BRAKESAVER GP 1552673 - Caterpillar

Illustration 1 g03277956
Machine View
The CB44B 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.
Illustration 2 g03277957
Vibratory Control System
(1) Machine ECM number two
(2) Machine ECM number one
(3) Front vibratory speed sensor
(4) Rear vibratory speed sensor
(5) Engine ECM
(6) Display
(7) Keypad
(8) Propel lever
(9) Seat position switch "1"
(10) Seat position switch "2"
(11) Vibratory solenoid "MA"
(12) Vibratory solenoid "MB"
(13) Front vibratory solenoid
(14) Rear vibratory solenoid Machine ECM number one (2) monitors input signals from the following components in order to control the vibratory system:
Machine ECM number two (1)
Engine ECM (5)
Keypad (7)
Propel lever (8)
Seat position switch "1" (9)
Seat position switch "2" (10)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 (2) through the CAN lines. The machine ECM number one uses this input in the closed loop control logic.Engine ECM (5) sends engine speed information to machine ECM number one (2) 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 inside a specific range. Keypad (7) contains several control switches in the vibratory system. The keypad communicates with machine ECM number one (2) through the CAN lines.The vibratory enable switch is located on propel lever (8). The propel lever sends input from the vibratory enable switch to machine ECM number one (2) 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 (2) monitors seat position switches (9) and (10) 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 (2) evaluates the input signals and determines if an output should be sent to vibratory solenoids.Machine ECM number one (2) uses display (6) in order to provide information to the operator about the vibratory system during operation. Note: Machine ECM number one (2) also uses the condition of the parking brake and the propel mode in the vibratory control logic. The machine ECM number one will not operate the vibratory system when the parking brake is engaged or if the machine is in the roading