User guide

TrueFeed manual
33
EX hopper loader (support frame for external hopper loader)
 Highlighted Parameters are factory settings.
Output signals
During fill time there will be a 24VDC signal between connection 24 and 25 on the main board to activate the
pneumatic solenoid valve.
When the Fill Alarm is activated there will be a 24VDC signal between connection 22 and 23 on the main board
to activate the alarm light. The control itself sounds a beeping signal and the alarm LED will be illuminated.
GENERAL RECOMMENDATIONS FOR OPTIMAL HOPPER FILLING
To guarantee the optimal performance of the TrueFeed, it is important to use the correct rate of hopper filling.
The higher the output of the feeder, the more important becomes the rate of hopper filling.
During hopper filling, the electronics of the TrueFeed control senses automatically that the hopper is being
filled. This automatic filling detection is used for both the manual filling of the hopper and
filling with an
automatic hopper loader.
During the time that the hopper is being filled, the TrueFeed is feeding with a fixed RPM. This means the unit
runs temporarily volumetric. As soon as the hopper filling is complete, the TrueFeed immediately reverts to
working gravimetric.
Because the TrueFeed is working volumetrically during hopper filling, Conair recommends reducing the
amount of filling cycles, by having the maximum time between a filling cycle and the next filling cycle. This can
be performed when using the correct settings for the “Filling start level” and the “Filling stop level”.
When the unit is started with the auto start function enabled and the unit is turned OFF and then ON again,
filling will start automatically if the hopper weight is too low.
Recommended settings for ME hopper loader:
EX FILLING SYSTEM
EX system : OFF/ON
EX alarm time : 31 sec
EX alarm mode : OFF/ON
Manual fill : NO/YES
Filling start level
The moment when the automatic filling starts depends on the
entered start level:
Filling start: xxx gr. (CONFIGURATIONS menu)
Filling stop level
Filling stop level is determined by the entered fill time for the
ME-system:
Fill time: xxx sec
For the MV-system:
Fill time: xxx sec
Empty time: xx sec
Fill cycle: …. x
(Hopper Loader menu)
Sight glasses
EX system: Switch ON / OFF the Support frame system.
Alarm time: Fill Alarm [sec.], if the hopper weight is not above the filling start level within this
time, an alarm will activate.
Alarm mode: EX hopper loader is ON / OFF during fill alarm.
ON = The system stays activated during a filling alarm.
OFF = The system will be deactivated during a filling alarm.
Manual fill:
Yes = starting filling immediately; No = stop filling immediately
Only visible with the control in STOP mode.
The manual fill function can be used to fill the hopper before the start of
production, for example.