920i® Weigh Center

1.0 Introduction

The 920i Weigh Center can be installed on most Rice Lake Weighing Systems livestock scales. This system is manufactured with top quality components and is engineered using the latest technology to provide operating features and reliability unmatched for years to come.

This manual provides operating instructions and configuration information for the 920i Weigh Center.

[info] Manuals and additional resources are available on the Rice Lake Weighing Systems website at www.ricelake.com

Warranty information can be found on the website at www.ricelake.com/warranties

Safety Definitions:

• DANGER: Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. Includes hazards that are exposed when guards are removed.
• WARNING: Indicates a potentially hazardous situation that, if not avoided could result in serious injury or death. Includes hazards that are exposed when guards are removed.
• CAUTION: Indicates a potentially hazardous situation that, if not avoided, could result in minor or moderate injury.
• IMPORTANT: Indicates information about procedures that, if not observed, could result in damage to equipment or corruption to and loss of data.

General Safety

[warning] Do not operate or work on this equipment unless this manual has been read and all instructions are understood. Contact any Rice Lake Weighing Systems dealer for replacement manuals.

[warning] Failure to heed may result in serious injury or death.

• Do not allow minors (children) or inexperienced persons to operate this unit.
• Do not operate without all shields and guards in place.
• Do not use for purposes other than weighing.
• Do not place fingers into slots or possible pinch points.
• Do not use any load bearing component that is worn beyond five percent of the original dimension.
• Do not use this product if any of the components are cracked.
• Do not exceed the rated load limit of the unit.
• Do not make alterations or modifications to the unit.
• Do not remove or obscure warning labels.
• Keep hands, feet and loose clothing away from moving parts.
• Some procedures described in this manual require work inside the indicator enclosure. These procedures are to be performed by qualified service personnel only.
• Always be certain when lowering the scale that everyone is clear of the scale and any moving parts.
• Use two hands when gripping the lift handle to raise or lower the scale.
• Be sure the gates are latched or tied inward before transporting the scale.
• Ensure all three hitch lock pins are installed and the suspension stops are in the transport position before moving the scale.

[important] Livestock scales are not intended for the transportation of livestock or any other goods. Any addition of weight to the scale while in transport mode can cause premature component failure and voids the Rice Lake Weighing Systems warranty.

Animal Safety

Animal safety is a very serious issue and must be observed when handling any type of animal. The scale surface may become slippery during use; a build-up of manure on the scale may reduce traction. It is recommended to take any necessary precautions to maintain an acceptable level of animal footing.

Calibration

Do not calibrate this scale with a weight cart having a gross weight in excess of 25% of the total capacity of the scale. See the scale installation manual for specific calibration instructions. This device is designed to be calibrated with single block weights spread evenly throughout the floor of the scale. If using a test cart, use 3/4" plywood for testing and calibration. This will minimize the damage to the x-lug flooring. Shift tests should not be done with more than 4,000 lb or 1,815 kg in a 4' x 4' area. Failure to comply with this warning will result in damage to the scale and void the warranty.

1.1 FCC Compliance

United States

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Canada

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la Class A prescrites dans le Règlement sur le brouillage radioélectrique edicté par le ministère des Communications du Canada.

1.2 Important Decals

For safety decal information see Section 1.2.1. For non-safety decal information see Section 1.2.2 on page 9.

Figure 1-1. Decal Locations

Table 1-1. Decals List

1.2.1 Safety Decals

1.2.2 Non-Safety Decals

Figure 1-3. Contrast Control Switch Label

Figure 1-4. 920i Ag Indicator Label

Indicator Operations

• Power Scale: Press the power switch to turn the indicator on or off.
• Enter Shrink: Shrink value is applied to the gross weight and is limited to 0.00-100.00%. Press the Shrink % softkey to change the shrink percentage.
• Enter Head Count: 1. Insert ticket into the printer. Press FORWARD on the printer to secure the paper. 2. Verify the scale is level. If not, the screen displays the current pitch and roll. 3. Press [zero] to re-zero scale if required. 4. Load animals onto scale. 5. Press the Weigh Animals softkey. Enter Head Count displays. 6. Enter the number of animals and press [enter]. Once the scale is stable, head count, total weight and average weight per head is displayed and a ticket begins to print and advance. 7. Unload the scale. 8. Repeat steps 4-7 until all animals from the current batch have been weighed. 9. Press the Batch Complete softkey to complete current batch of animals. Summary information is printed on the ticket and the ticket is released. 10. Press the Reprint softkey any time prior to starting the next batch to reprint the last ticket.

Softkey Operations

• Weigh Animals: Press to begin weighing animals. Press each time a new group of animals is placed on scale, when a batch is in process.
• Shrink: Allows input of a shrinkage value when weighing animals.
• Batch Complete: Press to complete batch and print summary ticket.
• Reprint: Prints last stored ticket until next batch is started.
• Setup: Password protected - displays current pitch and roll angles, and allows input of the following: Reports, USB, Change Password, Time/Date, More, Back, % Delta Wt, Print Report, Exit.

Contrast Control: Adjusts display contrast depending on ambient light and ambient temperature.

1.3 Overview

[caution] Animal safety is a very serious issue and must be observed when handling any type of animal. The scale surface may become slippery during use; a build-up of manure on the scale may reduce traction. It is recommended to take any necessary precautions to maintain an acceptable level of animal footing.

The Weigh Center houses the 920i indicator and ticket printer. Figure 1-5 shows the layout of the control box. Figure 1-6 on page 11 shows a close-up of the 920i indicator. The control box is powered by a deep cycle battery located in the battery box mounted to the scale frame. This battery is normally charged during towing; however, if the battery is low, charge it using a trickle charger.

Figure 1-5. Weigh Center

[note] The Weigh Center should be given at least 15 minutes to warm up in cold weather prior to use.

1.4 Front Panel

The keys, annunciators and knobs of the 920i Weigh Center front panel are described in the following sections.

Figure 1-6. 920i Indicator Front Panel

1.4.1 Keypad Functions

Table 1-2. Front Panel Display

1.4.2 Annunciators

Table 1-3. Annunciator Symbols

1.4.3 Softkeys

Figure 1-7. Softkey Assignments

Table 1-4. Softkey Descriptions

Figure 1-8. Setup Softkeys (First Screen)

Figure 1-9. Setup Softkeys (Second Screen)

1.5 Indicator Settings

1.5.1 Date and Time

The 920i has a built-in time and date clock that automatically adjusts for leap years. The real time clock will run even if power is removed from the indicator. There is a battery inside the indicator that will keep the clock running continuously while there is no power to the indicator.

[note] There is no need to be in Calibration mode to change the time and date.

Setting Time/Date

Use the following steps to set up the time and date.

1. Press the Setup softkey.
2. Press the Time/Date softkey.
3. Use the directional arrows to enter the current time and date.
4. Press the Enter key to return to the setup menu.
5. Press the Exit softkey to return to the main menu.

[note] Press the Cancel softkey to exit without saving any changes.

1.6 Mount to Animal Scale

Use the following steps to mount the 920i Weigh Center to the animal scale (see Figure 1-10 on page 15 and Figure 1-11 on page 16).

1. Use mineral spirits to clean the wall tubes where the bracket will mount, as well as the space between the holes on the mount bracket.
2. Run a bead of silicone in the area where the mounting bracket will be mounted.
3. Install the adhesive tape on the mounting bracket between the holes.
4. Place mounting bracket onto cage wall by pressing the adhesive tightly to the cage.
5. Secure with four bolts (included).
6. Mount Weigh Center onto the mounting bracket and route the cable to the battery.
7. Install the clamps to secure the conduit.
8. Secure the lower end of the conduit by drilling a hole through the cage sheeting and install the clamp with the bolt provided.

Figure 1-10. Weigh Center Mounting

Battery Box Connections

1. Connect the scale cable and secure with a cable tie.
2. Connect the power wires as shown in Figure 1-11 on page 16.
3. Replace the battery cover.

Figure 1-11. Wiring Diagram

2.0 Operation

The following sections describe the basic operation of the 920i Weigh Center.

2.1 Weighing Multiple Animals

1. Press the power switch to turn on the indicator.
2. Insert a ticket into the printer.
3. Press FORWARD on printer to secure the paper.

[note] If paper will not go into the printer under the print head, make sure the release light is on. If it is not, press RELEASE on the printer.

4. Verify the scale is level. If it is not, it will blank the weigh display screen and go to a screen showing the current pitch and roll.
5. Press [zero] to re-zero the scale (if required).
6. Load the animals onto the scale.

[note] Animals moving around could cause scale to become out of level. An Out of Level prompt will display momentarily until animals settle down, if it goes off within five seconds it's ignored.

7. Press [Weigh Animals]. Enter Head Count is displayed.
8. Use the keypad to enter the number of animals to be weighed and press [enter]. The indicator captures a stable gross weight.
9. If Verify Head Count is turned on, Re-Key in Head Count is displayed. Use the keypad to enter the number of animals to be weighed and press ENTER. The head count, total weight and average weight per head will be displayed.

[note] A line (ticket) will print out with animal count, weight, units and average weight to printer. Typically when using verify head count, the operator will remove the cattle before entering the head count the second time.

Table 2-1. Weight Display

• Last Weighment - Provides information on previous group of animals that were on the scale.
• Current Weighment - Provides information on number of animals currently on scale, total weight and the average weight per animal.
• Totals - Provides information on the total of all animals weighed in the current weigh batch and their average weight.

10. Unload the scale.
11. Repeat Step 4 on page 17 – Step 10 until all animals from the current batch have been weighed.
12. Press [Batch Complete] to complete the current batch of animals. Summary information will be printed on the ticket and the ticket will be released.

2.1.1 Weigh Ticket Print-Out

Press Batch Complete to obtain the Weigh Ticket for the current batch of animals.

Figure 2-1. Weigh Ticket Example

2.1.2 Last Ticket Reprint

Press [Reprint] any time prior to starting the next batch to reprint the last weigh ticket.

2.1.3 Summary Report Ticket

Press [Print Report] to generate the Summary Report Ticket.

This will printout a summary of all the batches stored in the Report memory, if the Report function is enabled in the Setup menu. If enabled, this Report function will append and store the weigh ticket batches in the Report memory. Upon print-out, the operator has the opportunity to clear the report memory.

[note] If the reports function is enabled in the Setup menu, the summary information will also be stored to the transaction database where it can be printed or uploaded to a PC.

Figure 2-2. Summary Report Ticket Example

2.1.4 Shrink

Press [Shrink %] at any time to change the shrink percentage (0.0-99.99 percent) to be subtracted from the total gross weight. This is saved through power cycles. The default is 0.0 percent.

2.2 Weighing a Single Animal

1. Press [Weigh Animals] and enter a head count of 1.
2. Press [Batch Complete] to print the summary information of a batch on the weigh Ticket.
3. Press [Print Report] to print a complete summary report of all batches in report memory.

2.3 Verify Head Count

2.3.1 Function OFF

If the Verify Head Count function is OFF in the setup menu, the program will operate as normal. It will only prompt the operator once to enter the Head Count prior to printing the weighment value.

2.3.2 Function ON

If the Verify Head Count function is ON in the setup menu, the program displays Re-Key in Head Count for operator verification. Use the keypad to enter the number of animals to be weighed and press ENTER. The head count, total weight and average weight per head will be displayed based on the latest value entered.

[note] A line (ticket) will print out with animal count, weight, units and average weight to printer. Typically when using verify head count, the operator will remove the cattle before entering the head count the second time.

3.0 Configuration

3.1 Database and Stored Workbooks

Table 3-1. TRANS Database Table (1000 Records)

Table 3-2. Option Card Locations

Table 3-3. Digital I/O

Table 3-4. Serial Port (PN 129998) for Mobile Scale with Inclinometer

Table 3-5. Serial Port (PN 132302) for Static Scale without Inclinometer

3.2 Configuration Mode

Use the following steps to place the indicator into configuration mode:

1. Remove the screw on the front panel.

Figure 3-1. Configuration Screw Location

[note] Keep the screw for re-installation into the panel when configuration is complete.

2. Push a non-conductive tool into the hole until it engages the configuration switch. CONFIG displays.
3. Set the configuration parameters as desired.
4. Reinstall the screw, sealing according to NTEP standards.

3.3 Zero The Inclinometer

To zero the inclinometer, place the indicator into the configuration mode as follows. Adjust the scale platform for level in both pitch and roll using a bubble or electronic level.

1. Put the indicator in configuration mode using steps 1 and 2 from Section 3.2.
2. Navigate over to Serial, then down to Port 1.
3. Navigate down to ICLIN.
4. Navigate down to Baud. At this point, a ZeroAngle softkey will appear.
5. Press the ZeroAngle softkey. There will be no indication the command was accomplished - check the angle indications to verify.
6. Press the Save & Exit softkey to return to normal weigh mode.
7. Once in normal weigh mode, press the Setup softkey. The pitch and roll values will be displayed. Due to heavy filtering, it may take several seconds for the angle values to settle.

3.4 USB Flash Drive

3.4.1 Loading Configuration Files and Databases

Certain files may take extended periods of time to load directly from a PC to the 920i. A flash drive is recommended for fast loading times. It is also recommended to create a folder matching each 920i's unit ID number, if using multiple 920i units. When loading configuration files, the unit will load the file contained in a folder matching its UID# (the default UID# is 1). If a folder matching the UID is not found, the unit will load the first file found.

[important] If loading a configuration file from a UID subdirectory, ensure the configuration file does not change the unit ID. Otherwise, a .COD file in that subdirectory will not be recognized until the UID is manually reverted to its original number.

[note] File names are limited to eight characters.

1. Using a PC, copy the desired configuration file to the flash drive.
2. Insert the flash drive to the 920i Weigh Center's Type-A USB connector.
3. Press the USB softkey.
4. Select Drive and press Enter.
5. Place the indicator in setup mode and navigate to the SERIAL » PORT2 menu shown in Figure 3-2 on page 23.

Figure 3-2. Port 2 Screen

6. Press the Load File softkey.
7. Select Load Configuration and press Enter.

3.4.2 Loading Database Files

[note] File names are limited to eight characters. If loading a database file, be aware the indicator uses the alias name and a .db file extension when saving database files.

1. Using a PC, copy the desired database file to the flash drive.
2. Insert the USB flash drive into the 920i Weigh Center's Type-A USB connector.
3. Press the USB softkey.
4. Select Drive and press Enter.

Figure 3-4. Load All Databases Selection

5. Select Load All Databases (*.db) and press Enter.

3.5 Saving Configuration Files and Databases

Certain files may take extended periods of time to save directly from a PC to the 920i. For fastest save times, using a flash drive is recommended.

[important] When saving a configuration file, the indicator will attempt to save to a folder matching its UID number (the default UID# is 1). If a folder is not found, the file will be saved to the drive's root directory and overwrite any existing files matching its UID# followed by the .920 file extension i.e., 1.920i.

[note] When 920i saves a database, it uses the alias name and a .db file extension.

1. Insert the flash drive into the 920i Weigh Center's Type-A USB port.
2. With the indicator in weigh mode, press the USB softkey.

[note] If the USB softkey is not displayed, see the 920i Programmable HMI Indicator/ Controller Installation Manual(PN 67887).

3. Select Save Configuration or Save All Databases (*.db) and press Enter.

Figure 3-5. Save Configuration Menu

4.0 Front Panel Calibration

Figure 4-1. WZERO Calibration Display

The CALIBR sub-menu (under the SCALES menu, see Figure 4-1) is used to calibrate the 920i Weigh Center. The zero, span and linear calibration point displays provide a set of softkeys used specifically for calibration procedures.

Table 4-1. Calibration Submenu

Use the following steps to calibrate the 920i using the front panel.

1. Place the indicator in setup mode. The display reads Scale Configuration.
2. Remove all weight from the scale.
3. With the SCALES menu highlighted, press the Down key.
4. Select the scale to be calibrated.
5. Press Down again in order to highlight the GRADS parameter.
6. Press Left to highlight the CALIBR submenu.
7. Press Down to go to zero calibration (WZERO).
8. Ensure scale is empty, then press down again to show the current WZERO value.
9. Press the Calibrate softkey to calibrate zero. When complete, the new A/D count for the zero calibration is displayed.
10. Press Enter to save the zero calibration value and go to the next prompt (WVAL).
11. With WVAL displayed, press Down to show the stored calibration weight value.
12. Use the numeric keypad to enter the actual value of the calibration test weights.
13. Press Enter to save the value and go to span calibration (WSPAN).
14. Place test weights on the scale.
15. Press Down again to show the current WSPAN value.
16. Press the Calibrate softkey to calibrate span. When complete, the new A/D count for the span calibration is displayed.
17. Press Enter again to save the span calibration value and go to the next prompt (WLIN).
18. Press Up to return to the SCALES menu, or press the Save and Exit softkey to exit Setup mode.

5.0 Appendix

5.1 Repair Parts

Figure 5-1. 920i Weigh Center Parts Illustration

Table 5-1. 920i Weigh Center Parts

Figure 5-2. Weigh Center Mounting and Wiring Assembly Parts Illustration

Table 5-2. Weigh Center Mounting and Wiring Assembly Parts

5.2 Parts Kit List

Table 5-3. Parts Kit

Figure 5-3. 920i Weigh Center Parts Illustration – Internal Components

Table 5-4. 920i Weigh Center Parts List – Internal Components

5.3 Weigh Center Dimensions

Figure 5-4. Weigh Center Dimensions

5.4 Maintenance Schedule

Weekly

Check all external cables and conduit for damage.

Yearly

Check indicator level switch.

5.4.1 Checking Level Switch

During normal operation of the level sensing device, the operator will not see any messages from the system. The software has been designed so only errors will be reported to the operator.

If the scale is out of level during setup, the Out Of Level message will be displayed. If during operation the scale should shift and become out of level, the same message will be displayed and the operator will not be able to weigh animals while the out of level condition exists.

[note] Should the level sensor become faulty, the Out Of Level message will be displayed and the pitch and roll angle may display No Sensor Comm. Replacement of the level sensor or CPU board in the indicator may be required.

1. Place the system on a slope greater than four degrees (example – a steep approach).
2. Alternately, jack up one side of the base frame so that the scale is off level by more than four degrees.
3. Turn on the indicator and check the display.

If the indicator does not display Off Level, there may be a faulty PCB. Consult the local scale dealer. This test should be performed in all four directions: front low, rear low, right side low and left side low.

5.5 Troubleshooting Chart

Table 5-5. Troubleshooting

Table 5-5. Troubleshooting (Continued)

6.0 Specifications

Power: AC voltages: 115 VAC; Frequency: 50 or 60 Hz; DC Voltages: 12 VDC

Power Consumption: 340 mA, maximum at 115 VAC (26 W)

Excitation Voltage: 10 ± VDC, 16 x 350 ohm or 32 x 700 ohm load cells per A/D card

Analog Signal Input Range: -10 mV to +45 mV

Analog Signal Sensitivity: 0.3 µV/graduation minimum at 7.5 Hz; 1.0 µV/graduation typical at 120 Hz; 4.0 µV/graduation typical at 960 Hz

A/D Sample Rate: 7.5 to 960 Hz, software selectable

Resolution: Internal resolution: 8,000,000 counts; Weight display resolution: 9,999,999

System Linearity: ± 0.01% full scale

Communication Ports: Four ports on CPU board support up to 115,200 bps; Port 1: Full duplex RS-232; Port 2: USB Type A and Type B connectors; Port 3: Full duplex RS-232, 20 mA output; Port 4: Full duplex RS-232, 2-wire RS-485, 20 mA output

Display: (L x H) 4.6 x 3.4 in (116 x 86 mm); 320 x 240 pixel VGA Liquid Crystal Display (LCD) module with adjustable contrast; Transflective display - standard

Keyboard: 27-key membrane panel, tactile feel

Temperature Range: Certified: 14°F to 104°F (-10°C to 40°C); Operating: 14°F to 122°F (-10°C to 50°C)

Warranty: Two-year limited

Approvals: NTEP CC Number: 01-088 Class III/IIIL 10,000d; Measurement Canada AM-5426 Class III/III HD 10,000d; cULus LISTED