Inputs: Emergency, V-Belt, RWL,, LLOP Switch etc) and internal faults
(Measured Values faults: LLOP, HWT, Fuel, Over Load, voltage and
frequency).
On persistence of any fault for more than the programmed supervision
delay,for that fault, generator is stopped, corresponding fault is announced &
hooter is switched on. On restoration of healthy mains supply, continuously,
for the programme duration the load is transferred to the mains and generator
is stopped after expiry of re-cooling time. In case mains again become
unhealthy during the re-cooling period the load is switched to generator.
After successful stopping of the generator either normally or on fault the Fuel
Pump Contact is removed. In case of fail to stop, the Fuel Pump Contact is
not removed to avoid air locking.
Cyclic Operation: ECON can be programmed to automatically shut down
the engine, for a predefined duration, after a predefined duration of
operation, even if the mains is unhealthy. In case the mains continue to be
unhealthy this cyclic operation will continue till the mains is restored.
• 10.1.2 Semi Auto Mode
Semi Auto Mode is sub set of Auto mode. This mode can be selected by
pulling the pin 28(Semi/Auto) low and selecting auto mode from the front
panel. The Auto LED will blink indicating that the unit is in Semi-Auto Mode.
In this mode the unit does not automatically starts the engine after the mains
has failed and mains supervision timer has expired but waits for an external
start signal pin 29(Remote Start/Stop). Once the start signal is given the unit
now functions like auto mode with 3 crank attempts. The unit can be stopped
by pulling low Pin 29(Remote Stop). Both Remote start and remote stop are
one touch and hence should not be continuously activated. These pins shall
only function during semi auto mode.
• 10.1.3 Manual Mode
ECON-A, in this mode is under the manual control of the operator for starting
and stopping of the generator. Engine has to be started manually by manually
pressing “Start” switch. The “Start” switch shall not operate if GCB contact is
closed, to provide protection to generator. Once the generator is started the
load can be switched to generator by pressing “GCB” switch or to mains by
pressing MCB switch. At any given time, either of GCB or MCB can be
operational. Attempt to switch on GCB while MCB is on will be ignored and
vice versa. Both MCB and GCB key have dual function of either switching
ON or OFF the respective contactor. A press shall toggle the state.
Continuously pressing these keys shall keep toggling the status. To stop the
generator, switch off the GCB contactor and press “STOP” key. Any attempt
to stop the generator, while the GCB contact is engaged, shall be ignored.
While the generator is running ECON-A protects the generator by monitoring
all internal and external faults.
Operating Instructions Page - 8