DKG-705 AUTOMATIC MAINS FAILURE AND REMOTE START ...
DKG-705 AUTOMATIC MAINS FAILURE AND REMOTE START ...
DKG-705 AUTOMATIC MAINS FAILURE AND REMOTE START ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
DATAKOM<strong>DKG</strong>-<strong>705</strong> User’s Manual6. SYNCHRONIZING WITH <strong>MAINS</strong>The <strong>DKG</strong>-<strong>705</strong> offers the possibility of synchronizing the genset with the mains.The synchronization comprises frequency, phase and voltage matching features.The synchronization properties of the unit are adjusted with program parameters.These parameters are reserved for factory and qualified installationpersonal use and must not be modified by end users or non-qualifiedservice personal. Otherwise severe damage may occur!6.1 Governor ControlThe frequency and phase matching is made by controlling the engine’s governor module. The<strong>DKG</strong>-<strong>705</strong> compares the mains phase R with the genset phase U. If the engine does not have a speedgovernor it is not possible to make frequency or phase control.The GOV output (terminal 45) is an analog voltage output of 0-10 VDC. The output impedance is180 ohms.The functions of the GOV output are controlled by programmed parameters:P_A02 GOV Control Enable: This parameter enables/disables the activation of the governor controloutput. If governor control is disabled, the output will always stay at the rest level defined by P_A13.P_A03 GOV Reverse Polarity: In normal polarity, the governor control voltage increases in order toincrease the engine speed. If reverse polarity is selected the governor control voltage decreases in order toincrease the engine speed.P_A13 Governor Start: This is the rest value of the governor control output. Always set this value to 128,which is the mid-course, and then adjust the engine speed from the speed governor. However, if needed,engine speed adjustment may be made through this parameter. Do not forget that, if this parameter ismodified, the adjustment range will be reduced.P_A15 Frequency Lock Gain: This parameter defines the reaction speed of the governor output to phasedifferences between genset and mains phases during synchronization. The standard value for thisparameter is 32. But it must be readjusted for the engine during manufacturing. If this parameter is toohigh, a phase oscillation may occur. If it is too low, the phase locking will have a lazy behavior.<strong>705</strong>-UE.doc - 20 -
Change language