6
OPERATION
46
H250 M40
www.krohne.com
03/2020 - 4000640706 - MA H250-M40 R06 en
NO ZERO CAL
OF AO
The current output zero
point 4.00mA is not
calibrated. = possible
measuring error in
process control.
S
Perform calibration using ammeter and menu
3.10 or using standard HART
®
tools/process
control system and poss. external ammeter.
Caution: during calibration, switch the measuring
point to manual control.
NO F.SC. CAL
OF AO
The current output 100% =
20.00mA is not calibrated.
= possible measuring
error in process control.
S
Perform calibration using ammeter and menu
item 3.11 or using standard HART
®
tools and
external ammeter if necessary. Caution: during
calibration, switch the measuring point to manual
control.
NO TEMP.
COMPENSATION
The sensor temperature
compensation of the
device is faulty or was not
carried out = possible
measuring error.
S
The device, together with an indication of the
error, must be sent back to the manufacturer for
checking.
WRONG ELEC.REV.
The ER revision of the
ESK4 / ESK4A is not
compatible with the add-
on module, or the ribbon
cable connection is not
connected properly.
S
Check that the ribbon cable fits properly. Check
module compatibility (for details refer to
Software
history
on page 6).
OUTPUT NOT
LINEARIZED
Linearization is not
activated = measuring
error.
S
Activate linearization or carry it out again (HART
®
communication and linearization software are
required; the original calibration values must be
known), or send the device back to the
manufacturer for linearization.
COUNTER LOST
Totalizer value was reset
by error/overflow.
S
1
Because the reset time is not known: Controlled
reset of the counter using menu item 1.6.1 or
using HART
®
tools/process control system.
FRAM WRITE FAULT
Internal communication
error.
F
Check whether the display is plugged in correctly
and restart the device. If the error occurs again:
send the device back to the manufacturer with an
indication of the error.
ROM/FLASH ERROR
Memory error detected
during self-test.
F
Restart device. If the error occurs again: send the
device back to the manufacturer with an
indication of the error.
RESTART OF DEVICE
A device restart has taken
place.
I
The device has been restarted using menu item
1.6.2 since the last time the error messages were
reset.
MULTIDROP MODE
The HART
®
multidrop
mode is activated. The
current output is set to a
fixed value of 4.5 mA.
I
The HART
®
multidrop mode is activated with
selection of a polling address not equal to 0 using
menu item 3.7. Polling address 0 reactivates the
current output.
CRYSTAL OSC FAULT
Internal error in device.
F
The device must be sent back to the manufacturer
with an indication of the error.
REF VOLTAGE FAULT
Internal error in device.
SENSOR A FAULT
Internal error in device.
F
1
SENSOR B FAULT
Internal error in device.
MEMORY
CORRUPTION
Internal memory error,
caused by a hardware or
software problem.
F
Restart the device; if the error occurs again the
device must be sent back to the manufacturer
with an indication of the error.
AO FIXED
Current output is set to a
fixed value.
I
The current output is fixed and does not reflect
the measured value. This is the case in multidrop
mode, with current output test/calibration using
the menu or HART
®
.
AO SATURATED
Current output saturated.
S
The current output is saturated at >20.4 mA and is
no longer linked to the measurement.
Error message
Description
Category
Remedy