KROHNE CORIMASS E Series EN - Manual (Page 90)

90
Group Fault / Symptom Cause Remedy
Current output switched
off. Switch on as per Fct.
3.3.1
I2 Wrong display on
connected instrument Current programming
not correct. Correct the programming
as per Fct. 3.3.1 - 3.3.4
I3 Fluctuating display on
connected instrument Time constant too small Increase the time
constant as per Fct. 3.1.3
Group P
P1 Connected totalizer not
counting Connection / polarity not
correct. Check and correct as per
Section 2.3
Totalizer or external
supply voltage faulty. Check output with
totalizer:
Test OK
Check cabling and totalizer.
Check external voltage supply
Test faulty
Pulse output faulty. Replace
converter or call Krohne
Service.
Alarm output is used as
external voltage supply,
a possible electrical
short-circuit or
alarm/pulse output
faulty. Check connections as per
Section 2.3. Voltage between
terminals 5 and 4.2 approx. 24
V. Correct short circuit if
present. If still faulty the
alarm or pulse output is faulty.
Re-place converter or call
Krohne Service.
Pulse output is switched
off Switch on as per Fct. 3.4.1
P2 Fluctuating pulse rate Time constant too small Increase time constant as
per Fct. 3.1.3
P3 Pulse rate too high or
too low Programming of pulse
output incorrect. Correct programming as
per Fct. 3.4.1 - 3.4.4
External induced noise
dueto low quality cable
or unscreened cable. Check cabling and replace
with screened cable.
See Section 2.3
Group A
A1
Alarm output not
functioning Connection / polarity
incorrect. Correct as per Sect. 2.3
Alarm output or external
instrument faulty Program alarm output to
“direction” as per Fct. 3.5.1.
Set flow direction to negative
and check alarm output.
Test OK
Check external instrument and
if necessary replace.
Test faulty
Alarm output faulty. Replace
converter or call Krohne
Service.
Alarm o/p switched off Switch on as per Fct. 3.5.1
A2 Incorrect voltage level
at output terminals
Hi/Lo) Incorrectly programmed
in Fct. 3.5.2 Correct as follows: Hi = 24 V
Lo = 0 V