Installation and operating instructions
IFC 020
7/4
Group P
Fault / Symptom
Cause
Remedial action
P 1
Totalizer connected but does
Incorrect connection/polarity
Connect properly,
not count any pulses
see Sect. 2.4.
Totalizer or external voltage
Check output (see Sect. 7.2)
source defective.
with new totalizer:
Test ok, check connection
cables and previous
totalizers and external voltage
source, and replace if
necessary.
Test faulty, pulse output
defective, replace signal
converter (see Sect. 8.4)
or contact Krohne Service.
Current output is external
Check connection and cables,
voltage source, short circuit
see Sect. 2.4. Voltage between
or current / pulse output
I+ and I
⊥
approx. 15 V.
defective
Switch off device, eliminate
short circuit, switch device
on again. If no function,
then current or pulse
output defective. Replace
signal converter (see Sect.
8.4) or contact Krohne
Service.
Pulse output is deactivated,
Switch on under Fct. 1.06.
see Fct. 1.06.
P 2
Unsteady pulse rate
– Process product
Increase or switch on
–
conductivity too low,
time constant, under Fct. 1.02
–
particles/air inclusions
orswitch on if necessary.
–
too large or inhomogeneous
– Pulsating flow
– Time constant too low
–
or switched off
P 3
Pulse rate too high or
Incorrect setting for
Change setting under Fct. 1.06.
too low.
pulse output.
Group S
Fault / Symptom
Cause
Remedial action
S 1
No function
Incorrect connection/polarity
Connect properly,
of status display
see Sect. 2.4.
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:
Test ok, check previous
status display and external
voltage source, and replace
if necessary.
Test faulty, status output
defective, replace signal
converter (see Sect. 8.4) or
contact Krohne Service.
Group D/I/P/S
Fault / Symptom
Cause
Remedial action
D / I / P / S 1
Unsteady display and
– Process product
Increase time constant,
outputs
–
conductivity too low,
under Fct. 1.02
–
particles/air inclusions
–
too large or inhomogeneous
– Pulsating flow
– 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 and F2 for DC).
see Sect. 8.2.