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 Binary
outputs.
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 %
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