OPERATING PROCEDURES GRT8120 OPERATOR MANUAL
4-152 Published 3-22-2021, Control # 702-02
The following terms are related to the ECO Mode function:
By default, ECO Mode is set to off from the factory. Once set
to on by the operator, ECO Mode remains on until the
operator sets it to off. The crane software maintains the ECO
Mode setting of on or off regardless of whether the engine is
shut off or if the battery disconnect switch is set to the off
position.
If the crane’s transmission is shifted to forward or reverse, or
if all crane functions are enabled, ECO Mode will stay on, but
the Engine Working Speed setting will decrease and reset to
idle. When this occurs, the operator must again set the
Engine Working Speed using the Increment/Decrement
Switch (refer to Increment/Decrement – Start/Stop Switch,
page 3-8).
Whether ECO Mode is on or off, the operator can always
increase the engine speed above the current engine speed
by using the Foot Throttle Pedal.
NOTE: ECO Mode only operates when operating craning
functions and does not operate when operating the
outriggers.
When ECO Mode is set to OFF, the crane operates in the
following manner:
- Engine will idle at 800 rpm when no craning
functions are enabled.
- Engine speed will increase and idle at 950 rpm
when a craning function is enabled.
- Engine speed will return to 800 rpm when all crane
functions are disabled.
- Foot Throttle Pedal and Increment/Decrement
Switch can be used to set the engine speed
between the system specified minimum and
maximum engine speeds.
When ECO Mode is set to ON and the two time delays have
been specified in the ECO Mode function screen, the crane
operates in the following manner:
- Engine will idle at 800 rpm when no craning
functions are operated.
- Working Engine Speed is set using the
Increment/Decrement Switch.
- Engine speed will automatically increase from idle
to the Working Engine Speed when a craning
function is operated (controller is moved out of
neutral position).
- Engine speed will stay at the Working Engine Speed
while craning functions are operated.
- Engine speed will automatically decrease to the idle
speed of 950 rpm after all craning functions have
stopped (controllers in neutral position) and the time
period that was specified in the Idle Speed 1 Time
Delay Setting (2, Figure 4-160) has past.
- Engine speed will automatically decrease to the idle
speed of 800 rpm after all craning functions are
disabled and the time period that was specified in
the Idle Speed 2 Time Delay Setting (3,
Figure 4-160) has past.
- Engine speed can be increased above current
engine speed using the Foot Throttle Pedal.
Set ECO Mode to ON and specify the two ECO Mode time
delays using the ECO Mode function screen:
1. Press the Screen Toggle Button (1, Figure 4-161) at the
Jog Dial to select the ODM screen control. Using the Jog
Dial (2, Figure 4-161), select one of the time delay
number fields (box around number will turn orange,
Figure 4-160), then press the Jog Dial (2) (number will
turn white with orange background).
- or -
Using the Arrow Buttons (3, Figure 4-161) on the
Navigation Control Pad at the ODM, select one of the
time delay number fields (box around number will turn
orange, Figure 4-160), then press the OK Button (4)
(number will turn white with orange background).
2. Using the Jog Dial or the Up/Down Arrow Buttons, set
the time delay.
3. Press the Jog Dial or OK Button on the Navigation
Control Pad to accept the time delay setting.
4. Repeat steps 1 through 3 until the minutes and seconds
are set for the time delay.
5. Using the Jog Dial or the Arrow Buttons, select the OFF
icon (icon will turn orange), then press the Jog Dial or
the OK Button to set ECO Mode to ON.
Term Definition
ECO Mode OFF
ECO Mode is disabled and will
not control engine speed.
ECO Mode ON
ECO Mode is enabled and will
automatically control (increase
and decrease) engine speed
based on the operator’s inputs.
Engine Working
Speed
Engine speed set by the operator
using the Increment/Decrement
Switch
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