Weighing Applications

Material Feed Control by Rate (LOW)

Typically deployed in two manufacturing areas: MAKE (batching and blending) or PACK (dispensing). It is used in “loss of weight” applications, usually abbreviated to LOW. This terminology is used to help differentiate this application from the LIW application above. Control functionality included for this application include: a setpoint for rate control; automatic refill cycle; rate of change exception to eliminate upsets.

Hardy has multiple products that can be installed to manage this application in different ways:

HI1769-FC (PLC plug-in feeder control module that includes integrated rate control function)
HI1756-FC (PLC plug-in feeder control module that includes integrated rate control function)
HI4060 (instrument, includes integrated rate control function)
Any Hardy PLC plug-in weigh scale module or Hardy instrument IF rate control functionality is executed in a PLC

Material Feed Control by Rate (LOW)

Products for Material Feed Control by Rate (LOW)

HI1756 - ControlLogix® Weight Scale Module

HI1769 - CompactLogix® Weight Scale Module

HI4060 - Loss-In-Weight Closed Loop Rate Controller