Orn Jonsson
Member
Hi all. I have a small battery powered high speed spooling machine which keeps faulting my KOYO DL05 PLC CPU (No error code just red CPU light.
The System runs off 2 12V batteries and has a D0-05DD-D PLC with a 4 channel (2in 2 out) 5V Analog card. The Analog card reads a 0-5 V signal (LM7805) coming from a dancer arm and adjusts the analog output accordingly to control a DC-DC PWM Drive (KBBC-24M40) which runs the 24V Spool motor. We are using C-more touch screen for an HMI. Every so often, the PLC CPU will shut down and the machine goes dead. Also I have had problems staying on line with the PLC on this machine.
Could the DC drive be introducing enough noice into the system to randomly fault the PLC?
Is there a way to "filter" the electrical noise out of the system?
The machine requires mobility and is therefore ungrounded.
Thanks,
The System runs off 2 12V batteries and has a D0-05DD-D PLC with a 4 channel (2in 2 out) 5V Analog card. The Analog card reads a 0-5 V signal (LM7805) coming from a dancer arm and adjusts the analog output accordingly to control a DC-DC PWM Drive (KBBC-24M40) which runs the 24V Spool motor. We are using C-more touch screen for an HMI. Every so often, the PLC CPU will shut down and the machine goes dead. Also I have had problems staying on line with the PLC on this machine.
Could the DC drive be introducing enough noice into the system to randomly fault the PLC?
Is there a way to "filter" the electrical noise out of the system?
The machine requires mobility and is therefore ungrounded.
Thanks,