Endress+Hauser Liquisys M CLM 223, Руководство по эксплуатации

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Problem Possible cause Tests and / or remedial measures Equipment, spare parts, personnel
Display shows
measured value but
– value does not change
and / or
– instrument cannot be
operated
– Instrument, or module not
properly installed in instrument
CLM 223: Reinstall module
CLM 253: Reinstall display module Refer to assembly drawings in
chapters 8.4.1 and 8.5.1.
– Impermissible operating system
state
Switch instrument off and back on Possible EMC problem: if problem
persists, call E+H Service to have
installation checked.
Instrument gets hot – Incorrect voltage / too high Compare mains voltage and rating
on nameplate
– Power supply unit defective Replace power supply unit Can only be diagnosed by E+H
Service
Incorrect meas. CD /
M
Ω
and / or
temperature value
– Transmitter module defective
(module: MKIC),
please perform tests and take
measures acc. to chapter 7.3
Test measuring inputs:
– connect resistor in place of
conductivity measuring cell,
see table in chpt. 8.8.1
– Connect 100
Ω
resistor
to terminals 11 / 12 + 13
= display 0 °C
If test fails: replace module (using
correct variant), refer to exploded
views in chapters 8.4.1 and 8.5.1.
Current output,
incorrect current – Not calibrated correctly Test with built-in current simulation,
connecting mA meter directly to
current output If simulation value is incorrect:
recalibration at factory or new
LSCxx module required.
If simulation value is correct:
check current loop for load and
shunts.
– Load excessive
– Shunt / short-circuit to frame in
current loop
– Incorrect mode of operation Check whether 0–20 mA or
4–20 mA has been selected
No current output signal – Current output stage defective
(module: LSCH/LSCP)
Test with built-in current simulation,
connecting mA meter directly to
current output If test fails:
Replace central module
(using correct variant)
Additional relays do not
work – CLM 253: ribbon cable
item 320 loose or defective
Make sure ribbon cable is properly
connected, replace cable if nec. S. spare parts for CLM 253
Only 2 additional relays
can be used – Relay module LSR1-2 with 2
relays installed
Convert to LSR1-4 with 4 relays Operator, E+H Service
Enhanced functions (S
package) not available – No or incorrect release code
used
If upgraded: verify that correct
serial number has been used to
order S package Handled by E+H Sales
– Incorrect serial number of
LSCH/LSCP module
Check whether serial number on
nameplate matches serial number
of LSCH/LSCP (field E113) Serial number of LSCH/LSCP
module is required to enable
S package.
Enhanced functions (S
package and / or
Chemoclean) are not
available after
replacement of
LSCH/LSCP module – Serial number entered for
replacement module LSCH or
LSCP at factory is 0000.
S package or Chemoclean has
not been enabled with release
codes.
For LSCH / LSCP with SNR 0000,
an instrument serial number can
be entered
once in fields E114 to
E116.
Next step is to enter release codes
for S package and / or
Chemoclean.
A detailed description can be
found in chapter 8.5.5
No HART or Profibus PA
interface function – Wrong central module HART: LSCH-H1 or -H2
Profibus PA: LSCP module,
s. field E112 Replace central module;
operator or E+H Service
– Wrong software SW version: see fields E1x1
LM253E08.CHP
Liquisys M CLM 223 / 253 Diagnosis and corrective maintenance
Hauser 59