Ramp Throttle (Speed Control Switch); Automatic Start And Stop - Generac Power Systems MAGNUM Owner's Manual

Operation
to fall below the ECU minimum or exceed the maximum
RPM.
NOTE: To change the minimum requested RPM and
maximum requested RPM settings, contact Generac
Mobile Products, LLC.

Ramp Throttle (Speed Control Switch)

The standard ramp throttle uses a momentary rocker
switch to adjust the requested engine speed. When first
started, the requested engine speed is Idle RPM.
Pressing and releasing the Rabbit icon increases the
speed requested by 25 RPM. Pressing and holding the
Rabbit icon causes the speed to accelerate to full speed
in a few seconds. Similarly, pressing the Turtle icon
decreases the requested speed.

Automatic START and STOP

The pump can be configured to start
automatically by adding dry-contact
closure float level switches. Verify that
the dry-contact closure float switch
harness is connected to the port on the
back of the control box. Contact the
Generac Mobile Products,
Technical Service Department at 1-800-926-9768 for
more information.
Turning the key switch to AUTO START causes all LEDs
to illuminate.While a self test is performed, the AUTO
STANDBY indicator is illuminated and the startup screen
is displayed. After the startup screen is cleared, the display
shows the transducer reading and switch status on the
Transducer/Switch gauge. All other CANbus values will
show since the ECU is not energized at this time. After one
minute, the display is powered down to reduce battery
drain. The automatic start and stop system is still function-
1 2
RPM
Time
18
001925
LLC
3 4 5
Run
Intermediate
Idle Start Event
Figure 3-2. Throttle Control Profile
ing as indicated by the Auto Standby LED.
For electronically governed units, once the configured
automatic start condition exists, the display powers up, the
panel starts the engine and follows the throttle control
profile configured (see Figure
profile includes various speeds and times for a variety of
scenarios. See Autostart
Single switch mode allows reliable operation with a single
switch. Dual switch operation allows greater hysteresis
when needed.
The transducer input supports simple start and stop oper-
ation by level or pressure and maintenance modes with
speed modification.
•
Programmable high and low set points control start
and stop operation.
•
Level maintenance modes monitor the operating
point and adjust the engine speed to match the tar-
geted set point with configurable aggressiveness.
•
Dual switch inputs can be combined with the trans-
ducer input for redundant safety to protect against
transducer sensor clog or failure.
When the configured stop conditions exist, the panel
reduces the engine speed per the throttle profile and stops
the engine. If the configured start conditions exist before
the shutdown process is complete, the engine will return
to the previous speed until the stop condition exists.
WARNING
Accidental Start-up. Do not configure the control
panel with the key turned to AUTO START. The
equipment could start suddenly, which could result
in death or serious injury.
Configure the control panel with the key in RUN.
6 7
1.
2.
3.
4.
5.
6.
7.
001968
Engine Running Stop Event
Owner's Manual for Dry-Prime Diesel Trash Pumps
3-2). The flexible throttle
Menu.
(000269)
Warm Up Seconds
Ramp Up Seconds
Intermediate Seconds
Ramp To Run Seconds
At Run Speed
Ramp Down Seconds
Cool Down Minutes
Engine Stop