CONTROLLED AUTOMATION, INC.

BEAMLINE

2 SPEED HYDRAULIC FRAME POSITIONING

The punch frames use a high-speed/low-speed hydraulic valve assembly for gauge positioning of the frames. Both high-speed and low-speed valves (same direction) will turn on to move the frame in the high-speed mode. When the frame moves to within a certain distance (slow position constant) of the final position (gauge of hole or mark), the high-speed valve will turn off. The low-speed will stay on until the frame reaches the final position. After the low-speed turns off, the computer checks that it is still at the final position. If it is not, the frame will reposition.

The frame should move fairly fast in the high-speed mode, switch to the low-speed mode smoothly, and then stop at the final position without overshooting and moving back in the other direction.

The high-speed and the low-speed valves have flow controls to adjust the speed of each direction. The diagnostics can be used to turn on each speed and direction for adjustment of these flow controls.

The slow position constants (SLOW POS & SLOW NEG) should be set to 1/4" to 3/8". If the slow position constants are any larger, the frame will be too slow moving into final position. If the slow position constants are any smaller, the frame will more than likely overshoot the final position and oscillate. On machines with gag punch frames, the slow position down constant may need to be larger than the slow position up constant due to the heavier weight of the punch frames. It may need more time and distance for the frame to slow down and stop.