Check Safe End Position Signal" Safety Function - AUMA AC 01.2-22X Manual

Tests and maintenance
Test procedure
Test sequence
Information
8.4.12.

Check Safe end position signal" safety function

Configuration
Test procedure
Test sequence
38
One of the following Safe ESD safety functions with any seating configuration:
- Safe ESD function: "Safe CLOSING" (Safe ESD in direction CLOSE)
- Safe ESD function: "Safe OPENING" (Safe ESD in direction OPEN)
Safe STOP function
If SIL seating" = no seating" (without end position protection) is configured
faulty operation during the test may result in damage to the elements within
the safety-related system.
Possible consequences: Valve damage, motor overheating, contactor seizure,
damage to the electronics, heating up or damage to cables.
Check "SIL seating" before proof test configuration.
For actuators with "SIL seating" = "no seating": Interrupt safety operation be-
fore reaching the end position (Set
signals to +24 V DC).
For the test, the valve should either be in mid-position or at sufficient distance
from the end positions.
In case of damage, the actuator system has to be checked and repaired, if ne-
cessary.
This test is intended to confirm the correct function of the combination of Safe ESD
safety operation and the Safe STOP function.
1. Operate actuator in mid-position or at sufficient distance from end positions.
2. Execute Safe STOP command in direction of the configured Safe ESD safety
function:
For "Safe CLOSING" (Safe ESD in direction CLOSE) configuration:
Set Safe STOP CLOSE
For "Safe OPENING" (Safe ESD in direction OPEN) configuration: Set
Safe STOP OPEN
3. Initiate safety operation:
Set Safe ESDa and
Safety function is correct if the actuator performs a safety operation into the
configured direction.
No SIL fault signal may be issued.
4. Set ,
Safe ESDa Safe ESDb
CLOSE input signals to +24 V DC (high) once the test is complete.
In addition to this test, all other proof tests relating to the individual safety functions
(Safe STOP or ESD) in this manual have to be performed for the combination of
Safe ESD and Safe STOP.
This test is required for versions with safe end position feedback ("22Y" variant)
When reaching the end position, the end position switches must correctly signal the
end position at the XK customer interface. When leaving the end position again, the
signal must be cancelled accordingly.
1. Operate actuator to end position OPEN
Safe end position signal?
2. Unseat actuator out of end position OPEN
cancelled?
3. Operate actuator again to end position OPEN Is end position OPEN signalled
again via Safe end position signal?
4. Operate actuator to end position CLOSED Is end position CLOSED signalled
via Safe end position signal?
SA .1 with AC 01.2-22X/-22Y/ACExC 01.2-22X/-22Y
Safe ESDa
input signal to 0 V (low).
input signal to 0 V (low).
Safe ESDb input signals to 0 V (low).
,
Safe STOP OPEN
Is end position OPEN signalled via
Is safe end position signal OPEN
Multi-turn actuators
and input
Safe ESDb
and
Safe STOP