To enter the setting module, first move the toggle switch on the control panel to the right. This activates the programming mode. Then press "6" and "ENTER" in order to enter the setting module. The display screen is shown in Illustration 1. To enter a sub-menu, press the number key for the sub-menu and then press "ENTER".
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| Illustration 1 | g00698461 |
Default Setting Diameter Measure
This procedure must be performed if the diameter sensors have never been calibrated. The following procedure sets the values in the default calibration list. For the procedures that are required to adjust the values, refer to "Calibration Diameter Measure".
Note: The following procedure uses plastic tubes to calibrate the diameter sensors. If plastic tubes are not available use a tree. The tree should be straight and the tree should be circular in the cross section. The tree should have a limited number of branches.
- Select five to ten tubes of various diameters. The tubes must be between the maximum diameter and the minimum diameter that is shown in Table 1. Tubes with a diameter over 150 mm (5.9 inch) must vary in diameter by at least 50 mm (2.0 inch). Tubes with a diameter under 150 mm (5.9 inch) must vary in diameter by at least 25 mm (1.0 inch). Measure the diameter and record the diameter of each tube.
Show/hide table
Table 1 Maximum Diameter of Tree for Calibration Harvester Head Maximum Diameter Minimum Diameter HH45
500 mm (19.7 inch)
35 mm (1.4 inch)HH55
650 mm (25.6 inch)
35 mm (1.4 inch)HH65
650 mm (25.6 inch)
35 mm (1.4 inch)HH75
650 mm (25.6 inch)
35 mm (1.4 inch)
- Tilt the harvester head into the VERTICAL position. Fully open the delimbing knives, feed rollers, and holding arm. Lower the harvester head to the ground. Stop the engine.
- Turn the engine start key to the ON position. In the operating mode, press the button on the right control lever in order to open the delimbing knives, feed rollers, and holding arm. Hold in the button until the DASA beeps.
- Chain the frame of the harvester head to the yoke in order to prevent the harvester head from tilting. Remove the valve cover from the harvester head.
Note: The delimbing knives, feed rollers, and holding arm must be fully open before performing Step 5.
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The harvester head frame may tip over when it is in the vertical position. Personal injury or death may result if this occurs. Secure the frame to the yoke with a chain or similar restraint prior to working on the harvester head. |
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- In the programming mode, enter the sub-menu for "Default Setting Diameter Measure". Enter the maximum diameter from Table 1 after "Write Max. Diameter?". Press "ENTER". The display screen will show the following message:
- Place the largest tube in the harvester head. Ensure that the tube is parallel to the harvester head. The top and the bottom of the tube must also be touching the guide rollers on the harvester head.
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| Illustration 2 | g00698469 |
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| Illustration 3 | g00468363 |
Position of Tube for Calibration of Diameter Sensors | |
- Place a wrench on the stud for the delimbing knives. Fully turn the wrench away from the harvester head. With the wrench in this position, manually close the two delimbing knives onto the tube.
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| Illustration 4 | g00691896 |
Stud for Delimbing Knives on a HH45, HH55, and HH65 | |
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| Illustration 5 | g00691898 |
Stud for Delimbing Knives on a HH75 | |
- Press "ENTER". The display screen will show the following message:
- Enter the diameter of the tube. Press "ENTER" in order to accept the value that was entered. The diameter that was entered will be displayed at the top of the screen.
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| Illustration 6 | g00698475 |
- Move the wrench on the valve fully toward the harvester head. Manually open the delimbing knives. Repeat Steps 6 through Steps 10 for the remaining tubes. Use the second largest tube and work toward the smallest tube.
- When all tubes have been calibrated, enter the minimum diameter from Table 1 for the final diameter value. Press "ENTER" in order to accept the value that was entered.
- The calibration is complete. Press "ESC" in order to return to the main menu.
Calibration Diameter Measure
When the diameter sensors are not taking accurate measurements, perform the following procedure. The procedure adjusts the values in the default calibration list. If the diameter sensors have never been calibrated, perform the procedure in "Default Setting Diameter Measure".
Reference: Before the values can be adjusted the inspection procedure must be performed. For more information on the inspection procedure, refer to Operation and Maintenance Manual, "Diameter Sensor - Inspect".
- In the programming mode, access the sub-menu for "Calibration Diameter Measure". The display screen will show the values from the default calibration list. A sample of these values are shown in Illustration 7.
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| Illustration 7 | g00698542 |
- Locate points on the diameter inspection chart that deviate from the "0" line. Press "ENTER". Enter the value from the default calibration list after "SHOWED DIAMETER". Press "ENTER".
Note: For the diameter inspection chart in Illustration 8, you would enter "70".
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| Illustration 8 | g00468453 |
Example of a Diameter Inspection Chart | |
- After "MEASURED DIAMETER", enter the actual diameter. Press "ENTER".
The actual diameter is at the intersection of the drawn line and the horizontal line.
Note: For the diameter inspection chart in Illustration 8, you would enter "71" because the drawn line is 1 mm above the "0" line. If the drawn line had been 1 mm below the "0" line, you would enter "69".
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| Illustration 9 | g00698545 |
- The value in the default calibration list will be updated. Repeat steps 2 and 3 for each of the remaining values in the default calibration list that must be changed. Refer to Table 2 for an example of the values that can be entered.
Show/hide table
Table 2 Diameter Number Showed Diameter Measured Diameter 6 70 71 5 100 101 4 180 178
- The calibration procedure is complete. Press "ESC" in order to return to the main menu.
New calibration points can also be added to the default calibration list from this sub-menu. The new calibration points can be added by meeting the following criteria:
- Calibration points over 150 mm must differ by a minimum of 50 mm.
- Calibration points under 150 mm must differ by a minimum of 25 mm.
To enter a new calibration point, enter the new value after "SHOWED DIAMETER". Enter the value from the diameter calibration chart after "MEASURED DIAMETER".
Calibration Length Measure
When the length sensor is not taking accurate measurements, perform the following procedure. Before the length sensor can be calibrated the inspection procedure must be performed.
Reference: For more information on the inspection procedure, refer to Operation and Maintenance Manual, "Length Sensor - Inspect".
- In the programming mode, access the sub-menu for "Calibration Length Measure". The display screen will show a message that is similar to the message in Illustration 10.
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| Illustration 10 | g00698551 |
- Locate the point of intersection of the drawn line and a horizontal line.
Note: Use the longest log that is available to calibrate the length.
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| Illustration 11 | g00750226 |
- Press "ENTER". Enter the value from the "0" line that corresponds to the point of intersection after "SHOWED DIAMETER". For the above example, you would enter "550". Press "ENTER". The display screen will show the following message.
Note: The minimum value that should be entered in the "SHOWED DIAMETER" is "520".
- After "MEASURED LENGTH", enter the sum of the horizontal line and "0" line. For the above example, you would enter "551" because the line is drawn 1 cm above the "0" line. If the line had been drawn 1 cm below the "0 cm" line you would enter "549". Press "ENTER".
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| Illustration 12 | g00698564 |
- The "Length/Pulse-Relation" will change. Press "Esc" in order to end the calibration procedure.
Note: If 550 is entered for the "SHOWED LENGTH" and 550 is also entered for the "MEASURED LENGTH" the "Length/Pulse Relation" will not change to 100.00%. When the values are entered, the DASA changes the "Length/Pulse Relation" to an amount that is proportional to values that are entered.
Min/Max Setting
The sub-menu for "Min/Max Setting" can be used to set the following functions:
- Feed rates
- Pressure of the holding arms
- Pressure of the feed rollers
- Pressure of delimbing knives
- Control lever
To enter the sub-menu for "Min/Max Setting", press "4" from the setting menu and then press "ENTER". The display screen is shown in Illustration 13. To enter a sub-menu, press the number key for the sub-menu and then press "ENTER".
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| Illustration 13 | g00698569 |
Feed
The feed rate of the harvester head varies while a tree is processed. The DASA allows the feed rollers to gradually slow down before the feed rollers stop or the feed rollers reverse direction.
The DASA can be set to feed the tree past the cutting zone and then reverse feed to the cutting zone. This allows the harvester head to delimb part of the next log. The harvester head will then accelerate to full speed before reaching the limbs on the next log.
Note: A graph of the various feed rates is shown in Illustration 14. In the illustration, the "Start of Down Ramp" has been set to 40 cm in the "Machine Variables". The "Total Ramp" has been set to 60 cm.
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| Illustration 14 | g00449663 |
Graph of Feed Rate (A) Full Speed. (B) High Speed. (C) Low Speed. (AA) Cutting zone. (BB) Pre-delimbing zone. | |
The tree is fed through the harvester head at full speed (A). If the DASA is set for ramping, the feed rollers will slow to high speed (B) before the cutting zone (AA) is reached. The "Start of Down Ramp" is the distance before the cutting zone when the feed rollers slow down.
The feed rollers will then stop the tree at a specified distance past the "Start of Down Ramp". This distance is called the "Total Ramp". The feed rollers will then reverse at low speed (C) until the log is in the cutting zone (AA) .
The DASA also allows the operator to rotate the feed rollers at "Crawl Speed". Crawl speed can be activated by holding down the "STOP" button and pressing the "FEED - FORWARD" button or the "FEED - REVERSE" button.
The high speed, slow speed, and crawl speed can be adjusted by the DASA. It may be difficult to obtain an optimum setting of the speeds on the first attempt. Before making any adjustments, save the current settings on the memory card. Also, verify that the feed rollers are rotating at the same speed. When you are adjusting the speeds, refer to the following explanations:
The high speed should be adjusted so the engine just begins to slow down. If the high speed is set too fast, the feed rollers will not be able to stop at the cutting zone. Also, the distance that is required for braking will be longer than normal. If the speed is too slow, the feed rollers will not advance all the way to the cutting zone.
The low speeds must be fast enough to advance the tree to the cutting zone. If the speed is set too high, the harvester head will oscillate the tree back and forth across the cutting zone.
The crawl speed can be adjusted to the preference of the operator. The crawl speed does not affect the operation of the harvester head during processing.
To change the speeds, perform the following procedure:
- Start the engine. Turn the engine speed dial to operating speed.
- In the programming mode, go into the sub-menu for "Feed". The display screen will show the following message:
- Press the number for the speed that will be adjusted. Press "ENTER". The display screen will show the message that is shown in Illustration 16.
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| Illustration 15 | g00698579 |
- Press "1" and "ENTER" in order to continue with the procedure. Press "ESC" in order to end the procedure.
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| Illustration 16 | g00698582 |
- Use the arrow keys to increase or decrease the value at the bottom of the screen. Press "ENTER" in order to accept the value.
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| Illustration 17 | g00698585 |
- When the setting is complete press "ESC" several times in order to return to the main menu.
Pressure of Delimbing Knives
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Personal injury or death can result from escaping fluid under pressure. Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. Always use a board or cardboard when checking for a leak. |
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The following procedure adjusts the range of pressures that can be reached by the potentiometer for the delimbing knives or the settings in the DASA. The range of pressure is controlled by the variable pressure reducing valve on the harvester head.
The minimum pressure and the maximum pressure should only be adjusted when the available range of pressures is less than 7000 kPa (1015 psi). The sub-menu for "Low Pressure" can be used to adjust the pressure setting for various diameters of trees. The procedure adjusts the electrical current to the solenoid valve.
Before you adjust the minimum pressure or the maximum pressure, perform the following procedure:
- Attach a 0 to 50000 kPa (0 to 7250 psi) pressure gauge to the pressure tap.
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| Illustration 18 | g00698606 |
Pressure Tap Location ( HH65) | |
- Disconnect the two electrical connectors for the grapple functions that are not being tested. The two electrical connectors are located on the main control valve. For example, if the pressure of the delimbing knives is being tested disconnect the electrical connectors for the holding arms and the feed roller arms.
- Start the engine. Adjust the engine speed dial to operating speed.
- In the operating mode, press in the button on the right control lever in order to close the delimbing knives, feed rollers, and holding arm. Hold in the button until diode "4" is green in color. The diode must stay green when the button is released in order to set the pressure.
- In the programming mode, go into the sub-menu for "Limbing Knife Pressure". The display screen is shown in Illustration 19.
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| Illustration 19 | g00698608 |
Min
- Press "1" in order to set the minimum pressure of the delimbing knives. The following message will be displayed:
- Use the arrow keys to increase or decrease the minimum pressure. The pressure will be indicated on the pressure gauge. The minimum pressure should be set 7000 kPa (1015 psi) below the maximum pressure. The pressure can be measured from the pressure tap on the harvester head. Press "ENTER" in order to accept the value.
Note: The minimum pressure is limited by the amount of oil flow through the orifice in the variable pressure reducing valve.
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| Illustration 20 | g00698611 |
- Press "ESC" several times in order to return to the main menu.
Max
- Press "2" in order to set the maximum pressure of the delimbing knives. The following message will be displayed:
- Use the arrow keys in order to increase or decrease the maximum pressure. The pressure will be indicated on the pressure gauge. The maximum pressure is limited by the setting of the pressure limiter valve in the hydraulic control valve.
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| Illustration 21 | g00698614 |
- Press "ESC" several times in order to return to the main menu.
Low Pressure
Press "3" in order to set the pressure range of the delimbing knives. The following message will be displayed:
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| Illustration 22 | g00698626 |
The pressure of delimbing knife can be adjusted for four different ranges of diameter. The following list contains the available ranges of diameter:
- The diameters of the tree are greater than the value that is entered on line 2.
- The diameters of the tree are between the values that are entered on line 2 and line 4.
- The diameters of the tree are between the values that are entered on line 4 and line 6.
- The diameters of the tree are less than the value that is entered on line 6.
The pressures can be entered as a percentage of the available pressure range. If "0" is entered, the pressure setting will be the minimum pressure. If "100" is entered, the pressure setting will be the maximum pressure. If "50" is entered, the pressure setting will be halfway between the minimum pressure and the maximum pressure.
To adjust a value, press the number key for the value and "ENTER". Enter the desired value. Press "ENTER". Press "ESC" several times in order to return to the main menu.
Pressure of Feed Roller
Note: The following procedure adjusts the pressure of the feed rollers on the HH45. The procedure adjusts the pressure of the holding arm on the HH55, HH65, and HH75.
For more information on adjusting the pressure of the feed rollers or the holding arms, refer to the procedure "Pressure of Delimbing Knives".
Grapple Setting
Note: You will not be able to change the setting of the grapple, if you did not select "Monsum" in the "Machine Variables". If the "Grapple Setting" does not appear as an option under the "Min/Max Settings", change the type of lever in the "Machine Variables".
The following procedure calibrates the two buttons on the right control lever. These buttons control the open/close operation of the delimbing knives, the holding arm, and the feed rollers. The procedure must be performed when a new right control lever is installed. The procedure can also be used when the two buttons are not operating correctly.
The procedure calibrates the electrical signals from the two buttons to the DASA. The procedure calibrates the following electrical signals:
- Minimum value for CLOSE
- Maximum value for CLOSE
- Minimum value for OPEN
- Maximum value for OPEN
- In the programming mode, go into the sub-menu for "Grapple Setting" under the sub-menu for "Min/Max Setting". The display screen will show the following message:
- Press in the button (1) on the right control lever until the line on the screen just appears. Refer to Illustration 23. With the left button (1) in this position, press "ENTER". The minimum value for CLOSE is set.
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| Illustration 23 | g00698639 |
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| Illustration 24 | g00698685 |
Right Hand Control (1) Left button. (2) Right button. | |
- Press in button (1) completely. Release button (1) by approximately 2 mm (.08 inch). Press "ENTER". The maximum value for CLOSE is set. Release the button.
- Press in button (2) on the right control lever until the line on the screen just appears. With the button (2) in this position, press "ENTER". The minimum value for OPEN is set.
- Press in button (2) completely. Release button (2) by approximately 2 mm (.08 inch). Press "ENTER". The maximum value for OPEN is set. Release the button.
- The calibration procedure is complete. Press "ESC" several times in order to return to the main menu.
Clock
Press "6" from the "Setting Module" and "ENTER" in order to program the clock.
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| Illustration 25 | g00698646 |
Once the settings are completed, press "ESC" in order to end the function. Press "ESC" again in order to return to the main menu.
Set Time
To set the time, enter two digits for the hours and two digits for the minutes (HHMM). Enter a value for the hours between 0 and 23. Press "ENTER" in order to save the time that was entered.
Set Date
To set the date, enter two digits for the month, the date, and the year (MMDDYY). Press "ENTER" in order to save the date that was entered.
Read Time
The time is displayed as a system of 24 hours (HHMM).
Read Date
The date will be displayed with two digits for the month, the day, and the year (MMDDYY).
Automatic Cut
The sub-menu for "Automatic Cut" can be used to adjust the operation of the saw bar. The saw bar position sensor indicates the amount of rotation of the saw bar. When the saw bar has rotated enough to cut through the tree, the DASA automatically retracts the saw bar.
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| Illustration 26 | g00691884 |
(1) Saw bar position sensor. (2) Cam. (A) Direction of saw cut. (B) Direction of saw return. | |
Saw bar position sensor (1) senses the notches in cam (2). As the saw bar rotates, the sensor sends pulses to the DASA. Each set of pulses indicates the diameter of the tree that can be cut by the saw bar.
In the programming mode, go into the sub-menu for "Automatic Cut". The display screen will show the following message:
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| Illustration 27 | g00698717 |
Max Number of Edges
The following procedure informs the DASA of the number of pulses that are received by the DASA from the saw bar position sensor. The number of pulses is equal to the number of edges on the cam.
- Press "1" and "ENTER" set the number of pulses. Enter the number of edges. Press "ENTER".
Note: The value that is entered will be divided by six for setting the diameters in "Automatic Cut".
- Press "ESC" several times in order to return to the main menu.
Automatic Cut
Each pulse that is received from the saw bar position sensor indicates the distance of rotation of the saw bar. This indicates the diameter of a tree that can be cut by the saw bar. The pulses must be calibrated in order to indicate the distance of rotation of the saw bar. The diode for the saw bar position sensor lights for each pulse that is sent by the saw bar position sensor.
Note: The following procedure requires two people.
- Rotate the harvester head into the HORIZONTAL position. Raise the harvester head approximately 0.3 m (1 ft) above the ground.
- Stop the engine. Turn the engine start switch to the ON position. Remove the saw chain from the saw bar. Ensure that the saw bar is fully returned.
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Personal injury or death can result from a rotating saw chain. Do not operate the saw when personnel are near the harvester head. Remove the saw chain when testing and adjusting the harvester head. |
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- Slowly pull down on the saw bar until the diode for the saw bar position sensor on the DASA lights.
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| Illustration 28 | g00470598 |
Positions of Saw Bar for Calibration (A) Distance 1. (B) Distance 2. | |
- Measure distance (A) from the center of the lower stationary delimbing knife vertically to the bottom of the saw bar.
- Slowly pull down the saw bar until the diode turns off. Continue to pull down the saw bar until the diode lights. Now, measure the distance again.
- Repeat Step 5 until the saw bar has rotated outward completely.
- In the programming mode, go into the sub-menu for "Automatic Cut". The display screen will show a message that is similar to the message that is in Illustration 30.
- The values for each measurement can now be entered into the screen that is shown in the above illustration. To enter a value, press the number for the value. Type in the new measured diameter. Press "ENTER" in order to accept the value.
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| Illustration 29 | g00750529 |
HH45 | |
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| Illustration 30 | g00698766 |
HH55/HH65 | |
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| Illustration 31 | g00750531 |
HH75 | |
- Press "ESC" several times when the calibration is complete in order to return to the main menu.
Calibrate Automatic Felling
The sub-menu for "Calibrate Automatic Felling" can be used to adjust the distance of outward swing of the saw bar when a tree is felled. When the "CUT" button is briefly pressed, the saw bar swings outward in order to cut the tree. The distance of outward swing of the saw bar is based on the diameter that is measured by the delimbing knives.
The base of the tree can vary in shape. The rotation of the saw bar can be adjusted in order to compensate for the shape of the tree and the diameter of the tree. The values can be adjusted for three different species of trees.
To adjust the values, press "3" and "ENTER".
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| Illustration 32 | g00750171 |
HH45 | |
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| Illustration 33 | g00698773 |
HH55/HH65 | |
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| Illustration 34 | g00750170 |
HH75 | |
The distance of rotation of the saw bar can be adjusted for three different ranges of diameter. The following list contains the available ranges of diameter:
- The diameters of the tree are greater than the value that is entered on line 2.
- The diameters of the tree are between the values that are entered on line 2 and line 4.
- The diameters of the tree are less than the value that is entered on line 6.
Automatic cutting and automatic felling use the same diameter limits. However, the percentage values will vary. This is due to the varied shapes of the bases of the trees.
The values can be entered as a percentage of the values that are entered in illustrations above. If "100" is entered, the saw bar will rotate the amount that is shown in the table. If "50" is entered, the saw bar will rotate 50% of the amount that is shown in the table. If "150" is entered, the saw bar will rotate 150% of the amount that is shown in the table.
To adjust a value, select the screen for the species of tree that will be adjusted. Press the number key for the value and "ENTER". Enter the desired value. Press "ENTER". Press "ESC" several times in order to return to the main menu.
Calibrate Automatic Cut
The sub-menu for "Calibrate Automatic Cut" can be used in order to adjust the distance of the outward swing of the saw bar when a tree is processed. When the tree is cut by using automatic cutting or touch cutting, the saw bar swings outward in order to cut the tree. The distance of outward swing of the saw bar is based on the diameter that is measured by the delimbing knives. The distance of rotation of the saw bar can be changed in order to compensate for the shape of the tree and the diameter of the tree.
To adjust the values, press "4" and "ENTER".
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| Illustration 35 | g00750192 |
HH45 | |
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| Illustration 36 | g00698780 |
HH55/HH65 | |
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| Illustration 37 | g00750193 |
HH75 | |
The distance of rotation of the saw bar can be adjusted for three different ranges of diameter. The following list contains the available ranges of diameter:
- The diameters of the tree are greater than the value that is entered on line 2.
- The diameters of the tree are between the values that are entered on line 2 and line 4.
- The diameters of the tree are less than the value that is entered on line 6.
The values can be entered as a percentage of the values that are entered in illustrations above. If "100" is entered, the saw bar will rotate the amount that is shown in the table. If "50" is entered, the saw bar will rotate 50% of the amount that is shown in the table. If "150" is entered, the saw bar will rotate 150% of the amount that is shown in the table.
To adjust a value, select the screen for the species of tree that will be adjusted. Press the number key for the value and "ENTER". Enter the desired value. Press "ENTER". Press "ESC" several times in order to return to the main menu.