Check Safe Esd Reaction To "Forced Limit Seating In End Position" (Limit Evaluation) - For Actuators With Electromechanical Control Unit; Safe Esd Reaction To "Forced Limit Seating In End Position" (Limit Evaluation) - For Actuators With Electronic Control Unit And Limit Switches: Check - AUMA SA3 Manual

Multi-turn actuators
SA series with Control 3.XX /NI/SIL
8.4.5 Check Safe ESD reaction to "Forced limit seating in end position" (limit evaluation) – for actuators with
electromechanical control unit
Configuration
Test procedure
Test sequence
8.4.6 Safe ESD reaction to "Forced limit seating in end position" (limit evaluation) – for actuators with
electronic control unit and limit switches: check
Configuration
Test procedure
This test is required for the following versions or configurations:
• Actuator with electromechanical control unit(MWG.2)
• One of the following safety functions:
− Safe ESD function "Safe CLOSING" (Safe ESD in direction CLOSE)
− Safe ESD function "Safe OPENING" (Safe ESD in direction OPEN)
• Configuration of "SIL seating"
= "Forced limit seating in end position"
(safety operation is stopped by limit switch tripping)
During the test, the reaction of the Safe ESD function to limit switch tripping during safety
operation is checked.
During Safe ESD operation, the actuator has to stop when reaching the position set via limit
switching.
1. Operate actuator in mid-position or at sufficient distance from the end positions.
2. Open the switch compartment
3. Initiate safety operation:
® Set
Safe ESDa
Check seating via limit switches:
Operate limit switches until test is complete:
® For "Safe CLOSING" (Safe ESD in direction CLOSE) configuration: Activate
SIL ESDa / ESDb command until close limit switch trips, then validate the
valve position on EPAC display as 0.00%
® For "Safe OPENING" (Safe ESD in direction OPEN) configuration: Activate
SIL ESDa/ ESDb command until Open limit switch trips, then validate the
valve position on EPAC display as 100%.
The safety function reaction to the limit switch signals is correct if safety operation is
stopped.
4.
Set Safe ESDa and Safe ESDb input signals to +24 V DC (high) after the test.
5.
Close switch compartment.
This test is required for the following versions or configurations:
• Actuator with control unit and limit switches
• One of the following safety functions:
− Safe ESD function "Safe CLOSING" (Safe ESD in direction CLOSE)
− Safe ESD function "Safe OPENING" (Safe ESD in direction OPEN)
• Configuration of "SIL seating"
= "Forced limit seating in end position"
(Safety operation is stopped by limit switch tripping)
During the test, the reaction of the Safe ESD function to limit switch tripping during safety
operation is checked.
and input signals to 0 V (low).
Safe ESDb
30