstrument at I S / I and replaceif necessary. Check position ofjumper X3 + X6 for active mode,see Sect. 6.8 and check fuse F9on I/O PCB and replace ifnecessary, see Sect. 8.4and 8.7.Receiver instruments and/orexernal voltage sourcedefectiveCheck connections, receiverinstruments and external voltagesource and replace if necessary.passive modeInternal power supply (E+E-)is voltage source, shorted ordefective current outputCheck connections and cables,see Sect. 2.3 and 2.6.Voltage between E+and E-approx. 24 V. If voltage is a lotsmaller, switch off the instrument,eliminate the short circuit,check position of jumperX3 + X6 for passive mode,(see Sect. 6.8) and replacefuses F1 and F8 on the I/O PCBif necessary. Switch theinstrument back on. If it stilldoes not operate, current outputis defective. Replace I/O PCB orcomplete electronic unit,see Sect. 8.3 and/or 8.4.Defective current output Replace I/O PCB (see Sect. 8.4)or consult KROHNE Service,having first noted down hardwareinformation and errorstatus, see Sect. 7.3, Fct. 2.02.Wrong flow direction setting Set properly in Fct. 3.1.Current output switched off Switch on in Fct. 1.5.72 IFC 110 F 05/2003