SED 024.16.720 - 15 Safety Positions; Safety Positions after Failure of the Electrical or Pneumatic Auxiliary Power

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Safety Positions
Type 024.16.720
15. SAFETY POSITIONS
15.1. Safety positions after failure of the electrical or pneumatic
auxiliarypower
Actuator system Designation
Safety positions after failure of the auxiliary power
electrical pneumatic
up
down
single-acting
Control
function A
down
pilot-controlled
control system:
down
direct-acting control
system:
notdened
up
down
single-acting
Control
function B
up
pilot-controlled
control system:
up
direct-acting control
system:
notdened
Table 31: Safety Positions