1
Download Positioning ACU
Transcript
Operation mode 23: Homing to left falling edge of home switch without encoder ref. signal with positive hardware limit switch Dest.: A Falling left edge of home switch Home switch active 0 Search direction Positive direction Speed (before reversal of direction of rotation) Fast Speed 1132 Condition Rising edge reversal of direction of rotation home switch Speed (after reversal of direction of rotation) Creep Speed 1133 Home switch active 1 Search direction Negative direction Speed Creep Speed 1133 Home switch active 0 Search direction Positive direction Speed (before reversal of direction of rotation) Fast Speed 1132 Condition Rising edge reversal of direction of rotation positive HW limit switch Speed (after reversal of direction of rotation) Fast Speed 1132 Condition Rising edge speed change home switch Speed (after speed change) Creep Speed 1133 B C vf A 23 23 B vc vc vf C 23 vc vf Home Switch Pos. HW Limit Switch A: Homing direction (search direction) is clockwise toward positive HW limit switch if home switch and limit switch are inactive. The home switch is in search direction. Travel to rising edge of home switch is performed at Fast Speed 1132. When the home switch is reached, the direction of rotation is reversed. Home position is the falling edge of the home switch. Search for the home position is performed at Creep Speed 1133. B: When homing is started, the home switch is active. Homing direction (search direction) is anticlockwise toward negative HW limit switch. Home position is the falling edge of the home switch. Search for the home position is performed at Creep Speed 1133. C: Homing direction (search direction) is clockwise toward positive HW limit switch. The home switch is not in search direction. The positive limit switch acts as a reversing switch. When the positive limit switch is reached, the direction of rotation is reversed, and homing is performed in negative direction. Travel to rising (right) edge of home switch signal is performed at Fast Speed 1132. Home position is the falling edge of the home switch. Search for the home position is performed at Creep Speed 1133. 142 Application manual Positioning 04/08
