Riello 20155654, Installation, Use And Maintenance Instructions

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20155699 50 GB
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8.1 Firing-rate controller module LCM100
The LCM100 adds the function of a firing rate controller to the
BurnerTronic. Additional components of the module are:
–
an integrated power supply for external 24 V consumers
(sensors, additional BurnerTronic expansion modules)
– a LSB interface for connecting additional LSB devices
– a 4 ... 20 mA monitor output, for internal firing rate
– digital pulse counter inputs for calculating fuel consumption
– a PT100/1000 input for measuring flue gas temperature
– socket for connection of BT300 service software
The firing rate controller offers the option of controlling tempera-
ture (PT100 or PT1000) or steam pressure (4 ... 20 mA pressure
sensor). The LCM100 also offers the option of a set-point shift de-
pending on outside temperature (control by tmospheric condi-
tion). If the control by atmospheric condition function is not in use,
2 programmed set-points can be controlled using of a digital 24 V
input.
LCM100 insulates the LSB from BT300’s mains potential.
You can set the configuration of connected flame-sensors with
DIP switches.
The burner firing-rate controller function can be disabled, if re-
quired. In that case the regular firing rate input can be controlled
either by a 4 ... 20 mA, 0 ... 10 V or a three-point step (TPS) input.
NOTE:
for a precise adjustment, please consider parameters 43 -
60. For more information regarding these parameters,
please refer to document ’Commissioning Supplement Pa-
rameter List’ (DLT1204).
While using a manual regular firing rate input, you must ac-
tivate the firing rate controller (set P 40 to value 1 or 2).
8.1.1 Range Limits
You must set limit values in the parameters, switching the burner
on and off. After a burner shut-down while actual temperature has
not reached the switch-on threshold yet, a display will inform you
that firing rate controller is refusing a start-up.
8.1.2 Enter set-point of firing-rate controller
8 Options
Fig. 88
S9576
Fig. 89
S9577
Use the arrow keys to select
switching point (ON or OFF)
and to set switch-ing point af-
terwards.
If you confirm settings with
ENTER in a pre-set time slot,
the value is stored in the pa-
rameter. Otherwise the
changes value is discarded