MQ Power WHISPERWATT DCA600SSV4F3 Operation Manual page 27

The definitions below describe the controls and functions
of the paralleling panel (Figure 11).
1. Panel Lights — For operation at night or in dark areas,
the panel lights illuminate the paralleling panel for ease
of viewing.
2. Panel Light Switch — Activates/deactivates the
control panel lights.
3. Voltage Adjust Potentiometer — Used for fine-tuning
the voltage up or down. The adjustment sends a signal
to the controller to offset the system rated voltage (trim
voltage). It is important that all machines are set to the
same value when paralleling.
When first turning on the control power, the controller
will begin its boot sequence much like a computer does.
After completing the boot sequence, the unit will be
ready to run or be placed in Auto mode for auto-start
applications.
4. Control Power Toggle Switch — The control power
toggle switch is a master power switch for the digital
controller. The switch has a latch feature that prevents
powering down of control power while the engine is
running.
5. Emergency Stop Button Switch — The Emergency
Stop pushbutton switch is used to stop the engine
in case of emergency or to lock out operation during
service. The Emergency Stop button should not be
used for routine stopping of the engine.
Actuation of the Emergency Stop button while the
control power is on will illuminate the light on the button
and display 'Emergency Stop' on the controller screen.
Actuating the Emergency Stop button will de-energize
all controller outputs and cause the engine to stop,
as well as trip the circuit breaker. This condition is a
latched condition that must be reset prior to restarting
the engine.
The procedure for resetting the emergency stop
requires several actions. Rotate the Emergency
Stop button to release the spring latch. To clear the
latch, press the Off button to place the controller in
Off mode. While in Off mode, press the Reset button
to clear the E-STOP fault.
DCA600SSV4F3 60 HZ GENERATOR • OPERATION MANUAL — REV. #2 (11/15/22) — PAGE 27
PARALLELING PANEL (OPTION)
For units with manually operated breakers, the breaker
will need to be reset by toggling the handle down,
then turning back to the ON position. On models with
spring-charged breakers, resetting the breaker is not
necessary.
6. Contactor Operation (Manual Mode) — For
manual-run applications, user action is required to
get the generator power to the output bus. Depending
on the model, some utilize contactors in series
with toggle-handle circuit breakers and others have
spring-charged automatic circuit breakers.
On the spring-charged types, the buttons on the
breaker itself are not intended for circuit breaker
operation. For instructional purposes both will be
referred to as 'contactor.'
There are two pushbuttons on the control panel
for controlling the contactor. There is a green
Close Contactor button to close the contactor and
a red Open Contactor button to open the contactor.
These buttons illuminate to show the contactor status.
If the contactor is open, the red Open Contactor button
will be illuminated. If the contactor is closed, the green
Close Contactor button will be illuminated.
These buttons can sometimes be multifunctional
depending on the situation. For stand-alone operation
the buttons simply close and open the contactor as
expected. For paralleling the buttons can act a little
different.
When the bus is already hot from another generator,
pressing the green Online button will initiate a
synchronizing sequence before closing the contactor.
There will be an image of a synchroscope on the
controller display and when the voltage and phases
are matched, the contactor will close.
If there is already load on the bus, the unit will
slowly ramp up load until it is sharing equally with
the other generator(s). While sharing load with other
generator(s), press the red Open Contactor button
once to initiate a ramp-down sequence. The unit will
begin to ramp down and will automatically open its
contactor when at a low level of load. Pressing the red
Open Contactor button twice will immediately open
the contactor.