Burkert Type 8045 - Manual (Page 70)

66
Maintenanceandtroubleshooting
9.5.5. resolution of problems without message generation and
device status leD orange
Device
status
leD current
output
Ao1 output Do1
and/or Do2
and/or Do3 message
displayed possible cause recommended action
orange 4-20 mA Switched 1) "PULS.
OVF" The value parametered
for the pulse output is
wrong (generated fre-
quency is > 250 Hz).
→
Increase the value of the
PU parameter (see chap.
“8.6.7”).
orange 4-20 mA Switched 1) "NEG.
FLOW" The measured flow rate
is negative (although the
display shows a positive
flow rate).
→
Check that the reverse fluid
circulation has no conse-
quences on the process.
→
Else, mount the device on
the pipe such as the arrow
on the housing indicates the
flow direction.
orange 4-20 mA Switched 1) "WARN.
LOW" The measured flow rate
is below the authorized
low limit.
This message appears
when the flow rate
is monitored (see
chap. 8.7.5).
→
Check the flow rate in the
pipe and its consequences
on the process.
→
If necessary, clean the flow
sensor then calibrate the flow
zero point.
orange 4-20 mA Switched 1) "WARN.
HIG" The measured flow rate
is above the authorized
high limit.
This message appears
when the flow rate
is monitored (see
chap. 8.7.5).
→
Check the flow rate in the
pipe and its consequences
on the process.
→
If necessary, clean the flow
sensor then calibrate the flow
zero point.
orange 4-20 mA Switched 1) "DISP. OVF" The real flow rate cannot
be displayed (display is
saturated).
Except the display,
the device operates
depending on the earl
flow rate.
→
Adjust the unit or the number
of decimals in the UNIT
parameter of the Parameters
menu so that the display can
show higher values.
orange 4-20 mA Switched 1) "LIN. LOST" The factory calibration is
lost.
The device measures
wrong values.
→
Take contact with the retailer.
orange 4-20 mA Switched 1) "CAL. FAIL" The flow zero point cali-
bration failed.
→
Follow the calibration con-
ditions described in chap.
8.7.2.
1) If the output is configured to switch when a warning message is generated. See chap. 8.6.5.
English
Type 8045