X5 AC Drive User’s Manual
Chapter 5: Operation and Programming
DPD00089A
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56 -
© 2009 Vacon Incorporated All Rights Reserved
5.8.2 Setting up the Keeper Function
To set up the Keeper function, follow these steps:
1. Make the Keeper parameters visible by changing parameter
150
(Show Clock Parameters)
to a value of
Yes
.
2. Make sure that the correct date and time are displayed in
parameters
120 (Today’s Date)
and
121 (Today’s Time)
.
3. Choose which analog input channel will be used as the input signal to the Keeper. Set up the
analog input channel for the proper analog input configuration. Note that you can also set up
an input from an encoder as the input to the Keeper function.
380 (Keeper Input Cfg)
to the value that is the input signal you chose
for the Keeper function.
5. Choose the units to be used by the Keeper by changing
389 (Keeper Units)
to the
desired units. The default is
GPM
; if you want that unit, you can skip this step. If the option
for units is not available, you can choose to program the engineering units of the drive as the
units of the input function. Do this by selecting
User Units
for the
Keeper Units
805 (Display Units)
to the text you want.
6. Modify
381 (Keeper Max Scale)
to the value to be displayed with the analog input
sensor is at its maximum value. For example, if you are using a 4-20 mA sensor and it
produces an output of 0-1000 GPM, then you should configure the analog input to 4-20 mA
and set parameter
381
to a value of 1000. This value should represent the maximum of your
sensor.
7. Verify that the Keeper input signal is scaled correctly. Do this through
385
(Keeper Input)
. This parameter should be displaying the value the sensor is outputting.
Make sure that this value has been scaled correctly.
8. Configure the times that the Keeper will save data. To do this, decide whether you want the
Keeper to save data once, twice, or three times a day. Program this choice into
parameter
384 (Keeper Save Rate)
. If you want the Keeper to save data once a day, select
24 hour
.
Twice a day would be
12 hour
; three times a day would be
8 hour
.
9. Program the
that the Keeper will save data. Do this by programming a time value
382 (Keeper Save Time)
. The Keeper will save the total value of the
processed variable every 8 or 12 or 24 hours, depending on your selection in
Keeper Save
Rate
.
10. Now program the rate of the input variable using
parameter
386 (Keeper Time Rate)
. The
selection of this parameter should be made based on the units you are accumulating. For
example, if you are pumping gallons per minute (GPM), program this parameter to
minute
.
If you are pumping liters per second, program
second
. The parameter should match the time
base of the units you are accumulating.
11. The Keeper is now set up and ready to collect data. The last step should be to reset the records
to be collected. Depending on the order of parameters programmed, you may have false data
in your initial records. To reset the records, navigate to
801 (Program Number)
and enter a value of 40. This will reset the Keeper records so that valid data can be collected.
The Keeper will collect data until the first save time that you have programmed into the drive.
