Farc/Otrim Wizard - ProFire PF3100 Product Manual

16.9 FARC/O TRIM WIZARD
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The FARC/O Trim Wizard is used to configure fuel-air ratio curves, define oxygen trimming profiles and specify
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configuration parameters associated with single-burner fuel-air ratio control applications. Users require a L3
password to access the FARC/O
45. Before accessing the FARC/O
assigned in the I/O Expansion
16.9.1 GENERAL TAB
46. Configure FARC settings per design documentation in accordance with the table below:
Setting
FARC Enable
4-20 Aux Out Mode
Low Fire Mode
Minimum Firing
Rate
Light Off Firing Rate
Flat Line Tolerance
Cross Limit Error
Position Error
Position Error
Timeout
Curve A Name
Curve B Name
Selected Curve
47. Press then
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Trim Wizard - all configuration should be done by a FARC expert.
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Trim Wizard, first ensure that all FARC inputs and outputs are created and
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Wizard.
Options
Enabled
Disabled
PID Control
Appliance Firing Rate
On at Process SP
On at Low Fire SP
0 - 70%
0 – 100%
1 – 10%
0 - 15%
0 - 10%
1 – 10 sec
Any
Any
Curve A
Curve B
to advance to the Channels Tab.
Description
Specifies that all FARC inputs, outputs and curves are used by the
system.
* Note that the HFV Output Mode is automatically changed to Forced Draft Fan when
FARC is enabled.
Specifies that all FARC inputs, outputs and curves are ignored by the
system.
Refer to 4-20 Aux Output Mode
setting has multiple configuration options, only the options listed to
the left are available for FARC applications.
Refer to the Low Fire Mode
setting has multiple configuration options, only the options listed to
the left are available for FARC applications.
Specifies the minimum allowable firing rate when in a main state.
Specifies the firing rate at which the controller holds during light off
of the main burner.
Specifies the tolerance applied around flat portions of a FARC curve
where the internal flat line cross limiting algorithm is used.
Specifies the maximum tolerance by which the requested channel
position may differ from its actual position when the channel is
actively being cross limited and a fuel-rich* condition is created.
* Applies to any lagging channel – not just fuel.
Specifies the maximum tolerance by which the requested channel
position and its actual position may differ.
Specifies the time for which a position error must be present before
the system acts.
Specifies the name of FARC Curve A. (e.g., "Summer Profile")
Specifies the name of FARC Curve B. (e.g., "Winter Profile")
Specifies that the system uses FARC Curve A.
Specifies that the system uses FARC Curve A.
PF3100 Product Manual
setting for descriptions. While this
setting for descriptions. While this
DOC-001149 v8.0
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