Razorgage Cyclone RazorOptimal, User Manual

Page: 54 / 55

Cyclone RazorOptimal User Manual
54 | P a g e
Technical Services, Inc.
Troubleshooting E-Stop Faults with Safety Switches Reset
An E-Stop circuit is a hard-wired system intended to drop power and air whenever any component in the
E-Stop circuit changes from closed to open. This circuit cannot rely on software to drop power and air
yet it is helpful if the software informs the user that an E-Stop condition is present. On RazorGage
systems we use two normally unused pins on one of the serial communication connectors to trigger a
software event that we use to display the E-Stop screen. If your system randomly displays E-Stop
screens even though all guard interlocks are closed, air pressure is present, and all E-Stop switches are
disengaged then it is possible that the software E-Stop circuit is compromised. The software E-Stop
circuit comprises two wires that go from the Master Control Relay to the DB-9 connector that is on the
PC end of the PLC communication cable. To troubleshoot this potential problem, disconnect all power to
the RazorGage using your company’s lock-out / tag-out procedure then open the door on the PLC
enclosure. This is the enclosure to which the touch screen monitor is mounted. The pictures on the
following pages will lead you through the troubleshooting process. Your enclosure may vary from the
one shown in the photos but the basic components and methods will be the same.