Electronics 500-24 - Manual (Page 5)

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Valve Pulse – This is the rate at which the
valve dispenses shot, similar to a heart
beat rate. It is factory set to match the best
flow characteristics of the media (cast steel,
cut wire or micro-bead). Typical operation
is set at 8 Hertz .
Gain – This section controls the
amplification or gain of the sensor
signal. It has been factory set (see
label for flow range). If the gain is
changed it will be necessary to run
a one minute catch and weigh
test to confirm the calibration. The
full scale output signal is set to 10
Vdc for kg calibration.
Note: be sure only one gain switch
is selected (up position). Use the
“Gain Adjust” for fine adjustments.
EI also offers an exchange calibra-
tion service. Contact the factory for
more information.
Test Socket – This socket provides
access to diagnostic voltages.
0-10 Vdc input
0-10 Vdc output
24 Vdc “Enable” input
6-20 Hertz pulse rate
0 Vdc common
Diagnostic LED’s
VALVE ON – This LED is on when power is sent to the electromagnet. When the LED is off the permanent magnets
will hold or block the shot flow. When the LED is on the valve is on for full capacity flow rate. When the LED is blink-
ing then the shot flow is being regulated.
Vin > 0.25 Vdc-
This LED indicates that an analog signal input greater than 0.25 Vdc has been received. When this
LED is off there is no media flow allowed. The input signal range is 0-10 Vdc. At 10 Vdc the valve will “open” to full
capacity which is usually 25% to 50% higher than the calibrated range. The relationship between the 0-10 Vdc input
signal and actual flow rate is non-linear. The output signal 0-10 Vdc signal is linear and this makes accurate regula-
tion by the FC-24 control possible.
24 Vdc ENABLE –
This LED indicates that the 24 Vdc Enable signal has been received. When this LED is off then
the valve is inhibited, no shot will flow. This feature is provided as an on-off action so that you do not have to disable
or remove the 0-10 Vdc input signal.
24 Vdc Power –
This LED indicates that 24 Vdc is available to operate the electromagnets for media flow. It should
always be available and able to supply 4 Amps.
All of the LED’s must be on in order to have media flow.
Zero – turn adjustment until both
LED’s are OFF. This will set the
output signal to zero ± .050 Vdc
during no-flow.