WLS-C Wheel Loader Scale Installation & User Manual To be the best by every measure 115203
Contents Introduction.............................................................................................................................................. 1 1.0 Installation ................................................................................................................................... 1 1.1 1.2 1.3 1.4 1.5 2.0 Indicator Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.14 Time Setting Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.15 Sensors Check Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.15.1 4.15.2 4.15.3 5.0 Input Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 On/Off Outputs Menu . . . . . . . . . . . . .
Introduction This manual is intended for use by technicians responsible for installing and servicing the WLS-C Wheel Loader Scale. Authorized distributors and their employees can view or download this manual from the Rice Lake Weighing Systems distributor site at www.ricelake.com. Unpack the contents of the shipment your system arrived in and verify the contents are correct, using the packing slip. Check for damage that could have occurred during shipment, and report any discrepancies immediately.
Indicator Pressure transducer Angle sensor Proximity Sensor and Cable Pressure transducer cable Indicator with wiring (see Table 1-1 for cable details) Figure 1-1. WLS-C Component List Wire Connect To PT1 Pressure transducer PT2 Second pressure transducer (optional) Prox1 Angle sensor on chassis Prox2 Angle sensor on boom Power (Brown/White) Positive terminal on battery Power (Green/Yellow) Negative terminal on battery Table 1-1. Cable Harness 1.1 Indicator Installation 1.
Figure 1-3. Indicator Mounted in Cab Figure 1-4. Indicator Back 1.2 Pressure Sensor Installation The pressure sensor reads the main line pressure of the lift cylinder (hydraulic line). Only one sensor is required; however, the WLS-C Wheel Loader Scale may be used with two pressure sensors if needed. There are two options for pressure sensor installation: • Install a flange block where the hydraulic line attaches to the hydraulic fluid distributor.
1. Select the fitting which works best. 2. Attach the fitting to the hydraulic valve. Note: The hydraulic line may need to be removed if using the weld-on flange. 3. The fitting should be mounted in a position to allow it to self-bleed with gravity. If possible, mount at an angle rather than perpendicular to the hydraulic line. (See Figure 1-10 through Figure 1-13 for examples). Figure 1-5. 1/4" BSPP Straight Fitting Figure 1-7. Weld-on Flange Figure 1-6.
Figure 1-10. Flange Welded to Hydraulic Line at Desired Angle Figure 1-11. Sensor Mounted at Non-Recommended Angle Figure 1-12.
Rubber gasket Figure 1-13. Sensor Mounted at Recommended Angle; Rubber Gasket Highlighted 4. Place the copper o-ring between the sensor and fitting (with the smooth side towards the sensor) and tighten the sensor with a crescent wrench. 5. Once the sensor is mounted, the hydraulic line can be bled. 6. After starting the machine, partially loosen the sensor. 7. Wait until fluid leaks out without any air bubbles before tightening it down. 8. Route wire back to the cab.
Figure 1-14. Location of Installed Proximity Sensor 40/50 cm Figure 1-15.
1.4 Angle Sensor Installation Place the chassis and boom angle sensors as shown in Figure 1-16. They should both be horizontal with the connector in the cabin direction. Two sensors are necessary because the relative angle between the chassis and the boom is used to perform the weighing computation. Figure 1-16. Sensor Placement 1. Using two to three 1" beads, weld the angle sensor’s mounting plate to the inside of the support arm. Mounting plate Mounting plate with angle sensor attached.
Angle Sensor Figure 1-18. Angle Sensor Installed On Support Arm NOTE: Angle sensors should be installed in line with the opening and bolt for the arm and must parallel on the boom. There are 3 bolts on the angle sensor: 1 on top and 2 on the bottom. The angle sensor should be installed so that the 1 bolt side faces up and the side with 2 bolts faces down. If installed correctly, the wire will be toward the cab of the loader. See Figure 1-19 on page 9. Angle Sensors Figure 1-19.
3. Route the sensor’s wire back to the cab. NOTES: Ensure there is enough slack in the wire to allow the support arm to raise fully without over-tightening the wire. Route along a stationary area of the wheel loader. Figure 1-20 shows the pressure sensor and angle sensor wires routed between a stationary cylinder and existing electrical line; this provides optimal protection. stationary cylinder pressure and angle sensor wires existing electrical line Figure 1-20.
Figure 1-22. Cables Routed Correctly Do not mount the cables too close to the motor, unless they are well insulated. If you use clips to fix the cables down, remember not to tighten them too much. Very often, cable breakage is due to over-tightened clips. Figure 1-23.
2.0 2.1 Display Indications and Button Functions Indicator Display Once power is applied, the system performs a self-test and displays the software version and the date of the latest upgrade. For example, WS06_05 (WS06_XX) 28/2/2010 (DD/MM/YY). Figure 2-1. WLS-C Software Version and Date of Last Update This screen is visible for only a few moments before it clears and displays the weighing screen. Figure 2-2. Weighing Screen 1. Total Weight 2. Partial Weight 3.
2.2 Indicator Buttons Indicator buttons are your interface for communicating with the indicator. Figure 2-3. Indicator Keypad Buttons Number referenced in Figure 2-3 Button 1 Total/Plus Function Press and hold for 3 seconds to zero. In static weighing mode without input, this button adds the partial load to the total. 2 Partial/Minus Partial zeroing button. 3 Print/Enter Press and hold for 3 seconds to access Operation menu.
3.0 Calibration To calibrate the WLS-C, you must enter calibration mode. This allows you to alter system settings. 3.1 Entering Calibration Mode Use the following procedure to access the calibration menu from the operating screen. 1. Press and hold the Print/Enter button until the User Menu appears. 2. Scroll down the menu list using the Partial/Minus button to reach the Setting Menu. Figure 3-1. Setting Menu 3. Press and release the Print/Enter button to enter the menu.
3. Press and release the Print/Enter button to confirm the password. You can scroll to another page of the menu by using the Partial/Minus button or go back a menu by pressing and holding the Tare/Sel button. 3.2 Parameters Prior to performing the empty and/or loaded calibration on both Dynamic or Static weighing systems, you must set the system’s general parameters in the Machine Setting menu.
Setting Description Get Reset Angle Press and release the Print/Enter button to memorize the actual value of relative angle to reset the weighing angle cycle. Should be set around 10 degrees lower than start weigh value. Angle value if left side should be positive value. Delete Angles Press and release the Print/Enter button to erase all angles value (Start Ang., End Ang., Reset Ang.). Save To save the angle calibration values to the memory.
10. Scroll down to the Save and save the Angle Cal Bucket Position Figure 3-8. Bucket Position for Get Reset Angle 3.4 Dynamic Calibration Use the following procedure to access the dynamic calibration menu from the operating screen. 1. Scroll using the Partial/Minus button to the Dynamic Cal. menu from the Setting Menu. 2. Select empty or loaded calibration (Empty Cal. or Loaded Cal.). NOTE: If the WLS-C has been configured for static weighing mode, access to this menu will be denied. Figure 3-9.
3.5 Empty Calibration 3.5.1 Performing an Empty Calibration User the following procedure to perform an empty calibration. 1. Scroll to Empty Cal. from the Dynamic Cal. menu. 2. Perform 10 empty lifts at decreasing RPM settings, starting at the max RPM with the bucket closed. 3.5.2 Empty Calibration Options The menu includes the following data: Setting Description Time Time elapsed during the lift, the lower this value is, the greater the speed of the lift cycle.
Index Table Description 3 2 Back side cylinder pressure or differential pressure 4 3 Time 5 3 Back side cylinder pressure or differential pressure 6 4 Time 7 4 Back side cylinder pressure or differential pressure X N Time Y N Back side cylinder pressure or differential pressure Table 3-3. Index and Table Range Figure 3-10. Empty Calibration Display 3.6 Loaded Calibration Use the following procedure to perform a loaded calibration proceed as follows. 1. Access Loaded Cal.
Setting Description KnownLoad2 Set the known load for calibration 2(if available): insert the value according to the machine’s capacity, keeping in mind the decimals to be displayed, and the resolution preferred (this value can also be set at the completion of the calibration). LT22 point Displays the number of lifts performed at decreasing speed, which will correspond to the number of points recorded in loaded calibration 2 table, (refer LT2 xxxx: -xxxxx).
3.7.1 Setting New Values Setting a new value, for example setting the Machine Setting, is completed using the following procedure. Machine Setting Rod 1 1. Press and release the Print/Enter button. An asterisk will appear on line 1 above the value to be modified. * 0 Rod 1 2. Modify the value of each figure by pressing and releasing the Partial/Minus button to change the value. * 1 Rod 1 3. To shift the asterisk on the next value to be modified by pressing the Tare/Sel button. * Rod 1 1 4.
3.9 Password (PIN) Menu There are multiple functions accessible under the Password (PIN) menu. Menu Line Menu Text Type Description 1 2 CAL. PIN XXXX Setting Insert the PIN to gain access to the calibration menu. See “Setting New Values” on page 21. 2 Enter to Confirm Command Press Enter to confirm the PIN setting. 2 Access Denied Viewing This message is displayed if the PIN is incorrect. Table 3-6. Password Settings Menu 3.
Menu Line Menu Text Type Description 2 Th. Reg. xxxx Setting Setting threshold in reading Adc point to know if the regenerative valve is On or Off. 2 Save Command Saving permanently all modifications to parameters. Table 3-7. Machine Settings Menu 3.11 Dynamic Setting Menu There are multiple functions accessible under the Dynamic Setting menu. Menu Line Menu Text Type Description 1 Dynamic Setting Text 2 Empty Cal. Access to sub-menu Access to empty calibration menu. 2 Loaded Cal.
4.0 Operation The WLS-C system is based on the measurement of the lift cylinder piston pressure (by means of the pressure transducer) and the calculation of the raise speed (with angle sensor). 4.1 Making a Weighment Use the following procedure to weigh a load based on the Active Weighing mode. Dynamic Weighing with 2 Proximity Sensors on Forklifts Following the initial lift off the ground, maintain a constant lifting speed during the complete weighing cycle.
Figure 4-1. Actual Tare Value 4.3 Disabling the Weighing Feature In the case that the machine may be required for alternative tasks while performing loading operations, and it is necessary to retain the value of load accumulated to that point, you can interrupt the operation by temporarily disabling the weighing cycle, and resume the operations later to complete the loading of that particular truck. 1. Press and hold the Print/Enter button to access the User menu. 2.
Figure 4-3. “Traffic Light” Function The 3 LED’s on the WLS-C, as shown in Table 4-3, will illuminate according to the percentage of the Total Load lifted in relation to the Maximum Load. This is also known as the “Traffic Light” function. • Green LED: lit when the Total Weight is between 0% and 89% of the Maximum Load set. • Yellow LED: lit when the Total Weight is between 90% and 99% of the Maximum Load set. • Red LED: lit when the Total Weight equals or exceeds 100% of the Maximum Load set.
It is possible to set a factor of ±10% in relation to the calibration value. 110 indicates the maximum positive correction to increase the weighed load, 90 indicates the maximum negative correction factor to decrease the weighed load, and 100 means no correction factor should be set Figure 4-5. Correction Function 4.7 Adjust Display Contrast Use the following procedure to adjust the display’s contrast. 1. Press and hold the Print/Enter button for 3 seconds to enter the User menu. 2.
3. Press and release the Print/Enter button to change the language. These are the languages available: IT = Italian (Italiano) UK = English ES = Spanish (Espanol) FR = French (Francais) TR = Turkish FM = Flemish PT = Portuguese GE = German DK = Danish To return to the operating display, press and hold the Tare/Sel button. 4.9 Setting Date and Time Use the following procedure to set the date and time. 1.
4.10 Diagnostics The “Sensors Check menu” allows viewing the status of all inputs and outputs. 1. Press and hold the Print/Enter button for 3 seconds to enter the User menu. 2. Scroll to the User menu from the operating screen. 3. Scroll down using the Partial/Minus button until you see the Sensors Check page. Figure 4-9. Sensor Check Menu 4. Press and release the Print/Enter button to enter the sub-menu. Proximity To select the second Proxy press and release the Print/Enter button.
4.12 Menu Flowchart Operating Screen User Menu Time Setting Sensors Check Setting Menu Access by Password Input Status On/Off Outputs Pressure Sensors Proxy 1 Buzzer Press. Low Proxy 2 Out 4 Press. High Boom Ang Chassis Ang. Figure 4-11. Operation Menu Flow 4.12.1 Setting New Values Setting a new value, for example setting the Machine Setting, is achieved by using the following procedure.. USER Menu Max Load 0.00 1. Press and release the Print/Enter button.
3. To shift the asterisk on the next value to be modified by pressing the Tare/Sel button.. Max Load * 0.06 4. Increase or decrease the value by pressing and releasing the Partial/Minus or Total/Plus button.. Max Load * 0.00 5. Press and release the Print/Enter button to save the changes. The asterisk will disappear. 6. Scroll to another page of the menu or return to the operation menu by pressing and holding the Tare/Sel button to the previous menu. 4.
Menu Line Menu Text Type Description 2 Correction: xxx Settings Correction percentage of single weighing in case it may be necessary to correct minor errors detected in each weighing.
4.15 Sensors Check Menu There are multiple functions accessible under the Sensors Check menu. Menu Line Menu Text Type Description 1 Check Menu Heading 2 Proximity Access sub-menu Access to On/Off inputs menu. 2 On-off Output Access sub-menu Access to On/Off outputs menu. 2 Transducers Access sub-menu Access to analogue inputs menu. Table 4-4. Check Settings Menu 4.15.
5.0 Printer (Optional) The WLS-C roll tape printer is a very easy to use 24 columns thermal printer. The printer has a thermal printing head, fast type, and is to be used with standard thermal roll that are 57.5 mm width. Due to its lightness and compact size, it can be easily fitted into a wide range of applications. The WLS-C roll paper printer includes customized programming capability making it capable to meet customized requirements.
WLS-C roll tape printer is provided with a single RJ11 pins connector including a RS232 link. Is also available with a rugged connector cable Printer CV1 STP6/10 cable connector PIN Signal PIN Signal 1 +VB Power Supply A Power Supply 2 GND Signal ground B RX Input 3 RX Serial link input signal C TX Output 4 TX Serial link output signal D Ground 6 GND Table 5-1. Interface Connections 5.
64.5 96 112 88.2 146 Figure 5-3.
WLS-C Limited Warranty Rice Lake Weighing Systems (RLWS) warrants that all RLWS equipment and systems properly installed by a Distributor or Original Equipment Manufacturer (OEM) will operate per written specifications as confirmed by the Distributor/OEM and accepted by RLWS. RoughDeck fabricated platforms and weldments are warranted against defects in materials and workmanship for five (5) years. Load cells and all other components are warranted for two (2) years.
For More Information System Manuals • WLS-C Wheel Loader Scale Installation & User Manual, PN 115203 Literature • WLS-1/WLS-C Wheel Loader Scales Sales Literature, PN 103216 Web Site • • WLS-C Wheel Loader Scale Product Page at http://www.ricelake.com/product.aspx?CatID=4602 Frequently Asked Questions (FAQs) at http://www.ricelake.com/faqs.aspx Contact Information Hours of Operation Knowledgeable customer service representatives are available 6:30 a.m. - 6:30 p.m. Monday through Friday and 8 a.m.
PN 115203 12/10
