Conair GB/ WSB manual

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ERROR CORRECTIONS: RATE NUMBERS. (DATA line 2)

The RATE numbers are used by the software, each cycle, to calculate material dispense times. They are adjusted every cycle until flow rates stabilize. When a significant error is detected, the software adjusts the RATE numbers.

The GRAM number is adjusted first. The TIME number (interrupts) is changed only if either number falls above 32,768, or both fall below 16,384. In this event both GRAM and TIME numbers are doubled or halved until the larger of the two is between 16,384 and 32,768.

In other words, both numbers are kept as large as possible (up to 32,768) allowing for the most accurate math, but not so large as to overflow the registers.

Only the GRAM number changes from cycle to cycle, except under the conditions noted above.

Check the GRAM number for a series of consecutive cycles. If it remains unchanged, then the dispenses are accurate enough to not trigger error corrections. Another possibility is that the parameters (MI and NC) that determine when error corrections occur are somehow out of range preventing corrections that should be occurring.

The PRC parameter limits adjustments to 10 percent. Do not expect any single GRAM number change larger then 10 percent.

A gradual decrease in the GRAM number indicates a slowing rate, a hopper that is becoming empty for example. A jump in rate (increased GRAM number) occurs when the hopper is refilled.

If Errors are occurring, but the GRAM number is NOT adjusting, check the NC parameter and the MI parameter. These control weather or not error corrections occur. Both are set and adjusted automatically by the software. MI is set after each start up, after 10 cycles have run without retries. MI will be set to indicate 80 percent of normal dispense rate expressed as grams per second.

NC adjusts slowly over extended periods of running. NC indicates, in grams, the upper limit of the error in 60 percent of the dispenses. A high number usually indicates poor flowing material. Vibration or drifting load cells are other possibilities.

DISPENSE TIMING: (DATA line 3)

The second number is the number of interrupts calculated to dispense the material. If these times are consistent but the weight of the first dispense varies, then the material does not flow well, or consistently. Another possibility is excessive vibration or interference with the weigh bin.

Excess vibration, particularly on small dispenses, may cause incorrect weight readings even though the weight dispensed was, in fact, correct.

If the timing number is very small, 10, 20, 30 interrupts, perhaps this is asking too much from a slide valve. Very short times mean you want

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Contents Gravimetric Blenders Date Manual Number UGB006/1103 Serial numbers Model numbers Four Component Software Part Troubleshooting / SoftwarePart Hardware Maintenance Part OperationSpecial Features Assembly InstructionsCheck OUT Procedure Proceed to Safety Hazards NextProceed to Assembly Next Safety Hazards MIX BladesSafety Features Safety Interlock Switch Additional MIX Blade HazardDisclaimers Please Be Careful Part AssemblyLoad Cells are Easily Damaged On the NextPage Wiring Considerations Proceed to Check OUT Procedure NextAT this Point Procedure What should Happen Plug in ControllerTurn Power on Touch Weigh BIN Very LightlyLED # Press Alarm KEYPress REG KEY Press NAT KEYPage Password ExitCAL OFF Part Operation Load Cell CalibrationBe Sure CALOperate Proceed to Normal Operation NextOper COLGB/WSB MB Selected Models Special InstructionsMicro Pulse GB/WSB 240RPower on If Problems DevelopPower OFF Instructions for Normal OperationNormal Operating Sequence Each Cycle Exit Regrind Eight Character Display ROM OKAlarm Silence Right Column AlarmsStrobe Light and Beeper Alarms LED LightsMixer Motor Fuse Mixer Motor ON/OFF/TIMED SwitchMixer Motor Outlet Internal Fuses KeypadDate RUN Keypad Automatic Operation ModeRecipe RCPTABLE, FLG SaveBtch Page Fast TAGKeypad Manual Mode ALLTimed Time ADDPage Keypad Program Mode YLD Ctrl ParaStar Functions Page Page Page Page Page Page Page Page MIX Time ParametersParameter List Brief Explanations XXX RLO Page CPL Full Explanation of Parameters No ALARM, no Retries MPOMIX KDF / WDF BERPage ROV Page Example RHL is Set 10 percent Page Setting SETPage Page Page Page Page XTP XCV + XRCTCV + TRC XAL XULMCT PTDLIQ Page APO Parameter Default Settings Four SoftwareFLG RPO NPO CPO MPO RAL NAL CAL AAL MIX JOGNWT NPT CPT APT RWTRTI NTIChanging Parameters REG Natural COL Prnt OFFPrnt TotalFinal DISP,% What to Check for Page Page Page Time Natural Special TestsTime Calibrate NaturalDate Time Totals Grand PCT Current Material Usage InformationPARAMETER, PRT Cycles Last Printed 11/01/90Part IV Troubleshooting What to do Increasing Throughput Typical Problems Page Normal Operating Sequence Material Runs OUT Verifying Load Cell Function CNT Load Cell RAW Signal ReadoutCNT OFF Results to Expect Core Dump Clear RoutineClear ALL Restart Weigh BIN Dump Valve Soft Close Clean OUT Issues MIX Problems Page Wait Recalibration of Load CellsZero FullLoad Cells Blender Preventive MaintenanceDispense Gates Weigh BinsThese Instructions for Totalizers only Blender Special Totalizer FunctionStop END of Cycle TotalizeComputer Outputs Wiring Supplement Call Appendix A-2 Specifications Gravimetric Batch Blenders Autoweigh GBM Series ModelsGravimetric Batch Blenders AutoWeigh GB100 Series Models TOP View Front View Side View120V/1 phase/50-60 Hz 240V/1 phase/50-60 Hz Gravimetric Batch Blenders GB 220 and 420 ModelsGravimetric Batch Blenders AutoWeigh GB240 and GB440 Models TOP View Mounting InterfaceGravimetric Batch Blenders AutoWeigh GB900 Series Models 2124Gravimetric Batch Blenders AutoWeigh GB1840 and 1860 Models GB1840 GB1860Gravimetric Batch Blenders Wsbm Series models Control Remote Mounted Models WSBM22 WSBM131 WSBM140Gravimetric Batch Blenders WSB 100 and 100R Models Side View Front View Side View, R Model Front View, R ModelGravimetric Batch Blenders WSB 220 and 420 Models 24.4Gravimetric Batch Blenders WSB 240/440 and 240/440R Models WSB442Gravimetric Batch Blenders WSB 1840, 1850 and 1860 Models Appendix C Appendix C Appendix C Appendix C Appendix C Appendix C Appendix C Appendix C