AUMA SQ 05.2-SQ 14.2 Manual page 28

Tests and maintenance
Information
Test procedure
28
Figure 12: Electromechanical control unit
Turn test button [1] in direction of the LSC arrow: Limit switch CLOSED trips.
Turn test button [1] in direction of the TSC arrow: Torque switch CLOSED trips.
Turn test button [2] in direction of the LSO arrow: Limit switch OPEN trips.
Turn test button [2] in direction of the TSO arrow: Torque switch OPEN trips.
If one of the test buttons (TSC/TSO) is turned without performing a safety operation,
a SIL fault signal is issued!
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:
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 standard controls.
10. Close switch compartment.
SQ 05.2 SQ 14.2/SQR 05.2
and Safe ESDb input signals to 0 V (low).
and input signals to +24 V DC (high).
Safe ESDb
and input signals to 0 V (low).
Safe ESDb
SIL failure
Safe ESDb input signals to +24 V DC (high) after the
Part-turn actuators
SQR 14.2
output.