Industry Online Support
Technical Forum
12/10/2009 11:33 AM | |
Posts: 81 Rating: (2) |
Dear Sir/Madam, I had recently come across a safe cng compressor model 560, which needed to be modified to release the gas inside the stages of the compressor. It is being controlled using a 313C and operated by an OP77A. I backed up image of the OP77A & the CPU program as well. However I have not been able to bypass the safety for empty pressure that always trips. one has to manually press the ACK button in the OP77A and then continue with working the compressor. I am attaching the PLC program, Kindly Advise.. Note: M9.1 needs to be SET in order for the machine to work, when the alarm trips M9.1ref:FC4, NW2,NW4also resets, I had manually set it using FC2 I125.4. However an acknowledge button has to be pressed to clear the alarm, kindly let me know if there is a way to bypass the acknowledge button. Attachmentmeher_cn.zip (102 Downloads) |