Parameters 4-67
FlexFit – Linkageless Control – Revision 1.0
PREFERRED
UTILITIES MFG CORPORATION
PP
AA
RR
AA
MM
EE
TT
EE
RR
SS
P2.2.3 4-20 raMP rate Sec/100%, aux 2
Menu > Tuning > Aux 2 4-20 Password Level: Technician Restricted? Yes
This determines the time (seconds) the 4-20 mA device requires to make a 100% change in response to a FlexFit 4-20 mA output
change.
Options: 8 to 60 [Default 30]
P2.2.4 4-20 oFF-curVe lockout deadband %, aux 2
Menu > Tuning > Aux 2 4-20 Password Level: Technician Restricted? No
This sets the maximum difference between the 4-20 output and the 4-20 feedback. If the +/- difference between the 4-20 output
and the 4-20 feedback exceeds "4-20 Off-Curve Lockout Deadband %, Aux 2" for more than 3 seconds while ring, an "Aux 2 Not
at Position" Lockout will occur.
Options: 0.2 to 4.8 [Default 1.5]
Note Smaller values of "4-20 Off-Curve Lockout Deadband %, Aux 2" can cause nuisance burner trips; larger values can
cause less accurate Aux 2 control.
Fuel-Air > O2 Analyzer
P2.3.1 oxygen analyzer oPtIon
Menu > Setup > O2 Analyzer > Setup Password Level: Engineer Restricted? Yes
Determines if the O
2
analyzer is enabled
Options: Disabled: O
2
analyzer is not used
Enabled: O
2
analyzer is used
Note "Oxygen Analyzer Option" must be enabled to enable "P2.3.2 O2 Trim Option" or "P2.3.4 Low O2 Lockout Option".
P2.3.2 o2 trIM oPtIon
Menu > Setup > O2 Analyzer > Setup Password Level: Technician Restricted? Yes
Determines if O2 Trim control is used
Options: Disabled: The O
2
trim option is not used
Enabled: The O
2
trim option is used
Error Check "P2.3.1 Oxygen Analyzer Option" and "P2.3.4 Low O2 Lockout Option" must be enabled; otherwise, "O2 Trim Option"
can't be enabled.
P2.3.3 low o2 alarM SP
Menu > Setup > O2 Analyzer > Setup Password Level: Technician Restricted? No
This determines the Low O2 Alarm Setpoint. If the Flue Gas Oxygen is below this parameter (%) for more than 3 seconds, the
common alarm will be triggered.
Options: 0.0 to 20.0 [Default 0.0]
Note If "Low O2 Alarm SP" is set to 0.0 or the Oxygen Analyzer is being calibrated, then the alarm will be disabled until
the condition is corrected.
P2.3.4 low o2 lockout oPtIon
Menu > Setup > O2 Analyzer > Setup Password Level: Engineer Restricted? Yes
Determines if the FlexFit will Lockout during a low O2 condition
Options: Disabled: The FlexFit will not lockout due to low oxygen.
Enabled: If the ue gas oxygen % is less than "P2.3.5 Low O2 Lockout SP" for more than "P2.3.7 Low O2 Lockout
Delay" seconds, the common alarm will be triggered, and the FlexFit will cause a burner Lockout.
Note If "P2.3.3 Low O2 Alarm SP" is set to 0.0, the O
2
analyzer is being calibrated, or an analyzer fault exists, then "Low
O2 Lockout Option" will be disabled until the condition is corrected.
Error Check "P2.3.1 Oxygen Analyzer Option" must be enabled to enable "Low O2 Lockout Option".
P2.3.5 low o2 lockout SP
Menu > Setup > O2 Analyzer > Setup Password Level: Engineer Restricted? Yes
This determines the setpoint for low stack oxygen lockout. If the ue gas oxygen % is less than "Low O2 Lockout SP" for longer
than "P2.3.7 Low O2 Lockout Delay" seconds, the common alarm will be triggered and the FlexFit will cause the burner to lockout.
Options: 0.2 to 5.0 [Default 0.5]
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