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Detailed Control Adjustment
Frequency Settings
The "Frequency" menu contains the portion of the menu
that controls the frequency settings. The frequency can
be adjusted from 30 to 140 Hz. The spring/mass ratio of
the hopper/table determines the natural vibrating
(resonate) frequency. The control output frequency
needs to be adjusted to match the natural frequency.
The control can be manually tuned or automatically
tuned.
The "Frequency Mode" setting selects either manual
frequency adjustment or auto tracking frequency
adjustment.
To manually find the resonate frequency of the bowl, set
the amplitude to approximately 30%. Then adjust the
frequency across its range. The hopper/table should be
expected to vibrate the parts at more than one spot
across the frequency range. The resonate frequency is
the frequency with the most vibration. Once the best
feeding frequency has been found, fine tune the
frequency for the best parts movement. To increase
feeder stability for parts load fluctuations, adjust the
frequency down by 0.2 or 0.3 Hz so that the feeder
becomes slightly over-tuned.
"Auto Scan" is used to find the resonate frequency of the
hopper/table. Once auto tracking has found the
resonate frequency, it can maintain resonate frequency
and amplitude of the feeder as the parts load changes.
The CFR sensor is needed in order for auto tracking to
operate, and "Auto Tracking" needs to be turned on
under both "Amplitude Source" and "Frequency Mode"
menus. To show when frequency "Auto Tracking" is
enabled, the normal display menu will show a bold "F".
When "=" is shown in bold, the control is locked onto the
resonate frequency of the feeder.
The minimum frequency limit can protect the feeder
from feeding at a low frequency if a spring or weld
breaks. The Min. or Max. frequency can block out
undesirable frequencies during Auto Scan.
Resonate Threshold Level
Resonate Threshold Level sets the minimum level of
vibration that the control considers as a resonate
condition. The setting should be reduced if an Auto
Scan cannot find the resonance frequency within two
scan attempts. Adjustment is not normally needed.
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AutoTrack Dead Band
Auto Track Dead Band controls how far the resonate
frequency of the vibratory feeder can deviate before the
output frequency of the control is adjusted to follow it.
Decreasing the setting narrows the range, and
increasing the settings makes the dead band range
larger before a reaction takes place. This setting
normally does not need to be changed.
Diagnostics
The first menu item under the diagnostic menu shows
the software revision level. The next four items under
the software revision level show certain software regis-
ters that may be helpful to Graco while troubleshooting
over the phone.
Security Settings
The Security menu contains the portion of the menu
that controls access to the program menu settings.
When enabled, the security code is a number from 000
to 999. The preset code is 123, but it can be changed by
user.
The control comes with the security setting Unlocked so
the control can be set up. The amplitude can be
adjusted from the normal operating display. Press and
hold Enter to enter the program menu and adjust the
software settings.
The amplitude only (Ampl. Only) adjustment allows
operators to adjust the amplitude through the normal
operating display, but not get to the program menu set-
tings without the security code.
The Lock setting locks the control from any adjustment
without the use of the security code. If the security code
has been forgotten, enter the security code #010, press
and hold Enter until entry has been granted.
NOTE: Ignore the "Wrong Security Code" message.
Once in the programming menu, be sure to set the
security code.
332462E
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