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 %
