Step 4: Automatic Parallel Operation - Smartgen HGM9510N User Manual

10.4 STEP 4: AUTOMATIC PARALLEL OPERATION

When the controller is in auto status, if digital input "remote start on-load (on demand)" is active, it will
carry out automatic parallel, start and stop operation. There are 3 ways of automatic parallel operation:
1) Start on demand: the module with the highest priority starts firstly. When load exceeds the pre-set
start maximum percentage, the second according to the priority module will start the genset.
Synchronize the gensets and make them share load. When load is lower than the preset minimum
stop percentage, after stop delay the second module breaker will be open and the module will be
cooled down and stopped.
2) Start all sets initially: all the modules start at the same time; the first module to reach load
condition closes first; when other modules reach load condition, they synchronize one by one. After
that the modules monitor the load. If load value falls below module pre-set shutdown minimum
percentage, the module with lowest priority enters stop delay and then cools down and stops. If load
exceeds the preset start maximum percentage, the generators that are at rest will all start again.
3) Balanced engine running time: Engine with the lowest total running time B starts first. When the
running genset total running time exceeds the other genset balanced running time B, then the genset
with the next lowest total running time starts (both "start on demand" or "start all sets initially" modes
are possible); after other gensets are connected and synchronized in parallel, breaker open and
unloading are performed automatically. All the gensets are circularly started and stopped according to
their total running time.
HGM9510N/HGM9530N Paralleled Genset Controller User Manual Page 93 of 116