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Forced prepurging
on error
Max speed
Hall sensor pulses/rev
Ion curr level
extran light
Ion curr level flame
exting
524/617
Building Technologies Division
Line no.
Operating line
9615
Forced prepurging on error
Off
On
After a reset following lockout, after power ON, or after 24 hours in Standby mode,
forced prepurging takes place in the TV phase for 21 seconds or during the Prepurge
time, if the Prepurge time exceeds 21 seconds. The deviations identified by Z in the
sequence diagram cause the burner control to effect forced prepurging the next time it
is started up.
Off
Function is deactivated.
On
Function is activated.
Line no.
Operating line
9616
Max speed
Maximum speed that may never be reached.
Line no.
Operating line
9617
Hall sensor pulses/rev
Configuration of Hall pulses per revolution of the fan:
Hall mode 1: 1 pulse per revolution
Hall mode 2: 2 pulses per revolution
Hall mode 3: 3 pulses per revolution
Hall mode 4: 4 pulses per revolution
Hall mode 5: 5 pulses per revolution
Hall mode 6: 6 pulses per revolution
Warning!
When selecting a suitable fan, note the maximum input frequency of the fan Hall
input at the LMS14... (refer to chapter Fan PWM/Hall connection facility).
If the maximum input frequency is exceeded, fan speed measurements will be
wrong.
Line no.
Operating line
9618
Ion curr level extran light
Ionization current level extraneous light. If the threshold is exceeded in phases TLO
through TVZ, there will be a response from the sequence of phases (refer to Sequence
diagrams).
Line no.
Operating line
9619
Ion curr level flame exting
Ionization current level Flame extinguished. If the ionization current drops below this
level, there will be a response from the sequence of phases in phases Interval (TI) and
Normal operation (MOD) due to error (refer to Sequence diagrams).
Note!
If Ion curr level flame exting (9619) is set to a lower value than Ion curr level extran
light (9618), error code 152 Parameterization error is displayed together with
diagnostic code: 840 Parameter error, flame threshold too low. The LMS14 responds
by applying the start prevention function.
User Manual LMS14...
6 The settings in detail
CC1U7471en
28.01.2015
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