Emerson EL-O-Matic F Series Safety Manual page 14

Section 8: Periodic Test and Maintenance Requirements
September 2018
Table 2.
Angular position of
the shaft
Time necessary
to reach the final
position
Output torque
(Pressure in the
cylinder)
Table 3.
Housing
End cap
Piston
Rack
Pinion
Spring
Stroke adjustment
11
Instruments/equipment to be used for the test
Quantity
Automatic Procedure
Case A
Use of a Logic Solver:
1. Limit switches box, or 4÷20 mA
position transmitter
2. Digital Input Module / Analog Input
Module included in the Logic Solver
3. Application Software function
(to compare the actual trend with the
one stored during SAT)
Case B
Use of a Partial stroke testing device:
1. Limit switches box, or 4÷20 mA
position transmitter
2. Partial stroke testing device with
integrated Software function
As above
Case A
Use of a Logic Solver:
1. Pressure transmitter connected to
the cylinder chamber
2. Analog Input Module included in
the Logic Solver
3. Application Software function
(to compare the actual trend with the
one stored during SAT)
Case B
Use of a Partial stroke testing device:
1. Pressure transmitter connected to
the cylinder chamber
2. Partial stroke testing device with inte-
grate Software function
Failure mode detectable by the test
Component
Instruments/equipment
Detectable failure modes
Automatic Procedure
Breakage
Breakage
Breakage
Sticking
Breakage
Binding
Breakage
Binding
Breakage
Weakened
Breakage
Bended
Periodic Test and Maintenance Requirements
SIL Safety Manual
DOC.SILM.EF.EN Rev. 1
Manual Procedure
1. Limit switches box, and/or
visual indication
2. Skilled and trained
personnel
1. Limit switches box, and/or
visual indication
2. Chronometer
3. Skilled and trained
personnel
Skilled and trained
personnel (to check audible
partial sticking)
Manual Procedure
As per automatic procedure