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750 Control Panel Operation and Troubleshooting
463-3000-08 revised Sept 16, 2013 7
Throttle Control
The type of throttle operators installed along with the configured values of Minimum Requested RPM, Idle RPM,
Intermediate RPM, Run RPM and Maximum Requested RPM determine throttle operation. The engine speed can
be adjusted above Run RPM and below Idle RPM but the requests can not fall below Minimum Requested RPM or
above Maximum Requested RPM. The ECU determines how the engine responds to the throttle requests and will
not allow the engine speed to fall below the ECU minimum or maximum RPM.
Note: The Minimum Requested RPM and Maximum Requested RPM
can only be configured using the CANplus Configurator.
See Configuration below for more information.
Ramp Throttle
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.
Two-State Throttle
The optional Two-State Throttle uses a two position rocker switch to adjust the requested engine speed. Pressing
the rabbit icon requests the engine to go to Run RPM. Pressing the turtle icon requests the engine to go to
Idle RPM.
Three-State Throttle
The optional Three-State Throttle uses a three position rocker switch to adjust the requested engine speed. Pressing
the rabbit icon requests the engine to go to Run RPM. The intermediate position requests the engine to go to
Intermediate RPM. Pressing the turtle icon requests the engine to go to Idle RPM.
Digital Rotary Throttle
The optional Digital Rotary Throttle uses a rotary switch to simulate the operation of a throttle potentiometer. Like
the Ramp Throttle, when first started the requested engine speed is Idle RPM. Turning the throttle knob clockwise
increases the requested engine speed. Turning the throttle knob counter-clockwise decreases the requested engine
speed.
Note: When used in combination with the Three-State Throttle, the Rotary Throttle can only be used to make
speed adjustments when the switch is in the intermediate position.
The Rotary Throttle can be used to reprogram the Idle, Intermediate and Run RPMs when used in combination with
the Ramp Throttle or Three-State Throttle. After adjusting the engine to the desired speed with the throttle knob,
press and hold the knob and then press and hold the throttle switch position to be changed. After two seconds all
LEDs will flash indicating the current speed has been stored. The knob and switch can now be released.
Automatic Start/Stop Operation
Turning the control system key to the Autostart position causes all LEDs illuminate once, the Auto Standby indicator
is illuminated and the start-up screen is displayed while a self test is performed. After the start-up 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/stop system is still functioning as indicated by the Auto Standby LED.
Once the configured automatic start condition exists, the display powers up, the panel starts the engine and follows
the throttle control profile configured (see diagram). The flexible throttle profile includes various speeds and times for
a variety of scenarios.
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