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Group D
D 1
LINE INT.
D 2
CUR.OUTP. I
D 3
PULS.OUTP. P
D 4
ADC
D 5
FATAL. ERROR
D 6
TOTALIZER
D 7
„STARTUP"
cyclic flashing
D 8
BUSY
D 9
Unsteady display
D 10
No display
Group I
I 1
Receiver instrument
indicates "0".
I 2
Unsteady display
7/3
Display shows . . .
Fault / Symptom
Installation and operating instructions IFC 020
Cause
Power failure.
Note: no counting during
power failure.
Current output overranged.
Pulse output overranged.
Note: totalizer deviation
possible
Analog/digital converter
overranged.
Fatal Error,
all outputs set to "min."
values.
Counts lost
(overflow, data error)
Hardware fault,
Watchdog activated.
Displays for flow,
totalizers and errors disabled.
– Process product
–
conductivity too low,
–
particles/air inclusions
–
too large or inhomogeneous
– Pulsating flow
– Time constant too low or
switched off.
Power OFF.
Check power fuse(s)
F1 (F1 and F2 with DC).
Cause
Incorrect connection/polarity
Receiver instrument or current
output defective.
Current output disabled,
see Fct. 1.05
Short-circuit between current
output and pulse output.
– Process product
–
conductivity too low,
–
particles/air inclusions
–
too large or inhomogeneous
– Pulsating flow
– Time constant too low or
switched off.
Remedial action
Delete error message in
RESET/QUIT. menu. Reset
totalizer(s) if need be.
Check instrument parameters
and correct if necessary.
Error message deleted
automatically after cause
has been eliminated.
Check instrument parameters,
correct if necessary, and reset
totalizer(s). Error message
deleted automatically
after cause has been
eliminated.
Error message deleted
automatically after cause
has been eliminated.
Replace signal converter
(see Sect. 8.4) or contact
Krohne Service, having
first noted down hardware
information and error status,
see Fct. 2.02.
Delete error message in
RESET/QUIT. menu.
Replace signal converter
(see Sect. 8.4) or contact
Krohne Service.
Change setting in
Fct. 1.04.
Increase time constant,
see Fct. 1.02, or switch on.
Switch on power
Replace if defective
(see Sect. 8.2).
Remedial action
Connect properly,
see Sect. 2.4.
Check output (see Sect. 7.2)
with new milliammeter:
Test ok, check connection
cables and receiver instrument,
replace if necessary.
Test faulty, current output
defective. Replace signal
converter (see Sect. 8.4)
or contact Krohne Service
Activate under Fct. 1.05.
Check connection and cables,
see Sect. 2.4. Voltage between
I+ and I⊥ approx. 15 V.
Switch off device, eliminate
short-circuit, and switch
device on again.
Increase time constant,
see Fct. 1.02
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