Electronics FC - Manual (Page 9)

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13. MAINTENANCE: There is no maintenance required for the FC controller other than calibration
tests as needed by user.
14. FIGURE 1 FRONT PANEL (Operator Controls)
ITEM
DESCRIPTION
1.
AUTO-ZERO - This LED indicator is on when the Auto-Zero function is forcing the display to
zero. The valve “Enable” must be off for this function to operate. The Auto-Zero may be dis-
abled, see figure 2.
2. ENABLE - This LED indicator will be on if the mode switch is "on" or "ready" and the costumer
applies 115VAC to Terminal #3 (control enable).
3. VALVE - This LED indicator shows power output to the MagnaValve at a fixed 8 Hertz rate and
variable duty cycle.
4. DIGITAL DISPLAY - Indicates the shot flow rate. Pushing the Display Switch (1-11) to the right
displays the set point command instead of the flow rate. Pushing the display switch to the left
displays the ± alarm bandwidth.
5. HIGH ALARM - This LED indicator will be on when the control is enabled and if the flow rate is
more than the high alarm trip point. It gets brighter at the expiration of alarm time delay and the
high alarm relay contact will close.
6. LOW ALARM - This LED indicator will be on when the control is enabled and if flow rate is less
than the low alarm trip point. It gets brighter at expiration of the alarm time delay and the low
alarm relay contact will close.
7. LOCAL - This LED indicator shows that the control is in the local mode and the set point knob
below it will command the shot flow rate. When this indicator is on the remote mode indicator is
off.
8. REMOTE - This LED indicator shows that the control is in the remote mode and a remote ana-
log 0-10 Vdc command is expected at terminal #10. The Set point knob is not active when the
remote LED is on.
9. SETPOINT KNOB - This knob will set the desired shot flow rate and the midpoint of the alarm
bandwidth when the control is in local mode (local LED indicator must be on). Push Display
Switch to the right to display the set point.
10. DISPLAY SWITCH - Push to the left to read the alarm bandwidth. Push to the right to read set
point command. When in the center the flow rate (lbs./min or amps) is displayed.
11. MODE SWITCH - This switch determines the controller mode of operation.
Right = Forced on
Middle = Forced off
Left = Ready (waiting for 115VAC "Enable” signal from machine at terminal #3)
12. DECAL - Model Number is shown on this decal. Space is provided for customer annotation.