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Cable End Electrical Assemblies and Precision Measurement Processor Miscellaneous interlocks, switches and accessories
p/n 6510020208
10/18/07
6-31
6.6. Miscellaneous interlocks, switches and
accessories
6.6.1. Interlocks
•
Head split
•
Ash (X-ray source)
6.6.1.1. Head-split
interlock
The purpose of relay K6 on the Termination Board is to stop the scanner
and close the shutters if the heads become separated or the basis weight
receiver is removed. The interlock disables the scanner motor by opening
the crash switch signal. The interlock closes the basis weight shutter by
opening the red lamp circuit, and closes the ash shutter by opening the
lamp sense signal. The Head Split key switch, which activates the
pneumatic clutch to allow the heads to be manually separated, also opens
relay K6.
6.6.1.2. Ash
interlock
The ash source operates differently from the basis weight source in
distinct ways. For instance, the ash shutter is normally open and the X-ray
beam can be stopped by removing power. As a result, the safety interlock
is more involved. For more information on the Radiation Fault Board, see
Subsection 6.6.4.1.
6.6.2. Termination board switches
Termination PCBs have two pushbutton switches and one toggle switch.
These switches allow the heads to be scanned and jogged manually.
Summary of Contents for 4022
Page 1: ...Precision Platform 4022 Scanner System Manual 6510020208 ...
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Page 3: ...Precision Platform 4022 Scanner October 2007 ...
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Page 239: ...Glossary p n 6510020208 10 18 07 11 5 VIO Virtual Input Output ...