Siemens LMV5 Series Technical Instructions page 244

Error Diag.
Device Display
Code Code
45 Any # Locked by SLT
Any #
01
02
Programstop
03
46
active
04
05
06
07
No Start Release
47 Any #
for Gas
Any #
2 Flame Signals
48 with 1 Detector
LMV5
Operation
00
Any #
01
49 2 flame signals
02
Any #
50
00..07
Internal Fault
Any # Basic Unit
51
00..07
Section 7
Meaning for the LMV5x System
Fault with Base Unit (LMV5)
Shutdown via safety limit thermostat (SLT) test
Program stop was activated. System has stopped at the
parameterized position
Program stop in phase 24 (driving to prepurge position) active.
Program stop in phase 32 (prepurge) active
Program stop in phase 36 (ignition position) active
Program stop in phase 44 (interval 1) active
Program stop in phase 52 (interval 2) active
Program stop in phase 72 (driving to postpurge position) active
Program stopin phase 76 (postpurge) active
Start release gas = off
System parameterized for 1-detector operation but 2 flame
signals present
Parallel operation with 2 flame detectors
2 flame signals present on external flame safeguard
Parallel operation of external flame safeguard via contact and
internal flame detector evaluation
Parallel operation of external high-temperature safeguard via
contact and internal flame detector evaluation
Fault during key value check
Number of time block in which the fault was detected
Time block overflow
Number of time block in which the fault was detected
Page 36
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Corrective Action
SLT was activated and safety shutdown was triggered
(usually by the safety loop opening)
Deactivate the program stop if no longer required.
Check the configuration of terminal X7-03.2. Deactivate
terminal if not used. See settings section as a guide for
configuration of the terminal.
Check flame detector wiring. If two detector operation
is desired, configure the LMV52 for this type of
operation. See settings section.
See corrective action based on diagnostic code.
When using an external flame safegaurd via terminal
X6-01.3 (HeavyOilDirStart = ext.FlameGd), there must
not be a flame detector connected to the LMV5.
When using a high-temperature safegaurd via terminal
X6-01.3 (HeavyOilDirStart = HTempGuard), only one
flame detector may be connected to the LMV5 for low-
temperature operation.
If fault occurs sporadically, reduce electrical noise.
If fault occurs continuously, replace LMV5.
SCC Inc.