Eagle Microsystems VF100 - Manual (Page 8)

SERIES VF-100 SCREW FEEDER
7
the SCR, start the motor and check the rotation again. Once the rotation has been
proven to be correct and the screw is fully secured to the drive shaft, you are ready to
fill the hopper with material.
B. DETERMINE ACTUAL FEED RATES:
Actual feed rates vary in accordance with material density, material flow
characteristics and ambient environmental influences. For accurate results it is
important that you determine the actual feed rates you can expect at different settings
of the speed potentiometer and, in the case of a feeder equipped with the remote
analog speed control option, different control input levels. This is best accomplished
with an accurate portable scale and a timing device. Recording the weight of material
fed over a reasonable period of time at various settings will allow you to develop a
very accurate feed rate table for your particular conditions.
C. OPERATION:
The basic VF-100 controller consists of the following controls:
1 POWER ON/OFF SWITCH: Switches main power to
the controller, feeder drive motor and any optional
device powered from the controller.
2 FEEDER MANUAL/OFF/REMOTE SWITCH: The "MANUAL"
setting allows local operation of the feeder drive motor
via the controller mounted speed dial. The "OFF" setting
disconnects power to the feeder drive motor. The “REMOTE"
setting allows the feeder to start/stop from a remote RELAY contact supplied by
the customer.
3 FEEDER SPEED DIAL: Controls feeder speed as a percentage of full rated speed.
POWER
ON
OFF
60 40
FEEDER
AUTO
MANUAL
OFF
0
20
30
10
100
70
90
80
50
FEEDER SPEED