InteliSys
NT
-AFR-Abstract, SW version 1.0, ©ComAp – December 2006 31
IS-NT-AFR-1.0-Abstract.pdf
Ana CH4 [ DISABLED / ENA-FIX / ENA-STEP ]
DISABLED Mixer position for engine start and running unloaded (< Low MAP power) is defined
by setpoint AFR control: StartPosition1 or 2 and RunPosition1 or 2 and Lo Pwr
position 1 or 2.
ENA-FIX Mixer position for engine start, running unloaded (GCB opened) and is defined by
analog input Ana CH4 (via configured characteristic MxPos40%CH4,
MxPos60%CH4).
ENA-STEP Mixer output = ENA-FIX + corresponding difference between active (depends on
Binary input Gas selection) StartPosition, RunPosition and LoPwr position.
… see table below
Ana CH4: Start Run < Lo MAP power > Lo MAP power
DISABLE
StartPosition1
StartPosition2
RunPosition1
RunPosition2
LoPwr postion1
LoPwr postion2
PID control
ENA-FIX The mixer output depends on AnaCH4 input (corresponding
sensor characteristics) and setting of MxPos40%CH4 and
MxPos60%CH4
PID control
ENA-STEP
= ENA-FIX = ENA-FIX + Dif1 = ENA-FIX + Dif2 PID control
Dif1 and Dif2 depends on Binary input Gas selection - see below
Binary input
Gas selection
= opened = closed
Dif1 =
RunPosition1 - StartPosition1 RunPosition2 - StartPosition2
Dif2 =
LoPwr position1 - StartPosition1 LoPwr position2 - StartPosition2
Low MAP power [ kW ]
MAP characteristic specification: gen-set power for Low MAP value and kW power limit for AFR PID
Mixer control loop activation.
Step: 1 kW
Range: 0 to High MAP power
High MAP power [ kW ]
MAP characteristic specification: gen-set power for High MAP value.
Step: 1 kW
Range: Low MAP power to Nominal power
Low MAP [ Bar ]
MAP characteristic specification: MAP value at Low MAP power.
Step: 0,001 Bar
Range: 0,000 to High MAP
High MAP [ Bar ]
MAP characteristic specification: MAP value at High MAP power.
Step: 0,001 Bar
Range: Low MAP to 10,000 Bar
Low O2 [ % ]
Oxygen content at Low MAP power.
Step: 0,1 %
Range: 0,0 to High O2
High O2 [ % ]
Oxygen content at High MAP power.
Step: 0,1 %
Range: Low O2 to 20,0 %
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