INFICON MPI-16 Crucible Indexer - Manual (Page 12)

MPI-16 & MPI-16H POCKET INDEXERS
1-2 General Description
required, to turn the crucible. The maximum torque generated by each version is listed
below.
1.2.3.1 MPI-16 Standard Torque
The Standard indexer, Model MPI-16, is capable of providing up to 187 in-oz. of torque
at output shaft. The output shaft size is ¼ inch in diameter.
1.2.3.2 MPI-16H High Torque
The High Torque Indexer, Model MPI-16H, is capable of providing up to 310 in-oz. of
torque at output shaft. The output shaft size is 5/16 inch in diameter.
1.2.4 Safety
An Abort/Reset button is provided to allow emergency pausing without program
interruption. If this button is held for two seconds, the system resets itself. When
connected to a Deposition Controller, an external Abort signal will also cause a pause in
the program that can be resumed when the Abort signal is removed. The MPI-16
provides an Interlock relay that acts to ensure that the e-beam is never active during
pocket rotation. The MPI-16 will halt operation if it’s maximum torque is exceeded or if
the motor overheats.
1.2.5 Deposition Controller Interface
The MPI-16 supports two modes for interfacing with an external Deposition Controller,
such at the INFICON MDC-360. The simplest method is for the MPI-16 to accept BCD
(Binary Coded Decimal) inputs to select the desired pocket number and provide BCD
outputs to transmit the current pocket number back to the Controller. An alternate
method accepts two separate inputs (Clockwise and Counter-Clockwise), which rotate the
MPI-16 by one pocket in the indicated direction whenever either signal is asserted.
1.2.6 Remote Panel
The Remote Panel is a rack-mount control unit that provides pocket selection, speed
selection, an easy-to-read LED display of the current pocket position and an Abort/Reset
button. The Remote Panel is required if you do not plan to use the MPI-16 with an
external controller, since it will be the only way to select pockets. Even when using
external control, the Remote Panel may be useful since it allows easy manual pocket
selection. For example, the remote panel allows the operator to check the material levels
in the individual pockets in between deposition runs.
1.2.7 Error and Fault Detection
In the event of any type of error or fault, the MPI-16 makes it very clear what problem
has occurred. If the unit has not been configured correctly, a blinking LED will flash a
code that indicates what configuration changes need to be made. Similarly, if there is a
run-time fault, a different blinking LED will flash a code that indicates what error
occurred. Table 3-1 and Table 4-5 System Faults in this manual defines the meaning of
the blink-codes, and a Quick Reference is provided in Appendix A.