IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
The setpoint adjusts nominal system frequency (choose 50 Hz or 60 Hz).
Setpoint Nom frq offset is used for setting offset to the chosen nominal frequency
(-2 to +2 Hz with step 0.01 Hz). Controller regulates to the Nominal Freq + Nom
frq offset frequency.
The value Nominal Freq + Nom frq offset is used as 100% for generator and
mains/bus frequency protections and as requested value for frequency regulation
(except synchronizing) if the setpoint Freq reg loop is set to ALL THE TIME.
Setpoint: Nom frq offset
The setpoint adjusts offset of nominal system frequency (Nominal Freq) with step
0.01 Hz.
Controller regulates to the Nominal Freq + Nom frq offset frequency.
The value Nominal Freq + Nom frq offset is used as 100% for generator and
mains/bus frequency protections and as requested value for frequency regulation
(except synchronizing) if the setpoint Freq reg loop is set to ALL THE TIME.
Setpoint: Gear Teeth
Number of teeth on the engine’s flywheel for the pick-up sensor. Adjust the
setpoint to Fgen->RPM (0), if the pick-up sensor is not used. Then the engine
speed will be calculated from the generator frequency.
NOTE:
Generator voltage must be higher than 10V effective to measure the speed from
the frequency correctly. If this condition is not fulfiled at low speeds (cranking) it is
reccommended using additional running indication as e.g. D+ signal to prevent
overcranking of the engine. See the binary output Starter for additional
information.
CAUTION!
The starting procedure of gas engine may not work without the pickup. The pickup
must me always used for gas engines.
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