Problem
Possible cause
Remedy
Equipment needed, spare parts
No temperature output
signal
– Instrument does not have 2nd
current output
Refer to nameplate for variant;
change LSCH-x1 module if nec.
LSCH-x2 module,
s. chapters 8.4.4 and 8.5.4
– Instrument with Profibus PA
PA instr. has no current output!
Chemoclean function
not available
– No relay module (LSR1-x) or only
LSR1-2 installed or Chemoclean
release code not entered
(handling like S package, see
next line)
Install LSR1-4 module.
Chemoclean is enabled via release
code supplied by E+H with
Chemoclean upgrade
⇒
enter
code
LSR1-4 module,
see chapters 8.4.4 and 8.5.4
S package functions not
available
– S package not enabled (enable
with code that depends on serial
number and is received from
E+H with order of S package)
– S package upgrade:
code received from E+H
⇒
enter
– Following replacement of
defective LSCH/LSCP module:
first enter instrument serial
number (s. nameplate) manually,
then enter code
Detailed description see chpt. 8.5.5
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 chpt. 6,
“Interfaces”
– HART interface missing
– Instrument not registered with
HART server
– Load too low (load > 230
Ω
required)
– HART receiver (e.g. FXA 191) not
connected via load
– Incorrect device address
(addr. = 0 for single operation,
addr. > 0 for multi-drop operation)
– Line capacitance too high
– Line interference
No Profibus PA
communication
– No central PA module
Verify by looking at nameplate:
Profibus PA = -xxx3xx
Upgrade to LSCP module
– Wrong SW version (without PA)
For further information see chpt. 6,
“Interfaces”
– Commuwin (CW) II:
CW II version and instrument
SW version incompatible
– No or wrong DD/DLL
– Incorrect baud rate setting for
segment coupler in DPV-1 server
– Incorrect station (master)
address or duplicate address
– Incorrect station (slave) address
– Bus line not terminated
– Line problems (too long, cross
section too small;
not shielded, screen not
grounded, wires not twisted)
– Bus voltage too low (bus supply
voltage typ. 24 V DC for non-Ex,
13.5 V DC for Ex)
Voltage at instrument PA
connector must be at least 9 V.
LM253E07.CHP
Liquisys M CLM 223 / 253
Maintenance and troubleshooting
Hauser
55