conditioning chambers (onto which various size hoppers or chamber covers can be attached), or with an
integral one cubic foot supply hopper.
The standard variable speed drive for the Model 105 Series of Volumetric Feeders is DC, controlled by
an Acrison variable speed SCR controller. The Model 105 utilizes a 1/2 HP DC motor, the Model 105X is
furnished with a 3/4 HP DC motor, and the Model 105Z with a 1 HP DC motor. The standard DC motor is
totally enclosed.
Acrison offers a number of variable speed SCR/DC controller models for use with the Model 105 Series
of Volumetric Feeders. Depending upon the selected model controller, either a 30:1 or 50:1 drive
turndown ratio is provided, with a number of these controllers available with an assortment of optional
control functions. They are also capable of being furnished in an assortment of enclosures to suit the
specifics of a given application. Please refer to the selected SCR/DC controller Data Specifications for a
detailed description. Specific instructions relating to the variable speed controller are furnished separately.
2.2 Glossary
AC Motor —
An AC Motor is an alternating current motor, available as an optional motor to power the
feeder. AC Motors may be operated at a constant speed, without variable speed control, or may be
furnished with a variable frequency controller for variable speed control. Variable speed AC Motors
generally provide a 10:1 or 15:1 drive turndown ratio.
Conditioning (Feed) Chamber —
The all-steel Conditioning Chamber houses the Double Concentric
Metering Auger Mechanism. The supply hopper of the feeder attaches directly to the top flange of the
Conditioning Chamber. Model 105 Feeder Series Conditioning Chambers are designed without any type
of convergence that could prove detrimental to product flow and/or feed.
DC Motor —
A DC Motor is a direct current motor, selected as the standard drive motor for the Model
105 Series of Feeders because of its wide range variable speed characteristics, and ability to provide
very precise and reliable speed control/regulation. DC Motors can produce either a 30:1 or 50:1 drive
turndown ratio when used in conjunction with Acrison equipment.
Discharge Cylinder —
The Discharge Cylinder is the discharge spout of the feeder, within which the
metering auger rotates, and through which the metering auger discharges product.
Drive Isolation (Magnetic) Clutch —
The Drive Isolation Magnetic Clutch is a device mounted between
the feeder’s drive motor and gear-reducer that, when deactivated via a lockable switch, prevents the drive
motor from powering the feeder’s metering mechanism (typically used as a safety interlock).
Drive Motor —
The Drive Motor is the motor (AC or DC) that powers the feeder.
Gearbox —
The feeder’s Gearbox contains the gearing mechanism that provides the desired ratio of
speed differential between the smaller metering auger and the larger conditioning auger (Intromitter).
Gear-reducer —
The Gear-reducer reduces the motor speed to the desired speed entering the gearbox.
The Gear-reducer is available with one of several ratios, determined by product characteristics and
application parameters, and establishes the maximum speed of the metering auger and thus, its
maximum feed rate output capacity. The feeder’s drive motor flange-attaches to the Gear-reducer, and
the Gear-reducer flange-attaches to the feeder’s gearbox.
Intromitter (Conditioning Auger) —
The various Model 105 Series of Volumetric Feeders include
Acrison’s unique Double Concentric Auger Metering Mechanism, with the larger of the double augers
called the Intromitter (or Conditioning Auger). The Conditioning Auger (or Intromitter) is normally a
helically wound device but can also be provided in other configurations as well, based on the handling
characteristics of the product(s) being handled.
6
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