Omega DPF78 manual Counter DPF75, DPF76

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COUNTER STEP 2: DPF75, DPF76:

A,)

Reset to zero "rST 0" will allow us to count up. "SET Pr" counts down from the preset value.

B.)

To read the total in whole gallons, set the decimal point to the far right.

C.)

Since you do not want to sum or take the difference of two inputs, choose "A SEP B" (DPF75

 

only).

D.)

The frequency will exceed 40 Hz, so you will need to select "HI CPS". "LO CPS" provides

 

debounce filtering for contact closures.

RATE STEP 3: DPF75, DPF78

A.)

Select "SCALE" to engage the K-factor.

B.)

Select "=60".

C.)

Normalize at 1.5 seconds.

D.)

Set 4 significant figures.

E.)

Set 02 sec delay.

LOCK STEP 4: DPF75, DPF76 & DPF78

Before you finish this step, write down your personal lock-out code and store it in a safe place. Here is where you select and enter the code and what will be locked. To lock the meter you must wait until you are in the RUN mode. Press the "LOCK" key, use the arrows to display your code, then Enter.

Repeat to unlock.

RELAYS STEP 5: DPF75

The DPF76 relays can only trigger on batch or total. The DPF78 relays can only trigger on rate. The DPF75 relays can be programmed to trigger on rate or total. The relay setpoints for rate or total for all versions with relays are set with the PRE A and PRE B buttons. When the relays are set for non- latching, the batch total will automatically reset at the batch preset. The programming is now com- plete. Here is what you will see with 100 Hz input frequency (equal to 32.66 GPM flow rate). The rate is: "r 32.66". The batch will continuously increase: ("480"); the grand total will also continuously increase ("...4.8.0"). Notice that the decimals points for the grand total are inverted - all are lit except where the decimal point is actually located.

To read total gallons to a tenth of a gallon: in Step 2, change the dPLoC to allow one decimal place "XXX.X" for the counter. But this will cause a shift in the rate display so you will also need to shift the K-factor in Step 1. Change the K-factor to 18.366 to read the correct units. Now the 100 Hz signal will yield "r 32.66", "480.0", ". . 4.8.00.".

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Contents User’s Guide For immediate technical or application assistance Table of Contents Programming Example Quick SET-UP GuideCounter DPF75, DPF76 Description Description & SpecificationsDimensions HOW to Mount the UnitUP/DOWN Control and Quadrature Inputs WiringQuadrature Input UP/DOWN ControlDo not USE PIN 7 with These Meters Connecting AC / DC Power Wiring ConsiderationsOutput Jumper Selections Millivolt Input Option What can YOU VIEW?=CLOSE, O=OPEN 30V InputProgram Programming FlowchartOperating the Front Panel Portion of Menu for Setting Rate Variables Portion of Menu for Setting Counter VariablesProgram Codes and Descriptions DescriptionRear View TerminationsScaling Factor Examples Calculating Scale FactorsPress ProgrammingRemarks ScalingPrgm Setting CounterRemarks Display Setting RateLock SettingLock Remarks Press Setting RelaysPresets Analog Output Output WiringAlarms Description Analog Output OptionInterface Card RS 232/422 Operation Unit will Recognize a Decimal if ONE is Serial Input CommandsPlaced in ANY of These Data Values †THE Unit will only Recognize the Last FivePrinter Hookup DP -9 Connector ComputerComputer Hookup Problem Possible Causes Solutions Troubleshooting GuidePage Page Page WARRANTY/DISCLAIMER Temperature