KROHNE IFC 110 Converter - Manual (Page 70)

Sect. 7.5 Part C Special applications, functional checks, service, and order numbers
70 IFC 110 F 05/2003
7.5 Faults and symptoms during start-up and flow measurement
• Most faults and symptoms occurring with the flowmeters can be eliminated by following the
instructions indicated in the following tables.
• For greater clarity, faults and symptoms in the tables are divided into different groups.
• LED light-emitting diodes on the front panel (status messages)
D display
I current output I
P pulse outputs P and A1
S status outputs D1, D2, A1 and A2
C control inputs C1 and C2
Before contacting the KROHNE Service Department,
please read the instructions in the table. THANK YOU.
Group LED Display Cause Remedial action
LED 1 Both LEDs flash A/D converter range Reduce flow rate;
exceeded if unsuccessful, test as
described in Section 7.6
Measuring tube drained,- Fill measuring tube
A/D conv. range exceeded
LED 2 Red LED flashes Fatal error, hardware and/or Replace signal converter,
software fault see Section 8.3
LED 3 Cyclic flashing of red Hardware fault, watchdog Replace signal converter,
LED, approx. 1 sec. trips see Section 8.3
LED 4 Red LED on Hardware fault Replace signal converter,
continuously see Section 8.3