Hardy HI 1769-FC User Manual

Page 42

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37

Chapter 4

Parameter B

Batch amount

The batch amount and preact parameters are used when operating in Batch mode. The
Batch Amount sets the amount of ingredient in weight units used per batch for the
selected ingredient.

Range: > 0.0 (default 0.0) It is not necessary to enter 0.00 for these parameters) The
decimal point is positioned based on the Weight Decimal parameter for batch amount.

Parameter C

Preact

Preact is used when operating in Batch mode. It is the amount to allow between the batch
amount signal and the time when the feeder actually stops feeding. Where the feeder
slows to a stop, set the preact value so the desired batch amount is dispensed when the
feeder stops completely. The decimal point is positioned based on the Weight Decimal
parameter for preact. No limits.

Range: >0.0 (default 0.0) No limits.

Parameter D

Mode

You can operate either in continuous or batch mode depending on the process.

Range: 0=continuous or 1=batch.

Parameter E

Prime Time

The time in seconds it takes to get the system up to full flow for the first calibration point.
on the first test OP% run of the rate calibration, the feeder must prime the feeding system
and the feeding system must smoothly feed product at an OP % selected rate.

Range: 1-999 (default 5 sec) Must be > or = 0

Parameter F

Pause Time

This is the time you want the feeder to wait between Auto Rate Calibration cycles. If
necessary, more material may be added to the feeder. Note that this parameter should be
set long enough to allow the operator to trigger a "hold" in between feed runs.

We recommend that you make the Pause Time equal to or greater than the Timebase
value you entered for the ROC.

NOTE

If a feeder is manually paused before a cycle starts or during a cycle, when the test is
restarted it will run from the beginning.

Parameter 10 Feed Time

Feed Time is the test duration at each rate. Set to the greater of four times the ROC time
base or 20 seconds. Make sure that your feeder hopper holds enough product to complete
the high percentage rate test. You cannot pause or refill during a test phase.

Must be > 0. Range: 1-999

Parameter 13-18

Refills

Automatic Refill uses user-selectable refill points to signal a start or stop of the refill
process without interrupting the feed process. HI and LO alarms can be used to flag a
refill failure.

Force/Manual refill allows for refill at any time. The refill stops at the Refill High stop
weight.

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