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Part 2 Signal converter IFC 090 D (D = display version) and

(cont’d) Signal converter IFC 090 B (B = basic version), without display

but with HHT or CONFIG operator program (see Sect. 6.2)

Group S Fault / Symptom Cause Remedial action

S 1 No function Incorrect connection/polarity Connect properly,

of status display see Sect. 2.5 + 2.7.

Status display or output

Set status output under Fct. 1.07

defective or external to “F/R INDIC.” (flow direction)

voltage source not and check (see Sect. 7.2)

supplying voltage. with new status display:

est ok, check previous

status display and external

voltage source, and replace

if necessary.

est faulty, status output

defective, replace signal

converter (see Sect. 8.7) or

contact Krohne Service.

Output terminal B1 or B2 Change setting under

not set to “status output” Fct. 3.07

Group D/I/P/S Fault / Symptom Caus Remedial action

D/I/P/S1 Unsteady display and Electrical conductivity Increase time constant under

outputs of product too low, Fct. 1.02.

time constant too low.

D/I/P/S 2 No display and no Power OFF Switch power on.

function of outputs

Check power fuse(s) Replace if defective,

F1 (F1 + F2 for DC). see Sect. 8.1.

Group C Fault / Symptom Cause Remedial action

C 1 No function Connection is incorrect Connect properly,

see Sect. 2.6 + 2.7

Control input C Check connection, cables

or external voltage and external voltage source,

source defective see Sect. 2.6 + 2.7

Output terminal Change setting under

B1 or B2 not set to Fct. 3.07.

“control input”

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ADC 410F Betriebsanleitung Seite 59