Leuze electronic SD4T 14 - Checklist for Point of Operation Guarding

Appendix
70 SOLID-4 Leuze electronic
DEUTSCH ENGLISH FRANÇAIS ITALIANO ESPAÑOL NEDERLANDS
12.4.1 Checklist for point of operation guarding
For a SOLID-4 Safety Light Curtain (resolution 14 mm to 40 mm), with normal approach to
the protective field.
This checklist is intended as a help tool. It supports but does not replace the inspection
before first startup or the respective regular inspections by an expert.
• Is the safety distance calculated in accordance with the valid formulas for
poin
t of operation guarding, while taking the effective resolution and the
response time of the AOPD, the response time of a possibly used safety
interface and the stopping time of the machine into consideration, and has
this minimum distance between the protective field and the point of
operation been observed?
Yes No
• Is access to the point of operation only possible through the protective field
of
t
he AOPD and are other possible accesses protected by suitable safety
components?
Yes No
• Is the protective field effective at each side and positively tested according
to
Chapt
er 9.3?
Yes No
• Is reaching-over, reaching-under or r
eaching-around the protective field
effectively prevented, e.g. by mechanical measures (welded or screwed)?
Yes No
• Is unprotected presence between the protecti
ve field and point of operation
safely excluded, e.g. with fixed physical measures or with the control of
monitored physical components?
Yes No
• Are transmitter and receiver fixed against displacement/turning after the
al
ignm
ent?
Yes No
• Are the protective device and the control devices in good, fault-free
conditi
on?
Yes No
• Are all connectors and connecting cables in fault-free conditions? Yes No
• Is the start/restart button for resetting the AOPD positioned outside the
danger zone i
n line with specifications and is it effective?
Yes No
• Are the safety switching outputs (OSSDs), linked into the downstream
machine control
unit in accordance with the required safety category?
Yes No
• Are the downstream circuit elements controlled by the AOPD monitored by
the
feedback circuit (EDM), e.g. contactors with positive-guided contacts or
safety valves?
Yes No
• Does the actual integration of the AOPD into the machine control unit match
t
he circuit
diagrams?
Yes No
• Is the AOPD effective during the entire dangerous movement of the
machine?
Yes No
• Is the dangerous movement stopped immediately if the supply voltage of the
AO
PD is interrupted and is the start/restart button required to start the
machine again after the supply voltage returns?
Yes No