ADC 410F Betriebsanleitung PDF herunterladen (Seite 55)

7/4

Part 1 Converter IFC 090 B (B = basic version), without display

(cont’d) and without HHT or CONFIG operator program

Group I Fault / Symptom Cause Remedial action

I 3 22 mA present at current Fatal Error Replace signal converter

output (fault current) (see Sect. 8.7) or contact

and red LED shows. Krohne Service

I 4 Unsteady display Electrical conductivity of Increase time constant

product too low (see Sect. 6.2) or contact

Krohne Service

I 5 Receiver instruments Control input C set to Change setting

indicate “constant value” “hold outputs” (see Sect. 6.2) or contact

Krohne Service

I 6 “Skipping” elec. Current output set to Change hysteresis or range

current values “automatic range change” of tripping points,

see Sect. 6.2 or contact

Krohne Service

Control input C set to Switch off or check level

“external range change” see Sect. 6.2 or

contact Krohne Service

I 7 F/R flow measurement: Different ranges set for Change setting, see Sect. 6.2

different displays even “forward and reverse flow” or contact Krohne Service

though same volume flow

rate in both directions

I 8 Receiver instruments Control input C set to Change setting,

indicate “min. values” “set outputs to zero” see Sect. 6.2 or contact

Krohne Service

Group P

Fault / Symptom Cause Remedial action

P 1 Connected totalizer not Connection/polarity incorrect Connect properly as described

counting any pulses in Sect. 2.4 + 2.7.

Totalizer or external Check connection cables,

voltage source defective totalizer and external voltage

source, and replace if necessary.

Current output is external Check connection and cables

voltage source; short-circuit, (see Sect. 2.4 + 2.7), voltage

or current/pulse output between I

and I⊥ approx.15 V.

defective. Switch off device. Eliminate

short-circuit and switch device

on again. If no function then

current or pulse output

defective. Replace signal

converter (see Sect. 8.7) or

contact Krohne Service.

Control input C Change setting,

is set to “hold outputs” see Sect. 6.2 or contact

Krohne Service

Pulse output inactive, Switch on, see Sect. 6.2, or

see Fct. 1.06.

Fatal Error, red LED shows. Replace signal converter

(see Sect. 8.7) or contact

Krohne Service.

Output B1 set to Change setting,

status output or see Sect. 6.2 or contact

control input Krohne Service

Control input C is set to Change setting,

“set outputs to zero” see Sect. 6.2 or contact

and currently active Krohne Service

P 2 Unsteady pulse rate Electrical conductivity of Increase time constant, see

product too low. Sect. 6.2 or contact Krohne

Service.

Group LED / I / P

Fault / Symptom Cause Remedial action

LED / I / P 1 Red LED flashes, current output Fatal Error, hardware fault Replace signal converter

indicates fault current and pulse and/or software error (see Sect. 8.7) or contact

output “0”. Krohne Service.

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