Low back pressure in the supercharger case (0.37MPa), pump PY liter less than 18MPa, pump work balanced PY = PQ × k conditions are not met, it does not stop the pump work. The fault belongs to operator error, you should enter the working pressure pneumatic pump PQ reset, PQ = PY / k = 0.37MPa, you can work back to normal. Pneumatic presses set too high pump pressure, will bring 2:00 hazards:

1) The outer slider liquid hedge is too high, could easily lead to Changzhou vacuum equipment overload damage; 2) influence outside slider control BHF BHF too big punching scrapped parts.

<Single> stroke mode, "half-way stop" fault

Working Principle Analysis

Press <Single> trip way is that every time a work order, both inside and outside the slider back and forth to complete a job. Press <Single> travel mode, that every time a work order, press the spindle to die from stroke point at 0 ° of rotation, after acting on the dead return to 360 °. Every time a reciprocating motion, by the rotation angle of the programmable controller to accurately measure the angle to the master computer PLC, issued a running position information, PLC controlled presses, according to the set of process procedures, all aspects of coordinated motion. Angle of rotation program controller program diagram see increase reliability, using two sets of mechanical cam switches, channel number: SLIP and ALM, auxiliary rotation angle control box, complete the return and preventing single continuous stroke operation.

The schedule shows, Roots reciprocating pump unit 10 control channels (CLSC-11-CLSC-31) in the 0 ° -360 ° full stroke, the respective output switch information at different angles, enter the PLC microcomputer. Enter the address 00500-00513 PLC. Single stroke control: Press a single button after returning instruction, 03008ON, running to 180 ° later, by the CLSC-31 (180 ° -330 ° ON) 00501 ON input from holding and a controlled shutdown, over 330 °, the 03012 points OFF the 03013 point OFF, 01014 and 01015 points OFF, clutch, brake brake, while the stop signal to the 01100 address, the signal is fed back to the rotation angle of the program controller. Program controller will stop the rotation angle point angle and the angle of internal procedures set comparison, abnormal issue 00511ON (SLIP Brake monitoring fault) 01008ON lit by the "fault" lamp. Debugging, when <Single> stroke mode, faulty Parking: send a work order, both inside and outside the slider did not complete a full reciprocation, ie stop and issue a "fault stop" information. Not lead to press inside and outside the slider one complete reciprocation, advance stop.