●
“Safe end position feedback” safety function
●
Applies also for combination with of Safe ESD in direction OPEN/CLOSE.
Only the actually used (assigned) contacts must be checked. In particular for
variant 1 (➭ page 6, Valid device types), use of the NC contacts is not permit-
ted; checking is therefore not required.
Table 12: Proof test checklist
✎Configuration
Fail safe position OPEN and CLOSED (safety position OPEN and CLOSED)
⎕ ✓1. Actuator in mid-position or at sufficient distance from the end positions?
⎕ Yes
⎕ No
➥ check FQM end position switch:
●
End position OPEN not reached signal (output signal inactive), i.e.:
LSO 38-20=NC output (NC contact) = closed
LSO 19-21=NO (NO contact) output = open
●
End position CLOSED not reached signal (output signal inactive), i.e.:
LSC 35-23=NC output (NC contact) = closed
LSC 22-24=NO (NO contact) output = open
➥ No fail safe fault signal may be present (“FS ready” signal).
⎕ ✓2. Operation command in direction CLOSE executed?
⎕ ✓➥ Check actuator reaction:
Operation was triggered?
⎕ Yes
⎕ No
3. Wait until FQM end position switch tripping.
➥ Check actuator reaction:
Operation stopped when reaching end position switch CLOSED?
●
End position OPEN not reached signal (output signal inactive), i.e.:
LSO 38-20=NC output (NC contact) = closed
LSO 19-21=NO (NO contact) output = open
●
End position CLOSED reached signal (output signal active), i.e.:
LSC 35-23=NC output (NC contact) = open
LSC 22-24=NO (NO contact) output = closed
➥ No fail safe fault signal may be present (“FS ready” signal).
⎕ ✓4. Operation command in direction OPEN executed?
⎕ ✓➥ Check actuator reaction:
Operation was triggered?
Start of operating time measurement.
⎕ Yes
⎕ No
5. Wait until FQM end position switch tripping.
➥ Check actuator reaction:
Operation stopped when reaching end position switch OPEN?
Operating time measurement complete.
●
End position OPEN reached signal (output signal active), i.e.:
LSO 38-20=NC output (NC contact) = open
LSO 19-21=NO (NO contact) output = closed
●
End position CLOSED not reached signal (output signal inactive), i.e.:
LSC 35-23=NC output (NC contact) = closed
LSC 22-24=NO (NO contact) output = open
➥ No fail safe fault signal may be present (“FS ready” signal).
⎕ Yes
⎕ No
Operating time for operation from end position CLOSED in direction OPEN corresponds to the actuator configuration.
⎕ ✓6. Operate FQM via actuator into intermediate position.
Actuator in mid-position or at sufficient distance from the end positions?
35
with non safety-related actuators Checklists