Gravimetric Batch Blenders w/Mitsubishi Control Chapter 3: Installation 53
• Calibration Error, Clean out hopper and check calibration: This alarm indicates
that the maximum empty weight for the weigh hopper has been exceeded. The blender
will automatically tare up to 0.25 lbs of material, but if this weight is exceeded, then an
alarm will appear. This alarm is most commonly caused by a build up of sticky
material in the weigh hopper and can be corrected by simply cleaning out the weigh
hopper. If this does not correct the problem, then the scale calibration should be
checked by maintenance.
• Power Interruption while metering a Batch: This alarm indicates that the blender’s
power was turned off while the blender was making a batch. The batch accuracy is not
affected as long as the blender is configured for “AutoStart.” The blender will finish
the last batch accurately even if the material was dumped into the mixer when the
power was turned off.
• PLC Battery Low: PLC battery is low and may cause the blender to lose both the
program and the blender configuration. Notify Maintenance immediately.
• PLC Module Loaded: This alarm occurs after a software upgrade to the PLC. The
alarm instructs you to turn off power to the blender, remove the Memory Module, turn
on power, and then reconfigure the blender parameters.
• Blender Powered On/Off: These are only logged in the Alarm Log and does not
cause a pop-up message or audible alarm. Each time the blender is powered on or off,
the time and day is logged to the Alarm Log.
CALIBRATION ERROR
Clean out hopper
and check
POWER INTERRUPTION
While metering a
Batch
PLC BATTERY LOW
PLC MODULE LOADED
