RM-300 Reclaimer Mixer Machine Systems Caterpillar

Illustration 1	g01528353
Left side of instrument panel (1) Electronic display group (2) Display panel (3) Alert indicators (4) Decrease key (5) Increase key (6) Enter key (7) Escape key (8) Radio buttons

Electronic display group (1) is located on the left side of the instrument panel.

Display panel (2) provides machine information and fault information to the operator.

Alert indicators (3) inform the operator of machine conditions. The alert indicators include warning indicators and status indicators.

Decrease key (4) allows the operator to navigate through the different modes of operation. This key also allows the operator to change values while the system is in the calibration mode.

Increase key (5) allows the operator to navigate through the different modes of operation. This key also allows the operator to change values while the system is in the calibration mode.

Enter key (6) allows the operator to navigate through the different modes of operation. This key also allows the operator to save changes that were made during calibration procedures.

Escape key (7) allows the operator to navigate through the different modes of operation. This key also allows the operator to abort calibration procedures without making changes.

The electronic display group is equipped with four radio buttons (8). A radio button allows the operator to bookmark a screen. The operator must hold the radio button for three seconds in order to bookmark a screen. After a radio button has been programmed to a screen, quick actuation of the button causes the system to return to the bookmarked screen.

The electronic display group (1) performs a self-diagnostic test when the engine start switch is moved to the ON position and the unit receives power. The test requires approximately three seconds in order to complete. The operator should not start the machine before the self-diagnostic test is complete. However, the operator is not prevented from starting the machine before the self-diagnostic test is complete. Interruption of the self-diagnostic test can cause communication errors between the control units on the machine.

Illustration 2	g01528365
Display panel (9) Text field (10) Numeric field (11) Emulsion icons (12) Water icons (13) Units field

Text field (9) is a single line with six characters. Each character has 16 segments. The monitoring system displays messages in the text field.

Numeric field (10) is a single line with five, seven segment characters and a single, two segment character on the left side. A decimal point is located to the left of the last two characters on the right side of the field. The numeric field limits negative numbers to a maximum of four digits.

Emulsion icons (11) include the following group of icons:

• The emulsion clean out mode icon has a box with an arrow. This icon is illuminated when the system is in the clean out mode.

• The recirculate icon is a circle enclosed with arrows. When this icon is illuminated, the system is in the recirculate mode.

• The emulsion system icon contains an emulsion symbol and a spray symbol. When the emulsion system is on, the emulsion system icon is illuminated.

• The auto mode icon is the word "AUTO". This icon is illuminated when the emulsion system is in the automatic mode.

• The manual mode icon is a hand symbol. This icon is illuminated when the system is in the manual mode.

• The fault icon is an exclamation point. This icon illuminates when the monitoring system detects a fault in the emulsion system.

Water icons (12) include the following group of icons:

• The water clean out mode icon has a box with an arrow. This function is not used for water spray applications.

• The recirculate icon is a configuration of arrows around a circle. This function is not used for water spray applications.

• The water system icon contains a water symbol and a spray symbol. When the water system is on, the water system icon is illuminated.

• The auto mode icon is the word "AUTO". This icon is illuminated when the water system is in the automatic mode.

• The manual mode icon is a hand symbol. This icon is illuminated when the system is in the manual mode.

• The fault icon is an exclamation point. This icon illuminates when the monitoring system detects a fault in the water system.

Units field (13) assigns units to the number that is displayed in the numeric field. The parameter being displayed and the chosen units of measure determine which units are illuminated.

Illustration 3	g01528396
Left side of instrument panel (14) Water system fault indicator (15) Water system indicator (16) Emulsion system fault indicator (17) Emulsion system indicator

Water system fault indicator (14) illuminates when the water system contains a fault.

Water system indicator (15) illuminates when the water system is operating.

Emulsion system fault indicator (16) illuminates when the emulsion system contains a fault.

Emulsion system indicator (17) illuminates when the emulsion system is operating.

Illustration 4	g01528397
Under instrument panel (1) Electronic display group (18) Twenty four pin connector (19) Forty-pin connector (20) CAN resistor

The electronic display group (1) is mounted to the instrument panel. The electronic display group has a 24-pin connector (18) and a 40-pin connector (19). The instrument panel must removed in order to access the connectors.

The electronic control system is equipped with two CAN resistors. One CAN resistor (20) is located near the electronic display group (1). The second CAN resistor is located in the engine compartment.

Differences in materials along the CAN bus can cause data pulses in the bus to reflect back through the bus. This reflection, also known as "jitter", creates unwanted noise in the CAN bus. Jitter in the communication lines between computers can distort the original data signals. The distortion can result in data loss.

Data in the CAN bus can also be contaminated with radio frequency interference (RFI). This interference can be caused by a number of devices which operate on or near the machine. RFI creates noise in the communication lines which can also distort the original data signals and cause data loss.

In order to prevent data loss in the communication lines, a termination resistor is required at each end of the CAN bus. The CAN resistors act as termination resistors. The CAN resistors absorb unwanted noise in the communication system which can result in abnormal machine operation.

Illustration 5	g01528398
Electronic display group terminals

The electronic display group receives power from circuit breaker "CB13" at terminal "10" of the 40-pin connector. The unit is grounded at terminal 9 of the 40-pin connector.

The electronic display group monitors input signals at the following terminals of the 24-pin connector:

• Terminal "15" receives a digital input signal from the emulsion spray switch when the switch is in the ON position.

• Terminal "16" receives a digital input signal from the spray bar switch when the switch is in the ON position.

• Terminal "20" receives a digital input signal from the water spray switch when the switch is in the ON position.

The electronic display group shows information about the switch positions on the display panel. The display control unit also sends information about the input signals to the machine ECM through the CAN lines at terminal "19" and terminal "30" of the 40-pin connector.

Illustration 6	g01528399
Front of operator platform (21) Machine ECM (22) Water control module (23) Emulsion control module (24) Connector "A" (25) Connector "B" (26) Connector (water control module) (27) Connector (emulsion control module)

The machine ECM (21), the water control module ( (22), if equipped), and the emulsion control module ( (23), if equipped) are located on the front wall of the electrical compartment, at the front of the operators platform. The compartment cover provides access to these components.

The machine ECM (21), the water control module ( (22), if equipped), and the emulsion control module ( (23), if equipped) receive input signals from components around the machine which monitor current machine operating conditions. These components communicate through CAN lines. System software compares the gathered input to information stored in the ECMs memory. The software evaluates the current conditions and generates output signals in order to control the additive systems within set parameters.

The machine ECM (21) has the following two 24-pin connectors: connector "A" (24) and connector "B" (25). The connector (26) for the water control module has 18 pins. The connector (27) for the emulsion control module has 18 pins.

The machine control system is programmed with self-diagnostic logic. Service information can be accessed through the electronic display group or through an electronic service tool. The following components have four light emitting diodes (LEDs): face of the machine ECM (21), face of the water control module (22) and face of the emulsion control module (23). The four light emitting diodes (LEDs) are the following: power, system, mode and status.

The green power LED indicates that the power supply from the battery to the unit is within designated parameters.

The green system LED indicates that the power supply to the microprocessor inside the unit is within designated parameters.

The yellow mode LED indicates software status. When this LED is flashing with a frequency of 1.0 Hz, the software application is running. A 2 Hz flash indicates a problem with the system software.

The red status indicator flashes if an error is detected in the system. Error codes are shown on the digital display.

Illustration 7	g01528400
Machine ECM terminals

The machine ECM (21) receives power at terminals "A1" and "A18". The ECM is grounded at terminals "A6" and "A23". The machine ECM provides a common sensor ground at terminal "B22". The machine ECM communicates with the other control units on the machine through the CAN lines at terminal "B7" and terminal "B8".

In order to control the additive systems, the machine ECM (21) uses input signals it receives through the CAN lines along with input signals it receives from components terminals.

Terminal "B2" receives a pulse width modulated signal from the machine speed sensor. The machine ECM analyzes this input signal along with the input signal from the flow transmitter in the emulsion spray system and/or the input signal from the magnetic pickup in the water spray system. The machine ECM uses these input signals in order to match the flow rate to the machine speed when the additive system is operating in the "AUTOMATIC" mode. Machine speed must be greater than 1.5 m/min (5 ft/min) in order for either additive system to operate when the system is in the "AUTOMATIC" mode.

Terminal "B23" receives an input signal from the forward switch. The machine ECM uses this input signal in order to determine when the propulsion lever is in the "FORWARD" range. The machine must be moving in the forward direction for either additive system to operate while the system is in the "AUTOMATIC" mode.

Terminal "B24" receives an input signal from the reverse switch. The machine ECM uses this input signal in order to determine when the propulsion lever is in the "REVERSE" range. Neither additive system will not operate in the "AUTOMATIC" mode while the propulsion lever is in the "REVERSE" range.

Illustration 8	g01528401
Emulsion control module terminals

The emulsion control module (23) has an 18-pin connector. Terminal "A1" of this module receives power from circuit breaker "CB17". The emulsion control module is grounded at terminal "A3". This control module communicates with the machine ECM (21) through the CAN lines at terminal "F1", terminal "F2", and terminal "F3".

When the machine ECM (21) determines that the spray bar should be open, the ECM prompts the emulsion control module (39) to generate a digital output signal from terminal "E3". This signal is sent to the spray bar solenoid.

When the machine ECM (21) determines that the emulsion spray system should be operating, the ECM prompts terminal "B1" of the emulsion control module (39) to direct an output signal to the forward EDC on the emulsion pump. Initially, the strength of the signal is proportional to the desired flow rate.

Terminal "E2" of the emulsion control module "23" reads the ground signals from the flow transmitter. The emulsion control module transfers the input signal from the flow transmitter to the machine ECM (21). The machine ECM uses this input signal in order to determine if the actual flow rate matches the desired flow rate. If the actual and desired flow rates do not match, the machine ECM adjusts the output signal to the EDC on the emulsion hydraulic pump in order to align the actual and desired flow rates.

When the machine ECM (21) determines that the system is in the cleanout mode, the ECM prompts terminal "B2" of the emulsion control module "23" to generate an output signal. This signal is sent to the reverse EDC on the emulsion hydraulic pump. The strength of this signal is set within the ECM software.

Illustration 9	g01528402

The water control module (22) has an 18-pin connector. Terminal "A1" of this module receives power from circuit breaker "CB17". The water control module is grounded at terminal "A3". This control module communicates with the machine ECM (21) through the CAN lines at terminal "F1", terminal "F2" and terminal "F3".

When the machine ECM (21) determines that the water spray solenoid should be open, the ECM prompts the water control module (22) to generate a digital output signal from terminal "E3". This signal is sent to the water spray solenoid.

When the machine ECM (21) determines that the water spray system should be operating, the ECM prompts terminal "B1" of the water control module (22) to direct an output signal to the forward EDC on the water system hydraulic pump. Initially, the strength of the signal is proportional to the desired flow rate.

Terminal "E2" of the water control module (22) reads the ground signals from the magnetic pickup. The water control module transfers the input signal from the magnetic pickup to the machine ECM (21). The machine ECM uses this input signal in order to determine if the actual flow rate matches the desired flow rate. If the actual and desired flow rates do not match, the machine ECM adjusts the output signal to the EDC on the water system hydraulic pump in order to align the actual and desired flow rates.

Illustration 10	g01528403
Rear of engine

The electronic control system is equipped with two CAN resistors. One CAN resistor (28) is located in the engine compartment. The second CAN resistor is located near the electronic display group.

The CAN resistors act as termination resistors. The CAN resistors absorb unwanted noise in the communication system which can result in abnormal machine operation.