InteliSys
NT
-AFR-Abstract, SW version 1.0, ©ComAp – December 2006 25
IS-NT-AFR-1.0-Abstract.pdf
Binary outputs
IS-AFR Timer Active output was replaced by standard IS-NT timer function.
MAP ctrl fail
Binary output is closed when MAP characteristic is out of control range. See protection MAP control
fail.
Mixer up
Output for binary Up/Down Mixer control.
Mixer down
Output for binary Up/Down Mixer control.
MA
P a
ctu
al
MAP required
+Mixer BO hyst
MA
P
Binary output Mixer up
on
Binary output Mixer down
on
-Mixer BO hyst
off
off
off
on
Hint:
Binary outputs Mixer up and Mixer down are not active when analog input Mixer feedback is not
configured.
GasVTest run
Output for Gas valve test activation.
kWh pulses
Based on
AFR control
:
kWh pulses
setpoint this output generates 1 sec pulse. kWh value starts
calculating from setpoint change.
Analog inputs
MAT
Analog input for Manifold mixture temperature.
Engine Slow stop (Cool down) is activated when MAT sensor fail is detected.
MAP
Analog input for Manifold mixture pressure – recommended resolution of sensor characteristics is 0,1
Bar. Engine Shut down is activated when MAP sensor fail is detected.
Ana CH4
Gas content influences Mixer position during engine start and running unloaded state when setpoint
AFR control
:
Ana CH4
= ENABLED. In this case the setpoints
StartPosition1
,
RunPosition1
,
StartPosition2
,
RunPosition2
are ignored.
Hint:
StartPosition
.. and
RunPosition
.. setpoints are used when Ana CH4 sensor fail is detected (sensor
value is out of range).
Connect external gas analyzer to analog input Ana CH4 and configure corresponding sensor
characteristics with respect to 0 to 100% Mixer control output range.
Configuration example
