Endress+Hauser Liquisys M CLM223/253, Руководство по эксплуатации

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Liquisys M CLM223/253 Diagnostics and troubleshooting
Hauser 77
Incorrect current output
signal
Incorrect current assignment Check current assignment: 0–20 mA or
4–20 mA? Field O311
Total load in current loop excessive
(> 500
 .)
Disconnect output and measure directly
on instrument. mA meter for 0–20 mA DC
EMC (interference coupling) Disconnect both output lines and
measure directly on instrument.
Use shielded lines, ground screens on
both sides, route line in other duct if
necessary.
Current output table not
accepted
Value interval too small Select practical intervals
No temperature output
signal
Instrument does not have 2nd
current output Refer to nameplate for variant; change
LSCH-x1 module if necessary. Module LSCH-x2,
see chapter "Spare parts".
Instrument with PROFIBUS PA PA instrument has no current output!
Chemoclean function not
available
No relay module (LSR1-x) installed
or only LSR1-2 available Install LSR1-4 module.
The Chemoclean is enabled using the
release code supplied by E+H in the
Chemoclean retrofit kit.
Module LSR1-4,
see chapter "Spare parts".
Plus package functions
not available
(Live Check, current curve
2 to 4, alpha value curve
2 to 4, user conc. curve
1 to 4)
Plus package not enabled (enable
with code that depends on serial
number and is received from E+H
with order of extension package)
– When upgrading instrument with
Plus package: code received from E+H
 enter.
– After replacing defective LSCH/LSCP
module: first enter instrument serial
number (s. nameplate) manually,
then enter code.
For a detailed description, see chapter
"Replacement of central module".
No HART communication
No central HART module Verify by looking at nameplate:
HART = -xxx5xx and -xxx6xx
Upgrade to LSCH-H1 / -H2.
No or wrong DD (device description) For further information see BA00208C/
07/EN, “HART® - Field communication
with Liquisys M CxM223/253”.
HART interface missing
Instrument not registered with
HART server
Load too low (load > 230 
required)
HART receiver (e.g. FXA 191) not
connected via load but via power
supply
Incorrect device address (addr. = 0
for single operation, addr. > 0 for
multi-drop operation)
Line capacitance too high
Line interferences
Several devices set to same address Set addresses correctly. Communication not possible with several
devices set to same address.
Error Possible cause Tests and / or remedial measures Equipment, spare parts, personnel