Electronics MC User Manual

Installation Manual

Signature________________________

Model MC Shot Flow Controller

Made In America

Electronics Incorporated

56790 Magnetic Drive

Mishawaka, IN 46545

1-800-832-5653 (Toll Free)

1-574-256-5001 (Phone)

1-574-256-5222 (Fax)

E-mail: [e-mail]

Website: http://www.shotpeener.com

Doc Title MC Installation Manual
P/N: 999235.C
Date: ___________________________

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TABLE OF CONTENTS

1.PRODUCT DESCRIPTION..........................................................2

2.THEORY OF OPERATION..........................................................2

3.PRELIMINARY ADJUSTMENTS................................................2

4.OPERATION ................................................................................2

5.SPARE PARTS LIST.....................................................................2

6.WARRANTY ................................................................................3

7.SERVICE/START-UP ASSISTANCE..........................................3

8.UPGRADES - REVISIONS ..........................................................3

9.TROUBLESHOOTING GUIDE....................................................3

FIGURE 1. FRONT PANEL (Operator Controls)...........................6

FIGURE 2. FRONT PANEL (Technician Adjustments) ...................7

FIGURE 3. FRONT PANEL (Factory Settings)...............................8

FIGURE 4. TEST SOCKET PIN ASSIGNMENTS.........................9

FIGURE 5. WIRING CONNECTIONS........................................10

FIGURE 6. SPECIFICATIONS.....................................................10

10. How To Return Controllers For repair………………………12

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1. PRODUCT DESCRIPTION

The Model MC Shot Flow Controller will control the rate of flow of steel shot passing through a special
normally closed magnetic valve called a MagnaValve. A setpoint knob or an external 0-10 Volt dc
command signal is used to set the shot flow rate.

2. THEORY OF OPERATION

The MagnaValve is a normally closed magnetically operated valve with no moving parts. An
electromagnet coil inside of the valve is used to cancel the permanent magnet field and allow shot to
flow. The MC controller supplies the voltage to the MagnaValve and provides 0-100% regulation of
flow rate.

3. PRELIMINARY ADJUSTMENTS

(For location of adjustments see (Figure-Item) as noted.)

Maximum Output Limit:
On wheel type blast machines it is usually desirable to limit the maximum motor amps by restricting the
maximum shot flow rate to the wheel. The maximum output signal from the MC controller may be
restricted to prevent excessive flow rates that might overload the wheel motor. Remove the front panel
lower cover plate for access to the adjustments. Turn the maximum output trimpot to the counter­clockwise position for minimum range. Turn the setpoint knob to full clockwise position. Enable the
controller. Turn the maximum output trimpot until the desired maximum flow rate is achieved.

4. OPERATION

To energize the MagnaValve the MC controller must be enabled. This can be done with the mode
switch (1-5) by placing it into the ON position or by placing the mode switch into the READY position
and applying a 120 Vac to the ENABLE screw terminal #3. The LED labeled "Enable" will indicate
that the enable signal is present (1-1).

The flow rate command can come from the front panel local setpoint knob or a remote 0-10 Vdc
command. The LED's (1 - 3) and (1 - 4) indicates which command is active. Switch (2 - 1) is used to
select local or remote command. The remote analog command is applied at screw terminal #10 with
common at screw terminal #9.

A red LED (1 - 2) is provided to indicate status of the output signal to the MagnaValve. It will be off
for no-flow, blinking for low flow rates and constantly on for maximum flow rate. The signal is a fixed
frequency variable duty cycle (PWM) type of output. Longer "on" times provide larger flow rates.

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5. SPARE PARTS LIST

For each machine, at least one of each of the following is recommended:

a. Spare MC Control
c. Spare MagnaValve

6. WARRANTY

Electronics Incorporated warrants this product to be free from defect in material and workmanship for a
period of two years from date of shipment. Defective units must be returned to Electronics
Incorporated with shipping costs prepaid. Call for a Return Authorization Number and shipping
instructions. Electronics Incorporated will repair or replace defective unit at its option. No
consequential liability is assumed. No other warranty, including merchantability or fitness for purpose,
applies or is expressed or implied.

Warranty work is only available at the factory. On-site service or start-up assistance is available at
extra cost to customer. See Section VII.

Caution: Any customer attempts to modify or repair the product during the warranty period will
terminate the warranty. Standard technician labor rates will be quoted prior to repair work.

7. SERVICE/START-UP ASSISTANCE

Service is an option available at the time of original purchase or as required by customer. A purchase
order is required prior to making a service call.

8. UPGRADES - REVISIONS

Design improvements are constantly being made to our products. Please contact Electronics
Incorporated for details. When ordering spare units, please refer to model number and serial number of
each unit.

9. TROUBLESHOOTING GUIDE (WHEEL TYPE BLAST MACHINES)

1. SYMPTOM: Problems with stability
If the machine uses a variable speed drive, check it for stability or bypass it with a conventional
motor starter.

The instability may be caused by flooding/choking the wheel or trying to flow more shot than the
capability of the wheel. Check for obstructions or restrictions or unnecessary bends in the flow path.
Worn blades or damaged control cages will not pass as much shot as new blades, therefore as blades
wear the maximum shot flow rate is reduced.

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