Instruction Manual MagnaValve Shot Flow Controller Electronics Inc. 56790 Magnetic Drive Mishawaka, Indiana 46545 1-800-832-5653 (Toll Free) Phone: 1-574-256-5001 Fax: 1-574-256-5222 E-mail: sales@electronics-inc.com Made in the USA Website: www.electronics-inc.
Table of Contents PRODUCT DESCRIPTION 3 THEORY OF OPERATION 3 LOCATION OF ADJUSTMENTS 3 PRELIMINARY ADJUSTMENTS 3 CALIBRATION 4 OPERATION 4 STABILITY ADJUSTMENTS 5 SPARE PARTS LISTS 6 TROUBLE-SHOOTING GUIDE 6 MAINTENANCE 7 Figure 1 Upper Front Panel 8 Figure 2 Lower Front Panel 9 SPECIFICATIONS 10 WIRING CONNECTIONS 10 HOW TO RETURN CONTROLLERS FOR REPAIR 12 2
1.PRODUCT DESCRIPTION The Model FC-24 Shot Flow Controller will measure and control the rate of flow of steel shot passing through a special normally closed magnetic valve called a MagnaValve. A digital display is provided for indications of shot flow rate. A 0-10 Volt dc output signal representing flow rate is available for remote indication or strip-chart recording. High and low alarms are set to bracket the requested shot flow rate.
D. For automatic machine cycle, push the “Mode” button (2-22) until the “Ready” LED (1-6) is on. When a 24Vdc "Enable" signal is received the "On" LED indicator (1-7) will come on and activate the valve output. The bar graph display (2-13) will indicate the relative signal strength sent to the MagnaValve. Adjust the flow rate setpoint with button (1-8) and ▲or ▼ buttons to the desired flow rate. The display is usually scaled in pounds/minute, but may be scaled in Kg/minute. E.
G. H. I. J. K. L. Changing the set point to 15 would change the alarm trigger points to 14 and 16 pounds/ minute automatically. The alarm bandwidth of ±1 stays fixed until the alarm bandwidth is changed. If the Alarm Mode is set for percent of point (PT) as indicated by LED (2-15) then, with 5% of point mode the alarm band diminishes as the flow setpoint is reduced. For a full scale range of 20 lb/min and a setpoint setting of 20 lb/min the alarms will activate at ± 1.0 lb/ min.
display reads the desired value. Since the control is in manual mode, an unstable flow rate indicates that the machine itself is causing the problem, not the servo adjustments (the servo is off). 8.SPARE PARTS LIST There are no spare parts for the FC-24 controller. It is recommended that a spare controller be purchased or the controller be sent to Electronics Inc. for repair service. 9.TROUBLE-SHOOTING GUIDE A. SYMPTOM: Unstable operation.
E. SYMPTOM: High flow alarm or flow continues when set point is reduced or Enable is turned off. The MagnaValve is leaking shot. This is usually caused by a pressure difference above and below the valve. Direct pressure air blast systems: The boost air pressure must be equal to the pressure vessel pressure. Gravity fed (suction) air blast systems: The suction induced by some venturi nozzles is quite large. Be sure there is a large (1/2") aspiration air inlet near the bottom of the MagnaValve.
FIGURE 1: FRONT PANEL (Operator Controls) 1-12 1-11 1-1 1-10 1-2 1-9 1-3 1-8 1-4 1-5 1-7 1-6 Black switches toggle sequence Yellow switches require up/down ▲▼ FRONT PANEL (upper portion) (1-1) Digital Display (1-7) Mode status “On” LED (1-2) High Alarm LED (1-8) Setpoint button (1-3) Low Alarm LED (1-9) Remote Setpoint LED (1-4) Alarm Band button (1-10) Local Setpoint LED (1-5) Mode status “Off” LED (1-11) Decrement button ▼ (1-6) Mode status “Ready” LED (1-12) Increment but
FIGURE 2: FRONT PANEL (Technical Adjustments) 2-13 2-14 2-15 2-27 2-16 2-22 2-17 2-25 2-23 2-18 2-19 2-28 2-29 2-20 2-30 2-21 2-24 2-26 FRONT PANEL (lower portion with plate removed) 2-13 MagnaValve output signal level 2-22 Control Mode button 2-14 Alarm bandwidth % of full scale 2-23 Servo Gain button 2-15 Alarm bandwidth % of setpoint 2-24 Servo Speed button 2-16 Alarm mode button 2-25 Span button for amperage calibrate 2-17 Alarm delay button 2-26 Zero button for zero amp
. MAINTENANCE Power: 24 Vdc @ 0.5 Amp Inputs: 0-5 A ac from current transformer loop Remote analog setpoint 0-10 Vdc Enable input 24 Vdc Alarm reset 24 Vdc Outputs: Servo output signal 0-10 Vdc Recorder Analog output 0-10 Vdc Alarm relay contacts (rated at 120 Vac @ 0.5 Amp) Enable output signal 24 Vdc Weight: Display range: Decimal Points: 2.2 pounds / 1 Kg 0-1999 1000, 100.0, 10.
11. SPECIFICATIONS 1 2 Installed in panel. Turn “Off” all power sources to controller before going to step 2. Remove terminal blocks and leave wires attached. 3 4 Remove Rails and Rail Mounting Screws. Slide controller forwards. Slide Rails back on and install the Rail Mounting Screws. 5 6 Call 1-574-256-5001 ask for a Returns Goods (RG) Number (#) Ship controller with RG # to: Electronics Incorporated 56790 Magnetic Drive Mishawaka, IN 46545 Controller is ready to return. 12.
