●
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)
●
"SIL seating" configuration
= “No seating”
Also valid for combination of SafeESD with Safe STOP.
Table 23: Proof test checklist
✎
Configuration
Safe OPENING (Safe ESD in direction OPEN)
✎
Configuration
Safe CLOSING (Safe ESD in direction CLOSE)
✓
1. Is actuator in mid-position or at sufficient distance
from the end positions?
✓
1. Is actuator in mid-position or at sufficient distance
from the end positions?
✓
2. Switch compartment opened?
✓
2. Switch compartment opened?
✓
3. Safe ESDa and Safe ESDb input signals
set to 0 V (low)?
✓
3. Safe ESDa and Safe ESDb input signals
set to 0 V (low)?
Yes
No
➥ Check actuator reaction:
Safety operation initiated?
Yes
No
➥ Check actuator reaction:
Safety operation initiated?
✓
4. Limit switch OPEN operated?
(Test button [2] turned in direction of the LSO arrow?)
✓
4. Limit switch CLOSE operated?
(Test button [1] turned in direction of the LSC arrow?)
Yes
No
➥ Check actuator reaction:
Safety operation not stopped?
Yes
No
➥ Check actuator reaction:
Safety operation not stopped?
✓
5.1 Safe ESDa and Safe ESDb input signals
set to +24 V DC (high) before reaching the end posi-
tion?
✓
5.1 Safe ESDa and Safe ESDb input signals
set to +24 V DC (high) before reaching the end posi-
tion?
✓
5.2 Actuator operated via local controls or from RE-
MOTE to end position OPEN and then to end position
CLOSED?
✓
5.2 Actuator operated via local controls or from RE-
MOTE to end position OPEN and then to end position
CLOSED?
✓
5.3 Actuator operated to mid-position or at sufficient
distance from the end positions?
✓
5.3 Actuator operated to mid-position or at sufficient
distance from the end positions?
✓
6. Safe ESDa and Safe ESDb input signals
set to 0 V (low)?
✓
6. Safe ESDa and Safe ESDb input signals
set to 0 V (low)?
✓
7.Torque switch OPEN operated?
(Test button [2] turned in direction of the TSO arrow?)
✓
7.Torque switch CLOSE operated?
(Test button [1] turned in direction of the TSC arrow?)
Yes
No
➥ Check actuator reaction:
Safety operation not stopped?
Display illuminated in red?
Yes
No
➥ Check actuator reaction:
Safety operation not stopped?
Display illuminated in red?
Yes
No
➥ Check SIL module signal behaviour:
SIL fault signal?
SIL failure output (NC contact) = closed)
Yes
No
➥ Check SIL module signal behaviour:
SIL fault signal?
SIL failure output (NC contact) = closed)
✓
8. Safe ESDa and Safe ESDb input signals
set to +24 V DC (high) before reaching the end posi-
tion?
✓
8. Safe ESDa and Safe ESDb input signals
set to +24 V DC (high) before reaching the end posi-
tion?
✓
9.Torque fault of standard controls acknowledged?
✓
9.Torque fault of standard controls acknowledged?
✓
10. Switch compartment closed?
✓
10. Switch compartment closed?
☒ ✓ = Executed
☒ Yes = Condition met
☒ No = Condition not met
If the answer to one of the questions is no, the safety instrumented system must be checked.
11.2.9. Safe STOP function
Proof test checklist for version or configuration:
“SIL function” = ”Safe STOP CLOSE/OPEN” (safe stop) configuration.
Also valid for combination of SafeESD with Safe STOP.
45
Multi-turn actuators
SA 07.2 – SA 16.2/SAR 07.2 – SAR 16.2 Checklists
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