Electronics AC-24 Manuale Utente

Instruction Manual MagnaValve Amperage Controller Model AC-24 Control IM:0078 Revision: D Date: 1/11/2008 Made in the USA Electronics Inc. 56790

10 shot flow rate. This can be caused by inadequate sizing of the openings in the shot hopper or contamination (blockage) either above or below the

11 I. Note: The above procedure only works because the servo is turned off. In this mode the setpoint sets the output manually and ignores the moto

12 Black switches toggle sequence Yellow switches require up/down ▲▼ FIGURE 1: FRONT PANEL (Operator Controls) 1-2 1-3 1-5 1-6 1-7 1-11 1-9 1-8 1-

13 FIGURE 2: FRONT PANEL (Technical Adjustments) 2-15 2-14 2-13 2-16 2-17 2-22 2-27 2-19 2-18 2-21 2-20 2-28 2-29 2-30 2-25 2-26 2-23 2-24 2-13 Ma

14 Tables for Calculating Flow in Pounds/minute Set Point Knob Wheel RPM 1750 Wheel RPM 2400 0% 10% 20% 30% 40% 50% 60

15 Motor Information Motor Horse Power HP Motor Full Load Amps Wheel Size (diameter) Wheel Speed (RPM) Requested motor Amps Control an

16 16. HOW TO RETURN CONTROLLERS FOR REPAIR Remove terminal blocks and leave wires attached. Remove Rails and Rail Mounting Screws. Slide control

2 Table of Contents PRODUCT DESCRIPTION 3 THEORY OF OPERATION 3 PRELIMINARY ADJUSTMENTS 3 OPERATION 4 STABILITY ADJUSTMENT 6 MOTOR AMPS FULL S

3 1. PRODUCT DESCRIPTION The Model AC-24 Amperage Controller is used with wheel-type shot peening and blast clean-ing machines to measure and contr

4 I. To set the alarm bandwidth push (1-4) and ▼ or ▲. The alarm bandwidth is relative to this value and is centered at the setpoint command. Typic

5 ting. For example: for an alarm band of 5 Amps and a setpoint of 30 Amps will have alarms set at 25 and 35 amps. Moving the setpoint to 45 Amps wi

6 K. CALIBRATION SPAN AND ZERO 1. The digital display (1-1) should show zero when the motor is turned off. If it does not show zero then push the

7 E. Use the Display Range Fine button (2-29) for slower adjustment speed. 8. MOTOR AMPS CALIBRATION A. The factory calibration of input span s

8 8. Adjust the setpoint command to 100%. The red LED bar graph will be fully on (all 10 elements on) and the MagnaValve will be in its maximum flo

9 E. Motor amps are erratic or unstable. 1. New installations - refer to servo adjustments. 2. Old installations - machine worked fine until rece