IGS-NT Combi, SW Version 3.0,   ©ComAp – May 2013                    
IGS-NT-Combi-3.0 Reference Guide.PDF 
 
This output is closed while the Overspeed alarm is present in the alarm list. 
 
Alarm output: Underspeed 
This output is closed while the Underspeed alarm is present in the alarm list. 
 
Alarm output: Start fail 
This output is closed while the Start fail alarm is present in the alarm list. See the 
diagram in the description of the Starter output for information when the start fail 
alarm is indicated. 
 
Alarm output: Sd Stop fail 
This output is closed while the Sd Stop fail alarm is present in the alarm list. This 
alarm appears when the gen-set indicates that it is rotating although it has to be 
stopped. This situation can occur:  
  when the gen-set starts to rotate spontaneously (from the controller point 
of view) or 
  when the gen-set does not stop after the stop command has been issued. 
See the timing diagram in the description of the output Stop Solenoid.  
 
 
Alarm output: ChrgAlternFail 
This output is closed while the ChrgAlternFail alarm is present in the alarm list. 
This alarm appears when the voltage at the controller D+ terminal drops below 
90% of the controller supply voltage for more than 2s. 
NOTE:  
Function of the D+ terminal is selected by the setpoint D+ Function.  
 
 
Alarm output: Pickup fail 
This output is closed while the ChrgAlternFail alarm is present in the alarm list. 
This alarm appears when the engine is running (there is at least one "running 
symptom" active), however zero speed is detected. 
NOTE:  
Pickup fail can be indicated even if the speed is actually measured from the 
generator frequency. 
 
The "running symptoms" are listed in the description of the output Starter.