Installation Manual

Theory of Operation 7-5
Description of System Components
Conveyor Controller
The heart of the Conveyor Controller is a microcontroller. The Controller receives commands from
software through the Controller Area Network (CAN) bus for direct Conveyor I/O control and changes of
system configuration. The CAN also provides the status of the Conveyor Controller operations to the
FmNT software. Although the software can have direct control over Conveyor operations, the majority of
the time the Conveyor Controller acts independently to manage all local processes and I/O. These
processes include:
• Operation of Stop Pins, Clamps, Tooling Vacuum and Lift Tables
• Monitoring of Temperature for Both Thermocouple and RTD Type Part Heaters
• Control of Conveyor Belt Movement and Rail Width
• Operation of Station Timers
• SMEMA Communication with Upstream and Downstream Machines
Servo Shelf
The Servo-self, located in upper rear of the dispensing system, houses the following components:
• XY Servo Interface PWA
• X and Y Servo Amplifiers
• Servo Power Transformer
• Low Air Pressure Sensor
• DC Cooling Fan
• Main Air Solenoid
• Dual Action Solenoid
The Servo Shelf is accessible via a service hatch attached with quick-release fasteners. Cables enter the
Servo Shelf area from the lower electronics via a cable conduit on the back of the dispensing system. The
Y – axis Cat Track attaches to the front edge of the Servo Shelf where all cables and pneumatics run to
the Dispensing Head.
XY Servo Interface PWA
XY Servo Interface PWA routes all signals going to the Dispensing Head except for the Camera coaxial
cable and the CAN communication. This board includes analog circuitry that conditions and amplifies the
control signals between the PMAC and the amplifiers. Servo supply capacitors and power dissipation
circuitry is also located on the board. To assist in troubleshooting, the XY Servo Interface PWA contains
power indicator LEDs and XYZ Servo Motor status LEDs.