Safe Esd Safety Operation (Safe Opening/Closing) - AUMA SQ 05.2-SQ 14.2 Manual

Part-turn actuators
SQ 05.2 SQ 14.2/SQR 05.2
Information
8.4.1.

Safe ESD safety operation (Safe OPENING/CLOSING)

Configuration
Test procedure
Test procedure
SQR 14.2
7. Check Safe ESD reaction to "Forced torque seating in end position" (first torque
then limit evaluation).
8. Check Safe ESD reaction for "No seating" (no evaluation of limit and torque)
9. Check Safe STOP function.
10. Check combination of Safe ESD and Safe STOP function.
The safety-related signal input is appropriately assigned to check the safety-related
function. As a consequence, the actuator has to perform the safety function. For a
detailed description of the proof test steps refer to the following sections.
Intervals:
A proof test interval describes the time between two proof tests. Functionality must
be checked in appropriate intervals. The intervals are to be defined by the plant
operator. Safety figures depend on the selected proof test interval; in our example,
they are valid for T = 1 year (refer to <Safety figures> chapter).
proof
In any case, the safety-related functions must be checked after commissioning and
following any maintenance work or repair as well as during the T
in safety assessment.
If a fault occurs during proof test, safe function has to be ensured introducing
alternative actions. Please contact AUMA Riester GmbH & Co. KG.
The type of proof test to be performed depends on version and configuration of the
product. Only the tests applicable have to be performed.
Before starting the test we recommend reading the respective test procedure at least
once.
The test is valid for all versions with Safe ESD function (irrespective of the "SIL
seating" configuration). The Safe ESD reaction to the different seating types is verified
in separate tests.
When switching the
Safe ESDa/Safe ESDb
into the configured direction must be triggered.
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 jamming, de-
fective thyristors, heating up or damage to cables.
Check "SIL seating" before proof test configuration. The configured type of
seating is indicated in the wiring diagram (page 2).
For actuators with "SIL seating" = "No seating": Interrupt safety operation
before reaching the end position (Set
nals 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.
1. Operate actuator in mid-position or at sufficient distance from the end positions.
Tests and maintenance
intervals defined
proof
inputs accordingly, safety operation
Safe ESDa/Safe ESDb
input sig-
25