AUMA AC 01.2-22X Manual page 34

Tests and maintenance
Test sequence
8.4.7. Check Safe ESD reaction to Forced limit seating in end position" (limit evaluation) – for actuators
with electronic control unit and limit switches
Configuration
Test procedure
Test sequence
34
Figure 15: Electromechanical control unit
Turn test button [1] in direction of the LSC arrow: Limit switch CLOSED trips.
Turn test button [2] in direction of the LSO arrow: Limit switch OPEN trips.
1. Operate actuator in mid-position or at sufficient distance from end positions.
2. Open the switch compartment
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. Set and
Safe ESDa
test.
6. Close switch compartment.
This test is required for the following versions or configurations:
Actuator with electronic 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.
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 end positions.
2. Initiate safety operation:
Set Safe ESDa
Check seating via limit switches:
3. Wait until actuator has reached the limit end position and has activated the
pertaining limit switch.
The safety function reaction to the limit switch signals is correct if safety opera-
tion is stopped.
4. Set Safe ESDa and
test.
SA .1 with AC 01.2-22X/-22Y/ACExC 01.2-22X/-22Y
and input signal to 0 V (low).
Safe ESDb
input signals to +24 V DC (high) after the
Safe ESDb
and Safe ESDb input signal to 0 V (low).
Safe ESDb input signals to +24 V DC (high) after the
Multi-turn actuators