Check Safe Esd Reaction To "Forced Limit Seating In End Position" (Limit Evaluation) - AUMA AC 01.2-22X Manual

Multi-turn actuators
SA .1 with AC 01.2-22X/-22Y/ACExC 01.2-22X/-22Y
8.4.6. Check Safe ESD reaction to Forced limit seating in end position" (limit evaluation) – for actuators
with electromechanical control unit
Configuration
Test procedure
3. Initiate safety operation:
Set Safe ESDa
Check seating via limit switches:
4. Operate limit switches until test is complete:
For "Safe CLOSING" (Safe ESD in direction CLOSE) configuration:
Turn test button [1] in direction of the LSC arrow.
For "Safe OPENING" (Safe ESD in direction OPEN) configuration: Turn
test button [2] in direction of the LSO arrow.
The safety function reaction to the limit switch signals is correct if safety opera-
tion is stopped.
5. After limit switching evaluation:
5.1 Set Safe ESDa
5.2 Operate actuator via local controls or from REMOTE to end position OPEN
and then to end position CLOSED. (Positions will be recorded anew).
5.3 Operate actuator to mid-position or at sufficient distance from the end
positions.
Check seating via torque switches:
6. Initiate safety operation:
Set
Safe ESDa
7. Operate torque switches until test is complete:
For "Safe CLOSING" (Safe ESD in direction CLOSE) configuration:
Turn test button [1] in direction of the TSC arrow.
For "Safe OPENING" (Safe ESD in direction OPEN) configuration: Turn
test button [2] in direction of the TSO arrow.
The safety function reaction to the torque switch signals is correct if:
- Safety operation is stopped.
-
A SIL fault signal is issued via the
- Display is illuminated in red.
8. Set Safe ESDa and
test.
9. Acknowledge torque fault of the standard actuator controls.
10. Close switch compartment.
This test is required for the following versions or configurations:
Actuator with electromechanical control unit
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.
The red test buttons [1] and [2] of the control unit are used for the test. These can
be used to operate the switches manually.
and Safe ESDb input signal to 0 V (low).
and Safe ESDb input signals to +24 V (high).
and input signal to 0 V (low).
Safe ESDb
SIL failure
Safe ESDb input signals to +24 V DC (high) after the
Tests and maintenance
output.
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