ID Technology 252, Operator / Technical Manual

Page: 21 / 164

Model 252
Label Printer/Applicator
Operators/Technical Manual
2
2. Unwind Assembly
The unwind assembly holds the roll of label stock and controls the tension of the web.
The unwind assembly consists of an unwind spindle on two sealed roller bearings, a
spring-loaded dancer arm and a brake mechanism. As the web pulls on the dancer arm,
the brake pressure is released and the roll is free to spin. When sufficient stock is fed, the
dancer returns to the rest position and the brake is reapplied.
3. Rewind Assembly
The sole purpose of the rewind is to accumulate the waste liner, keeping it from spooling
on the floor. There are no adjustments needed. The waste rewind is controlled by a v-
belt drive from the drive pulley. The drive pulley has a v-groove to provide positive
drive to the belt and the rewind roller has a flat bottom groove and relies on belt tension
and friction to spin the take up. Waste liner feed, used in conjunction with a tensioner
arm and dancer roller, controls the activation of the rewind belt.
4. Electronics Assembly
The electronics assembly contains the components that control the functionality of the
applicator, provide power to the various components, and connect to various sensors and
indicators.
4.1 Operator Interface
The operator interface is the primary means of operator control and feedback. Various
settings, such as speed and timing, are adjusted using the interface. The current machine
operating status is displayed upon demand by way of the interface.
4.2 PCB
The PCB is the heart of the controls for the applicator. The PCB runs a proprietary
control program written specifically for the Model 252 label printer/applicator. Timing
cycles, interaction with various sensors, indicators and motor controller, as well as
communications with the operator interface are all controlled by the PCB. Connections
for the control of standard and optional equipment are located on the PCB.
4.3 Main Power Connection
A power entry module with an “ON-OFF” switch is located on the rear panel of the
electronics module. Power for the entire label printer/applicator is provided through this
connector. A separate power supply for the PCB is contained within the electronics
module and a permanently attached power cord is used to provide power to the engine. A
power cord with the appropriate connections is provided with each Model 252.
5. Pneumatic Assembly
The pneumatic assembly is the primary control and distribution center for the pressurized
air used by the Model 252. All electrical control of the pneumatic assembly is done
through connections to the electronics assembly.