TMA IS Safety Matrix ExplainedΒΆ

This repo contains the safety matrix for the TMA IS, named as TMA IS TABLE.csv.

Actuation description:

ACRONYMS

DEFINITION

DESCRIPTION

N

Not Store

If the cause is active, the effect is tripped

S

Store

If the cause is active, the effect is tripped and stored. If the effect is no longer tripped, the operator must manually clear it

V

Overridable

The cause is active, the effect is tripped. It can bypass the tripping of the effect

R

Resettable and Overridable

Combination of the S and V

The numbers with some of the letters are:

NUMBERS

DESCRIPTION

(1)

Override with cabinet switch for main axis

(2)

Fault conditioned with low pressure and brake active with delayed activation time

(3)

Override with switch in elevation ring

(4)

If AZ brake actuated only not stored operation (N or V)

(5)

If EL and AZ brake actuated only not stored operation (N or V)

List of abbreviation:

ACRONYMS

DEFINITION

CW

Clockwise

CCW

Counterclockwise

ETPB

Emergency Trip Push Button

GIS

Global Interlock System

OSS

Oil Supply System

STO

Safe Torque Off

Unexplained fields of the table:

  • TMA-D-#: stands for the list of detection (cause) just numbering them starting at 1

  • TMA-A-# stands for the list of actuation (effects) just numbering them starting at 1