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| Illustration 1 | g03316538 |
Machine View | |
The CD44B with the split drum is equipped with a dual amplitude, dual frequency vibratory system. This system can create vibratory frequencies of 2520 vibrations per minute and 3200 vibrations per minute.
The vibratory system is hydrostatically driven. The drive system is electronically controlled with closed loop logic. The hydrostatic drive system rotates eccentric weights inside a housing. The housing and the weights are referred to as the vibratory pod. Each drum is equipped with a vibratory pod.
The frequency of vibratory systems is controlled by the speed of the eccentric weight shafts. The amplitude of the vibratory system is controlled by the rotational direction of the eccentric weight shafts.
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| Illustration 2 | g03316540 |
Vibratory Control System (1) Machine ECM number " two" (2) Display (3) Front vibratory speed sensor (4) Rear vibratory speed sensor (5) Keypad (6) Propel lever (7) Seat position switch "1" (8) Seat position switch "2" (9) Rear vibratory solenoid (10) Front vibratory solenoid (11) Vibratory solenoid "MB" (12) Vibratory solenoid "MA" (13) Machine ECM number "one" (14) Engine ECM | |
Machine ECM number "one" (13) monitors input signals from the following components in order to control the vibratory system:
- Machine ECM number two (1)
- Keypad (5)
- Propel lever (6)
- Seat position switch "1" (7)
- Seat position switch "2" (8)
- Engine ECM (14)
Machine ECM number "two" (1) monitors input signals from front vibratory speed sensor (3) and rear vibratory speed sensor (4). The machine ECM number "two" sends this input information to machine ECM number "one" (13) through the CAN lines. The machine ECM number "one" uses this input in the closed loop control logic.
Engine ECM (14) sends engine speed information to machine ECM number "one" (13) through the CAN lines. The machine ECM number "one" and the engine ECM work in conjunction to make sure that the vibratory system only operates when the engine speed is within a specific range.
Keypad (5) contains several control switches in the vibratory system. The keypad communicates with machine ECM number "one " (13) through the CAN lines.
The vibratory enable switch is located on propel lever (6). The propel lever sends input from the vibratory enable switch to machine ECM number "one" (13) through the CAN lines. The machine ECM number "one" also uses speed and direction input from the propel lever in the control logic for the vibratory system.
Machine ECM number "one" (13) monitors seat position switches (7) and (8) on machines with the optional 360 degree seat. The position of the seat determines which drum is considered to be the front drum and which drum is considered to be the rear drum.
Machine ECM number "one" (13) evaluates the input signals and determines if an output should be sent to vibratory solenoids.
Machine ECM number "one" (13) uses display (2) in order to provide information to the operator about the vibratory system during operation.
Note: Machine ECM number "one" (13) also uses the condition of the parking brake and the propel mode in the vibratory control logic. The machine ECM number "one" does not operate the vibratory system when the parking brake is engaged or if the machine is in the roading mode. Refer to the description of the "Propel System" for additional information about the parking brake and the propel mode.
Machine ECM number "one" (13) disables the vibratory system if any of the following faults are detected:
- CAN faults
- Parking brake faults
- Operator station position faults
- Uncommanded movement faults in the propel system and in the steering system
- Steering wheel position sensor faults
- Steering angle sensor faults
- Steering solenoid faults
- Hydraulic oil temperature faults (level 2 or level 3)
- Eight V sensor supply faults