DEEP SEA ELECTRONICS PLC - Home Mega Global Solution

18.3 55X CONTROLLER COMMISSIONING ADJUSTMENTSThe P810 for Windows Software Recalibrate page gives access to a number of adjustableparameters on the Sync and Load control page. These items can be adjusted “live” while theengine is running to set up and finely tune the synchronising process.WARNING: - Until all synchronising adjustments have been satisfactorily completed,ensure the generator contactor/breaker is disabled. You can do this by either disabling thecontrollers contactor/breaker output using the P810 configuration software, or by simplyremoving the connections to the contactor/breaker. Ensure any disconnected wires aresuitably insulated.Synchronising lampsModern electronic techniques ensure the correct operation of the ‘check sync’ and load switchingprocess, but this operation depends upon the correct wiring of the bus and incoming generatorsupplies right through the system. This is the point that most errors are likely to creep in. It is veryimportant that wiring of the supplies is double and triple checked before the system is run for thefirst time.The inbuilt phase sequence / rotation protection goes some way to verify the wiring of the suppliesto the 55x controller. However, it is common practice to employ a secondary ‘sync check’ duringcommissioning to double check the correct connection of the supplies.The diagram to the left shows a busbar andincoming generator supply. The synchronisinglamps can be used as a simple ‘check sync’verification.When the lamps are dim, the supplies are readyfor paralleling.NOTE: - The lamps must be rated to atleast twice the system voltage. In thisexample, the supply voltage is 230V (line-Neutral). The lamps are 230V AC bulbs. Twoare connected in series to allow connectionto the supply. If the incoming generatorsupply is 180° out of phase with the bussupply, the voltage across the lamps wouldbe 460V (2 x 230V).WARNING! Before re-enabling the load switching device double check ALL wiringbetween the alternator output, the 55x controller and the synchronising lamps.Additionally, verify the correct operation of the synchronising process.NOTE: - When using the P120 interface to control the electronic governor controller, itis easy to verify its connections. When the set is running ‘off load’, simply turn the P120sSW1 switch clockwise one position. The engine speed should change slightly. Rememberto return the switch to its previous position before continuing.This procedure can only be applied to the alternator output voltage where the P121 isbeing used in conjunction with the AVR.DSE Guide to Synchronising & Load Sharing PART 1 ISSUE5 18/3/04 AM 57