Hot stamp Rollers

The past week has had our team busy in many areas one of which has been working with the hot stamp roller machines. All of which have needed extensive attention to get into reliable operating condition.

NOTES

A few notes I wanted to make are on the temperature controllers they utilize.  It is important to understand that the outputs must be allocated upon set up so that the SSD and Relay contacts are configured correctly ro work with the PLC controls.

Also be awarevthat the PLC will interupt the heat controls if the temperature controller settings are not correct in this application.

One way to verify this is to compare settings from another machine within the first three levels.

Also remember that to move up or down levels - "levl" must be flashing after the ↑↓ buttons have been held down for three seconds.

Hot stamp issue

Ran into a problem with the temperatures not working correctly on the hot stamp (HS3). Heater circuit was good so I looked at the temp settings on the controller.

I am not sure how the PID values were changed but apparently they had all been set to the maximum allowable value for each parameter (62578)?

 To fix the problem we looked at one of the other hot stamps to find a reasonable value to input and changed them to match the other properly functioning hot stamp.

We also removed the offset from 90 to 0 so the controller would bring the heat temperature back to set point.

The upper limit is now set at 420, lower limit at 390, and set the temperature for 400. It is now functioning correctly and staying on set point.

It may be possible that the PID values were lost during a past battery change or similar resetting circumstance. This should be something to examine at future battery changes or when similar heat problems occur.