KROHNE OPTISONIC 3400 EN - Manual (Page 88)

6
OPERATION
88
OPTISONIC 3400
www.krohne.com 11/2013 - 4002037702 - HB OPTISONIC 3400 -en-R02
S S Electr: IO
Connection
IO A Connection Current output A cannot
provide the necessary
current. The current
provided is too low. The
current at Input A is below
0.5 mA or above 23 mA.
Check connection at A.
Measure resistance of
current loop at A.
Check current at A.
IO A Connection Open circuit or short circuit
at IO A.
IO B Connection Current output B cannot
provide the necessary
current. The current
provided is too low. The
current at Input B is below
0.5 mA or above 23 mA.
Check connection at B.
Measure resistance of
current loop at B.
Check current at B.
IO B Connection Open circuit or short circuit
at IO B.
IO C Open Connector Current output C cannot
provide the necessary
current.
The current provided is too
low.
Check connection at C.
Measure resistance of
current loop at C.
S S S S S Proc: Empty
pipe
Empty pipe All relevant paths have lost
their signal. The most
obvious reason is the
absence of liquid in the
sensor.
Fill the sensor with liquid to
return to normal operation.
S S Proc: Signal
lost
Signal lost path 1 No signal present in path 1
(2,3) of the sensor.
Remove the dampening or
blockage in path 1 (2,3) in
the sensor
Signal lost path 2
Signal lost path 3
S S Proc: Signal
unreliable
Path 1 unreliable The sensor signals do not
reach the expected
amplitude. This can
influence the measuring
accuracy.
Check the acoustic
properties of the medium.
Particles, air bubbles or
inhomogeneity, may cause
an instable signal. Check
gain and SNR in this path
Path 2 unreliable
Path 3 unreliable
Time of flight unreliable
S S Config:
Totaliser
Tot 1 FB2 Overflow Totaliser has overflowed and
started again at zero
Check totaliser format.
Tot 2 FB3 Overflow
Tot 3 FB4 Overflow
Tot 1 Overflow
Tot 2 Overflow
Tot 3 Overflow
I S Proc: System
Control