Allen-Bradley AADvance T9110, Руководство по безопасности

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130 Rockwell Automation Publication ICSTT-RM446N-EN-P - April 2018
Glossary
termination assembly A printed circuit board which connects field wiring to an input or output
module. The circuit includes fuses for field circuits. The board carries screw
terminals to connect field wiring to the controller, and the whole assembly clips
onto the 9300 I/O base unit.
TMR Triple modular redundant. A fault tolerant arrangement in which three
systems carry out a process and their result is processed by a voting system to
produce a single output.
U
U Rack unit. A unit of measure used to describe the height of equipment
intended for mounting in a standard rack. Equivalent to 44.45mm (1-¾
inches).
V
validation In quality assurance, confirmation that the product does what the user requires.
verification In quality assurance, confirmation that the product conforms to the
specifications.
voting system A redundant system (m out of n) which requires at least m of the n channels to
be in agreement before the system can take action.
W
withstand voltage The maximum voltage level that can be applied between circuits or
components without causing a breakdown.