IS-NT-Async-SPI, SW Version 1.2, ©ComAp – February 2011
IS-NT-Async-SPI-1.2.PDF
76
RPM/Load ctrl
SpeedRegChar [ POSITIVE / NEGATIVE ]
Switch between speed governor characteristic.
POSITIVE: When the controller Speed governor output voltage increases – engine speed increases.
NEGATIVE: When the controller Speed governor output voltage decreases – engine speed increases.
Hint:
When set to NEGATIVE, Binary outputs Speed Up and Speed Dn still work without inversion.
Dwell time [ s ] (FV)
The period of time that the genset RPM must be within RPM matching limit before GCB is closed.
Step: 0,1 s
Range: 0,0 – 25,0 s
Force value possibility: Yes
RPM matching [°]
Maximum RPM ±difference between gen-set and mains. RPM is compared according to this formula:
RPMreq = fmains * Nominal RPM / Nominal freq
Step: 0,01 %
Range: 0,00 – 2,50%
Force value possibility: Yes
Hint
:
Before optimalization of RPM/Load ctrl setpoint group adjusting disconnect GCB OPEN/CLOSE output or
set RPM matching = 0 to avoid paralleling.
RPM gain [%]
Gain of speed control loop.
Step: 0.1 %
Range: 0 to +200.0 %
RPM int [%]
Relative integration factor of speed control loop.
Step: 1 %
Range: 0 % – 100 %
Speed gov bias [ V ] (FV)
Speed control DC output bias level of SPEED GOVERNOR voltage output.
Step: 0,01 V
Range: SpeedGovLowLim to SpeedGovHiLim V
Force value possibility: Yes
SpdGovPWM rate [ Hz ]
Pulse-Width Modulation rate of the Speed Regulator pulse output.
Step: 1 Hz
Range: 500 – 3000 Hz
Hint:
This adjusting can be used for some Cummins and CAT engines speed governor interfaces. We recommend
to keep the default setting (1200 Hz) for all other speed governor types (coming out through the analog
interface +/- 10V).
To Next Page
Loading...
Need help?
General
