UDRF01.04GB
Maintenance manual DRF 400–450
10
8 Control system – 8.2.1.3 Electrical overloading system
8.2.1.3
Electrical overloading system
page
–
Electrical overloading system, function description
1. Sensor boom angle (R771)
2. Sensor boom length (R777)
3. Sensor hydraulic pressure lift cylinder (B768-10, -
11, -12, -13)
This overloading system is a part of the control system and performs
calculations of the load with sensor values for boom length, boom
angle and cylinder pressure in the lift cylinders.
The calculated load and the measured distance from the machine is
compared to a load curve, if the load is outside permitted distance
the overloading system is activated.
•
In case of overloading forward the control system interrupts the
functions lift and lower as well as extension. Using the by-pass,
lower and extension can be activated to get out of the overload-
ing situation.
•
In case of overloading on the steering axle the control system
activates a warning for overloading on the steering axle.
Depending on how big the load is on the steering axle, the ma-
chine's speed is limited. A bar in the event menu shows the
range of the limitation.
NOTE
In case of overloading on the steering axle it is up to the op-
erator to be careful when operating, no functions are inter-
rupted. To reduce the load and regain full operational
speed, the boom shall be lowered or extended.
00058
2
1
3
2
004889
D795
D797-R
D797-F
D793
2
7
6
5
3
4
1
m
<˚
Pa
Pa
D
D
D
D
1.
Sensor hydraulic pressure lift cylinder left (B768-10
and B768-11) as well as Sensor hydraulic pressure lift
cylinder right (B768-12 and B768-13)
5.
Sensor boom angle (R771)
2.
Control unit frame front (D797-F)
6.
Control unit KID (D795)
3.
Sensor boom length (R777)
7.
Control unit transmission (D793)
4.
Control unit frame rear (D797-R)
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