Right Screed Operator Station
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| Illustration 1 | g01389837 |
For additional information see Specifications, Systems Operation/Testing and Adjusting, KENR5729.
Washdown Indicator and Switch
Washdown indicator (1) and washdown switch (2) are installed on the right screed operator control panel.
Washdown indicator (1) is illuminated when the pump is operating. The washdown indicator receives power from the screed circuit breaker. The indicator is illuminated when it receives a ground signal from terminal "J2-9" of the screed ECM.
Washdown switch (2) is a two-position momentary toggle switch. The switch enables or disables the electric motor of the pump, depending on the current state of the motor. The washdown switch sends a ground signal to terminal "J1-26" of the screed ECM.
Right Horn Switch
Right horn switch (3) controls the horn. The horn switch is a push button, momentary type switch. The switch transfers power from the machine to the horn. The horn switch receives power from contact "4" of the paver harness. When the switch is activated, the switch sends power to contact "1" of the horn.
Crown Switch
Crown switch (4) is located on the right screed operator station. This three-position, momentary type toggle switch controls an electric motor. This motor raises or the motor lowers the center of the screed in order to establish the desired crown. The three switch positions are the INCREASE CROWN position, DECREASE CROWN position, and the HOLD position.
Screed Vibrator Speed Dial
The right screed operator station is equipped with screed vibrator speed dial (5). This dial is connected to a potentiometer. The potentiometer is equipped with three contacts. Two of these contacts are used. Contact "B" of the potentiometer is connected to the load return at terminal "J2-22" of the screed ECM. Contact "C" of the potentiometer is connected to the vibratory signal at terminal "J1-30" of the screed ECM. The machine electronic control system uses the input from this potentiometer to control the speed of the vibratory shaft. Clockwise rotation of the vibrator speed dial increases vibrator speed. Counterclockwise rotation will decrease vibrator speed.
Right Extender Height and Slope Switches
Right extender height switch (6) and right extender slope switch (10) are three-position, momentary type toggle switches. The right extender height switch controls an electric motor which can be used to change the height of the right screed extender. The right extender slope switch controls an electric motor in order to change the slope of the right screed extender.
The top position of both right extender height switch (6) and right extender slope switch (10) is the RAISE position. The bottom position of the switches is the LOWER position, and the center position is the HOLD position. The switches are spring returned to the HOLD position from the RAISE position. And the switches are spring returned to the HOLD position from the LOWER position.
When extender height switch (6) is used, the inboard edge and the outboard edge of the screed extender are moved equally. When extender slope switch (10) is in the RAISE position, the outboard edge of the extender is raised. When the switch is in the LOWER position, the outboard edge of the extender lowers.
Right Material Height Dial
Right material height dial (7) allows the operator to vary the amount of material which is present at the end of the right auger. The dial is connected to a potentiometer. The potentiometer provides an input signal to the screed ECM. The screed ECM transfers this information to the machine ECM through the Cat Data Link.
The machine ECM compares the input from right material height dial (7) to the input from the feeder sensor which monitors the amount of material at the end of the right auger. The machine ECM analyzes the input signals. Then, the machine ECM controls the conveyor and the auger in order to maintain the desired material height. Rotating the material height dial fully counterclockwise will provide the minimum amount of material at the end of the auger. Rotating the material height dial fully clockwise will provide the maximum amount of material at the end of the auger.
Note: The auger system on the right side of the machine must be in the AUTOMATIC mode for right material height dial (7) to have an affect on the height of material at the end of the right auger.
Unused Position
Note: Switch (8) to the right of right material height dial (7) is NOT USED on this screed model.
Right Tow Point Switch
Right tow point switch (9) allows the screed operator to change the height of the tow point. Therefore, the operator can change the angle of attack of the screed. The tow point switch is a three-position, momentary type toggle switch. The top position is the RAISE position that is used to increase mat thickness. The center position is the HOLD position. The bottom position is the LOWER position that is used to decrease mat thickness.
Right Feeder Mode Switch
Right feeder mode switch (11) on the right screed operator panel is one of two feeder mode switches on the screed. The second switch is located at the right extender control box. The feeder mode switches are three-position, momentary type toggle switches. The switch positions are the AUTO position, OVERRIDE position, and the OFF position. The feeder mode switches are spring returned to the AUTO position from the OVERRIDE position. The feeder mode switches are spring returned to the AUTO position from the OFF position.
When either right feeder mode switch is in the OVERRIDE position, the right conveyor and the right auger operate at full speed. When a right feeder mode switch is in the OFF position, the right conveyor and the right auger do not operate, regardless of the position of the right auger and conveyor mode switches on the instrument panel of the tractor.
The feeder mode switches are equipped with three contacts. Contact "1" of right feeder mode switch (11) is connected to terminal "J1-34" of the screed ECM. Contact "2" of both right feeder mode switches is connected to the common return terminal "J2-22" of the screed ECM. Contact "3" of right feeder mode switch (11) is connected to terminal "J1-35" of the screed ECM.
Right Screed Width Switch
Right screed width switch (12) controls the position of the right screed extender. The positions of this momentary type, three-position toggle switch are the following positions: EXTEND position, RETRACT position and HOLD position. The switch is spring returned from the EXTEND position and the RETRACT position to the center HOLD position.
Note: This is one of two right screed width switches that are located on the screed. The second switch is located at the right extender control box. The instrument panel of the tractor is also equipped with a right screed width switch.
Right screed width switch (12) is equipped with three contacts. Contact "1" of right screed width switch (12) is connected to terminal "J2-37" of the screed ECM. Contact "2" of both right feeder mode switches on the screed is connected to the common return terminal "J2-22" of the screed ECM. Contact "3" of right screed width switch (12) is connected to terminal "J2-38" of the screed ECM.
Left Screed Operator Station
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| Illustration 2 | g01389864 |
The left screed operator station is equipped with a set of switches that are similar to the right screed operator station.
The following switches on the left screed operator station operate in the same manner as the switches on the right screed operator station:
- Left tow point switch (13)
- Unused position (14)
- Left horn switch (15)
- Left material height dial (16)
- Left extender height switch (17)
- Left screed width switch (18)
- Left feeder mode switch (19)
- Right extender slope switch (20)
Screed Extender Control Stations
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| Illustration 3 | g01389867 |
The right and left screed extenders are equipped with extender control boxes. The configuration of the extender control boxes is identical.
Both extender control boxes are equipped with tow point switch (21), feeder mode switch (22), and screed width switch (23). With the exception of the interface with the machine electronic control system, these switches operate in the same manner as do the switches at the screed operator stations.