Wondering if anyone can suggest a way to help. We have an RPM value being registered. Only issue is that it “bounces” +/-4 (ish). So we set the deadband to 5. The only issues is when the machine goes to shutdown if the downward values come down and hit 3 or lower when read then the deadband prevents up from getting a 0 value there when the motor is stopped. Any suggestions?
If the RPM are a floating value in the PLC, can you add logic so that if the RPM is less than 5, move a 0 to the float?
If you must do it in the HMI (I prefer @robb’s solution if possible), you can move aside your current
RPM tag that is bringing in the value (with the deadband) to
RPM_Signal and then create an expression tag
RPM with something like:
Then the new
RPM tag will show
0 for values below 5 (i.e. when
RPM_Signal is “stuck” at 3).