InteliSys
NT
-AFR-Abstract, SW version 1.0, ©ComAp – December 2006 32
IS-NT-AFR-1.0-Abstract.pdf
Diff O2
[ % ]
Allowed ± difference from O2 characteristic.
Step:
0,1 %
Range:
0,0 to 20,0 %
Diff O2 del
[ s ]
Slow stop (cool down) is activated when O2 is out of range for
Diff O2 del
.
Step:
1
s
Range:
0 to 600 s
Mixer MODE
[MANUAL / AUTOMATIC / AUT-PAR ]
MANUAL
Mixer position is defined only by setpoint
Mixer position
in all engine states
.
AUTOMATIC Automatic mixer control that activated after GCB is closed and gen-set load above
Low MAP power
(in island and parallel to mains mode)
.
AUT-PAR
Automatic Mixer control only in parallel to mains (MCB is closed)
Mixer position
[ % ]
Mixer position when Mixer MODE = TEST.
Step:
0,1 %
Range:
0,0 to 100,0 %
Mixer BO hyst
[ % ]
Hysteresis for Mixer binary control via Binary outputs Speed up, Speed down. See chapter
Step:
0,1 %
Range:
0,0 to 100,0 %
AFR gain
[ % ]
Gain for AFR control loop.
Step:
0,1 %
Range:
0,0 to 200,0 %
AFR int
[ % ]
Integration factor for AFR control loop.
Step:
1 %
Range:
0 to 100 %
Rough calculation of speed of Mixer position output change in % per 1 minute
%/min = - (
AFR int
*
Δ
) / 1000
Where:
AFR int
= setpoint 0 to 100%
Δ
= difference in Bar between requested and actual MAP - se table below.
MAP requested MAP actual
Δ
60,0 Bar
50,0 Bar
100
Example: AFR int = 50%;
Δ
= 100; %/min = - 50 * 100 / 1000 = - 5 %/min.
Mixer position output speed does not depend on
AFR gain
setting.
AFR der
[ % ]
Derivation factor for AFR control loop.
Step:
1 %
Range:
0 to 100 %
