User guide

AccuMeter Controller Chapter 11: Configuring a new PLC 75
ALARM PAGE Tab
• NO FLOW ALARM ENABLED/DISABLED. This alarm is generated if the blender is
running and the extruder is not taking material away. This could happen if a bridge forms
directly over the feed throat.
• NO FLOW TIME (SECONDS). This is the sample time that is used to determine if a NO
FLOW condition exist. Entering “0” will disable the alarm.
• NO FLOW BITS. This is the number of weight bits that must pass during the NO FLOW
TIME (SECONDS) in order for the system to determine that there is flow.
• CANNOT ACHIEVE RATE ALARM ENABLED/DISABLED. This alarm should remain
disabled and will be removed in future versions. The NO MATERIAL alarm will supersede
this alarm.
• NO MATERIAL ALARM ENABLED/DISABLED. This alarm is generated if the mass flow’s
weight is every below the EMPTY % (Hopper Setup Tab). When you first start the blender
there is a 30 second delay to allow the blender to get primed.
• LOADCELL ALARM ENABLED/DISABLED. This alarm occurs if either the loadcell is
disconnected or is mechanically negative sprung (reading negative). If you disconnect a
loadcell the CURRENT BITS (Calibrate Scale page) will go to 32767. This alarm will not
detect a non-linear or damaged loadcell and is not intended to replace standard scale calibration
and testing procedures.