Owner's manual

7/3
7.4 Faults and symptoms during start-up and process flow measurement
Before contacting Krohne Service, please read through the
following tables. THANK YOU !
• Most faults and symptoms occurring with the compact flowmeters can be eliminated
with the aid of the following tables.
• For greater clarity, faults and symptoms in the tables are divided into 2 parts and
various groups.
• Part 1
Signal converter IFC 010 B (B = basic version), without display
and without HHT or CONFIG user program (see Sect. 6.1)
Groups: LED LED display (status messages)
I Current output
P Pulse output
LED / I / P LED display, current output and pulse output
• Part 2
Signal converter IFC 010 D (D = display version) and
Signal converter IFC 010 B (B = basic version), without display
but with CONFIG user program (see Sect. 6.1)
Groups: D Display
I Current output
P Pulse output
S Status indication output
D / I / P / S LED display, current output,
status output
Part 1 Converter IFC 010 B (B = basic version), without display
and without HHT or CONFIG operator program
Group LED Fault / Symptom Cause Remedial action
LED 1 LED flashes red/green Overranging of A/D converter, Reduce flowrate; if unsuccessful,
current or pulse output test as described in Sect. 7.5.
Measuring tube drained, Fill measuring tube.
A/D converter overranged.
LED 2 LED flashes red Fatal Error, hardware and/or Replace signal converter
software error (see Sect. 8.4) or contact
Krohne Service.
LED 3 cyclic flashing of red LED, Hardware fault, Watchdog Replace signal converter
approx 1 second activated. (see Sect. 8.4) or contact
Krohne Service.
LED 4 LED shows red continuously Hardware fault Replace signal converter
(see Sect. 8.4) or contact
Krohne Service.